[Gllug] Tape backups

Gordon Joly gordon.joly at pobox.com
Mon Feb 16 23:28:26 UTC 2009


At 22:20 +0000 16/2/09, James Hawtin wrote:
>On Mon, Feb 16, 2009 at 09:10:21PM +0000, t.clarke wrote:
>>  Our approach, on a relatively modest database, is to copy twice 
>>daily the whole
>>  unmounted filesystem  (raw dd) to another disc partition, remount 
>>and carry on,
>>  and then backup the disc copy to tape.  This keeps downtime to a matter of
>>  seconds.  The tape-copies are re-read against the disc and 
>>compared to ensure
>>  that the tape has been written OK.  On the few occasions when I have need of
>>  some historic info the tapes have always been readable.
>>  As the database is quite small, we also whizz the copy overnight 
>>to another box
>>  with a DVD writer and write an ISO file as well.
>
>Do you make use the of lvm snapshot facility to minimise the ammount of time
>your filesystem is unavailable?
>
>James


And stop mysql?

Gordo

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