[Users] Ploop conversion (Error in tune_fs - can't set reserved blocks)
Corrado Fiore
lists at corradofiore.it
Fri Aug 22 07:10:59 PDT 2014
Hi Kir,
thanks for your response. Out of curiosity, is Ploop 1.12.1 going to be released soon in the OpenVZ Yum repo?
Thanks,
Corrado
_______________________________________
On 13/08/2014, at 6:03 AM, Kir Kolyshkin wrote:
> In fact, this is caused by a stupid bug in ploop 1.12 (and older kernel).
>
> To workaround, install a new kernel (042stab092.x).
>
> Fixed in git:
> http://git.openvz.org/?p=ploop;a=commit;h=7e0365c0f8f
>
> Will appear in ploop > 1.12 (most probably 1.12.1).
>
> Kir
>
> On 08/08/2014 12:12 AM, Corrado Fiore wrote:
>> Dear All,
>>
>> today, during the conversion of a container to Ploop storage, I encountered some issues.
>>
>> My host is a CentOS box (2.6.32-042stab081.3) with the latest ploop and ploop-lib installed (1.12-1). When I issued the usual command `vzctl convert NNN`, the conversion process started but towards the end it printed:
>>
>> Error in tune_fs (fsutils.c:180): Can't set reserved blocks to 668415: Inappropriate ioctl for device
>>
>> I could start the CT and enter it. However, df -h was showing weird values (0 bytes available):
>>
>> # df -h
>> Filesystem Size Used Avail Use% Mounted on
>> /dev/ploop44599p1 52G 1.4G 0 100% /
>> none 512M 4.0K 512M 1% /dev
>> none 512M 0 512M 0% /dev/shm
>>
>> In fact, applications like Nginx believed that there was no space available and refused to write logs for example. But I was able to create a new file with the Nano editor.
>>
>> I tried the following to rectify the situation, without success:
>>
>> 1) `vzctl set NNN --disk MMMG --save`, with various values of MMM
>>
>> 2) deleting the INODES settings from the CT conf file and restarting
>>
>> 3) `tune2fs -m 5 /dev/ploop53231p1`
>>
>> In the end, I decided to just create a new container on a different host machine and transfer all application data from the latest backup (which I did minutes before issuing the conversion).
>>
>> Can you give me any clues about what happened?
>>
>> Thanks,
>> Corrado Fiore
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>
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