On Fri, Apr 8, 2011 at 12:19 AM, Achilleas Mantzios <achill@xxxxxxxxxxxxxxxxxxxxx> wrote: > Στις Friday 08 April 2011 08:55:51 ο/η Ireneusz Pluta έγραψε: >> Achilleas Mantzios wrote: >> > >> > In anyway, having FreeBSD to fsck, (background or not) should not happen. And the problem >> > becomes bigger when cheap SATA drives will cheat about their write cache being flushed to the disk. >> > So in the common case with cheap hardware, it is wise to have a UPS connected and being monitored >> > by the system. >> > >> >> It's not lack of UPS. Power issues are taken care of here. It's a buggy 3ware controller which hangs >> the machine ocassionally and the only way to have it come back is to power cycle, hard reset is not >> enough. > > What has happened to me (as Greg mentioned) is that repeatedly interrupted background fscks (having the system > crash while background fsck was executing) might result in a seriously damaged fs. > Add to this, the possible overhead by rebuilding software raid (gmirror) at the same time, > and the situation becomes more complicated. > > So its better to replace/fix/remove this buggy controller, before anything else. If I may ask, how often does it crash? And have you tried updating the firmware of the controller and / or the driver in the OS? -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
