Hi,
I have two Linux NFS problems disclosed here.
Problem # 1 "pivot_root" failure issue
(is probably less important vs Problem # 2 - see below, but the info for the # 1 is also needed for # 2) :
Please note that PQ2FADS-VR is an embedded diskless board,
booted with (old) ramdisk (from W. Denk) with BusyBox v0.60.1and
then manually mounting (specifying NFS version 2 as it was suggested by you in 1) ) onto NFS file
system (from where lmbench is executed),
provided on the Linux "file server" PC running Linux Red Hat 9 Shrike.
During the "manual"mount with specifying NFS version 2, several warnings are thrown ...
but after a while the mount gets complete ...
A)
************************
tftpboot 200000 uimage
...
bootm 200000 FF800000
...
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 272k init
serial console detected. Disabling virtual terminals.
### Application running ...
BusyBox v0.60.1 (2002.10.24-02:29+0000) Built-in shell (msh)
Enter 'help' for a list of built-in commands.
#mkdir /fadsroot
# ls -l /
drwxr-xr-x 2 0 0 2048 Jan 1 01:29 bin
drwxr-xr-x 2 0 0 3072 Jan 1 00:00 dev
drwxr-xr-x 5 0 0 1024 Jan 1 00:00 etc
drwxrwxrwx 38 0 0 4096 Oct 7 2004 fadsroot
drwxr-xr-x 2 0 0 1024 Jan 1 00:00 ftp
drwxr-xr-x 2 0 0 1024 Jan 1 00:00 home
drwxr-xr-x 3 0 0 1024 Jan 1 01:29 lib
dr-xr-xr-x 25 0 0 0 Jan 1 00:00 proc
drwxr-xr-x 2 0 0 1024 Jan 1 00:00 sbin
drwxr-xr-x 2 0 0 1024 Jan 1 00:00 tmp
drwxr-xr-x 4 0 0 1024 Jan 1 00:00 usr
drwxr-xr-x 4 0 0 1024 Jan 1 00:00 var
# portmap
portmap: not found
# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:17:40:00:03
inet addr:192.168.0.5 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:19 errors:0 dropped:0 overruns:0 frame:0
TX packets:15 errors:0 dropped:0 overruns:0 carrier:15
collisions:0 txqueuelen:1000
RX bytes:2056 (2.0 kb) TX bytes:1488 (1.4 kb)
Base address:0x8500
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
# mount
rootfs on / type rootfs (rw)
/dev/ram0 on / type ext2 (rw)
/proc on /proc type proc (rw,nodiratime)
#mount -o mountvers=2 192.168.0.3:/fadsroot /fadsroot
fs warning: mount version older than kernel
portmap: server localhost not responding, timed out
RPC: failed to contact portmap (errno -5).
portmap: server localhost not responding, timed out
RPC: failed to contact portmap (errno -5).
lockd_up: makesock failed, error=-5
portmap: server localhost not responding, timed out
RPC: failed to contact portmap (errno -5).
#
# mount
rootfs on / type rootfs (rw)
/dev/ram0 on / type ext2 (rw)
/proc on /proc type proc (rw,nodiratime)
192.168.0.3:/fadsroot on /fadsroot type nfs (rw,v2,rsize=8192,wsize=8192,hard,ud
p,lock,addr=192.168.0.3)
# ps
PID Uid Stat Command
1 root S init
2 root R [ksoftirqd/0]
3 root S [events/0]
4 root S [khelper]
5 root S [kblockd/0]
6 root S [pdflush]
7 root S [pdflush]
8 root S [kswapd0]
9 root S [aio/0]
15 root S /usr/sbin/xinetd -stayalive -reuse -pidfile /tmp/xinetd.pid
138 root S [rpciod]
253 root S -sh
254 root S /bin/sh /bin/application
256 root S sleep 300
258 root R ps
# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:17:40:00:03
inet addr:192.168.0.5 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:122 errors:0 dropped:0 overruns:0 frame:0
TX packets:114 errors:0 dropped:0 overruns:0 carrier:114
collisions:0 txqueuelen:1000
RX bytes:20747 (20.2 kb) TX bytes:14320 (13.9 kb)
Base address:0x8500
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
# cd /fadsroot
#sbin/pivot_root /fadsroot /tmp
pivot_root: pivot_root: Device or resource busy
Note that using additionally -o noolock option while doung mount allows to get rid of warnings during mounting but does fix
the pivot_root failure.
