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Hi,
It really might be fixed in recent code, just for consistency:
dpkg -l | grep mdadm
ii mdadm 3.2.3-2 tool to administer Linux MD arrays
(software RAID)
uname -a
Linux hanna64 3.1.0-1-amd64 #1 SMP Tue Jan 10 05:01:58 UTC 2012 x86_64 GNU/Linux
Cheers,
- -Nik
On 02/16/2012 08:55 AM, NeilBrown wrote:
> On Tue, 14 Feb 2012 11:43:30 +0200 Nikolay Kichukov <hijacker@xxxxxxxxx>
> wrote:
>
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>> Hello Neil,
>> Here is the result, I think I managed to reproduce it as it has converted the raid0 to raid4.
>
>
>> so commands in sequence:
>
>> mdadm --verbose --create /dev/md/mdtest --level=0 --raid-devices=2 --metadata=1.2 /dev/loop0 /dev/loop1
>> mdadm: chunk size defaults to 512K
>> mdadm: array /dev/md/mdtest started.
>
>> strace -o /tmp/foo -f mdadm --grow /dev/md/mdtest --raid-devices=3 --add /dev/loop2
>> mdadm: level of /dev/md/mdtest changed to raid4
>> mdadm: /dev/loop2 not large enough to join array
>> mdadm: Need to backup 3072K of critical section..
>> mdadm: /dev/md/mdtest: Cannot grow - need a spare or backup-file to backup critical section
>> mdadm: aborting level change
>
>
> I tried exactly that and it worked perfectly.
> Maybe the bug has been fixed.
> Please remind me exactly which versions of mdadm and linux you are using.
>
> Thanks,
> NeilBrown
>
>
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