2001-02-07 16:33:47

by Jean-Eric Cuendet

[permalink] [raw]
Subject: Lock in with 2.4.1 and NFS


Hi,
I have a strange problem on one of our server.
I have 2.4.1 patched with ACLs 0.7.5 (from acl.bestbits.at) and some RAID +
LVM volumes.
At regular interval, NFS stops working (nfsd stops) and a stop/start of the
NFS service doesn't work.
The NFS service stop blocks in "exportfs -auv" when trying to unmount a
client working apparently well. One time
it was a solaris 2.6 client, another time it was a linux 2.4 machine.
Any help appreciated.
Thanks
-jec

PS: I'm not in the kernel list. Please CC


_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Jean-Eric Cuendet
Linkvest SA
Av des Baumettes 19, 1020 Renens Switzerland
Tel +41 21 632 9043 Fax +41 21 632 9090
http://www.linkvest.com E-mail: [email protected]
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _




2001-02-07 22:13:28

by NeilBrown

[permalink] [raw]
Subject: Re: Lock in with 2.4.1 and NFS

On Wednesday February 7, [email protected] wrote:
>
> Hi,
> I have a strange problem on one of our server.
> I have 2.4.1 patched with ACLs 0.7.5 (from acl.bestbits.at) and some RAID +
> LVM volumes.
> At regular interval, NFS stops working (nfsd stops) and a stop/start of the
> NFS service doesn't work.
> The NFS service stop blocks in "exportfs -auv" when trying to unmount a
> client working apparently well. One time
> it was a solaris 2.6 client, another time it was a linux 2.4 machine.
> Any help appreciated.
> Thanks
> -jec
>
> PS: I'm not in the kernel list. Please CC
>

This scenario sounds a lot like one of the nfsd threads has oopsed
while holding a readlock on the export table, and so exportfs cannot
get a write lock.

Could you check your kernel logs for an Oops message?

NeilBrown


>
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> Jean-Eric Cuendet
> Linkvest SA
> Av des Baumettes 19, 1020 Renens Switzerland
> Tel +41 21 632 9043 Fax +41 21 632 9090
> http://www.linkvest.com E-mail: [email protected]
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
>
>
>
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