2002-09-14 16:11:35

by Dieter Ferdinand

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Subject: PROBLEM: nfs mount hangs, program is dead an i can't umount or kill the program

hello,
i have big problem with my nfs-mounts.

sometimes, the nfs-mount is stalled an i can only reaktivate it, when i umount and
mount it again.

when a program is accessing this mount, and i can't kill it,i must reboot the pc.

the most time, i have this problem with this pc's:
the server is a p3-550 :
Linux linux-p3 2.2.20 #20 SMP Mon Apr 29 18:17:06 CEST 2002 i686 unknown

the client is a p2-350 dual-system:
Linux p2-350 2.4.18-SMP #1 SMP Sat Jul 20 01:52:33 CEST 2002 i686 unknown

i have the problem with stalled nfs-mounts also on a 486dx66:
Linux 486dx 2.2.19 #1 Sun Apr 21 10:39:32 CEST 2002 i486 unknown

the network have no problems, the problem comes from the nfs-connection.

when i only have a chance to kill the hanging processed and the stalled mount, i can
reaktivate it, without reboot.
but the mount is busy by the hanging program and i can't kill the program, because
the nfs is stalled and i can't umount the nfs, because it is busy by the program.

there is not posibility to break this ring, also i reboot the pc.

goodby
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2002-09-16 06:43:41

by Denis Vlasenko

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Subject: Re: PROBLEM: nfs mount hangs, program is dead an i can't umount or kill the program

On 31 December 1969 22:00, Dieter Ferdinand wrote:
> hello,
> i have big problem with my nfs-mounts.
>
> sometimes, the nfs-mount is stalled an i can only reaktivate it, when i
> umount and mount it again.
>
> when a program is accessing this mount, and i can't kill it,i must reboot
> the pc.

How do you mount it? What mount options? I suspect hard,nointr?
Please read mount manpage, post your kernel log and .config.
--
vda