processes stuck in D state
Subsystems (2)
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Hi!
Please take a look at this problem:
[linux-kernel-mailing-list thread]
http://marc.theaimsgroup.com/?t=3D98639966100003&r=3D1&w=3D2
thanks.
Please cc me, as I'm not subscribed to the nfs-list.
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Regards Michael B=FCsch
http://www.8ung.at/tuxsoft
16:28:34 up 20 min, 1 user, load average: 1.07, 0.97, 0.66
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_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
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" " == Michael Buesch <[email protected]> writes:
> Hi! Please take a look at this problem:
> [linux-kernel-mailing-list thread]
> http://marc.theaimsgroup.com/?t=98639966100003&r=1&w=2
If I can hazard a guess: someone is firewalling the lockd port and/or the statd port.
Either mount using the 'nolock' option, or fix the firewall (see the HOWTO and/or FAQ).
Cheers,
Trond
-------------------------------------------------------
Enterprise Linux Forum Conference & Expo, June 4-6, 2003, Santa Clara The only event dedicated to issues related to Linux enterprise solutions www.enterpriselinuxforum.com
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs
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Quoted 11 lines · Trond Myklebust
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" " == Michael Buesch <[email protected]> writes:
> Hi! Please take a look at this problem:
>
> [linux-kernel-mailing-list thread]
> http://marc.theaimsgroup.com/?t=98639966100003&r=1&w=2If I can hazard a guess: someone is firewalling the lockd port and/or the statd port.
Either mount using the 'nolock' option, or fix the firewall (see the HOWTO and/or FAQ).
To reproduce the problem:
- - mount some nfs from a server in your lan.
- - Open an app, that uses the mounted fs. I've simply opened a konqueror-window for the directory where the nfs is mounted.
- - shut down or crash the server or just pull the network-cable.
- - Now the konqueror-process is nonkillable in D state. There's no chance to kill it.
I've tried it with all firewalls disabled, but the problem resists.
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Cheers,
Trond
@linux-kernel-mailing-list: I've posted a thread to nfs-mailing list with the same topic as in lkml. IMHO this is the better list for this problem. :)
- --
Regards Michael Büsch
http://www.8ung.at/tuxsoft
17:34:35 up 1:26, 5 users, load average: 1.52, 1.32, 1.13
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" " == Michael Buesch <[email protected]> writes:
> To reproduce the problem:
> - - mount some nfs from a server in your lan.
> - - Open an app, that uses the mounted fs. I've simply opened a
> konqueror-window for the directory where the nfs is mounted.
> - - shut down or crash the server or just pull the
> network-cable.
> - - Now the konqueror-process is nonkillable in D
> state. There's no
> chance to kill it.
Unless you are using the 'intr' or 'soft' mount flags, then that is *documented and expected* behaviour.
It is true that even when using the 'intr' mount flag, you don't always succeed in killing a task that is hanging on NFS. That is usually due to the fact that it is waiting on some semaphore that is held by another process. semaphores always sleep in the TASK_UNINTERRUPTIBLE state, so they cannot be signalled. Linus has suggested a solution to this problem: to set up a special class of semaphores that are killable with 'SIGKILL', but doing that (and then replacing all those semaphores in the VFS and VM) is not going to happen before 2.7.x. at the earliest.
However, as I've mentioned on this list *many* times before: there exists a workaround if you are wanting to kill all processes in order to unmount the partition:
kill -9 all the processes.
kill -9 rpciod.
Cheers,
Trond
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Quoted 11 lines · Trond Myklebust
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" " == Michael Buesch <[email protected]> writes:
> To reproduce the problem:
> - - mount some nfs from a server in your lan.
> - - Open an app, that uses the mounted fs. I've simply opened a
> konqueror-window for the directory where the nfs is mounted.
> - - shut down or crash the server or just pull the
> network-cable.
> - - Now the konqueror-process is nonkillable in D
> state. There's no
> chance to kill it.
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Unless you are using the 'intr' or 'soft' mount flags, then that is *documented and expected* behaviour.
I'm using intr.
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However, as I've mentioned on this list *many* times before: there exists a workaround if you are wanting to kill all processes in order to unmount the partition:
kill -9 all the processes.
kill -9 rpciod.
kill -9 doesn't work for me to kill the app.
- --
Regards Michael Büsch
http://www.8ung.at/tuxsoft
18:28:55 up 2:20, 5 users, load average: 1.02, 1.06, 1.06
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" " == Michael Buesch <[email protected]> writes:
kill -9 all the processes. kill -9 rpciod.
> kill -9 doesn't work for me to kill the app.
I didn't say kill the app. I said signal it with -9, then signal rpciod.
Cheers,
Trond
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Quoted 7 lines · Trond Myklebust
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" " == Michael Buesch <[email protected]> writes:
kill -9 all the processes. kill -9 rpciod.
> kill -9 doesn't work for me to kill the app.
I didn't say kill the app. I said signal it with -9, then signal rpciod.
Ah, I understand. :)
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Cheers,
Trond
- --
Regards Michael Büsch
http://www.8ung.at/tuxsoft
19:31:20 up 3:22, 2 users, load average: 1.23, 1.09, 1.04
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