fbackup

[YOGI_3]

Hi all...


how to list backup files taken by fbackup utility...

Thanks,
Yogesh

[Pete Randall]

frecover -N


Pete

[Steven E. Protter · Accepted solution]

/usr/sbin/frecover -I /var/tmp/index -f /dev/rmt/0m -v ; /usr/bin/cat /var/tmp/index


I got this out of the sam command log.

SEP

[renarios]

Hi Yogesh,

At the fbackup command add -I path. This will create an index when backing up.
To do it afterwords, do an frecover -Nv
(no recovery) Prevent frecover from actually recovering any files onto disk, but read the backup as if it was, in fact, recovering the data from the backup, producing the same output that it would on a normal recovery. This option is useful for verifying backup media contents in terms of validity (block checksum errors are reported), and contents (a listing of files can be produced by using the -N and -v options together).

cheerio,

Renarios

[YOGI_3]

hi all..
steven's reply work perfectly..
but after stevens reply ...its asking following --->>

# /usr/sbin/frecover -I /var/tmp/index -f /dev/rmt/0mn -v ; /usr/bin/cat /var/tmp/index>
frecover(2105): did not find expected file marker
frecover(5419): checksum on volume header is incorrect.
frecover(5420): not an fbackup volume; magic value is incorrect
frecover(2105): did not find expected file marker
frecover(5412): Do you wish to try to salvage this volume? (^[yY]/^[nN]) n
frecover(5411): Do you wish to try a different volume? (^[yY]/^[nN])
------------------------------------
after this its showing the files that has backup ....
will it make some problem while restoring?

[Steven E. Protter]

Your tape may not be an fbackup tape.

It may need to be rewound.

Try it once with sam and see what it finds.

If the tape is important, make sure the tape is write protected.

SEP

[YOGI_3]

******************************************
frecover(2105): did not find expected file marker
frecover(5419): checksum on volume header is incorrect.
frecover(5420): not an fbackup volume; magic value is incorrect
frecover(2105): did not find expected file marker
frecover(5412): Do you wish to try to salvage this volume? (^[yY]/^[nN]) n
frecover(5411): Do you wish to try a different volume? (^[yY]/^[nN])
******************************************
what this error exactly means...backup utility used is fbackup only....
will it give any problem with restiration.

Waitng for replis

[Naveej.K.A]

Yogesh,

I doubt that you have a defective tape/tape drive. That is what the error is pointing to. Are you sure you are using a fbackup tape.

Try rewinding the tape and then do an frecover.

Regards,
Naveej

[Deoncia Grayson_1]

By the error you are receiving, its not fbackup tape... but you can try using the frecover command to recover a command and next time when it ask Do you want to salvage this tape... answer yes to check what it does.

[Bill Hassell]

The index of all the files can always be read with the -I option as in:

frecover -I - -f /dev/rmt/what_ever

The -Nv option will take a VERY long to produce . The purpose of -N is to read the entire tape, check the special fbackup checksums and display the filenames. The -I option shows all the files that were selected for backup. -N will show the actual files backed up, usually identical unless someone removed a file during backup.

The error you are seeing is simple: the tape is not an fbackup tape. Whatever was written on the tape (perhaps by accident) has destroyed anything previously written by fbackup. You can try pax to read the tape and see if it has a tar or cpio backup.

It's really important to protect a backup tape once you start the backup. If the permissions for the tape drive are open (ie, 666) then anyone can write over your backup before you eject the tape. Only root should be allowed to write on a tape drive (600 permissions).