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Old 01-08-2010, 01:10 AM   #1
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Registered: Sep 2009
Posts: 23

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Restore from Tape: /bin/tar: /dev/rmt/0bn: Cannot read: Cannot allocate memory

Hi All,

i'm having a problem here, where i cannot restore certain file from tape. This is the first time i'm using tape backup in linux.

Successful file restore with tar command:
emlxmba[mb]% /bin/mt -f /dev/rmt/0bn rewind
emlxmba[mb]% /bin/mt -f /dev/rmt/0bn asf 2
emlxmba[mb]% /bin/tar xvf /dev/rmt/0bn

Failed fail restoration with tar command:
emlxmba[mb]% /bin/mt -f /dev/rmt/0bn rewind
emlxmba[mb]% /bin/mt -f /dev/rmt/0bn asf 1
emlxmba[mb]% /bin/tar xvf /dev/rmt/0bn
/bin/tar: /dev/rmt/0bn: Cannot read: Cannot allocate memory
/bin/tar: At beginning of tape, quitting now
/bin/tar: Error is not recoverable: exiting now

Certain file id (2,4,6,7,8,9..) able to restore successfully.
Certain file is (1,3,5,10..) not able to restore with above error.

I try search in the net, it says may due to block size different.
I dont understand the concept and tried the command to determine/fix block size but failed.

Anyone can help here?

Old 01-09-2010, 06:03 PM   #2
Registered: Mar 2004
Distribution: SUSE8.2, 9.2, Knoppix
Posts: 323

Rep: Reputation: 31
What does "mt -f /dev/rmt/0bn status" show?


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