On Sep 19, 2005 21:16 -0500, Steve French wrote:
> It does seem like
> utime(filename, timeval)
> may be the only time we want to send time changes to the server but I am
> not certain how risky such an approach is even after scanning fs/open.c
> to ignore time changes except when both ATIME/MTIME/CTIME are set at the
> same time (as they are in sys_utime and do_utimes). Most people
> probably don't care if the server and client clocks are not too far off,
> but it does affect performance (presumably even noticeable on something
> like fsx test)
For Lustre (since we are patching the VFS anyways) we have added an
ATTR_CTIME_SET flag to distinguish whether the client has explicitly
set the ia_ctime field, or if it is an implicit update.
Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.
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