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    SubjectRe: 2.6.24-rc3-git4 NFS crossmnt regression
    On Dec 7, 2007 7:02 AM, Andrew Morton <akpm@linux-foundation.org> wrote:
    ...
    > > 2.6.24-rc3-git1 is last known good kernel. The problem also exists
    > > with the latest snap 2.6.24-rc4-git4. NFS server is 2.6.23-rc9 and
    > > is unchanged.
    >
    > hm, there have been no nfs changes since 2.6.24-rc4.

    Ok, but the problem seems to have appeared before 2.6.24-rc4.

    > > It is easily reproducible here, hopefully for the person who
    > > knows how to debug it too :)
    > >
    >
    > I guess a full set of the commands which you typed to reproduce this would
    > help.

    Server is 2.6.23-rc9 and is exporting:

    /dirA/dirB
    10.10.20.0/255.255.255.0(rw,async,no_root_squash,no_subtree_check,insecure,crossmnt)
    /dirA/dirB/dirC
    10.10.20.0/255.255.255.0(rw,async,no_root_squash,no_subtree_check,insecure)
    /dirA/dirB/dirD
    10.10.20.0/255.255.255.0(rw,async,no_root_squash,no_subtree_check,insecure)

    The NFS client (Core2 SMP) 2.6.24-rc3-git4:

    NFS-server:/dirA/dirB /dirA/dirB nfs
    auto,rsize=16384,wsize=16384,hard,intr,users,exec,nfsvers=3,tcp,nolock,actimeo=0

    Then on the client when the new kernel has booted:

    ls /dirA/dirB --> normal listing
    ls /dirA/dirB/dirC --> Stale NFS file handle
    ls /dirA/dirB/dirD --> Stale NFS file handle

    I will do a few more builds/boots and check -rc3-git2 and -rc3-git3.

    Will report back shortly,

    Shane


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