2013-09-19 09:26:47

by Jody Gugelhupf

[permalink] [raw]
Subject: help with nfs export/mount

i'm currently using samba for fileshares with my media center (xbmc/openelec on a pi). I have a server on the network with 20 different harddisks on this system that contain all my media. I have directory "/home/user/media" on my server into which i "mount --bind" all the media i want to be accessible on xbmc (on the pi) or on other computers on the local network. To give you an idea of the mounts on my server:

/home/user/media#located on /dev/sda
/home/user/media/Movies#located on /dev/sdf used 'mount --bind /dev/sdf/Movies /home/user/media/Movies'
/home/user/media/Series#located on /dev/sda has +300 sub directories, that i created within '/home/user/media/Series' and 'mount --bind' from all other locations/hdd's into the respective folder within '/home/user/media/Series'?e.g.
/home/user/media/Series/24#located on /dev/sdb used 'mount --bind /dev/sdb/24 /home/user/media/Series/24'?
/home/user/media/Series/Star.Trek#located on /dev/sdc used 'mount --bind' and so forth but also:
/home/user/media/Series/Animation#located on /dev/sda has +30 sub directories, e.g.
/home/user/media/Series/Animation/Ben10#located on /dev/sdz used 'mount --bind /dev/sdz/Ben10 /home/user/media/Series/Animation/Ben10'

a more elaborate list here:?http://pastebin.com/DhUA5tks

this all works fine, but I was told NFS would be faster so i wanted to give it a try. the server runs ubuntu 12.04.2, kernel 3.2.0-48-generic x86_64, up to date NFSv4. After installing NFS I tried simple exports (one folder without any sub directories that have no 'mount --bind' in them) and accessing them works fine. So now I thought to export the '/home/user/media' directory?but using the samba setup as described from above does not work. Ideally, I would like to have to nfs mount only?'/home/user/media' and have all the 'mount --bind' folders accessible on the server also accessible on all clients.
Rather then using the xbmc/pi mentioned above I use my laptop with ubuntu to test the export mounts as a client. In samba it was enough to share the parent folder, in this case '/home/user/media' and everything below that share would be visible but as i understand this is not the case in nfs, I need to specify each sub directory that is 'mount --bind' (from a different file system) in the export.

my export file:
/home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)

I also have tried 'crossmnt' instead of 'nohide' as I'm using a subnet and that appears to be problematic at times.?
/home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)

Same result.

I also have tried 'nohide' and then specified only the client IP instead of subnet info.
/home/user/media/ ? ? ??192.168.2.101(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Movies ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/show_33 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/show_34 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations/show_1 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
/home/user/media/Series/Animations/show_2 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)

Also does not work.

In all the above scenarios I manage to mount on client side:
sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc

but when i try to mount in any of the above described scenarios i get timeout e.g.:

sudo mount -t nfs 192.168.2.3:/home/user/media/Movies /home/jarvis/Videos/xbmc/Movies

What I would want is to only mount the parent export on the client side, e.g.:
sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
and have all directories/files that are available on the server side under '/home/user/media/' to be available on client side under '/home/jarvis/Videos/xbmc' as I have with samba at the moment

how to achieve this?


2013-09-19 13:31:43

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

Thanks also for your response, I have tried you suggestion of:?
? ? /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_check,no_subtree_check)

but got an error that 'no_root_check' was unknown, so i suppose just a type and meant was:
? ? /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check)


but still it does not work, not only on ubuntu but also not on xbmc (openelec/rpi)

----- Original Message -----
From: J. Bruce Fields <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 3:14:29 PM
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 02:26:46AM -0700, Jody Gugelhupf wrote:
> i'm currently using samba for fileshares with my media center (xbmc/openelec on a pi). I have a server on the network with 20 different harddisks on this system that contain all my media. I have directory "/home/user/media" on my server into which i "mount --bind" all the media i want to be accessible on xbmc (on the pi) or on other computers on the local network. To give you an idea of the mounts on my server:
>
> /home/user/media#located on /dev/sda
> /home/user/media/Movies#located on /dev/sdf used 'mount --bind /dev/sdf/Movies /home/user/media/Movies'
> /home/user/media/Series#located on /dev/sda has +300 sub directories, that i created within '/home/user/media/Series' and 'mount --bind' from all other locations/hdd's into the respective folder within '/home/user/media/Series'?e.g.
> /home/user/media/Series/24#located on /dev/sdb used 'mount --bind /dev/sdb/24 /home/user/media/Series/24'?
> /home/user/media/Series/Star.Trek#located on /dev/sdc used 'mount --bind' and so forth but also:
> /home/user/media/Series/Animation#located on /dev/sda has +30 sub directories, e.g.
> /home/user/media/Series/Animation/Ben10#located on /dev/sdz used 'mount --bind /dev/sdz/Ben10 /home/user/media/Series/Animation/Ben10'
>
> a more elaborate list here:?http://pastebin.com/DhUA5tks
>
> this all works fine, but I was told NFS would be faster so i wanted to give it a try. the server runs ubuntu 12.04.2, kernel 3.2.0-48-generic x86_64, up to date NFSv4. After installing NFS I tried simple exports (one folder without any sub directories that have no 'mount --bind' in them) and accessing them works fine. So now I thought to export the '/home/user/media' directory?but using the samba setup as described from above does not work. Ideally, I would like to have to nfs mount only?'/home/user/media' and have all the 'mount --bind' folders accessible on the server also accessible on all clients.
> Rather then using the xbmc/pi mentioned above I use my laptop with ubuntu to test the export mounts as a client. In samba it was enough to share the parent folder, in this case '/home/user/media' and everything below that share would be visible but as i understand this is not the case in nfs, I need to specify each sub directory that is 'mount --bind' (from a different file system) in the export.

No, it should actually be sufficient just to export the parent.? Also,
we don't recommend fsid=0 any longer.? Also, "async" should be avoided.
So just:

??? /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_check,no_subtree_check)

and you mount that with "mount myserver:/home/user/media /mymountpoint".

