Re: Split backups on multiple tapes

Remberto Martinez wrote:


I've being using amanda for a while. I have the problem
from time to time that my backups run bigger than 20 Gb.
Normally the hack used was to split the backups in two:
systems backup and users backup.


How did you split it?  Did you make two DLE's (disklistentries),
one for systems-stuff and one for users directories?

Still my company's information is growing fast. I will soon
have the limit that I can not afford a third split with the
current budget and amount of tapes I am dealing with.


Here I can't follow, when splitting backups over multiple tapes,
you do need to have more tapes, don't you?  I don't see how
splitting a single dump image over multiple tapes can change this.
Just split them up more, and/or take a longer dumpcycle.

To prove it is possible, I run a config where amanda does backups
of 23 Gbyte compressed (33 Gbyte before compression) to a DDS2
tape (native 4 Gbyte capacity).  Dumpcycle is 10 runs over
2 weeks, and I needed to split the partition into 30 chunks using
the gnutar tricks with include/exclude.
I could do this by carefully choosing the 30 chunks, so that not
all of them change completely each day.
If this would be e.g. a database, then this trick would not work.

My question is, is there any other solution, hack, or
ongoing project for this problem? I am ready to collaborate if somebodyis working currently in this solution.


Yes, indeed, someone is working on a real span/split feature
for amanda.  This is the last thread about it:

http://marc.theaimsgroup.com/?t=108854313400005&r=1&w=2



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