On 2008-11-21 15:38, Uwe Beger wrote:
Hello list members,
I am using amanda since many years successfully (and with still an old
version VERSION="Amanda-2.4.4p3") for backing up a small server.
The backup scheme is comp-user-tar for the disklist entry in question. I
try to restore one subdirectory of this disklist entry containing about
2 MILLION files using amrecover. This restore takes very very very long
and I am looking for a faster method.
Any ideas are highly appreciated.
Did you do in amrecover:
cd subdirectory
add *
(this is very slow, and I even doubt it would work at all...)
or did you do:
cd parentfolder
add subdirectory
should be faster.
But anyway, 2 million (2000000) files for one folder *is* much in any case.
Even on disk, I wouldn't even *dare* to execute an "ls" there!
And then, do you restore *over* the existing folder? In that case
the OS will need to hunt through the existing *huge* folder removing eventually
the already existing entry, and then probably slower each time, adding
a new name into the directory.
Anyway, a completely different approach would be to use amrestore
and pipe to tar:
cd /the/destination/top/level/dir
amrestore -p /dev/nst0 hostname '^/disk/name$' |
tar --numeric-owner -xpGvf - ./your/lost/subfolder
(from: http://wiki.zmanda.com/index.php/Restoring_files#Using_amrestore )
And see the above page for e.g. the meaning of tar option "G", possibly
slowing down your process...
--
Paul Bijnens, xplanation Technology Services Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
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