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Tape Libraries and Drives
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error reading tape C1537A

colvista
Occasional Contributor

error reading tape C1537A

HI ...

I `ve a hpux server with DDS3 tape, The ioscan -funC tape showme the tape claimed with the device ok, when i try make a frecover the tape don`t work

bog1bd> ioscan -funC tape
Class I H/W Path Driver S/W State H/W Type Description
===============================================================
tape 0 56/52.0.0 tape2 CLAIMED DEVICE HP C1537A
/dev/diag/rmt/c1t0d0 /dev/rmt/0mn /dev/rmt/c1t0d0BESTb
/dev/rmt/0m /dev/rmt/0mnb /dev/rmt/c1t0d0BESTn
/dev/rmt/0mb /dev/rmt/c1t0d0BEST /dev/rmt/c1t0d0BESTnb
bog1bd> frecover -f /dev/rmt/0m -I /tmp/reco.txt
frecover(5403): Unable to open or identify device at /dev/rmt/0m

frecover(5432): Media rewind failed
frecover(5402): failed close on device /dev/rmt/0m
frecover(5404): Press return when the next volume is ready on /dev/rmt/0m:


i try put many cartridges but the messagess are same,,,

too I change the tape for a DDS C1533A. but the message is:

bog1bd> frecover -xv -X -g /etc/sam/br/graphJBAa01044 -f /dev/rmt/0m
frecover(2105): did not find expected file marker
frecover(5409): unable to read volume header
frecover(5418): not an fbackup volume; unable to read volume header
frecover(2105): did not find expected file marker
frecover(5412): Do you wish to try to salvage this volume? [yes no] no

any idea.. please HELPME!!!! ARGGGG!!!
4 REPLIES
erics_1
Honored Contributor

Re: error reading tape C1537A

Try removing and recreating the tape device files:

rmsf -H 56/52.0.0

ioscan -fn

insf -e

I'm going with the assumption that something changed regarding drives that were added and/or removed since the last reboot. After the insf command, run ioscan again and check for your tape drive.

Regards,
Eric
Torsten.
Acclaimed Contributor

Re: error reading tape C1537A

Because of the age of the drive it could likely be bad.
Try to write with another tool (tar/dd) to the drive and watch the syslog. If you see I/O errors, replace the drive.

Hope this helps!
Regards
Torsten.

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Mike Shilladay
Esteemed Contributor

Re: error reading tape C1537A

Hi,

Is the tape you are trying to recover from an older version of HP-UX?

I know that if you are trying to recover an hp-ux 10.20 fbackup volume on hp-ux 11.0 then you will get the message exactly as the latter message shows.

If this is the case you will need to recover the volume on an older version of hp-ux, however, unless you know the version of hp-ux that the tape was cut on, you maybe trying a number of different verisons of OS.

For future reference, if you are cutting tapes for archive purposes, it is best to use tar.

Mike.
Khairy
Esteemed Contributor

Re: error reading tape C1537A

put new tape and test the tape drive with commands like tar or dd.

If the operation failed with read or I/O error, then it is possible your tape drive is failing.