tape backup using

[boncafe]

I have created a tape backup using

tar cf /dev/nst0 /home

When I try to view the contents of the backup with this command

tar tvf /dev/nst0

My systems hangs for about 5 minutes and then returns...

tar: /dev/st0: Cannot read: Input/output error
tar: At beginning of tape, quitting now
tar: Error is not recoverable: exiting now

Any ideas what I might be missing?

[Steven E. Protter]

Shalom,

Perhaps the tape needs to be rewound.

Or perhaps the write failed.

echo $?

After making the backup.

A non-zero answer means failure.

Check the write tab.

SEP

[boncafe]

I backup files by .tar.gz Read & Write It's work, But I backup folder ( tar -cvf /dev/nst0 /home ) Write success.

If I have restore ( tar -xvf /dev/nst0 /home )
Not work, Error

tar: /dev/st0: Cannot read: Input/output error
tar: At beginning of tape, quitting now
tar: Error is not recoverable: exiting now


Note: I have used Cleaning Tape.

[Francisco Manso_2]

What kind of bus is the tape connected to?. Try to see what is in dmesg when you perform the tar. Also, while backing up try to "tail -f /var/log/messages". Also check /proc/scsi/scsi before and after the backup (I have a similar problem, and it fails because the unit ID-connected to SAS bus- changes during the tar)

[boncafe]

I shaved solution.
Use Tap Cleaning and run command # mt -f /dev/nst0 erase

Ok, It work.

Thank you,
Tips: http://www.susethailand.com