Re: dump problem !

[Alex Vorobiev <sasha forum swarthmore edu>]

you have to give dump information about the capacity of your
tape/tapedrive.  you could use density/block size, etc. (see dump man
page).  what worked for me was explicitly specifying the size (roughly) of
the tape i am using:

dump 0uBf 4000000 TAPE_DEVICE FILE_SYSTEM

for my DDSII 4/8Gb tapes; your mileage may vary.  this should let you fit
plenty of data on a tape.

> Hello !
> I am using script as below to back up my filesystems. But when I start
> to backup process, I am taking the message below  with no backup. I know
> that I am "rewind"ing the tape with "mt -f /dev/nst0 rewind" command
> before the backup operation, and
> the dat capacity is 4 GB (my filesystem is about 350 MB large). What is
> the reason of this problem ?
> 
> My script :
>   mt -f /dev/nst0 rewind
> 
>   #dump 0uf /dev/st0 /home/umut
>   #/sbin/dump 0uf /dev/nst0 /usr/local/web2/webusers
>   /sbin/dump 0ufn /dev/nst0 /usr/local/web2
> 
>   mt -f /dev/nst0 weof
>   mt -f /dev/nst0 rewind
> 
> 
> 
> 
> Output of the script :
> 
>   DUMP: No group entry for operator.
>   DUMP: Date of this level 0 dump: Tue Dec  1 14:15:20 1998
>   DUMP: Date of last level 0 dump: the epoch
>   DUMP: Dumping /dev/sda8 (/usr/local) to /dev/nst0
>   DUMP: mapping (Pass I) [regular files]
>   DUMP: mapping (Pass II) [directories]
>   DUMP: estimated 305677 tape blocks on 7.85 tape(s).
>   DUMP: dumping (Pass III) [directories]
>   DUMP: dumping (Pass IV) [regular files]
>   DUMP: End of tape detected
>   DUMP: Closing /dev/nst0
>   DUMP: Change Volumes: Mount volume #2
>   DUMP: Is the new volume mounted and ready to go?: ("yes" or "no") y
>   DUMP: Volume 2 begins with blocks from inode 165271 -----------> ??? 
>   DUMP: End of tape detected
>   DUMP: Closing /dev/nst0
>   DUMP: Change Volumes: Mount volume #3
>   DUMP: Is the new volume mounted and ready to go?: ("yes" or "no")
>   DUMP: Volume 3 begins with blocks from inode 165271 -----------> ???
>   DUMP: End of tape detected
>   DUMP: Closing /dev/nst0
>   ....
>   and going on with the same message ???
> 
> Can anyone help me ?
> 
> Thansk lot !
> 
> Umut Ceyhan