restore from multiple holding disk files

[Jonathan Dill]

Hi folks,
I'm trying to help someone do a restore from a dump that is split into 
multiple chunks in holding disk files.  In this case, flushing to tape 
first is not an option.  I thought amrestore could do it, but then I 
read the manpage and didn't see a way to do it.

The only way that I could think of doing it is to use dd to strip the 
amanda header off the chunks and then concatenate them together into 
one, huge file.  The filesystem on the holding disk is XFS so the 
filesize should not be a problem.

Is there an easier way to do this?  The files are ufsdump being restored 
to a Solaris machine, but the holding disk files are on a Linux box 
which does not support ufsrestore.

Thanks,
--jonathan

Re: restore from multiple holding disk files

[Jonathan Dill]

Paul Bijnens wrote:
If split in chunks, just feed the first part; the rest is done
automatically (the name of the next part is in the header of
each holding chunk).
Hmm.  That's what I thought, finding subsequent chunks might not be 
working correctly then for whatever reason, but I'll have to search for 
the e-mail from the person who was having the problem.

--jonathan

Re: restore from multiple holding disk files

[Paul Bijnens]

Jonathan Dill wrote:
Paul Bijnens wrote:
If split in chunks, just feed the first part; the rest is done
automatically (the name of the next part is in the header of
each holding chunk).

Hmm.  That's what I thought, finding subsequent chunks might not be 
working correctly then for whatever reason, but I'll have to search for 
the e-mail from the person who was having the problem.
Yes, the absolute pathname of the nextchunk is found in the header
of each holdingdisk file.
That is needed, befause amanda can spread chunks over different 
holdingdisks.  But holdingdisk is meant as a temporary staging area
not as the ultimate format.   The virtual tapes are meant for that.

That means indeed that you cannot easily move holdingdisk files around
e.g. burn them on CD etc.  For easy restoring you need to put them
on the exact location as where they were created.
Otherwise, you'll have to fall back to little programs with
dd bs=32k skip=1 ... etc.

--
Paul Bijnens, XplanationTel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUMFax  +32 16 397.512
http://www.xplanation.com/  email:  [EMAIL PROTECTED]
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