On Jul 10, 2010, at 12:53 PM, Roy Sigurd Karlsbakk wrote: > Hi all > > I've been reading a lot of messages on this list about potential and actual > corruption of a zpool due to cache flush problems and whatnot, and I find > myself amazed.
Why are you amazed? Storage devices have been losing data since they were invented :-P > I just wonder how a zpool compares with a good old filesystem when it comes > to filesystem errors. It seems several of the members of this list have > encountered problems where they had to boot a live CD to get their pool back, > whereas a normal filesystem won't give this problem. The old-time filesystem > might have corrupted data, but it still gets up. Depends on the failure mode. I've spent hundreds (thousands?) of hours attempting to recover data from backup tape because of bad hardware, firmware, and file systems. The major difference is that ZFS cares that the data is not correct, while older file systems did not care about the data. [no, fsck does not correct data errors] > Can someone give me some good input on this, and perhaps how to avoid an > enitre pool to become unavailable? Use good quality hardware and redundancy. > PS: I'm using small RAIDz2 pools with sufficient amount of redundancy Good. -- richard -- Richard Elling rich...@nexenta.com +1-760-896-4422 ZFS and NexentaStor training, Rotterdam, July 13-15, 2010 http://nexenta-rotterdam.eventbrite.com/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