*************************************************************
I am not an expert on Red Hat 9 Linux either(though I "manage" that machine ;-)),
but on that machine portmap is running there and /fadsroot is exported for NFS mounting also:
B)
**************************************************
[root@localhost root]# uname -a
Linux localhost.localdomain 2.4.20-28.9 #1 Thu Dec 18 13:45:22 EST 2003 i686 i686 i386 GNU/Linux
[root@localhost root]# rpm -qa | grep portmap
portmap-4.0-54
[root@localhost root]# rpm -qa | grep nfs
nfs-utils-1.0.1-3.9
redhat-config-nfs-1.0.4-5
[root@localhost root]# rpcinfo -p localhost
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 1024 status
100024 1 tcp 1024 status
391002 2 tcp 1025 sgi_fam
100011 1 udp 999 rquotad
100011 2 udp 999 rquotad
100011 1 tcp 1002 rquotad
100011 2 tcp 1002 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100021 1 udp 1026 nlockmgr
100021 3 udp 1026 nlockmgr
100021 4 udp 1026 nlockmgr
100005 1 udp 1027 mountd
100005 1 tcp 1026 mountd
100005 2 udp 1027 mountd
100005 2 tcp 1026 mountd
100005 3 udp 1027 mountd
100005 3 tcp 1026 mountd
[root@localhost root]# cat /etc/exports
/fadsroot *(rw,no_root_squash,async)
[root@localhost root]# showmount -e
Export list for localhost.localdomain:
/fadsroot *
***********************************************
Note from above in A) that I am also not able to "pivot_root" on my board onto that mounted file system
thereafter (though on the board the portmap is not running ...I think .. and loopback is configured)
- getting error: "pivot_root: Device or resource busy".
I have limited tools on that board at that time to figure out what keeps old root busy
(outdated libc.so library, provided with ramdisk, which I can not replace on the fly,
prevents adding/running rpcinfo and lsof).
Problem #2
I am also not able to boot "straight" (i.e., without ramdisk) - with NFS mounting the root file system
onto the same (as described above) Linux "file server" PC running Linux Red Hat 9 Shrike
(with the same settings as it is described above) -
this does not work - I am getting kernel panic "Attempted to kill init!"- see below C)
(That is why I am booting with ramdisk instead).
This kernel panic is puzzling (given that with ramdisk I could boot now ).
So perhaps the problem is again in the NFS version incompatibility ???
But this time it is not BusyBox from ramdisk ... but perhaps an attempt to run BusyBox from /fadsroot
(it is there too, but more "current version" ) during the boot is failing in this case ?
... and the kernel on my board during booting does not "know", that it needs to use NFS version 2
during mounting ?
Should the kernel be configured to
allow to NFS mount root file system onto the NFS server with version 2 ?
I do not see the kernel option to configure NFS version 2 ...
Here is what I have:
CONFIG_NFS_FS=y
# CONFIG_NFS_V3 is not set
# CONFIG_NFS_V4 is not set
# CONFIG_NFS_DIRECTIO is not set
# CONFIG_NFSD is not set
CONFIG_ROOT_NFS=y
CONFIG_LOCKD=y
C)
***************************************************************
=> printenv
bootdelay=5
bootcmd=bootm 200000
ethaddr=08:00:17:00:00:03
serverip=192.168.0.3
ipaddr=192.168.0.5
baudrate=9600
bootargs=root=/dev/nfs rw nfsroot=192.168.0.4:/fadsroot
stdin=serial
stdout=serial
stderr=serial
Environment size: 210/262140 bytes
=> tftpboot 200000 uimage
Using FCC2 ETHERNET device
TFTP from server 192.168.0.3; our IP address is 192.168.0.5
Filename 'uimage'.
Load address: 0x200000
Loading: #################################################################
#################################################################
#######################################
done
Bytes transferred = 864364 (d306c hex)
=> bootm 200000
## Booting image at 00200000 ...
Image Name: Linux-2.6.8-rc4
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 864300 Bytes = 844 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Linux version 2.6.8-rc4 (apovolot@USPITLAD104868) (gcc version 3.3.2) #5 Mon Aug
16 08:49:38 EDT 2004
PQ2 ADS Port
Built 1 zonelists
Kernel command line: root=/dev/nfs rw nfsroot=192.168.0.4:/fadsroot nobats ip=19
2.168.0.5
PID hash table entries: 256 (order 8: 2048 bytes)
Warning: real time clock seems stuck!
