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Re: utimensat fails to update ctime

To: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
Subject: Re: utimensat fails to update ctime
From: Eric Blake <ebb9@xxxxxxx>
Date: Mon, 21 Dec 2009 21:37:24 -0700
Cc: Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, Christoph Hellwig <hch@xxxxxx>
In-reply-to: <87hbrkjrk8.fsf@xxxxxxxxxxxxxxxxxxx>
References: <4B2B156D.9040604@xxxxxxx> <87aaxclr4q.fsf@xxxxxxxxxxxxxxxxxxx> <4B2F7421.10005@xxxxxxx> <4B2F7A95.3010708@xxxxxxx> <87hbrkjrk8.fsf@xxxxxxxxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20090812 Thunderbird/ Mnenhy/
According to OGAWA Hirofumi on 12/21/2009 8:05 AM:
>> It may also be file-system dependent.  On the machine where I saw the
>> original failure:
>>> $ uname -a
>>> Linux fencepost 2.6.26-2-xen-amd64 #1 SMP Thu Nov 5 04:27:12 UTC 2009
>>> x86_64 GNU/Linux
>> $ df -T .
>> Filesystem    Type   1K-blocks      Used Available Use% Mounted on
>> /dev/sdb1      xfs   419299328 269018656 150280672  65% /srv/data
> Thanks.
> This is good point. This would be xfs issue or design. xfs seems to have
> own special handling of ctime.

Here's another report, this time about an mtime update not happening on
ntfs-3g.  http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/19336

Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@xxxxxxx

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