Hi, I was running a btrfs raid with 6 disks, metadata: dup and data: raid 6
Two of the disks started behaving oddly: [436823.570296] sd 3:1:0:4: [sdf] Unaligned partial completion (resid=244, sector_sz=512) [436823.578604] sd 3:1:0:4: [sdf] Unaligned partial completion (resid=52, sector_sz=512) [436823.617593] sd 3:1:0:4: [sdf] Unaligned partial completion (resid=56, sector_sz=512) [436823.617771] sd 3:1:0:4: [sdf] Unaligned partial completion (resid=222, sector_sz=512) [436823.618386] sd 3:1:0:4: [sdf] Unaligned partial completion (resid=246, sector_sz=512) [436823.618463] sd 3:1:0:4: [sdf] Unaligned partial completion (resid=56, sector_sz=512) [436977.701944] scsi_io_completion: 68 callbacks suppressed [436977.701973] sd 3:1:0:4: [sdf] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [436977.701982] sd 3:1:0:4: [sdf] tag#0 Sense Key : Hardware Error [current] [436977.701991] sd 3:1:0:4: [sdf] tag#0 Add. Sense: Logical unit failure [436977.702000] sd 3:1:0:4: [sdf] tag#0 CDB: Read(10) 28 00 02 fb fb 80 00 00 28 00 [436977.702005] print_req_error: 68 callbacks suppressed [436977.702010] print_req_error: critical target error, dev sdf, sector 50068352 [498132.144319] print_req_error: 450 callbacks suppressed [498132.144324] print_req_error: critical target error, dev sdf, sector 41777640 [498132.144590] btrfs_dev_stat_print_on_error: 540 callbacks suppressed [498132.144600] BTRFS error (device sdb1): bdev /dev/sdf1 errs: wr 632, rd 1526, flush 0, corrupt 0, gen 0 Eventually the filesystem becomes read-only and everything is odd... Trying to run btrfs check on the disks results in: btrfs check -b /dev/disk/by-uuid/8d431da9-dad4-481c-a5ad-5e6844f31da0 bytenr mismatch, want=912228352, have=0 Couldn't read tree root ERROR: cannot open file system (For backup and normal) So even if the data is duplicated on all disks, something in the above errors seemed to cause it to abort (These disks are seagate sshd disks, never ever buying them again) -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
