Il 24/03/2011 10.27, Sami Haahtinen ha scritto:
> On Thu, Mar 24, 2011 at 10:49, farmershort
> <bacula-forum AT backupcentral DOT com> wrote:
>> however, I had scheduled the first big test of this new bacula system a
>> couple of days ago - and asked it to back up about 350GB from each of 2
>> servers - at the same time. Both of these backups should run concurrently,
>> and back up to the same esata disk.
>>
>> I managed to get this to happen yesterday, by manually running both jobs
>> from bconsole, but for some reason, whenever they run from schedule, then
>> cause the VM to reboot. If you watch it happening, you see the VM go into
>> "saving" mode, then "saved".... then some minutes later it reboots.
>
> I would start by assuming that bacula is only the trigger in the
> situation and start by running stress tests on the virtual machines.
> First for the disks and then for the network (and if you use client
> side compression, on CPU as well).
>
> It's pretty likely that the higher IO loads have caused some driver to
> fail somewhere and that is causing the situation. I'm finding it
> rather unlikely that the cause would be directly related to bacula,
> but everything is possible.
>
> Regards,
For example, VMWare 2 linux guests can have problems with virtual scsi
disks under very high I/O loads (like those triggered by bacula
backups), which cause the root fs to be remounted r/o, thus forcing a
guest reset via vmware console. I've seen this happen mainly when vmware
guest tools are installed. Suggestions on the web are to switch to a
virutal ide controller.
This example just to say that bacula can push virtual systems to their
limits in terms of I/O throughput, thus exposing subtle bugs that are
seen by guest systems as hardware failures.
HTH
------------------------------------------------------------------------------
Enable your software for Intel(R) Active Management Technology to meet the
growing manageability and security demands of your customers. Businesses
are taking advantage of Intel(R) vPro (TM) technology - will your software
be a part of the solution? Download the Intel(R) Manageability Checker
today! http://p.sf.net/sfu/intel-dev2devmar
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users
|
