linux-ext4 - [Bug 13549] Kernel oops while online resizing of an ext4 filesystem

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Message-Id: <201003222151.o2MLpuWI030555@demeter.kernel.org>
Date:	Mon, 22 Mar 2010 21:51:56 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 13549] Kernel oops while online resizing of an ext4 filesystem

https://bugzilla.kernel.org/show_bug.cgi?id=13549





--- Comment #12 from Eric Sandeen <sandeen@...hat.com>  2010-03-22 21:51:35 ---
I'm afraid I've not been able to reproduce it:

create a sparse loopback filesystem:

[root@...de test]# touch fsfile
[root@...de test]# truncate --size 1020054732800 fsfile 
[root@...de test]# ls -lh fsfile 
-rw-r--r--. 1 root root 950G Mar 22 16:28 fsfile
[root@...de test]# mkfs.ext4 fsfile 
mke2fs 1.41.10 (10-Feb-2009)

<at this point I checked that the filesystem size and features are similar to
your fs>

[root@...de test]# ls -lh fsfile 
-rw-r--r--. 1 root root 950G Mar 22 16:28 fsfile

Grow the container by about 50G:

[root@...de test]# truncate --size 1099511627776 fsfile 
[root@...de test]# ls -lh fsfile 
-rw-r--r--. 1 root root 1.0T Mar 22 16:32 fsfile

Resize while mounted:

[root@...de test]# mount -o loop fsfile  mnt/
[root@...de test]# resize2fs /dev/loop0 
resize2fs 1.41.10 (10-Feb-2009)
Filesystem at /dev/loop0 is mounted on /mnt/test/mnt; on-line resizing required
old desc_blocks = 60, new_desc_blocks = 64
Performing an on-line resize of /dev/loop0 to 268435456 (4k) blocks.
The filesystem on /dev/loop0 is now 268435456 blocks long.

No oops ... so I'm not sure what is going on here.

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