(Note the "crossmnt", which tells the server to export all the children
automatically.)

If that doesn't work you've probably found a bug.? I'd recommend
reporting that to Ubuntu, and/or here if you can reproduce with recent
kernel and nfs-utils.

--b.

>
> my export file:
> /home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> I also have tried 'crossmnt' instead of 'nohide' as I'm using a subnet and that appears to be problematic at times.?
> /home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
>
> Same result.
>
> I also have tried 'nohide' and then specified only the client IP instead of subnet info.
> /home/user/media/ ? ? ??192.168.2.101(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> Also does not work.
>
> In all the above scenarios I manage to mount on client side:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
>
> but when i try to mount in any of the above described scenarios i get timeout e.g.:
>
> sudo mount -t nfs 192.168.2.3:/home/user/media/Movies /home/jarvis/Videos/xbmc/Movies
>
> What I would want is to only mount the parent export on the client side, e.g.:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
> and have all directories/files that are available on the server side under '/home/user/media/' to be available on client side under '/home/jarvis/Videos/xbmc' as I have with samba at the moment
>
> how to achieve this?
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at? http://vger.kernel.org/majordomo-info.html


2013-09-19 14:10:17

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

on server side I see in dmesg this:
[8040437.603605] nfsd: last server has exited, flushing export cache
[8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[8040439.496035] NFSD: starting 90-second grace period

on client side i only see:
Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
?is there a way to further debug?

----- Original Message -----

From: J. Bruce Fields <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 3:40:28 PM
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 06:31:41AM -0700, Jody Gugelhupf wrote:
> Thanks also for your response, I have tried you suggestion of:?
> ? ? /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_check,no_subtree_check)
>
> but got an error that 'no_root_check' was unknown, so i suppose just a type and meant was:
> ? ? /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check)
>
>
> but still it does not work, not only on ubuntu but also not on xbmc (openelec/rpi)

Could you explain exactly how it fails?

--b.

2013-09-21 14:36:26

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

but now my syslog and dmesg on nfs serverside is full of these msg'es:

Sep 21 16:34:13 fatzo kernel: [8295937.032636] RPC: ? ? ? Want update, refage=120, age=116
Sep 21 16:34:21 fatzo kernel: [8295945.056091] RPC: ? ? ? Want update, refage=120, age=0
Sep 21 16:34:26 fatzo kernel: [8295950.056027] RPC: ? ? ? Want update, refage=120, age=5
Sep 21 16:34:31 fatzo kernel: [8295955.056024] RPC: ? ? ? Want update, refage=120, age=10
Sep 21 16:34:36 fatzo kernel: [8295960.056024] RPC: ? ? ? Want update, refage=120, age=15
Sep 21 16:34:41 fatzo kernel: [8295965.056095] RPC: ? ? ? Want update, refage=120, age=20
Sep 21 16:34:46 fatzo kernel: [8295970.056030] RPC: ? ? ? Want update, refage=120, age=25
Sep 21 16:34:51 fatzo kernel: [8295975.056046] RPC: ? ? ? Want update, refage=120, age=30
Sep 21 16:35:05 fatzo kernel: [8295989.155466] RPC: ? ? ? Want update, refage=120, age=44
Sep 21 16:35:10 fatzo kernel: [8295994.152029] RPC: ? ? ? Want update, refage=120, age=49
Sep 21 16:35:15 fatzo kernel: [8295999.152050] RPC: ? ? ? Want update, refage=120, age=54
Sep 21 16:35:26 fatzo kernel: [8296010.195221] RPC: ? ? ? Want update, refage=120, age=65
Sep 21 16:35:31 fatzo kernel: [8296015.192028] RPC: ? ? ? Want update, refage=120, age=70
Sep 21 16:35:47 fatzo kernel: [8296031.235390] RPC: ? ? ? Want update, refage=120, age=86
Sep 21 16:35:52 fatzo kernel: [8296036.232029] RPC: ? ? ? Want update, refage=120, age=91
Sep 21 16:35:57 fatzo kernel: [8296041.232100] RPC: ? ? ? Want update, refage=120, age=96
Sep 21 16:36:08 fatzo kernel: [8296052.275643] RPC: ? ? ? Want update, refage=120, age=107
Sep 21 16:36:13 fatzo kernel: [8296057.272027] RPC: ? ? ? Want update, refage=120, age=112
Sep 21 16:36:29 fatzo kernel: [8296073.315985] RPC: ? ? ? Want update, refage=120, age=0
Sep 21 16:36:34 fatzo kernel: [8296078.312026] RPC: ? ? ? Want update, refage=120, age=5
Sep 21 16:36:39 fatzo kernel: [8296083.312096] RPC: ? ? ? Want update, refage=120, age=10
Sep 21 16:36:50 fatzo kernel: [8296094.356721] RPC: ? ? ? Want update, refage=120, age=21
Sep 21 16:36:55 fatzo kernel: [8296099.356097] RPC: ? ? ? Want update, refage=120, age=26
Sep 21 16:37:03 fatzo kernel: [8296107.389078] RPC: ? ? ? Want update, refage=1800, age=903
Sep 21 16:37:11 fatzo kernel: [8296115.367365] RPC: ? ? ? Want update, refage=120, age=42
Sep 21 16:37:16 fatzo kernel: [8296120.364090] RPC: ? ? ? Want update, refage=120, age=47
Sep 21 16:37:21 fatzo kernel: [8296125.364043] RPC: ? ? ? Want update, refage=120, age=52
Sep 21 16:37:33 fatzo kernel: [8296136.418063] RPC: ? ? ? Want update, refage=120, age=63
Sep 21 16:37:38 fatzo kernel: [8296141.416131] RPC: ? ? ? Want update, refage=120, age=68
Sep 21 16:37:54 fatzo kernel: [8296157.441174] RPC: ? ? ? Want update, refage=120, age=85
Sep 21 16:37:59 fatzo kernel: [8296162.440067] RPC: ? ? ? Want update, refage=120, age=90
Sep 21 16:38:04 fatzo kernel: [8296167.440097] RPC: ? ? ? Want update, refage=120, age=95
Sep 21 16:38:15 fatzo kernel: [8296178.501474] RPC: ? ? ? Want update, refage=120, age=106
Sep 21 16:38:19 fatzo kernel: [8296182.467950] RPC: ? ? ? Want update, refage=1800, age=907
Sep 21 16:38:20 fatzo kernel: [8296183.500042] RPC: ? ? ? Want update, refage=120, age=111
Sep 21 16:38:35 fatzo kernel: [8296198.952120] RPC: ? ? ? Want update, refage=120, age=0
Sep 21 16:38:40 fatzo kernel: [8296203.952047] RPC: ? ? ? Want update, refage=120, age=5
Sep 21 16:38:45 fatzo kernel: [8296208.952030] RPC: ? ? ? Want update, refage=120, age=10
Sep 21 16:38:50 fatzo kernel: [8296213.952032] RPC: ? ? ? Want update, refage=120, age=15
Sep 21 16:38:55 fatzo kernel: [8296218.952025] RPC: ? ? ? Want update, refage=120, age=20
Sep 21 16:39:00 fatzo kernel: [8296223.953579] RPC: ? ? ? Want update, refage=120, age=20
tired to find something about this but not much returned,?



