topic Re: Frecovery - Error in Operating System - HP-UX

Frecovery - Error

Faizer — Sat, 28 Feb 2004 07:05:23 GMT

I have HP UX11.11. I use HP Ultrium Tapes to backup my system through SAM [fbackup].
The log provides me a successful backup. On restoration/ Verification I do get the following error.

frecover(2114): read error from input device (I/O error)
frecover(2114): read error from input device (I/O error)
frecover(2113): unable to resync backup media

This error is coming on all my backups.
To verify I use frecover -Nxv -f /dev/rmt/0m 2> index&
In addition I use HP Ultrium tapes. make C7971A.
Is this a media problem, or a hardware problem or a problem with frecover, or are there any patches to be applied.
Please Help....
best regards
Faizer

Re: Frecovery - Error

Paula J Frazer-Campbell — Sat, 28 Feb 2004 07:14:08 GMT

HI

Check the backup device, your are using "/dev/rmt/0m", should it be 1m or 2m ?

Paula

Re: Frecovery - Error

Faizer — Sat, 28 Feb 2004 07:17:29 GMT

The recovery command as registered in the br_log file
frecover -xv -o -X -g /var/sam/graphTBAa22918 -f /dev/rmt/0m

The restore goes through to a certain extent then gives the error.

Re: Frecovery - Error

Paula J Frazer-Campbell — Sat, 28 Feb 2004 07:22:45 GMT

HI

Options:-

Clean the drive - use band new tape and try from scratch.

Is the backup spanning two tapes?

Paula

Re: Frecovery - Error

Faizer — Sat, 28 Feb 2004 07:49:20 GMT

Its not spanning 2 tapes.
Its brand new tapes that are used and its Ultrium [ HP brand].

Is it required to apply this particular patch..
PHCO_28998

Re: Frecovery - Error

Paula J Frazer-Campbell — Sat, 28 Feb 2004 08:49:25 GMT

Hi
I would apply that patcth as it is cumulative one and appears to cover the problem you are having.

Paula

Re: Frecovery - Error

Faizer — Sun, 29 Feb 2004 12:10:28 GMT

Hi
Well of of my colleagues asked me to do teh following.

- Edit the configuration file /etc/sam/br/fbackup_config as follows

blocksperrecord 256
records 64
checkpointfreq 1024
readerprocesses 6
maxretries 5
retrylimit 5000000
maxvoluses 200
filesperfsm 2000

What would this do.

Re: Frecovery - Error

Senthil Kumar .A_1 — Mon, 01 Mar 2004 01:07:26 GMT

hello faizer,

If ur collegues suggest that there is a problem with
/etc/sam/br/fbackup_config file ,there is a way to test indeed it is a problem with that file or not,

since the file seems to be sam related file ,you can try taking backup using fbackup utility without sam.Refer man pages of fbackup for its usage.then try restoring from this backup using frecover.If u find no error while recovering based on this activity,then u can conclude that there must indeed be some configuration error with /etc/sam/br/fbackup_config file.

best of luck

senthil