Emmanuel, Am 08.06.2012 12:51, schrieb Emmanuel Florac: > "Christian J. Dietrich" <dietrich@xxxxxxxxxxxxxxxxxxxxxx> écrivait: > >> I am running CentOS 6.2 (=RHEL 6.2) with kernel >> 2.6.32-220.17.1.el6.x86_64 (most recent) and all OS updates installed. >> Controller Firmware is the most recent (18948), driver version is >> 1.1-5. HDDs are 2x WD2001FASS, 10x WD2002FAEX. >> > > I currently manage many servers (about 50) with Adaptec 5xx5 raid > cards. The only case of data corruption I've met was with WD drives. > > Therefore it's most probably related to the WD drives. WD desktop > drives are well known for being (voluntarily) crippled for RAID > operation. They will almost always create all sort of weird problems > when running under high IO load. > > It is of utmost importance that you at least take care of setting TLER > in the correct mode on the drives. Beware that apparently newer WD > drives don't even allow setting TLER properly anymore (I said > "crippled"). > > http://en.wikipedia.org/wiki/Time-Limited_Error_Recovery Indeed, it seems to be related to the WD HDDs, I am in contact with Adaptec support and will dig deeper. A couple of disks have comparably high CommandAborts. Probably, I will rebuild the RAID volume using disks with proper TLER support and activate TLER. Thanks for your help, Chris -- Christian J. Dietrich Institute for Internet Security - if(is) Westfälische Hochschule University of Applied Sciences https://www.internet-sicherheit.de _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