----- Original Message -----
From: Jody Gugelhupf <[email protected]>
To: J. Bruce Fields <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Saturday, September 21, 2013 12:51:26 PM
Subject: Re: help with nfs export/mount

thanks a lot!!!

I tried the commands you suggested below for further debug and this one:
cat /proc/net/rpc/nfsd.export/content

showed me a folder that was first "mount --bind" into one of the exported folders and later it was moved from the original storage location but the "mount --bind" wasn't removed, that caused some sort of error and thus the nfs mounts were not working, once i corrected the original location of that "mount --bind" it all worked :)


----- Original Message -----
From: J. Bruce Fields <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 5:15:51 PM
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:46:32AM -0700, Jody Gugelhupf wrote:
> ah ok, i have dropped the?"fsid=0" as you had suggested but had still mounted with "sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc"
> though when doing tab completition on cli it does show?
> ls?/home/jarvis/Videos/xbmc/
> ls?/home/jarvis/Videos/xbmc/home
>
> ls?/home/jarvis/Videos/xbmc/home/user
>
> ls?/home/jarvis/Videos/xbmc/home/user/media
>
> ls?/home/jarvis/Videos/xbmc/home/user/media/Series
>
> and then hangs indeed

That does sound like a kernel or mountd bug.? Possibly it's confused by
the bind mounts.? Could you post the contents of /proc/self/mounts on
the server?

Also, reproduce the hang as above on the client, then as root on the
server, run:

??? rpcdebug -m rpc -s cache
??? cat /proc/net/auth.unix.ip/content
??? cat /proc/net/rpc/nfsd.fh/content
??? cat /proc/net/rpc/nfsd.export/content

and post the output.

Finally if you're up to building the latest nfs-utils and kernel from
source it would be interesting to know whether the bug persists
upstream.

--b.

>
>
>
>
> ----- Original Message -----
> From: J. Bruce Fields <[email protected]>
> To: Jody Gugelhupf <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Thursday, September 19, 2013 4:25:35 PM
> Subject: Re: help with nfs export/mount
>
> On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> > on client side (in order):
> >
> > sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc
>
> As I said, if you've dropped the "fsid=0" (which you should) then you
> should be mounting the real server-side path, not /.
>
> > no error msg, then trying to access the directory:
> > ls?/home/jarvis/Videos/xbmc/home/user/media/Series
> > the console does not react,
>
> So the mount succeeds, but the "ls" hangs?
>
> --b.
>
> > i open a new console and see again?
> > Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> >
> >
> > but i also noticed this (didn't see it before)
> > Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
> >
> >
> >
> > ----- Original Message -----
> > From: J. Bruce Fields <[email protected]>
> > To: Jody Gugelhupf <[email protected]>
> > Cc: "[email protected]" <[email protected]>
> > Sent: Thursday, September 19, 2013 4:08:46 PM
> > Subject: Re: help with nfs export/mount
> >
> > On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > > on server side I see in dmesg this:
> > > [8040437.603605] nfsd: last server has exited, flushing export cache
> > > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > > [8040439.496035] NFSD: starting 90-second grace period
> > >
> > > on client side i only see:
> > > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > > ?is there a way to further debug?
> >
> > Exactly what commands did you type, and what things happened, in what
> > order?
> >
> > --b.
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at? http://vger.kernel.org/majordomo-info.html
>

2013-09-21 10:51:28

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

thanks a lot!!!

I tried the commands you suggested below for further debug and this one:
cat /proc/net/rpc/nfsd.export/content

showed me a folder that was first "mount --bind" into one of the exported folders and later it was moved from the original storage location but the "mount --bind" wasn't removed, that caused some sort of error and thus the nfs mounts were not working, once i corrected the original location of that "mount --bind" it all worked :)


----- Original Message -----
From: J. Bruce Fields <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 5:15:51 PM
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:46:32AM -0700, Jody Gugelhupf wrote:
> ah ok, i have dropped the?"fsid=0" as you had suggested but had still mounted with "sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc"
> though when doing tab completition on cli it does show?
> ls?/home/jarvis/Videos/xbmc/
> ls?/home/jarvis/Videos/xbmc/home
>
> ls?/home/jarvis/Videos/xbmc/home/user
>
> ls?/home/jarvis/Videos/xbmc/home/user/media
>
> ls?/home/jarvis/Videos/xbmc/home/user/media/Series
>
> and then hangs indeed

That does sound like a kernel or mountd bug.? Possibly it's confused by
the bind mounts.? Could you post the contents of /proc/self/mounts on
the server?

Also, reproduce the hang as above on the client, then as root on the
server, run:

??? rpcdebug -m rpc -s cache
??? cat /proc/net/auth.unix.ip/content
??? cat /proc/net/rpc/nfsd.fh/content
??? cat /proc/net/rpc/nfsd.export/content

and post the output.

