Messages in this thread | | | Date | Tue, 20 Sep 2005 06:11:57 -0600 | From | Andreas Dilger <> | Subject | Re: ctime set by truncate even if NOCMTIME requested |
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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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