Do you happen to know if the fix can be back ported to 2.4.18/XFS 1.1 ?
Where in the CVS code would I find the fix?
Thanks
James Pearson
Keith Owens wrote:
>
> On Thu, 04 Jul 2002 17:16:06 +0100,
> James Pearson <james-p@xxxxxxxxxxxxxxxxxx> wrote:
> >We have noticed a problem with a couple of our NFS servers (running
> >RedHat 7.2 with a stock 2.4.18 kernel with XFS v1.1) whereby NFS access
> >slows to a crawl or stalls.
> >
> >The exported filesystem(s) are XFS with 8 nfsd's running - when we have
> >the problem the load average is about 8 - but CPU usage, disk access and
> >network traffic are minimal.
> >
> >I found, by accident, that running the command 'sync' appears to 'fix'
> >the situation...
> >
> >I'm not sure if this is an XFS or NFS related problem (hence posting to
> >both lists).
>
> XFS. 2.4.18 would sometimes get into a situation where two XFS
> operations were waiting on locks (not deadlocked) and nothing was
> moving. Performing some other disk activity such as sync would get
> things moving again.
>
> AFAICT this is fixed in the XFS CVS tree, against 2.4.19-rc1.
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