Bug#605957: lvm2: Every even attempt "pvmove" fails

[Andrew Shirrayev]

Look for compare #605957 and #529876...

:start

At first time pvmove create /dev/mapper/mir1a-pvmove0, change metadata.
move data, and not remove /dev/mapper/mir1a-pvmove0.

At second time pvmove -- fail, change metadata. but not move realdata
and remove /dev/mapper/mir1a-pvmove0...

GOTO start

2010/12/5 Andrew Shirrayev <andrews239 at gmail.com>

> At first time i move 300Gb mail storage to new disk, and lost all data. :-(
> Transfer complite at 300Gb/sec speed...
>
> Kernel logs:
>
> omega:~# ls -l /dev/mapper/ | grep move
> omega:~# dmesg | tail -2
> [11762.790363] drbd5: peer( Secondary -> Primary )
> [11764.552933] drbd2: peer( Secondary -> Primary )
> omega:~# pvmove -n tmptmp1  /dev/sda2 /dev/sdb1
>   /dev/sda2: Moved: 48.0%
>   /dev/sda2: Moved: 83.6%
>
>   /dev/sda2: Moved: 100.0%
> omega:~# ls -l /dev/mapper/ | grep move
> brw-rw---- 1 root disk 254, 17 2010-12-05 17:28 mir1a-pvmove0
> omega:~# dmesg | tail -2
> [11762.790363] drbd5: peer( Secondary -> Primary )
> [11764.552933] drbd2: peer( Secondary -> Primary )
> omega:~# pvmove -n tmptmp1  /dev/sdb1 /dev/sda2
>   device-mapper: create ioctl failed: Device or resource busy
>   device-mapper: reload ioctl failed: Invalid argument
>   WARNING: dev_open(/dev/sdb1) called while suspended
>   WARNING: dev_open(/dev/sda2) called while suspended
>   WARNING: dev_open(/dev/sdb1) called while suspended
>   WARNING: dev_open(/dev/sda2) called while suspended
>   WARNING: dev_open(/dev/sdb1) called while suspended
>   WARNING: dev_open(/dev/sda2) called while suspended
>   /dev/sdb1: Moved: 100.0%
>   device-mapper: create ioctl failed: Device or resource busy
>   Unable to reactivate logical volume "pvmove0"
> omega:~# ls -l /dev/mapper/ | grep move
> omega:~# dmesg | tail -4
> [11762.790363] drbd5: peer( Secondary -> Primary )
> [11764.552933] drbd2: peer( Secondary -> Primary )
> [35829.622520] device-mapper: table: 254:16: linear: dm-linear: Device
> lookup failed
> [35829.622520] device-mapper: ioctl: error adding target to table
>
>
> 2010/12/5 Bastian Blank <waldi at debian.org>
>
> severity 605957 important
>> thanks
>>
>> On Sun, Dec 05, 2010 at 05:11:19AM +0300, Andrew Shirayev wrote:
>> > Justification: causes serious data loss
>>
>> The log does not show any indication that there is actually some data
>> lost.
>>
>> > ======   Short description
>>
>> I miss a description.
>>
>> > omega:~# pvmove -n tmptmp1 /dev/sdb1 /dev/sda2
>> >   device-mapper: create ioctl failed: Device or resource busy
>> >   device-mapper: reload ioctl failed: Invalid argument
>>
>> The kernel log will shows the reason. No need to speculate here.
>>
>> Bastian
>>
>> --
>> History tends to exaggerate.
>>                -- Col. Green, "The Savage Curtain", stardate 5906.4
>>
>
>
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