xfs i/O error

Thu Jul 30 17:00:54 CDT 2009

dmesg 
[   18.316753] scsi 8:0:0:0: Direct-Access     WD       10EADS External 
1.75 PQ: 0 ANSI: 4
[   18.317732] sd 8:0:0:0: [sdg] 1953525168 512-byte hardware sectors: (1.00
TB/931 GiB)
[   18.318230] sd 8:0:0:0: [sdg] Write Protect is off
[   18.318233] sd 8:0:0:0: [sdg] Mode Sense: 23 00 00 00
[   18.318236] sd 8:0:0:0: [sdg] Assuming drive cache: write through
[   18.318856] sd 8:0:0:0: [sdg] 1953525168 512-byte hardware sectors: (1.00
TB/931 GiB)
[   18.319354] sd 8:0:0:0: [sdg] Write Protect is off
[   18.319358] sd 8:0:0:0: [sdg] Mode Sense: 23 00 00 00
[   18.319360] sd 8:0:0:0: [sdg] Assuming drive cache: write through
[   18.319364]  sdg: sdg1
[   18.333586] sd 8:0:0:0: [sdg] Attached SCSI disk
[   18.333638] sd 8:0:0:0: Attached scsi generic sg7 type 0

attaches and mounts fine
[   26.111917] XFS mounting filesystem sdg1
[   26.432164] Ending clean XFS mount for filesystem: sdg1

[70273.864305] sd 8:0:0:0: [sdg] Sense Key : Medium Error [current] 
[70273.864314] Info fld=0x0
[70273.864318] sd 8:0:0:0: [sdg] Add. Sense: Unrecovered read error
[70273.864327] end_request: I/O error, dev sdg, sector 378206415
[70276.938405] sd 8:0:0:0: [sdg] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE,SUGGEST_OK

running a defrag that last few hours so there are tonnes of those. Like i
said it has no issues mounting, xfs_repair fails to see the problem. Bad
sectors I hope not the drives are a few months old and this is a storage
server to it isn't like it is getting a tonne of writing done to it. Being
external though I can't rule out hardware failure and smartctl doesn't run
over USB.

Yes it does error on cp or mv. but i'm assuming that those files are in the
sectors that are erroring because the rest were copied cleanly off the
drive. Even corrupted though I can still play the file without errors. In
this case the drive is full of .avi

rnb wrote:
> 
> Running Ubuntu 9.04 kernel 2.26.28.14 generic
> Drive mounts fine.
> xfs_repair shows no errors
> sudo xfs_repair /dev/sdg1
>  Phase 1 - find and verify superblock...
> Phase 2 - using internal log
>         - zero log...
>         - scan filesystem freespace and inode maps...
>         - found root inode chunk
> Phase 3 - for each AG...
>         - scan and clear agi unlinked lists...
>         - process known inodes and perform inode discovery...
>         - agno = 0
>         - agno = 1
>         - agno = 2
>         - agno = 3
>         - process newly discovered inodes...
> Phase 4 - check for duplicate blocks...
>         - setting up duplicate extent list...
>         - check for inodes claiming duplicate blocks...
>         - agno = 0
>         - agno = 1
>         - agno = 2
>         - agno = 3
> Phase 5 - rebuild AG headers and trees...
>         - reset superblock...
> Phase 6 - check inode connectivity...
>         - resetting contents of realtime bitmap and summary inodes
>         - traversing filesystem ...
>         - traversal finished ...
>         - moving disconnected inodes to lost+found ...
> Phase 7 - verify and correct link counts...
> done
> 
> xfs_check did move a few things around but finished fine
> 
> sudo xfs_fsr -v /dev/sdg1 <== This is just so far it is still running.
> /media/Films start inode=0
> ino=140
> bad read of 0 bytes from ino=140: Input/output error
> ino=139
> extents before:66 after:8      ino=139
> ino=145
> extents before:42 after:7      ino=145
> ino=146
> extents before:40 after:8      ino=146
> ino=143
> bad read of 0 bytes from ino=143: Input/output error
> ino=144
> extents before:27 after:8      ino=144
> ino=8763008
> bad read of 0 bytes from ino=8763008: Input/output error
> ino=8763059
> bad read of 0 bytes from ino=8763059: Input/output error
> ino=8763057
> extents before:307 after:12      ino=8763057
> ino=8763058
> extents before:259 after:11      ino=8763058
> ino=8763024
> bad read of 0 bytes from ino=8763024: Input/output error
> ino=8763055
> kk
> extents before:125 after:10      ino=8763055
> ino=8763030
> bad read of 0 bytes from ino=8763030: Input/output error
> ino=8763060
> bad read of 0 bytes from ino=8763060: Input/output error
> ino=8763056
> extents before:62 after:13      ino=8763056
> ino=8763066
> 
> Now my issue is how do I fix it if xfs_repair doesn't see a problem.
> Anything getting copied to the drive works fine in place wasn't until i
> tried to move it off I noticed the issue. Some things copy fine from it
> several others fail. Then i get Input/output error. It is a full 1tb drive
> . WD mybook it lost power which I think is what caused this issue. How can
> I correct the issue. Everything I try takes a hell of a long time and
> doesn't yield a positive result so any suggestions to narrow this down
> would help a lot.. I need to recover the drive as i don't want it
> continuing to cause issues, new files copied to it just as a test IO error
> trying to move them off at least the one I tried did. Being so large I'd
> rather not buy a second drive dd it and format . Hoping xfs_fsr  will mark
> the bad sectors and move what it has to. Just large drives are so bloody
> time consuming.
> 

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