Tape Errors

[JBracy]

I'm getting an error backing up Final Cut Server Data on a SAN volume. The Tape drive is connected to an XServe via SCSI, and the XServe is a Fibre client on the SAN. I'm assuming that the MD5 errors are a result of the files being modified during the backup (though the time stamp on the files show no access for several days). The concerning thing is that the Summary says that only 47GB and 64 files were backed up. This was approximately 2TB of data and the backup used 5 LTO3 400/800GB tapes. The summary also shows Compression off where I told it to use Hardware compression and as a test tried Software compression as well.

 

here is the log file:

 

+ Recycle backup using FCS Data at 7/14/2009 3:29 PM (Execution unit 1)

To Media Set FCS...

7/14/2009 3:29:30 PM: Recycle backup: The Media Set was reset

7/14/2009 3:29:30 PM: Copying Proxy Media

7/14/2009 3:38:59 PM: Snapshot stored, 3027 KB

7/14/2009 3:39:03 PM: Execution completed successfully

Completed: 6704 files, 12.5 GB

Performance: 2062.2 MB/minute

Duration: 00:09:32 (00:03:21 idle/loading/preparing)

 

7/14/2009 3:39:03 PM: Copying Production Media

7/14/2009 6:35:15 PM: Verifying Production Media

> !Trouble reading: "1-FCS" (396198), error 0 ( unknown)

> !Trouble reading: "1-FCS" (396198), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/Andy Anderson photographing Peter Cheung tk1.mov" does not match stored MD5 digest.

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 06 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

> !Trouble reading: "1-FCS" (972207), error 0 ( unknown)

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 04 00 00 00 0a 10 00 00 00 00 44 00 00 00 33 0d

(HP |Ultrium 3-SCSI |G36Z)

7/14/2009 7:08:25 PM: Copying Production Media

7/14/2009 10:09:55 PM: Verifying Production Media

> !Trouble reading: "2-FCS" (113), error 0 ( unknown)

> !Trouble reading: "2-FCS" (113), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/DavidGarren_03.mov" does not match stored MD5 digest.

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 08 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

> !Trouble reading: "2-FCS" (896127), error 0 ( unknown)

> !Trouble reading: "2-FCS" (896127), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/" does not match stored MD5 digest.

> !Trouble reading: "2-FCS" (896127), error 0 ( unknown)

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 0b 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

7/14/2009 10:41:00 PM: Copying Production Media

7/15/2009 1:43:08 AM: Verifying Production Media

> !Trouble reading: "3-FCS" (192120), error 0 ( unknown)

> !Trouble reading: "3-FCS" (192120), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/MasoodRamezan_06.mov" does not match stored MD5 digest.

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 06 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

> !Trouble reading: "3-FCS" (256121), error 0 ( unknown)

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 04 00 00 00 0c 10 00 00 00 00 44 00 00 00 33 0d

(HP |Ultrium 3-SCSI |G36Z)

7/15/2009 1:54:45 AM: Copying Production Media

7/15/2009 4:56:12 AM: Verifying Production Media

> !Trouble reading: "4-FCS" (256123), error 0 ( unknown)

> !Trouble reading: "4-FCS" (256123), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/Reyes_waterMist_04.mov" does not match stored MD5 digest.

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 09 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

> !Trouble reading: "4-FCS" (320124), error 0 ( unknown)

> !Trouble reading: "4-FCS" (320124), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/" does not match stored MD5 digest.

> !Trouble reading: "4-FCS" (320124), error 0 ( unknown)

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 09 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

7/15/2009 5:09:40 AM: Copying Production Media

7/15/2009 5:31:49 AM: Snapshot stored, 850 KB

7/15/2009 5:31:53 AM: 22 execution errors

Completed: 3326 files, 1574.9 GB

Performance: 2184.9 MB/minute

Duration: 12:33:10 (00:15:06 idle/loading/preparing)

 

7/15/2009 5:31:53 AM: Verifying FCS

> !Trouble reading: "5-FCS" (384127), error 0 ( unknown)

> !Trouble reading: "5-FCS" (384127), error 0 ( unknown)

> !Generated MD5 digest for file "/Volumes/CCS_Video/Production Media/Media/" does not match stored MD5 digest.

Additional error information for device "HP Ultrium Gen 3 DC" [0:3],

Sense > f0 00 03 00 00 00 0c 10 00 00 00 00 31 00 00 00 30 29

(HP |Ultrium 3-SCSI |G36Z)

7/15/2009 5:55:44 AM: 3 execution errors

Remaining: 1 files, zero KB

Completed: 64 files, 47.7 GB

Performance: 479.6 MB/minute

Duration: 01:43:31 (00:01:43 idle/loading/preparing)

 

7/15/2009 5:55:44 AM: 25 execution errors

Total duration: 14:26:13 (00:20:11 idle/loading/preparing)

[JBracy]

Does anyone have a reply for this? It also looks like the tapes are not being filled up. I'm assuming that Retrospect is reporting the total possible capacity (800 GB), but if it cannot compress 2:1, then reports free space (ie Tape 1 says 414.4 GB used 366.7 GB free even though it then moved on to fill 7 tapes all with similar stats)

[Mayoff]

Trouble reading errors sounds like some type of device communication error or dirty tape heads. All of those look like major error reading tape.