Finally if you're up to building the latest nfs-utils and kernel from
source it would be interesting to know whether the bug persists
upstream.

--b.

>
>
>
>
> ----- Original Message -----
> From: J. Bruce Fields <[email protected]>
> To: Jody Gugelhupf <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Thursday, September 19, 2013 4:25:35 PM
> Subject: Re: help with nfs export/mount
>
> On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> > on client side (in order):
> >
> > sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc
>
> As I said, if you've dropped the "fsid=0" (which you should) then you
> should be mounting the real server-side path, not /.
>
> > no error msg, then trying to access the directory:
> > ls?/home/jarvis/Videos/xbmc/home/user/media/Series
> > the console does not react,
>
> So the mount succeeds, but the "ls" hangs?
>
> --b.
>
> > i open a new console and see again?
> > Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> >
> >
> > but i also noticed this (didn't see it before)
> > Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
> >
> >
> >
> > ----- Original Message -----
> > From: J. Bruce Fields <[email protected]>
> > To: Jody Gugelhupf <[email protected]>
> > Cc: "[email protected]" <[email protected]>
> > Sent: Thursday, September 19, 2013 4:08:46 PM
> > Subject: Re: help with nfs export/mount
> >
> > On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > > on server side I see in dmesg this:
> > > [8040437.603605] nfsd: last server has exited, flushing export cache
> > > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > > [8040439.496035] NFSD: starting 90-second grace period
> > >
> > > on client side i only see:
> > > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > > ?is there a way to further debug?
> >
> > Exactly what commands did you type, and what things happened, in what
> > order?
> >
> > --b.
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at? http://vger.kernel.org/majordomo-info.html
>

2013-09-19 14:25:36

by J. Bruce Fields

[permalink] [raw]
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> on client side (in order):
>
> sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc

As I said, if you've dropped the "fsid=0" (which you should) then you
should be mounting the real server-side path, not /.

> no error msg, then trying to access the directory:
> ls /home/jarvis/Videos/xbmc/home/user/media/Series
> the console does not react,

So the mount succeeds, but the "ls" hangs?

--b.

> i open a new console and see again 
> Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
>
>
> but i also noticed this (didn't see it before)
> Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
>
>
>
> ----- Original Message -----
> From: J. Bruce Fields <[email protected]>
> To: Jody Gugelhupf <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Thursday, September 19, 2013 4:08:46 PM
> Subject: Re: help with nfs export/mount
>
> On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > on server side I see in dmesg this:
> > [8040437.603605] nfsd: last server has exited, flushing export cache
> > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > [8040439.496035] NFSD: starting 90-second grace period
> >
> > on client side i only see:
> > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> >  is there a way to further debug?
>
> Exactly what commands did you type, and what things happened, in what
> order?
>
> --b.
>

2013-09-19 13:40:29

by J. Bruce Fields

[permalink] [raw]
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 06:31:41AM -0700, Jody Gugelhupf wrote:
> Thanks also for your response, I have tried you suggestion of: 
>     /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_check,no_subtree_check)
>
> but got an error that 'no_root_check' was unknown, so i suppose just a type and meant was:
>     /home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check)
>
>
> but still it does not work, not only on ubuntu but also not on xbmc (openelec/rpi)

Could you explain exactly how it fails?

--b.

2013-09-21 14:46:02

by J. Bruce Fields

[permalink] [raw]
Subject: Re: help with nfs export/mount

On Sat, Sep 21, 2013 at 07:36:24AM -0700, Jody Gugelhupf wrote:
> but now my syslog and dmesg on nfs serverside is full of these msg'es:

rpcdebug -m rpc -c all

--b.

