linux-ext4 - Re: Online resize issue with 3.13.5 & 3.15.6

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Message-ID: <53D320F6.40809@fnarfbargle.com>
Date:	Sat, 26 Jul 2014 11:31:02 +0800
From:	Brad Campbell <lists2009@...rfbargle.com>
To:	Theodore Ts'o <tytso@....edu>
CC:	Azat Khuzhin <a3at.mail@...il.com>, linux-ext4@...r.kernel.org
Subject: Re: Online resize issue with 3.13.5 & 3.15.6

On 25/07/14 22:07, Theodore Ts'o wrote:
> On Fri, Jul 25, 2014 at 07:44:07PM +0800, Brad Campbell wrote:
>>
>> Appreciate you taking a look at this and I see where you are going with it.
>
> This patch looks good to me.  If you could give it a try, I would
> appreciate it.
>
> This looks like the same bug which was reported in Ubuntu:
>
> https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1321958

The patch would not apply automatically to 1.42.11 but was easy enough 
to apply by hand.

root@srv:~/src/e2fsprogs/e2fsprogs-1.42.11/resize# ./resize2fs -d 255 
/dev/md0
resize2fs 1.42.11 (09-Jul-2014)
fs has 4007207 inodes, 1957 groups required.
fs requires 4374122900 data blocks.
With 1957 group(s), we have 63820826 blocks available.
Added 131540 extra group(s), blks_needed 4374122900, data_blocks 
4356990326, last_start 4356599580
Added 523 extra group(s), blks_needed 4374122900, data_blocks 
4374059350, last_start 4373440788
Added 2 extra group(s), blks_needed 4374122900, data_blocks 4374124886, 
last_start 4373473426
Last group's overhead is 1430
Need 649474 data blocks in last group
Final size of last group is 650904
Estimated blocks needed: 4391437088
Extents safety margin: 2826959
Filesystem at /dev/md0 is mounted on /server; on-line resizing required
old_desc_blocks = 2768, new_desc_blocks = 2795
./resize2fs: Invalid argument While checking for on-line resizing support

[489412.650430] EXT4-fs (md0): resizing filesystem from 5804916736 to 
5860149888 blocks
[489412.700282] EXT4-fs warning (device md0): verify_reserved_gdb:713: 
reserved GDT 2769 missing grp 177147 (5804755665)
[489412.739676] EXT4-fs (md0): resized filesystem to 5860149888
[489413.215230] EXT4-fs warning (device md0): ext4_group_extend:1720: 
can't shrink FS - resize aborted

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