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    SubjectRe: knfsd messages (was: Re: 2.1.103: knfsd dentry problem: x/y not found -- need full search)
    Bill Hawes <> writes:

    > Richard Jones wrote:
    > >
    > > On a related subject, is the following kernel message important:
    > >
    > > nfsd_create: dentry tmp/test not negative!
    > I'm pretty sure I know the cause of that problem -- the current knfsd
    > isn't obeying all of the vfs locking protocols. Under some circumstances
    > it may check for existence, find the file doesn't exist, and then go to
    > create the file and find that it's already been created (that's the
    > "dentry not negative!" part.)


    This is pretty much what I've been seeing. In my earlier report, I
    carelessly missed out the critical first log entry:

    May 29 12:28:10 valour kernel: nfsd_create: dentry docs/ThesisProposal not negative!

    This is followed by:

    May 29 12:28:10 valour kernel: find_fh_dentry: docs/ThesisProposal lookup mismatch!
    May 29 12:28:10 valour kernel: lookup_by_inode: found ThesisProposal
    May 29 12:28:10 valour kernel: lookup_by_inode: docs/ThesisProposal inode mismatch??
    May 29 12:28:10 valour kernel: find_fh_dentry: 03:07, 129025/217178 not found -- need full search!

    These blocks repeat until I ^C the pipeline.

    > Guess I need to find some round tuits and get this fixed ...

    Well, since I can reproduce this bug on demand, I'd be interested in
    testing any patches you feel like coming up with.


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