[linux-lvm] dump/restore on a regular file?

Herbert Poetzl herbert at 13thfloor.at
Sat Jan 17 02:30:02 UTC 2004

On Sat, Jan 17, 2004 at 12:20:37PM +0530, kanika nema wrote:
> hi,
> I wanted to use the dump/restore using the backup as a regular file, 
> instead of the tape. I read the manpages and the documentation on 
> dump/restore..but i cant figure out how to do it on a regular file.
> The manpage says the file can be anything:
>                      Write the backup to file; file may be a special device 
> file like
> 	     /dev/rmt12 (a tape drive), /dev/rdisk1s3 (a disk drive), an 
> 	     ordi-
> 	     nary file, or `-' (the standard output).
> I tried using a regular file, but it keeps tryin to open the tape device, 
> and it cant do it and the dump aborts.
> Can someone tell me how to do this correctly, or is it that dump/restore 
> works only on tape drives (coz thats what it was originally built for).

dump 0f /backup/file.dump /mnt/path
  (normal dump of fs in /etc/fstab)


dump 0zf /backup/file.dump /other/mnt/path
  (does compressed dumps, smaller)


dump 0zf /backup/file.dump /dev/unknown
  (dump of device not in /etc/fstab)


> thanx for ur help,
> Kanika
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