On 2009-07-31T14:40:23, Allan Wind wrote: > On 2009-07-29T17:04:27, Robert Hancock wrote: > > On 07/29/2009 02:07 PM, Allan Wind wrote: > >> On 2009-07-29T13:43:06, Robert Hancock wrote: > >>> On 07/27/2009 12:03 AM, Allan Wind wrote: > >>>> I have a pair of Western Digital RE4-GP (WD2002FYPS) in RAID1 configuration > >>>> using Linux 2.6.30.3 and seeing the following: > >>>> > >>>> [ 4907.485324] end_request: I/O error, dev sdb, sector 3907028974 > >>> Are there no error messages before this point? Can you post the full > >>> dmesg output from bootup? > >> > >> Thanks for looking into this, Robert. I do not see any relevant error > >> message before this point, but made the entire 82k dmesg available here: > >> http://lifeintegrity.com/~allan/dmesg > > > > It seems like some request failed but apparently that mptsas driver > > isn't dumping out what happened for some reason. There are some of those > > "recovered error" indications but they're not near the I/O error report, > > so I'm not sure what's going on. CCing linux-scsi. > > Is there any data I can help with to advance this issue? The above complains about sector 3907028974 which is exactly 19566 sectors greater than the size of the raid array according to parted. In other words it appears to be an access to the last sector of the array. Number Start End Size File system Name Flags 1 34s 19565s 19532s bios_grub 2 19566s 3907029134s 3907009569s ext3 raid Model: ATA WDC WD2002FYPS-0 (scsi) Disk /dev/sdb: 3907029168s Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 34s 19565s 19532s bios_grub 2 19566s 3907029134s 3907009569s ext3 raid Model: Unknown (unknown) Disk /dev/md0: 3907009408s Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0s 3907009407s 3907009408s ext3 # mdadm --detail /dev/md0 /dev/md0: Version : 0.90 Creation Time : Tue Jul 21 00:06:07 2009 Raid Level : raid1 Array Size : 1953504704 (1863.01 GiB 2000.39 GB) Used Dev Size : 1953504704 (1863.01 GiB 2000.39 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Mon Aug 3 00:59:07 2009 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : fdc1a639:0e6cf1a1:14ef9d30:0388f34d Events : 0.59706 Number Major Minor RaidDevice State 0 8 2 0 active sync /dev/sda2 1 8 18 1 active sync /dev/sdb2 Disabled NCQ did not work around this issue. /Allan -- Allan Wind Life Integrity, LLC <http://lifeintegrity.com> -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
