Backup Problem

[anantham_1]

Dear Gurus,

syslog

May 21 14:18:47 HCANP vmunix: SCSI TAPE: dev = 0xcd000000 I/O error during clo
se
May 21 14:24:47 HCANP vmunix: SCSI TAPE: dev = 0xcd000000 I/O error during clo
se


Above mentioned error is coming while taking backup and it ends intermediately with console error "end of tape".Tried with new tape.Still problem repeats. Thanks for your reply.

With Regards,
Anand

[Sivakumar TS]

Hi,

The first thing to check is cleaning the drive !

Regards,

Siva.

[Darrel Louis]

Hi,

What type of tape device are you using?
Do you see a cleaning light flashing on the device?
What's the output of:
ll /dev/rmt|grep cd

Which product are you using for making backups?
Which tape device file are you using:
/dev/rmt/

Darrel

[anantham_1]

Dears,

Tried with new cleaning and data cartridge still problem repeats.

DAT drive model:SONY SDT9000
DATA Cartridge :HP DDS2

Output of "ll /dev/rmt|grep cd" command is nothing.The tape devie file used is "/dev/rmt/0m"

Regards,
Anand

[Darrel Louis]

Hi,

Are you sure you are using the correct tapes, DDS2?
Check tape state with ioscan:
- ioscan -fnCtape
Can you perform some tests on the tape device:
- Rewind tape (mt -f /dev/rmt/0m rew )
- tar cvf /dev/rmt/0mn /stand/vmunix
- tar rvf /dev/rmt/0mn /etc/profile
- Rewind tape
- check contents of tape: tar tvf /dev/rmt/0m


Darrel

[JASH_2]

Anand,

The error that it is failing with is that it is reaching the end of the tape. It could be that somebody has put some big files in recently which has made the backup a bit bigger, thus the backup is running out of tape. Try doing it in 2 bits, ie the database (if you have one) over night and the flat files during the day.

Regards,

JASH

[Robert-Jan Goossens · Accepted solution]

Hi Anand,

Try to diagnose the problem with the Sony Tape Tool for HP-UX PA-RISC.

http://sony.storagesupport.com/dds/tapeutility_hpux_parisc.htm

Regards,
Robert-Jan

[anantham_1]

I am using DDS2 cartridge only and I could able to take backup of very small size files.But if any big size(approximately more than 10k block size)file comes then it starts giving this error message.

Regards,
Anand

[Torsten.]

The error message indicates usually a bad drive.

If cleaning is not helpful, replace the drive.

[Sheriff Andy]

Have you used any other tapes besides this one tape? It could be a problem with the tape itself.

Andy

[Michael D. Zorn]

I think Torsten has it - bad drive. You can check that out with

#dd if= of=/dev/rmt/0m bs=8192 (or maybe even bigger)

Do you really need to use 0m? 0h should give more data pn the tape.

[anantham_1]

Dear all,

Thanks for your response.It was DAT drive problem only.After replacing drive it is working fine and I could able to take backup as well.Thanks once again.

With Regards,
Anand.