[Users] OVZ 7 beta - ploop backup fully functional?

[Kir Kolyshkin]

On 10/28/2015 06:07 PM, jjs - mainphrame wrote:
> Hi Kir,
>
> Are you sure that's the right list? I don't see any users there, it's 
> all hard core dev, posting patches.

Definitely. Unlike with OpenVZ, where we have users@ and devel@, there's 
only
one mailing list for CRIU, and among the other things it is also used to 
get support.

>
> Before I take the plunge and raise my hand there, I was curious to 
> know if any OVZ 7 user had actually gotten vzctl snapshot to work.
>
> Joe
>
> On Wed, Oct 28, 2015 at 4:17 PM, Kir Kolyshkin <kir at openvz.org 
> <mailto:kir at openvz.org>> wrote:
>
>     On 10/28/2015 02:31 PM, jjs - mainphrame wrote:
>>     Greetings,
>>
>>     I've been running some test containers on OVZ7 beta, and, while I
>>     realize not all functionality is in place yet, they have been so
>>     dependable that I'm starting to depend on them.
>>
>>     So, understandably, I was looking at backups, and my first tries
>>     with vzctl snapshot failed. I don't want to spend a lot of time
>>     troubleshooting something that's not yet known to be working, but
>>     in case it is, has anyone else had better luck?
>>
>>
>>     Here is the result of my attempt to make a backup:
>>
>>     [root at hachi vz]# vzctl snapshot 1001
>>     Creating snapshot {57c8aa0d-1c04-4469-9d1e-c95fab04bd01}
>>     Storing /local/vz/private/1001/Snapshots.xml.tmp
>>     Setting up checkpoint...
>>     Failed to checkpoint the Container
>>     All dump files and logs were saved to
>>     /local/vz/private/1001/dump/{57c8aa0d-1c04-4469-9d1e-c95fab04bd01}.fail
>>     Checkpointing failed
>>     Failed to create snapshot
>>     [root at hachi vz]#
>>
>>
>>     The last few lines of the dump log contain these clues:
>>
>>     (00.570576) Error (proc_parse.c:404): Can't handle non-regular
>>     mapping on 8366's map 7f2164d63000
>>     (00.570582) Error (cr-dump.c:1487): Collect mappings (pid: 8366)
>>     failed with -1
>>     (00.570746) Unlock network
>>     (00.570751) Running network-unlock scripts
>>
>>
>>     There is no pid 8366 in the CT but on the host that pid
>>     corresponds to the mysql instance running in the container that
>>     I'm trying to snapshot:
>>
>>     [root at hachi vz]# ps -ef|grep 8366
>>     27          8366    7098  0 14:03 ?  00:00:00 /usr/libexec/mysqld
>>     --basedir=/usr --datadir=/var/lib/mysql
>>     --plugin-dir=/usr/lib64/mysql/plugin
>>     --log-error=/var/log/mariadb/mariadb.log
>>     --pid-file=/var/run/mariadb/mariadb.pid
>>     --socket=/var/lib/mysql/mysql.sock
>>
>>     So, is this something that ought to work?
>>
>
>     Hi Joe,
>
>     You might want to try writing to criu list with this question,
>     they might have a clue.
>     See https://lists.openvz.org/mailman/listinfo/criu
>
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