On Apr 14, 2010, at 9:56 AM, Jonathan wrote: > I just ran 'iostat -En'. This is what was reported for the drive in question > (all other drives showed 0 errors across the board. > > All drives indicated the "illegal request... predictive failure analysis" > ------------------------------------------------------------------------------ > c7t1d0 Soft Errors: 0 Hard Errors: 36 Transport Errors: 0 > Vendor: ATA Product: SAMSUNG HD203WI Revision: 0002 Serial No: > Size: 2000.40GB <2000398934016 bytes> > Media Error: 36 Device Not Ready: 0 No Device: 0 Recoverable: 0 > Illegal Request: 126 Predictive Failure Analysis: 0 > ------------------------------------------------------------------------------
Don't worry about illegal requests, they are not permanent. Do worry about media errors. Though this is the most common HDD error, it is also the cause of data loss. Fortunately, ZFS detected this and repaired it for you. Other file systems may not be so gracious. -- richard ZFS storage and performance consulting at http://www.RichardElling.com ZFS training on deduplication, NexentaStor, and NAS performance Las Vegas, April 29-30, 2010 http://nexenta-vegas.eventbrite.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