>
> Sep 21 16:34:13 fatzo kernel: [8295937.032636] RPC:       Want update, refage=120, age=116
> Sep 21 16:34:21 fatzo kernel: [8295945.056091] RPC:       Want update, refage=120, age=0
> Sep 21 16:34:26 fatzo kernel: [8295950.056027] RPC:       Want update, refage=120, age=5
> Sep 21 16:34:31 fatzo kernel: [8295955.056024] RPC:       Want update, refage=120, age=10
> Sep 21 16:34:36 fatzo kernel: [8295960.056024] RPC:       Want update, refage=120, age=15
> Sep 21 16:34:41 fatzo kernel: [8295965.056095] RPC:       Want update, refage=120, age=20
> Sep 21 16:34:46 fatzo kernel: [8295970.056030] RPC:       Want update, refage=120, age=25
> Sep 21 16:34:51 fatzo kernel: [8295975.056046] RPC:       Want update, refage=120, age=30
> Sep 21 16:35:05 fatzo kernel: [8295989.155466] RPC:       Want update, refage=120, age=44
> Sep 21 16:35:10 fatzo kernel: [8295994.152029] RPC:       Want update, refage=120, age=49
> Sep 21 16:35:15 fatzo kernel: [8295999.152050] RPC:       Want update, refage=120, age=54
> Sep 21 16:35:26 fatzo kernel: [8296010.195221] RPC:       Want update, refage=120, age=65
> Sep 21 16:35:31 fatzo kernel: [8296015.192028] RPC:       Want update, refage=120, age=70
> Sep 21 16:35:47 fatzo kernel: [8296031.235390] RPC:       Want update, refage=120, age=86
> Sep 21 16:35:52 fatzo kernel: [8296036.232029] RPC:       Want update, refage=120, age=91
> Sep 21 16:35:57 fatzo kernel: [8296041.232100] RPC:       Want update, refage=120, age=96
> Sep 21 16:36:08 fatzo kernel: [8296052.275643] RPC:       Want update, refage=120, age=107
> Sep 21 16:36:13 fatzo kernel: [8296057.272027] RPC:       Want update, refage=120, age=112
> Sep 21 16:36:29 fatzo kernel: [8296073.315985] RPC:       Want update, refage=120, age=0
> Sep 21 16:36:34 fatzo kernel: [8296078.312026] RPC:       Want update, refage=120, age=5
> Sep 21 16:36:39 fatzo kernel: [8296083.312096] RPC:       Want update, refage=120, age=10
> Sep 21 16:36:50 fatzo kernel: [8296094.356721] RPC:       Want update, refage=120, age=21
> Sep 21 16:36:55 fatzo kernel: [8296099.356097] RPC:       Want update, refage=120, age=26
> Sep 21 16:37:03 fatzo kernel: [8296107.389078] RPC:       Want update, refage=1800, age=903
> Sep 21 16:37:11 fatzo kernel: [8296115.367365] RPC:       Want update, refage=120, age=42
> Sep 21 16:37:16 fatzo kernel: [8296120.364090] RPC:       Want update, refage=120, age=47
> Sep 21 16:37:21 fatzo kernel: [8296125.364043] RPC:       Want update, refage=120, age=52
> Sep 21 16:37:33 fatzo kernel: [8296136.418063] RPC:       Want update, refage=120, age=63
> Sep 21 16:37:38 fatzo kernel: [8296141.416131] RPC:       Want update, refage=120, age=68
> Sep 21 16:37:54 fatzo kernel: [8296157.441174] RPC:       Want update, refage=120, age=85
> Sep 21 16:37:59 fatzo kernel: [8296162.440067] RPC:       Want update, refage=120, age=90
> Sep 21 16:38:04 fatzo kernel: [8296167.440097] RPC:       Want update, refage=120, age=95
> Sep 21 16:38:15 fatzo kernel: [8296178.501474] RPC:       Want update, refage=120, age=106
> Sep 21 16:38:19 fatzo kernel: [8296182.467950] RPC:       Want update, refage=1800, age=907
> Sep 21 16:38:20 fatzo kernel: [8296183.500042] RPC:       Want update, refage=120, age=111
> Sep 21 16:38:35 fatzo kernel: [8296198.952120] RPC:       Want update, refage=120, age=0
> Sep 21 16:38:40 fatzo kernel: [8296203.952047] RPC:       Want update, refage=120, age=5
> Sep 21 16:38:45 fatzo kernel: [8296208.952030] RPC:       Want update, refage=120, age=10
> Sep 21 16:38:50 fatzo kernel: [8296213.952032] RPC:       Want update, refage=120, age=15
> Sep 21 16:38:55 fatzo kernel: [8296218.952025] RPC:       Want update, refage=120, age=20
> Sep 21 16:39:00 fatzo kernel: [8296223.953579] RPC:       Want update, refage=120, age=20
> tired to find something about this but not much returned, 
>
>
>
> ----- Original Message -----
> From: Jody Gugelhupf <[email protected]>
> To: J. Bruce Fields <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Saturday, September 21, 2013 12:51:26 PM
> Subject: Re: help with nfs export/mount
>
> thanks a lot!!!
>
> I tried the commands you suggested below for further debug and this one:
> cat /proc/net/rpc/nfsd.export/content
>
> showed me a folder that was first "mount --bind" into one of the exported folders and later it was moved from the original storage location but the "mount --bind" wasn't removed, that caused some sort of error and thus the nfs mounts were not working, once i corrected the original location of that "mount --bind" it all worked :)
>
>
> ----- Original Message -----
> From: J. Bruce Fields <[email protected]>
> To: Jody Gugelhupf <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Thursday, September 19, 2013 5:15:51 PM
> Subject: Re: help with nfs export/mount
>
> On Thu, Sep 19, 2013 at 07:46:32AM -0700, Jody Gugelhupf wrote:
> > ah ok, i have dropped the "fsid=0" as you had suggested but had still mounted with "sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc"
> > though when doing tab completition on cli it does show 
> > ls /home/jarvis/Videos/xbmc/
> > ls /home/jarvis/Videos/xbmc/home
> >
> > ls /home/jarvis/Videos/xbmc/home/user
> >
> > ls /home/jarvis/Videos/xbmc/home/user/media
> >
> > ls /home/jarvis/Videos/xbmc/home/user/media/Series
> >
> > and then hangs indeed
>
> That does sound like a kernel or mountd bug.  Possibly it's confused by
> the bind mounts.  Could you post the contents of /proc/self/mounts on
> the server?
>
> Also, reproduce the hang as above on the client, then as root on the
> server, run:
>
>     rpcdebug -m rpc -s cache
>     cat /proc/net/auth.unix.ip/content
>     cat /proc/net/rpc/nfsd.fh/content
>     cat /proc/net/rpc/nfsd.export/content
>
> and post the output.
>
> Finally if you're up to building the latest nfs-utils and kernel from
> source it would be interesting to know whether the bug persists
> upstream.
>
> --b.
>
> >
> >
> >
> >
> > ----- Original Message -----
> > From: J. Bruce Fields <[email protected]>
> > To: Jody Gugelhupf <[email protected]>
> > Cc: "[email protected]" <[email protected]>
> > Sent: Thursday, September 19, 2013 4:25:35 PM
> > Subject: Re: help with nfs export/mount
> >
> > On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> > > on client side (in order):
> > >
> > > sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc
> >
> > As I said, if you've dropped the "fsid=0" (which you should) then you
> > should be mounting the real server-side path, not /.
> >
> > > no error msg, then trying to access the directory:
> > > ls /home/jarvis/Videos/xbmc/home/user/media/Series
> > > the console does not react,
> >
> > So the mount succeeds, but the "ls" hangs?
> >
> > --b.
> >
> > > i open a new console and see again 
> > > Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > >
> > >
> > > but i also noticed this (didn't see it before)
> > > Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: J. Bruce Fields <[email protected]>
> > > To: Jody Gugelhupf <[email protected]>
> > > Cc: "[email protected]" <[email protected]>
> > > Sent: Thursday, September 19, 2013 4:08:46 PM
> > > Subject: Re: help with nfs export/mount
> > >
> > > On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > > > on server side I see in dmesg this:
> > > > [8040437.603605] nfsd: last server has exited, flushing export cache
> > > > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > > > [8040439.496035] NFSD: starting 90-second grace period
> > > >
> > > > on client side i only see:
> > > > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > > >  is there a way to further debug?
> > >
> > > Exactly what commands did you type, and what things happened, in what
> > > order?
> > >
> > > --b.
> > >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> > the body of a message to [email protected]
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

