Re: stuck nfsd processes with 2.6.24-rc2

On Tue, Nov 13, 2007 at 08:07:55PM +0100, Christian Kujau wrote:
I noticed that I cannot use kernel nfsd any more with 2.6.24-rc2, last
working kernel as of now is 2.6.23.1. First I was using nfsv4 but switching
to nfsv3 did not help either: exported shares can be mounted (client:
2.6-git/powerpc32, nfs-common-1.1.1~git-20070709-3ubuntu1), but running "ls
/mountpoint" (even without "-l") on the client is enough to get the [nfsd]
processes in "D" state.
Restarting the rpc.nfsd process on the does not help much, the new rpc.nfsd
processes get stuck quickly.

For more details please see http://nerdbynature.de/bits/2.6.24-rc2/nfsd/

I haven't seen this particular issue on the list recently, hence my post.
I'll try to git-bisect my way through the changesets, but it'll take some
time...

Could you get a sysrq-T trace? (First get the [nfsd] processes in [D]
state. Then type sysrq-T, or "echo t >/proc/sysrq-trigger". Then
extract the stuff that's dumped to the logs.)

--b.
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