Emmanuel Florac schrieb: > Le Wed, 22 Sep 2010 09:26:53 +0200 vous écriviez: > > > Infortrend RAID with BBU -> DRBD -> LVM -> XFS > > I'm not sure to understand; DRBD is used to mirror devices, are you > using 2 Infortrend arrays, or one split into two volumes? yes, 2 drbd/heartbeat nodes, 2 Infortrend systems > In any case, battery protected write cache shouldn't create any > corruption (OTOH it will enhance performance dramatically). AFAIK all > RAID arrays mirror the drives cache in the array cache until it hits > platters. There may be some "cheating" hard drives (I heard that WD > isn't always totally clear about cache policies) but Seagate and Hitachi > professional grade drives definitely are OK. Hint: don't use desktop > hard drives in any case because they probably cheat about cache > synchronisation. The drives are 15000 RPM SAS drives, so no desktops drives. As far as I understand the documentation, when the "Delayed Drive Write" RAID option is enabled, there is the possibility of data loss. > I see that you may have been running rsync at the time of failure; there > are quite a lot of quite unclear (to me at least) cases of XFS failures > when running rsync to copy large amount of data. I it a fully 64 bits > system? There were many more lines with this error in the logs. Triggered by smbd, rsync, bacula... Ralf _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
