On Thu, 7 Aug 2003 00:13:06 +0100 (BST),
Gordon Henderson <gordon@xxxxxxxxxx> wrote:
>Maybe my original email was unclear, but this is an NFS server, not a
>client. Why would an NFS exported filesystem hang xfsdump? (or even du -k
>?)
>ie.
>
> 1149 ? D 2:21 xfsdump -F -J -l 1 - /dev/md4
>
>This xfsdump is trying to dump /dev/md4 which is obviously local to the
>server and it's stuck. Why is it stuck?
From your original mail:
>> 9275 ? D 2:02 du -k
>> 10103 ? D 2:26 /usr/bin/find / ( -fstype NFS -o -fstype nfs -o
>> 21671 ? D 1:28 /usr/bin/rsync -a --delete -H -x . >>
>> /mounts/local0.yesterday/
>> 13976 ? D 1:16 du -k
>> 14776 ? D 1:59 /usr/bin/find / ( -fstype NFS -o -fstype nfs -o
All operations that require filesystem locks. They are queued up
behind some task that has grabbed a filesystem lock and is hung, IOW
these tasks are innocent victims of the real problem. 99.9%
probability that the real problem is a hung NFS event.
If you have kdb installed and active, drop into kdb and
set LOGGING 1
bta RD
go
The trace will show what the hung tasks are waiting on.
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