topic Re: Backup Problem in Operating System - HP-UX

Backup Problem

anantham_1 — Sun, 21 May 2006 04:23:43 GMT

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

Re: Backup Problem

Sivakumar TS — Sun, 21 May 2006 05:23:45 GMT

Hi,

The first thing to check is cleaning the drive !

Regards,

Siva.

Re: Backup Problem

Darrel Louis — Sun, 21 May 2006 05:23:55 GMT

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

Re: Backup Problem

anantham_1 — Sun, 21 May 2006 05:40:28 GMT

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

Re: Backup Problem

Darrel Louis — Sun, 21 May 2006 06:36:10 GMT

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

Re: Backup Problem

JASH_2 — Mon, 22 May 2006 07:15:38 GMT

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

Re: Backup Problem

Robert-Jan Goossens — Mon, 22 May 2006 07:29:59 GMT

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

Re: Backup Problem

anantham_1 — Mon, 22 May 2006 12:12:41 GMT

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

Re: Backup Problem

Torsten. — Mon, 22 May 2006 12:15:42 GMT

The error message indicates usually a bad drive.

If cleaning is not helpful, replace the drive.

Re: Backup Problem

Sheriff Andy — Mon, 22 May 2006 14:44:30 GMT

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

Andy

Re: Backup Problem

Michael D. Zorn — Mon, 22 May 2006 16:09:32 GMT

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.

Re: Backup Problem

anantham_1 — Sat, 27 May 2006 02:23:14 GMT

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.