From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 15910] zero-length files and performance degradation
Date: Thu, 6 May 2010 04:18:59 GMT
Message-ID: <201005060418.o464IxOB012196@demeter.kernel.org>
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Eric Sandeen changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sandeen@redhat.com
--- Comment #3 from Eric Sandeen 2010-05-06 04:18:57 ---
(In reply to comment #2)
> May be it is useful to introduce compat mount option which force fsync()
> internaly inside rename(). Renames is not what frequent operation so it has
> much less performance penalty as real ordered mode.
ext4 does already have allocate-on-rename heuristics, though not exactly
fsync()
if (retval == 0 && force_da_alloc)
ext4_alloc_da_blocks(old_inode);
from
commit 8750c6d5fcbd3342b3d908d157f81d345c5325a7
Author: Theodore Ts'o
Date: Mon Feb 23 23:05:27 2009 -0500
ext4: Automatically allocate delay allocated blocks on rename
still, more mount options doesn't seem to solve the problem to me, in the end
applications can't rely on it...
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