Il 24/03/2011 10.27, Sami Haahtinen ha scritto: > On Thu, Mar 24, 2011 at 10:49, farmershort > <bacula-fo...@backupcentral.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@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
