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SubjectRe: [BUG] symlink problem with knfsd and reiserfs
Trond Myklebust writes:
> >>>>> " " == Hans-Peter Jansen <hpj@urpla.net> writes:
>
> > In syslog, this message appears: Jan 15 00:21:03 elfe kernel:
> > nfs_refresh_inode: inode 50066 mode changed, 0100664 to 0120777
>
> The error is basically telling you that ReiserFS filehandles are being
> reused by the server. Doesn't Reiser provide a generation count to
> guard against this sort of thing?

Yes, inode->i_generation is stored in the file handle:
fs/reiserfs/inode.c:reiserfs_dentry_to_fh().

Hans-Peter, what version of NFS are you using and have you remounted
clients after upgrading to the newer kernel?

>
> My 'fix' just solves the immediate problem of the wrong file mode. It
> does not solve the problems of data corruption that can occur when the
> client is incapable of distinguishing the 'old' and 'new' files that
> share the same filehandle.

This requires i_generation overflow (modulo bug in reiserfs).

>
> Cheers,
> Trond

Nikita.
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