From: Li Zefan <lizf@cn.fujitsu.com>
To: idank <idank@tonian.com>
Cc: linux-btrfs@vger.kernel.org,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: btrfs truncate() does not change inode times
Date: Fri, 06 Jan 2012 11:32:13 +0800 [thread overview]
Message-ID: <4F066B3D.6000402@cn.fujitsu.com> (raw)
In-Reply-To: <4F05A821.8090202@tonian.com>
idank wrote:
> Hi all,
> I was running fstest (http://www.tuxera.com/community/posix-test-suite/) on btrfs. Only one test failed, and I believe it to be a bug in btrfs. The scenario is as follows:
> * crate a file.
> * note its times with stat.
> * sleep a few seconds
> * call truncate() on the file (not ftruncate(). ftruncate() works).
> * sync
> * note the file's times again with stat.
> expected result: ctime and mtime are greater.
> actual result: ctime and mtime remain unchanged.
>
> Example:
I followed your example, but got the expected result:
[root@lizf pjd-fstest-20090130-RC]# stat ctime_test
File: "ctime_test"
Size: 0 Blocks: 0 IO Block: 4096 普通空文件
Device: 1bh/27d Inode: 1589980 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2012-01-06 10:27:53.900570365 +0800
Modify: 2012-01-06 10:27:53.900570365 +0800
Change: 2012-01-06 10:27:53.900570365 +0800
[root@lizf pjd-fstest-20090130-RC]# ./fstest truncate ctime_test 200
0
[root@lizf pjd-fstest-20090130-RC]# sleep 2
[root@lizf pjd-fstest-20090130-RC]# stat ctime_test
File: "ctime_test"
Size: 200 Blocks: 0 IO Block: 4096 普通文件
Device: 1bh/27d Inode: 1589980 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2012-01-06 10:27:53.900570365 +0800
Modify: 2012-01-06 10:28:12.238569720 +0800
Change: 2012-01-06 10:28:12.238569720 +0800
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prev parent reply other threads:[~2012-01-06 3:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-05 13:39 btrfs truncate() does not change inode times idank
2012-01-06 3:32 ` Li Zefan [this message]
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