2013-09-19 15:15:52

by J. Bruce Fields

[permalink] [raw]
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:46:32AM -0700, Jody Gugelhupf wrote:
> ah ok, i have dropped the "fsid=0" as you had suggested but had still mounted with "sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc"
> though when doing tab completition on cli it does show 
> ls /home/jarvis/Videos/xbmc/
> ls /home/jarvis/Videos/xbmc/home
>
> ls /home/jarvis/Videos/xbmc/home/user
>
> ls /home/jarvis/Videos/xbmc/home/user/media
>
> ls /home/jarvis/Videos/xbmc/home/user/media/Series
>
> and then hangs indeed

That does sound like a kernel or mountd bug. Possibly it's confused by
the bind mounts. Could you post the contents of /proc/self/mounts on
the server?

Also, reproduce the hang as above on the client, then as root on the
server, run:

rpcdebug -m rpc -s cache
cat /proc/net/auth.unix.ip/content
cat /proc/net/rpc/nfsd.fh/content
cat /proc/net/rpc/nfsd.export/content

and post the output.

Finally if you're up to building the latest nfs-utils and kernel from
source it would be interesting to know whether the bug persists
upstream.

--b.

>
>
>
>
> ----- Original Message -----
> From: J. Bruce Fields <[email protected]>
> To: Jody Gugelhupf <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Thursday, September 19, 2013 4:25:35 PM
> Subject: Re: help with nfs export/mount
>
> On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> > on client side (in order):
> >
> > sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc
>
> As I said, if you've dropped the "fsid=0" (which you should) then you
> should be mounting the real server-side path, not /.
>
> > no error msg, then trying to access the directory:
> > ls /home/jarvis/Videos/xbmc/home/user/media/Series
> > the console does not react,
>
> So the mount succeeds, but the "ls" hangs?
>
> --b.
>
> > i open a new console and see again 
> > Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> >
> >
> > but i also noticed this (didn't see it before)
> > Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
> >
> >
> >
> > ----- Original Message -----
> > From: J. Bruce Fields <[email protected]>
> > To: Jody Gugelhupf <[email protected]>
> > Cc: "[email protected]" <[email protected]>
> > Sent: Thursday, September 19, 2013 4:08:46 PM
> > Subject: Re: help with nfs export/mount
> >
> > On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > > on server side I see in dmesg this:
> > > [8040437.603605] nfsd: last server has exited, flushing export cache
> > > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > > [8040439.496035] NFSD: starting 90-second grace period
> > >
> > > on client side i only see:
> > > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > >  is there a way to further debug?
> >
> > Exactly what commands did you type, and what things happened, in what
> > order?
> >
> > --b.
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

2013-09-19 11:52:57

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

thanks for the response:?
sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc


cat /proc/mounts

192.168.2.3:/home/user/media/?/home/jarvis/Videos/xbmc nfs rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.2.3,mountvers=3,mountport=56597,mountproto=udp,local_lock=none,addr=192.168.2.3 0 0


so umounted and tried as you suggested:
sudo?mount 192.168.2.3:/ /home/jarvis/Videos/xbmc

cat /proc/mounts

192.168.2.3:/ /home/jarvis/Videos/xbmc nfs4 rw,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.2.101,minorversion=0,local_lock=none,addr=192.168.2.3 0 0


but still same problem, should i nfs mount all the subdirectories on the client side? other ideas? thank you in advance :)





----- Original Message -----
From: Malahal Naineni <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 1:36:02 PM
Subject: Re: help with nfs export/mount

Jody Gugelhupf [[email protected]] wrote:
> i'm currently using samba for fileshares with my media center (xbmc/openelec on a pi). I have a server on the network with 20 different harddisks on this system that contain all my media. I have directory "/home/user/media" on my server into which i "mount --bind" all the media i want to be accessible on xbmc (on the pi) or on other computers on the local network. To give you an idea of the mounts on my server:
>
> /home/user/media#located on /dev/sda
> /home/user/media/Movies#located on /dev/sdf used 'mount --bind /dev/sdf/Movies /home/user/media/Movies'
> /home/user/media/Series#located on /dev/sda has +300 sub directories, that i created within '/home/user/media/Series' and 'mount --bind' from all other locations/hdd's into the respective folder within '/home/user/media/Series'?e.g.
> /home/user/media/Series/24#located on /dev/sdb used 'mount --bind /dev/sdb/24 /home/user/media/Series/24'?
> /home/user/media/Series/Star.Trek#located on /dev/sdc used 'mount --bind' and so forth but also:
> /home/user/media/Series/Animation#located on /dev/sda has +30 sub directories, e.g.
> /home/user/media/Series/Animation/Ben10#located on /dev/sdz used 'mount --bind /dev/sdz/Ben10 /home/user/media/Series/Animation/Ben10'
>
> a more elaborate list here:?http://pastebin.com/DhUA5tks
>
> this all works fine, but I was told NFS would be faster so i wanted to give it a try. the server runs ubuntu 12.04.2, kernel 3.2.0-48-generic x86_64, up to date NFSv4. After installing NFS I tried simple exports (one folder without any sub directories that have no 'mount --bind' in them) and accessing them works fine. So now I thought to export the '/home/user/media' directory?but using the samba setup as described from above does not work. Ideally, I would like to have to nfs mount only?'/home/user/media' and have all the 'mount --bind' folders accessible on the server also accessible on all clients.
> Rather then using the xbmc/pi mentioned above I use my laptop with ubuntu to test the export mounts as a client. In samba it was enough to share the parent folder, in this case '/home/user/media' and everything below that share would be visible but as i understand this is not the case in nfs, I need to specify each sub directory that is 'mount --bind' (from a different file system) in the export.
>
> my export file:
> /home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> I also have tried 'crossmnt' instead of 'nohide' as I'm using a subnet and that appears to be problematic at times.?
> /home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
>
> Same result.
>
> I also have tried 'nohide' and then specified only the client IP instead of subnet info.
> /home/user/media/ ? ? ??192.168.2.101(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> Also does not work.
>
> In all the above scenarios I manage to mount on client side:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc