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 30432k available (1348k kernel code, 324k data, 272k init, 0k highmem)
Calibrating delay loop... 131.07 BogoMIPS
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
NET: Registered protocol family 16
PCI: Probing PCI hardware
Generic RTC Driver v1.07
Serial: CPM driver $Revision: 0.01 $
ttyCPM0 at MMIO 0xf0011a00 (irq = 40) is a CPM UART
RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize
loop: loaded (max 8 devices)
eth0: FCC ENET Version 0.3, 08:00:17:40:00:03
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 2048 bind 4096)
NET: Registered protocol family 1
NET: Registered protocol family 17
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Complete:
device=eth0, addr=192.168.0.5, mask=255.255.255.0, gw=255.255.255.255,
host=192.168.0.5, domain=, nis-domain=(none),
bootserver=255.255.255.255, rootserver=192.168.0.4, rootpath=
Looking up port of RPC 100003/2 on 192.168.0.4
Looking up port of RPC 100005/1 on 192.168.0.4
VFS: Mounted root (nfs filesystem).
Freeing unused kernel memory: 272k init
Kernel panic: Attempted to kill init!
<0>Rebooting in 180 seconds..
Any comment/opinion/solution/ ?
Thanks,
Best Regards,
Your input/comments/advise is APPRECIATED in advance !,
Alex
________________________________________________________________
Speed up your surfing with Juno SpeedBand.
Now includes pop-up blocker!
Only $14.95/ month - visit http://www.juno.com/surf to sign up today!
-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
P=E5 m=E5 , 11/10/2004 klokka 23:19, skreiv Alexander Povolotsky:
> # cd /fadsroot
> #sbin/pivot_root /fadsroot /tmp
> pivot_root: pivot_root: Device or resource busy
What does this have to do with NFS?
man pivot_root.
EBUSY: new_root or put_old are on the current root file=20
system, or a file system is already mounted on put_old.
Have you tried the form recommended by the manpage?
pivot_root . /tmp
Trond
-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
Trond Myklebust wrote:
> Have you tried the form recommended by the manpage?
> pivot_root . /tmp
yes - same failure
> What does this have to do with NFS?
I am not an NFS expert - just looking for help here ...
Please tell what is the nature of this problem and
how to solve it.
***********************************************************
P? m? , 11/10/2004 klokka 23:19, skreiv Alexander Povolotsky:
> # cd /fadsroot
> #sbin/pivot_root /fadsroot /tmp
> pivot_root: pivot_root: Device or resource busy
What does this have to do with NFS?
man pivot_root.
EBUSY: new_root or put_old are on the current root file
system, or a file system is already mounted on put_old.
Have you tried the form recommended by the manpage?
pivot_root . /tmp
Trond
________________________________________________________________
Speed up your surfing with Juno SpeedBand.
Now includes pop-up blocker!
Only $14.95/ month - visit http://www.juno.com/surf to sign up today!
-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
P=E5 ty , 12/10/2004 klokka 02:05, skreiv Alexander Povolotsky:
> Trond Myklebust wrote:
>=20
> > Have you tried the form recommended by the manpage?
>=20
> > pivot_root . /tmp
>=20
> yes - same failure=20
Sorry. Actually that should be
pivot_root . tmp
'cos neither of the 2 directories may lie on the old root (and you have
to make sure that /fadsroot/tmp does indeed exist).
Cheers,
Trond
-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
Hi Trond !
Trond Myklebust wrote:
>Actually that should be: pivot_root . tmp
>(and you have to make sure that /fadsroot/tmp does indeed exist).
pivot_root . tmp worked ! (no errors).
