Messages in this thread | | | Date | Sat, 25 Feb 2006 21:16:58 +0000 | From | David Greaves <> | Subject | testing 2.6.14-rc4: unmountable fs after xfs_force_shutdown |
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Hi
Please help.
I was testing 2.6.16-rc4 and seem to have lost my data filesystem :( I know it's called scratch - but my wife went and stored data on there - grrr! Anyway, I'm now in trouble.
I am running XFS over LVM over a 3-disk RAID5.
Something (libata?) caused some bogus read errors (see kernel-ide for details) which threw 2 drives out of my raid array:
sd 0:0:0:0: SCSI error: return code = 0x8000002 sda: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sda, sector 390716735 raid5: Disk failure on sda1, disabling device. Operation continuing on 2 devices ata2: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata2: status=0x51 { DriveReady SeekComplete Error } sd 1:0:0:0: SCSI error: return code = 0x8000002 sdb: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sdb, sector 390716735 raid5: Disk failure on sdb1, disabling device. Operation continuing on 1 devices RAID5 conf printout: --- rd:3 wd:1 fd:2 disk 0, o:1, dev:sdd1 disk 1, o:0, dev:sdb1 disk 2, o:0, dev:sda1 xfs_force_shutdown(dm-0,0x1) called from line 338 of file fs/xfs/xfs_rw.c. Return address = 0xc020c0e9 Filesystem "dm-0": I/O Error Detected. Shutting down filesystem: dm-0 Please umount the filesystem, and rectify the problem(s) I/O error in filesystem ("dm-0") meta-data dev dm-0 block 0x640884a ("xlog_bwrite") error 5 buf count 262144 XFS: failed to locate log tail XFS: log mount/recovery failed: error 5 XFS: log mount failed
After checking with mdadm --examine I was able to reconstruct the array using the 2 booted devices as they both had the same event count: raid5: device sdb1 operational as raid disk 1 raid5: device sda1 operational as raid disk 2 raid5: allocated 3155kB for md1 raid5: raid level 5 set md1 active with 2 out of 3 devices, algorithm 2 RAID5 conf printout: --- rd:3 wd:2 fd:1 disk 1, o:1, dev:sdb1 disk 2, o:1, dev:sda1
I restarted lvm and remounted the drive but it failed like this: XFS mounting filesystem dm-0 ata2: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata2: status=0x51 { DriveReady SeekComplete Error } ata2: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata2: status=0x51 { DriveReady SeekComplete Error } ata2: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata2: status=0x51 { DriveReady SeekComplete Error } ata2: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata2: status=0x51 { DriveReady SeekComplete Error } ata2: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata2: status=0x51 { DriveReady SeekComplete Error } sd 1:0:0:0: SCSI error: return code = 0x8000002 sdb: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sdb, sector 390716735 raid5: Disk failure on sdb1, disabling device. Operation continuing on 1 devices ata1: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for op=0x2a cmd=0x3d status: 0x51 ata1: status=0x51 { DriveReady SeekComplete Error } sd 0:0:0:0: SCSI error: return code = 0x8000002 sda: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sda, sector 390716735 raid5: Disk failure on sda1, disabling device. Operation continuing on 0 devices RAID5 conf printout: --- rd:3 wd:0 fd:3 disk 1, o:0, dev:sdb1 disk 2, o:0, dev:sda1 xfs_force_shutdown(dm-0,0x1) called from line 338 of file fs/xfs/xfs_rw.c. Return address = 0xc020c0e9 Filesystem "dm-0": I/O Error Detected. Shutting down filesystem: dm-0 Please umount the filesystem, and rectify the problem(s) I/O error in filesystem ("dm-0") meta-data dev dm-0 block 0x640884a ("xlog_bwrite") error 5 buf count 262144 XFS: failed to locate log tail XFS: log mount/recovery failed: error 5 XFS: log mount failed
I then then rebooted into 2.6.15 (where it's been happy for weeks and weeks!) raid5: device sdb1 operational as raid disk 1 raid5: device sda1 operational as raid disk 2 raid5: allocated 3155kB for md1 raid5: raid level 5 set md1 active with 2 out of 3 devices, algorithm 2 RAID5 conf printout: --- rd:3 wd:2 fd:1 disk 1, o:1, dev:sdb1 disk 2, o:1, dev:sda1
Setting up LVM Volume Groups... Reading all physical volumes. This may take a while... /dev/hda: open failed: No medium found Found volume group "video_vg" using metadata type lvm2 1 logical volume(s) in volume group "video_vg" now active
haze:~# mount /scratch mount: /dev/video_vg/video_lv: can't read superblock
haze:~# xfs_repair -n /dev/video_vg/video_lv Phase 1 - find and verify superblock... superblock read failed, offset 0, size 524288, ag 0, rval 0
fatal error -- Invalid argument
haze:~# lvdisplay /dev/video_vg/video_lv --- Logical volume --- LV Name /dev/video_vg/video_lv VG Name video_vg LV UUID cg2yc1-dO6V-3GlY-JnhY-4nXi-V85s-WTIFml LV Write Access read/write LV Status available # open 0 LV Size 372.61 GB Current LE 95389 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0
Any sugestions?
David
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