Make_Tape_Recovery to SDLT Drive - Fails (About 100 GB of Data)..

[Alzhy]

Is there a limitation to make_tape_recovery? I am trying to do a backup using make_tape_recovery of my entire vg00 plus a vg that houses our network recovery archives -- total of 100GB to a SAN connected SDLT tape drive (capacity 110/220 GB) and it fails about an hour into the process with:

pax: write : I/O error
pax: A write error has occurred.


Is this a pax limitation ?

[Steven E. Protter]

Pax does need a patch to back up files in excess of 2 GB.

PHCO_30420

Thats not the response I got though, there was just a notice about files not being included.

Is there anything on the tape? Is the write tab in the correct position? Perhaps you ran out of space on the /var filesystem during the archive build.

SEP

[Hoefnix]

Hi,
I knew that DLT was not support for Ignite some years back. Don't know if it had to do with a limitation you seem to run at.

Can it be you are running at a file size limit within your archive? See next thread:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=65946

HTH,
Peter

[Patrick Wallek]

Are you running this backup from the command line or from cron or a script?

I don't recall the capacity of SDLT, but if you are running it from a script or from cron then it may be possible that you are filling the tape. You must remember that your network recovery archives are compressed (actually gzip'ed) and thus will NOT compress anymore when written to tape.

I would suggest running the make_tape_recovery interactively from the command line. If you fill up one tape then pax will prompt you to insert a second tape and enter 'go' to continue.

I don't think there is a limit on what make_tape_recovery can handle.

I think I would look at this differently though. I would do the make_tape_recovery for your VG00 and then use something like fbackup to take the backup of your network recovery archives. Yes it is a 2-step / 2-tape process, but one that may be easier for you.