# ps
PID Uid Stat Command
1 root S init
2 root R [ksoftirqd/0]
3 root S [events/0]
4 root S [khelper]
5 root S [kblockd/0]
6 root S [pdflush]
7 root S [pdflush]
8 root S [kswapd0]
9 root S [aio/0]
15 root S /usr/sbin/xinetd -stayalive -reuse -pidfile /tmp/xinetd.pid
138 root S [rpciod]
253 root S -sh
254 root S /bin/sh /bin/application
256 root S sleep 300
258 root R ps
# mkdir /fadsroot
# mount -o mountvers=2 -onolock 192.168.0.4:/fadsroot /fadsroot
nfs warning: mount version older than kernel
# cd fadsroot
# ls -l
-rw-r--r-- 1 0 0 0 Jan 1 1970 XXX
drwxr-xr-x 3 0 0 4096 Oct 7 2004 apache2
drwxr-xr-x 3 0 0 4096 Oct 7 2004 apt
drwxrwxr-x 2 0 500 4096 Oct 7 2004 bin
drwxr-xr-x 2 0 0 4096 Sep 28 2004 boot
drwxr-xr-x 3 0 0 4096 Aug 16 2004 cardmgr
drwxr-xr-x 2 0 0 4096 Sep 28 2004 cdrom
drwxr-xr-x 3 0 0 4096 Oct 7 2004 cgi-bin
drwxrwxr-x 8 0 500 4096 Sep 29 2004 ctcs-1.3.0
drwxr-xr-x 2 0 0 4096 Oct 12 2004 dev
drwxr-xr-x 2 0 0 4096 Oct 7 2004 dpkg
drwxr-xr-x 41 0 0 4096 Sep 29 2004 etc
-rwxr-xr-x 1 500 500 315 Oct 9 2004 fadsroot.sh
drwxr-xr-x 2 0 0 4096 Sep 28 2004 floppy
drwxrwxr-x 2 0 500 4096 Oct 4 2004 gcc-3.4.1
drwxr-xr-x 2 0 0 4096 Oct 7 2004 gconv
-rwxr-xr-x 1 0 0 493696 Apr 19 2004 gdbserver
-rwxr-xr-x 1 0 0 16711 Jul 2 2004 hello
-rwxr--r-- 1 0 0 281 Jul 2 2004 hello.c
drwxr-xr-x 5 0 0 4096 Apr 19 2004 home
drwxr-xr-x 4 0 0 4096 Sep 29 2004 initrd
-rw-r--r-- 1 500 500 3461120 Sep 29 2004 initrd.tar
drwxr-xr-x 5 0 0 4096 Oct 9 2004 lib
drwxrwxr-x 9 0 500 4096 Sep 27 2004 lmbench-3.0-a4
drwxr-xr-x 2 0 0 4096 Oct 7 2004 locate
drwxrwxr-x 3 0 500 4096 Oct 9 2004 macbench
-rwxr--r-- 1 0 0 22749 Jun 29 2004 main.elf
drwxr-xr-x 2 0 0 4096 Oct 4 2004 mkdir
drwxr-xr-x 4 0 0 4096 Sep 28 2004 mnt
drwxr-xr-x 15 8037 50 4096 Jul 5 2004 ncurses-5.4
drwxr-xr-x 2 0 0 4096 Sep 28 2004 opt
drwxr-xr-x 3 0 0 4096 Aug 16 2004 pciutils-2.1.10
drwxrwxr-x 3 0 500 4096 Oct 4 2004 perl
drwxr-xr-x 2 0 0 4096 Apr 19 2004 proc
crw-r--r-- 1 0 0 2, 0 Apr 19 2004 ptyp0
drwxr-xr-x 3 0 0 4096 Oct 7 2004 python2.3
drwxr-xr-x 2 0 0 4096 Sep 28 2004 root
drwxr-xr-x 6 0 0 4096 Jul 16 2004 runin
drwxr-xr-x 2 0 0 4096 Oct 7 2004 sasl2
drwxr-xr-x 2 0 0 4096 Sep 28 2004 sbin
drwxr-xr-x 3 0 0 4096 Oct 7 2004 ssl
drwxr-xr-x 2 0 0 4096 Sep 28 2004 sys
drwxr-xr-t 2 0 0 4096 Sep 28 2004 tmp
crw-r--r-- 1 0 0 3, 0 Apr 19 2004 ttyp0
drwxr-xr-x 11 0 0 4096 Sep 28 2004 usr
drwxr-xr-x 14 0 0 4096 Sep 28 2004 var
# ls -l | grep tmp
drwxr-xr-t 2 0 0 4096 Sep 28 2004 tmp
# chmod 775 tmp
# pivot_root . tmp
# ls
# pwd
However after that I have the next problem - I am not getting any output from commands (ls, pwd, etc. ) ...
and after a while I am starting to get scrolling error:
root@192:/# Bummer, could not run '/bin/application': No such file or directory
I guess I need to copy /bin/application to /fadsroot/bin/application
before pivot_root ?
Thanks,
Alex
*************
P? ty , 12/10/2004 klokka 02:05, skreiv Alexander Povolotsky:
> Trond Myklebust wrote:
>
> > Have you tried the form recommended by the manpage?
>
> > pivot_root . /tmp
>
> yes - same failure
Sorry. Actually that should be
pivot_root . tmp
'cos neither of the 2 directories may lie on the old root (and you have
to make sure that /fadsroot/tmp does indeed exist).
Cheers,
Trond
________________________________________________________________
Speed up your surfing with Juno SpeedBand.
Now includes pop-up blocker!
Only $14.95/ month - visit http://www.juno.com/surf to sign up today!
-------------------------------------------------------
This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
Use IT products in your business? Tell us what you think of them. Give us
Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
http://productguide.itmanagersjournal.com/guidepromo.tmpl
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs