Dud tapes

[Dan Langille]

I'm using Bacula 7.0.5 on FreeBSD 10.1 (bacula-dir) and FreeBSD 9.3 (bacula-sd).

Sometimes I get dud tapes.  Or at least, tapes my tape drive does not like.

For example:

###
01-May 09:39 crey-sd JobId 205441: End of Volume "FAI022" at 11:11326 on device "DTL03" (/dev/nsa0). Write of 64512 bytes got 49152.
01-May 09:39 crey-sd JobId 205441: Error: Error writing final EOF to tape. This Volume may not be readable.
tape_dev.c:941 ioctl MTWEOF error on "DTL03" (/dev/nsa0). ERR=Input/output error.
01-May 09:39 crey-sd JobId 205441: End of medium on Volume "FAI022" Bytes=10,784,406,528 Blocks=167,168 at 01-May-2015 09:39.
01-May 09:39 crey-sd JobId 205441: 3307 Issuing autochanger "unload slot 2, drive 0" command.
###

See also, this from /var/log/messages:

###
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): WRITE FILEMARKS(6). CDB: 10 00 00 00 01 00
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): CAM status: SCSI Status Error
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): SCSI status: Check Condition
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): SCSI sense: MEDIUM ERROR asc:c,0 (Write error)
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): Command Specific Info: 0x28b4b
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): Error 5, Retries exhausted
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): WRITE FILEMARKS(6). CDB: 10 00 00 00 02 00
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): CAM status: SCSI Status Error
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): SCSI status: Check Condition
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): SCSI sense: MEDIUM ERROR asc:c,0 (Write error)
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): Command Specific Info: 0x28b4b
May  1 09:39:01 knew kernel: (sa0:sym0:0:1:0): Error 5, Retries exhausted
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): WRITE FILEMARKS(6). CDB: 10 00 00 00 01 00
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): CAM status: SCSI Status Error
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): SCSI status: Check Condition
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): SCSI sense: MEDIUM ERROR asc:c,0 (Write error)
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): Command Specific Info: 0x11fb
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): Error 5, Retries exhausted
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): WRITE FILEMARKS(6). CDB: 10 00 00 00 02 00
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): CAM status: SCSI Status Error
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): SCSI status: Check Condition
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): SCSI sense: MEDIUM ERROR asc:c,0 (Write error)
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): Command Specific Info: 0x11fb
May  1 09:42:41 knew kernel: (sa0:sym0:0:1:0): Error 5, Retries exhausted
###

In this case, I will mark the tape as DISABLED and once it is past it's recycling date, I will retire the tape.

Best practice might be to rerun the backup, but this backup is also on disk.

What do you usually do with tapes such as this?  Is this tape or hardware?

—
Dan Langille
http://langille.org/





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