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Error in Back up Script !!

Posted on 2004-09-10
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Last Modified: 2013-12-15
Hi,

I have a script which does daily back up.

/**********************************

#!/bin/sh
DEVICE="sda1 sda3 sdb1 sdb2 sda5"
if ( ! mt -f /dev/st0 rewind)  then
      echo "No tape in drive" && exit 1
fi

for item in $DEVICE; do
      mount /dev/$item -o remount,ro
      dump -0auqb 64 -f /dev/st0 /dev/$item
      mount /dev/$item -o remount,rw
done

**********************************/

It failed and gave me the following error for one of the file system.

Error message
==========

DUMP: cannot rewrite /etc/dumpdates: Read only file system
DUMP: Entire dump is aborted.
mount: /var is busy.


Can somebody please tell me what cause this error and how should i rectify it. Shall i again run the back and see whether i am getting the error or what. Any help would be highly appreciated.

Thanks in the anticipation that I will get some useful hint to solve the above problem.

Cheers!!
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Question by:DipehKhakhkhar
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3 Comments
 
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Accepted Solution

by:
jlevie earned 150 total points
ID: 12031607
You script is invoking dump with the "u" option, whcih says to update the file /etc/dumpdates,. But you've re-mounted / as readonly so that update will fail.

You can either not mount / as readonly or remove the "u" option from the dump command.
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LVL 1

Author Comment

by:DipehKhakhkhar
ID: 12045647
Hi,

Thanks a lot for replying and explaining me about the possible cause of error.
I have made the changes like, removed -u option from the back up script so that it won't write anything now and kept the mouting of the file systems in the read mode only.

I hope tonight it will run properly.

Thanks !
Cheers

0
 
LVL 1

Author Comment

by:DipehKhakhkhar
ID: 12078392
Hi ,

Thanks for your help. It worked and backing is working fine now.

Cheers!
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