I am assuming this worked fine, correct? Are you using NFSv3 or V4? User
(cat /proc/mounts to see if that is mounted with NFSv4 or V3). For
V4, the following should work:

mount 192.168.2.3:/ /home/jarvis/Videos/xbmc

> but when i try to mount in any of the above described scenarios i get timeout e.g.:
>
> sudo mount -t nfs 192.168.2.3:/home/user/media/Movies /home/jarvis/Videos/xbmc/Movies
>
> What I would want is to only mount the parent export on the client side, e.g.:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
> and have all directories/files that are available on the server side under '/home/user/media/' to be available on client side under '/home/jarvis/Videos/xbmc' as I have with samba at the moment
>
> how to achieve this?

You should be able to achieve this with NFSv4.

Regards, Malahal.

2013-09-19 13:14:30

by J. Bruce Fields

[permalink] [raw]
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 02:26:46AM -0700, Jody Gugelhupf wrote:
> i'm currently using samba for fileshares with my media center (xbmc/openelec on a pi). I have a server on the network with 20 different harddisks on this system that contain all my media. I have directory "/home/user/media" on my server into which i "mount --bind" all the media i want to be accessible on xbmc (on the pi) or on other computers on the local network. To give you an idea of the mounts on my server:
>
> /home/user/media#located on /dev/sda
> /home/user/media/Movies#located on /dev/sdf used 'mount --bind /dev/sdf/Movies /home/user/media/Movies'
> /home/user/media/Series#located on /dev/sda has +300 sub directories, that i created within '/home/user/media/Series' and 'mount --bind' from all other locations/hdd's into the respective folder within '/home/user/media/Series' e.g.
> /home/user/media/Series/24#located on /dev/sdb used 'mount --bind /dev/sdb/24 /home/user/media/Series/24' 
> /home/user/media/Series/Star.Trek#located on /dev/sdc used 'mount --bind' and so forth but also:
> /home/user/media/Series/Animation#located on /dev/sda has +30 sub directories, e.g.
> /home/user/media/Series/Animation/Ben10#located on /dev/sdz used 'mount --bind /dev/sdz/Ben10 /home/user/media/Series/Animation/Ben10'
>
> a more elaborate list here: http://pastebin.com/DhUA5tks
>
> this all works fine, but I was told NFS would be faster so i wanted to give it a try. the server runs ubuntu 12.04.2, kernel 3.2.0-48-generic x86_64, up to date NFSv4. After installing NFS I tried simple exports (one folder without any sub directories that have no 'mount --bind' in them) and accessing them works fine. So now I thought to export the '/home/user/media' directory but using the samba setup as described from above does not work. Ideally, I would like to have to nfs mount only '/home/user/media' and have all the 'mount --bind' folders accessible on the server also accessible on all clients.
> Rather then using the xbmc/pi mentioned above I use my laptop with ubuntu to test the export mounts as a client. In samba it was enough to share the parent folder, in this case '/home/user/media' and everything below that share would be visible but as i understand this is not the case in nfs, I need to specify each sub directory that is 'mount --bind' (from a different file system) in the export.

No, it should actually be sufficient just to export the parent. Also,
we don't recommend fsid=0 any longer. Also, "async" should be avoided.
So just:

/home/user/media/ 192.168.2.0/24(rw,insecure,crossmnt,no_root_check,no_subtree_check)

and you mount that with "mount myserver:/home/user/media /mymountpoint".

(Note the "crossmnt", which tells the server to export all the children
automatically.)

If that doesn't work you've probably found a bug. I'd recommend
reporting that to Ubuntu, and/or here if you can reproduce with recent
kernel and nfs-utils.

--b.

>
> my export file:
> /home/user/media/       192.168.2.0/24(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2       192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> I also have tried 'crossmnt' instead of 'nohide' as I'm using a subnet and that appears to be problematic at times. 
> /home/user/media/       192.168.2.0/24(rw,insecure,fsid=0,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2       192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
>
> Same result.
>
> I also have tried 'nohide' and then specified only the client IP instead of subnet info.
> /home/user/media/       192.168.2.101(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2       192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> Also does not work.
>
> In all the above scenarios I manage to mount on client side:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
>
> but when i try to mount in any of the above described scenarios i get timeout e.g.:
>
> sudo mount -t nfs 192.168.2.3:/home/user/media/Movies /home/jarvis/Videos/xbmc/Movies
>
> What I would want is to only mount the parent export on the client side, e.g.:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
> and have all directories/files that are available on the server side under '/home/user/media/' to be available on client side under '/home/jarvis/Videos/xbmc' as I have with samba at the moment
>
> how to achieve this?
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html

2013-09-19 14:21:05

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

on client side (in order):

sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc

no error msg, then trying to access the directory:
ls?/home/jarvis/Videos/xbmc/home/user/media/Series
the console does not react, i open a new console and see again?
Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying


but i also noticed this (didn't see it before)
Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'



----- Original Message -----
From: J. Bruce Fields <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 4:08:46 PM
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> on server side I see in dmesg this:
> [8040437.603605] nfsd: last server has exited, flushing export cache
> [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> [8040439.496035] NFSD: starting 90-second grace period
>
> on client side i only see:
> Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> ?is there a way to further debug?

Exactly what commands did you type, and what things happened, in what
order?

--b.


