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Disk corruption 
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captaintrav

Joined: Mon Jun 16, 2008 03:39
Posts: 2
Post Disk corruption
I just lost around 300gb of data on an external USB hard disk. This is the second time I've lost some data on the drive, is this because of the (apparently) old version of NTFS-3g ubuntu is using? The first time was not so bad, just of couple of gb went missing. The scenario is, I make sure to unmount the HD in gnome, right click, unmount, since I try to make sure to cleanly unmount the drive. Next time I try to use it in Linux, gnome doesn't auto mout it.

I run chkdsk from a Windows machine and... I get 1000's of "Deleting orphan file record segment XXXX" type of errors.

It appears the MFT is getting completely screwed...

This last go around, I'm pretty depressed, I'm pretty scared to use this external drive on my Ubuntu 8.04 x64 machine now. Should I scream at Ubuntu?

My ntfs-3g package is 1.2216, which appears to be outdated.
Mon Jun 16, 2008 03:54
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szaka
Tuxera CTO

Joined: Tue Nov 21, 2006 23:15
Posts: 1645
Post 
Yes, it very well can be that not using at least version 1.2506 caused the corruption problem. Though several external disk brands are known to have sometime hardware problems (Seagate FreeDesktop, LaCie, Western Digital MyBook).

NOBODY SHOULD USE EARLIER VERSIONS!!!

There are more info at http://article.gmane.org/gmane.comp.fil ... .devel/536
Mon Jun 16, 2008 03:59
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captaintrav

Joined: Mon Jun 16, 2008 03:39
Posts: 2
Post 
I found some suspicious stuff in the log:

Might be the external drive is just flaky? I've downloaded and compiled the latest stable version, I'll test it with some data I have more than one copy of. :cry:

Code:
Jun 10 22:47:41 tbird kernel: [ 6516.530534] end_request: I/O error, dev sdc, sector 268435447
Jun 10 22:56:40 tbird kernel: [ 6989.942904] end_request: I/O error, dev sdc, sector 640607
Jun 10 22:56:47 tbird kernel: [ 6995.179758] end_request: I/O error, dev sdc, sector 83335
Jun 10 22:56:47 tbird kernel: [ 6995.221551] end_request: I/O error, dev sdc, sector 83335
Jun 10 22:56:47 tbird kernel: [ 6995.335816] end_request: I/O error, dev sdc, sector 85479
Jun 10 22:56:47 tbird kernel: [ 6995.374813] end_request: I/O error, dev sdc, sector 85479
Jun 10 22:56:47 tbird kernel: [ 6995.473111] end_request: I/O error, dev sdc, sector 85751



Jun 10 23:21:24 tbird kernel: [ 8195.428090] scsi8 : SCSI emulation for USB Mass Storage devices
Jun 10 23:21:29 tbird kernel: [ 8198.957631] scsi 8:0:0:0: Direct-Access     STECH    Simple Drive     8.59 PQ: 0 ANSI: 0
Jun 10 23:21:29 tbird kernel: [ 8198.968184] sd 8:0:0:0: [sdc] 764251553 512-byte hardware sectors (391297 MB)
Jun 10 23:21:29 tbird kernel: [ 8198.968616] sd 8:0:0:0: [sdc] Write Protect is off
Jun 10 23:21:29 tbird kernel: [ 8198.969235] sd 8:0:0:0: [sdc] 764251553 512-byte hardware sectors (391297 MB)
Jun 10 23:21:29 tbird kernel: [ 8198.969611] sd 8:0:0:0: [sdc] Write Protect is off
Jun 10 23:21:29 tbird kernel: [ 8198.969623]  sdc: sdc1
Jun 10 23:21:29 tbird kernel: [ 8198.974382]  sdc: p1 exceeds device capacity
Jun 10 23:21:29 tbird kernel: [ 8198.974449] sd 8:0:0:0: [sdc] Attached SCSI disk
Jun 10 23:21:29 tbird kernel: [ 8198.974487] sd 8:0:0:0: Attached scsi generic sg3 type 0
Jun 10 23:21:41 tbird kernel: [ 8204.993124] attempt to access beyond end of device
Jun 10 23:21:41 tbird kernel: [ 8204.993131] sdc: rw=0, want=976767937, limit=764251553
Jun 10 23:21:41 tbird kernel: [ 8204.993144] attempt to access beyond end of device
Jun 10 23:21:41 tbird kernel: [ 8204.993146] sdc: rw=0, want=976767939, limit=764251553
Mon Jun 16, 2008 04:28
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szaka
Tuxera CTO

Joined: Tue Nov 21, 2006 23:15
Posts: 1645
Post 
The "end_request: I/O error ..." messages definitely imply to hardware problem. They are file system independent. More are at http://ntfs-3g.org/support.html#ioerror
Mon Jun 16, 2008 13:30
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