topic Problem in restoring from tape. in Operating System - Linux

Problem in restoring from tape.

skiran — Thu, 11 May 2006 10:32:45 GMT

Hello All,
I having a problem in restoring backup data . I am using suse linux 7.0.

The backup command used was "find /data -xdev -print | cpio -oBa -H crc" | dd of=/dev/nrmt0h bs=5120"

I tried the following command to list the files . "dd if=/dev/nrmt0h bs=5120 | cpio -icdmv " But it was throwing following error.
"cpio: Unrecognizable archive"

Can anybody tell me the command or steps to restore this.?

Thanks alot..
Shashi

Re: Problem in restoring from tape.

Ivan Ferreira — Thu, 11 May 2006 11:00:42 GMT

I think that the "t" option is needed to list the contents of the cpio backup. Also, have you runned that command right after the backup? Because if so, you must rewind the tape before listing the contents:

mt -f /dev/nrmt0h rewind
dd if=/dev/nrmt0h bs=5120 | cpio -itcdmv

Re: Problem in restoring from tape.

Stuart Browne — Thu, 11 May 2006 23:50:22 GMT

You put data on the tape in '-H crc' mode. You need to read it off in '-H crc' mode too.

dd if=/dev/nrmt0h bs=5120 | cpio -ivdm -H crc

see what that does for you.

But Ivan is right.. TO list the tape, you want just:

dd if=/dev/nrmt0h bs=5120 | cpio -vit -H crc