2013-09-19 14:52:58

by Jody Gugelhupf

[permalink] [raw]
Subject: Re: help with nfs export/mount

ah ok, i have dropped the?"fsid=0" as you had suggested but had still mounted with "sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc"
though when doing tab completition on cli it does show?
ls?/home/jarvis/Videos/xbmc/
ls?/home/jarvis/Videos/xbmc/home

ls?/home/jarvis/Videos/xbmc/home/user

ls?/home/jarvis/Videos/xbmc/home/user/media

ls?/home/jarvis/Videos/xbmc/home/user/media/Series

and then hangs indeed




----- Original Message -----
From: J. Bruce Fields <[email protected]>
To: Jody Gugelhupf <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, September 19, 2013 4:25:35 PM
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> on client side (in order):
>
> sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc

As I said, if you've dropped the "fsid=0" (which you should) then you
should be mounting the real server-side path, not /.

> no error msg, then trying to access the directory:
> ls?/home/jarvis/Videos/xbmc/home/user/media/Series
> the console does not react,

So the mount succeeds, but the "ls" hangs?

--b.

> i open a new console and see again?
> Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
>
>
> but i also noticed this (didn't see it before)
> Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
>
>
>
> ----- Original Message -----
> From: J. Bruce Fields <[email protected]>
> To: Jody Gugelhupf <[email protected]>
> Cc: "[email protected]" <[email protected]>
> Sent: Thursday, September 19, 2013 4:08:46 PM
> Subject: Re: help with nfs export/mount
>
> On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > on server side I see in dmesg this:
> > [8040437.603605] nfsd: last server has exited, flushing export cache
> > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > [8040439.496035] NFSD: starting 90-second grace period
> >
> > on client side i only see:
> > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > ?is there a way to further debug?
>
> Exactly what commands did you type, and what things happened, in what
> order?
>
> --b.
>

2013-09-19 14:08:52

by J. Bruce Fields

[permalink] [raw]
Subject: Re: help with nfs export/mount

On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> on server side I see in dmesg this:
> [8040437.603605] nfsd: last server has exited, flushing export cache
> [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> [8040439.496035] NFSD: starting 90-second grace period
>
> on client side i only see:
> Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
>  is there a way to further debug?

Exactly what commands did you type, and what things happened, in what
order?

--b.

2013-09-19 11:36:08

by Malahal Naineni

[permalink] [raw]
Subject: Re: help with nfs export/mount

Jody Gugelhupf [[email protected]] wrote:
> i'm currently using samba for fileshares with my media center (xbmc/openelec on a pi). I have a server on the network with 20 different harddisks on this system that contain all my media. I have directory "/home/user/media" on my server into which i "mount --bind" all the media i want to be accessible on xbmc (on the pi) or on other computers on the local network. To give you an idea of the mounts on my server:
>
> /home/user/media#located on /dev/sda
> /home/user/media/Movies#located on /dev/sdf used 'mount --bind /dev/sdf/Movies /home/user/media/Movies'
> /home/user/media/Series#located on /dev/sda has +300 sub directories, that i created within '/home/user/media/Series' and 'mount --bind' from all other locations/hdd's into the respective folder within '/home/user/media/Series'?e.g.
> /home/user/media/Series/24#located on /dev/sdb used 'mount --bind /dev/sdb/24 /home/user/media/Series/24'?
> /home/user/media/Series/Star.Trek#located on /dev/sdc used 'mount --bind' and so forth but also:
> /home/user/media/Series/Animation#located on /dev/sda has +30 sub directories, e.g.
> /home/user/media/Series/Animation/Ben10#located on /dev/sdz used 'mount --bind /dev/sdz/Ben10 /home/user/media/Series/Animation/Ben10'
>
> a more elaborate list here:?http://pastebin.com/DhUA5tks
>
> this all works fine, but I was told NFS would be faster so i wanted to give it a try. the server runs ubuntu 12.04.2, kernel 3.2.0-48-generic x86_64, up to date NFSv4. After installing NFS I tried simple exports (one folder without any sub directories that have no 'mount --bind' in them) and accessing them works fine. So now I thought to export the '/home/user/media' directory?but using the samba setup as described from above does not work. Ideally, I would like to have to nfs mount only?'/home/user/media' and have all the 'mount --bind' folders accessible on the server also accessible on all clients.
> Rather then using the xbmc/pi mentioned above I use my laptop with ubuntu to test the export mounts as a client. In samba it was enough to share the parent folder, in this case '/home/user/media' and everything below that share would be visible but as i understand this is not the case in nfs, I need to specify each sub directory that is 'mount --bind' (from a different file system) in the export.
>
> my export file:
> /home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> I also have tried 'crossmnt' instead of 'nohide' as I'm using a subnet and that appears to be problematic at times.?
> /home/user/media/ ? ? ? 192.168.2.0/24(rw,insecure,fsid=0,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34? ? ? ?192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ? 192.168.2.0/24(rw,insecure,crossmnt,no_root_squash,no_subtree_check,async)
>
> Same result.
>
> I also have tried 'nohide' and then specified only the client IP instead of subnet info.
> /home/user/media/ ? ? ??192.168.2.101(rw,insecure,fsid=0,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Movies ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_33 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/show_34 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_1 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
> /home/user/media/Series/Animations/show_2 ? ? ??192.168.2.101(rw,insecure,nohide,no_root_squash,no_subtree_check,async)
>
> Also does not work.
>
> In all the above scenarios I manage to mount on client side:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc

I am assuming this worked fine, correct? Are you using NFSv3 or V4? User
(cat /proc/mounts to see if that is mounted with NFSv4 or V3). For
V4, the following should work:

mount 192.168.2.3:/ /home/jarvis/Videos/xbmc

> but when i try to mount in any of the above described scenarios i get timeout e.g.:
>
> sudo mount -t nfs 192.168.2.3:/home/user/media/Movies /home/jarvis/Videos/xbmc/Movies
>
> What I would want is to only mount the parent export on the client side, e.g.:
> sudo mount -t nfs 192.168.2.3:/home/user/media/ /home/jarvis/Videos/xbmc
> and have all directories/files that are available on the server side under '/home/user/media/' to be available on client side under '/home/jarvis/Videos/xbmc' as I have with samba at the moment
>
> how to achieve this?

You should be able to achieve this with NFSv4.

Regards, Malahal.