From: Jiri Slaby <jirislaby@gmail.com>
To: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
adilger@sun.com, linux-ext4@vger.kernel.org,
Linux kernel mailing list <linux-kernel@vger.kernel.org>,
mszeredi@suse.cz, Eric Paris <eparis@redhat.com>
Subject: Re: busy inodes -> ext3 umount crash
Date: Wed, 21 Apr 2010 17:16:30 +0200 [thread overview]
Message-ID: <4BCF16CE.2080403@gmail.com> (raw)
In-Reply-To: <20100420152844.GB3885@quack.suse.cz>
On 04/20/2010 05:28 PM, Jan Kara wrote:
> On Tue 20-04-10 16:12:03, Jiri Slaby wrote:
>> On 04/19/2010 04:33 PM, Jiri Slaby wrote:
>>> The trigger for busy inodes is as simple as (I=initialization done only
>>> once):
>>> I> # dd if=/dev/zero of=/dev/shm/ext3 bs=1024 count=1 seek=$((100*1024))
>>> I> # mkfs.ext3 -m 0 /dev/shm/ext3
>>> # mount -oloop /dev/shm/ext3 /mnt/c
>>> # umount /mnt/c
>>> # dmesg|tail
>>> VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds.
>>> Have a nice day...
>>>
>>> (The printk time varies -- this sequence really suffices.)
>>
>> Well, this happens only after gnome-session is started and it's fuzzy --
>> sometimes it happens, sometimes not. I didn't find 100% trigger yet.
> Hmph - maybe something in inotify? Dunno...
fsnotify...
>>>> So if you can easily reproduce
>>>> the "busy inodes" message then I'd start with debugging that one. Do you
>>>> see it also with vanilla kernels?
>>
>> Vanilla seems not to be affected. It's in next/master already though
>> (2603ecd9). I'll investigate it further later.
> Do you mean it's in today's linux-next but not in Linus' tree?
Yes, exactly.
And the winner is (seemingly):
commit 69c1182c4e5d8b7da772ddad512c6f6b67ec1bb8
Author: Eric Paris <eparis@redhat.com>
Date: Thu Dec 17 21:24:27 2009 -0500
fsnotify: vfsmount marks generic functions
Much like inode-mark.c has all of the code dealing with marks on inodes
this patch adds a vfsmount-mark.c which has similar code but is intended
for marks on vfsmounts.
Signed-off-by: Eric Paris <eparis@redhat.com>
I can't verify it by reverting on the top of -mm as it doesn't revert
cleanly. Do you see any bug in there?
thanks,
--
js
next prev parent reply other threads:[~2010-04-21 15:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-16 18:09 busy inodes -> ext3 umount crash Jiri Slaby
2010-04-19 14:11 ` Jan Kara
2010-04-19 14:33 ` Jiri Slaby
2010-04-20 14:12 ` Jiri Slaby
2010-04-20 15:28 ` Jan Kara
2010-04-21 15:16 ` Jiri Slaby [this message]
2010-04-21 15:24 ` Eric Paris
2010-04-21 15:47 ` Jiri Slaby
2010-04-21 16:00 ` Eric Paris
2010-04-21 21:25 ` Eric Paris
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