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[Bug 15906] serious performance regression in "umount" on ext4 over LVM

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From: bugzilla-daemon
Subject: [Bug 15906] serious performance regression in "umount" on ext4 over LVM
Date: Tuesday, May 4, 2010 - 1:52 pm

https://bugzilla.kernel.org/show_bug.cgi?id=15906





--- Comment #3 from Kees Cook <kees@outflux.net>  2010-05-04 20:52:46 ---
As an interesting oddity, creating an ext3 filesystem, but then attempting to
mount it as ext4 shows the same pathological behavior.  Mounting as ext3, it's
fine again.

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Messages in current thread:
[Bug 15906] New: serious performance regression in &quot;umount ..., bugzilla-daemon, (Tue May 4, 1:36 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 1:37 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 1:41 pm)
[Bug 15906] serious performance regression in "umount" on ..., bugzilla-daemon, (Tue May 4, 1:52 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 2:05 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 2:11 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 2:12 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 2:34 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 2:48 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 5:28 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 8:18 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 9:00 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Tue May 4, 9:46 pm)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Wed May 5, 12:28 am)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Wed May 5, 12:30 am)
Re: [Bug 15906] serious performance regression in &quot;umount&quot; ..., Dmitry Monakhov, (Wed May 5, 1:27 am)
Re: [Bug 15906] serious performance regression in &quot;umount&quot; ..., Jens Axboe, (Wed May 5, 1:40 am)
Re: [Bug 15906] serious performance regression in &quot;umount&quot; ..., Dmitry Monakhov, (Wed May 5, 2:06 am)
[Bug 15906] serious performance regression in &quot;umount&quot; on ..., bugzilla-daemon, (Wed May 5, 12:44 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 5, 1:34 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 5, 1:34 pm)
Re: [Bug 15906] performance regression in &quot;umount&quot; of file ..., Greg Freemyer, (Wed May 5, 2:36 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 5, 2:36 pm)
Re: [Bug 15906] performance regression in &quot;umount&quot; of file ..., Greg Freemyer, (Wed May 5, 2:55 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 5, 8:49 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Thu May 6, 12:09 am)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Thu May 6, 12:10 am)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Fri May 7, 2:47 am)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Sat May 8, 7:30 am)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Sun May 16, 8:28 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Sun May 16, 8:44 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Mon May 17, 3:52 am)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 19, 11:57 am)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 19, 12:12 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Thu May 20, 6:05 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Thu May 20, 7:07 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Thu May 20, 11:08 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Fri May 21, 9:38 pm)
[Bug 15906] performance regression in &quot;umount&quot; of filesyst ..., bugzilla-daemon, (Wed May 26, 9:44 am)