backup fails

[Pieter_5]

Hi,

When I backup my filesystem to a DLT-tape I get the following errors.

fbackup(3027): ioctl error, can't query outfile
at media record 668850
fbackup(3102): attempting to make this volume salvagable
fbackup(3123): could not read the previous checkpoint record
fbackup(3105): writing 2 EOFs and rewinding the tape
fbackup(3106): please mount a good tape
fbackup(3041): output file /dev/rmt/0m is currently being used and not available
fbackup(3019): would you like to enter a new output file?

What is the cause of this?

[Bernhard Mueller]

Pieter,

I would guess it sounds like a bad tape or a problem with the drive.

Did you try a new fbackup with a new tape?
Did you check the drive LEDs if it wants a cleaning tape?
Did you check for other processes attempting to use /dev/rmt/0m (use lsof, if you do not have it, download and check using lsof | grep /dev/rmt/0m)

Regards,
Bernhard

[G. Vrijhoeven]

Hi,

Can you do a # mt -t /dev/rmt/0m rew?
Can you write files to the tape with tar?
( tar cvf /dev/rmt/0m /etc/hosts )
Can you do a ioscan -fnkCtape and list the device file?

Gideon

[Paula J Frazer-Campbell]

Hi

The error:-

fbackup(3106): please mount a good tape

Indicated either a bad tape, dirty drive or a faulty drive.

Paula

[Steven E. Protter]

One thing I can tell you. Nothing on that tape is salvageable. I've had to replace tapes in that circumstance many times. At least once, I've had to ditch the tape drive and and get a new one from HP Hardware.

You may see some errors in dmesg or /var/adm/syslog/syslog.log output

ioscan the tape drive?

SEP

[Todd McDaniel_1]

Pieter,

Is this happening with every tape or one tape?

I would first try to clean the drive with a clean tape and then try to run a test backup with a new unused DLT tape.

If all else fails I would replace the drive and test your tapes again... then if that is still happening, I would check with HP support.