On Tue, Nov 22, 2011 at 10:47:24AM -0800, Gregory Farnum wrote: > Barriers on (at least, nobody turned them off); the RAID card is > battery-backed; here are megacli dumps: > http://pastebin.com/yTskgzWG > http://pastebin.com/ekhczycy I had a lot of of issues with megaraid cards and their unsafe caching settings, up to the point that I'd recommend staying away from them now. Can you check in the megacli config if the _disk_ write caches are enabled? megaraid adapters used to do that a lot, and given that the disk cache isn't batter backed it's fairly fatal. I think in your dump this one might be the culprit given that SATA disks outside of a few niches come with a writeback cache policy: Disk Cache Policy: Disk's Default try changing that to an explicit writethrough mode - and maybe try running a crash data integrity test like http://www.complang.tuwien.ac.at/anton/hdtest/ on this controller. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
