On Tue, 22 Jul 2008 at 3:06pm, Doyle Collings wrote
I am using a Tandberg Data 1x7 Magnum LTO4 Autoloader. When I use gnutar with a block size of 2048 (tar -b 4096) I can back up a 2.6 gig iso file in 37 seconds. When I use amanda, the same file takes 4 minutes. I used the following configure line when I compiled my amanda installation./downloads/amandasource/amanda-2.6.0p1/configure --with-maxtapeblocksize=2048 --with-user=amandabackup --with-group=disk --with-configdir=/etc/amanda I then added the blocksize line to my amanda.conf define tapetype LTO4 { comment "LTO4 Library" length 802816 mbytes blocksize 2048 kbytes filemark 0 kbytes
On a whim, try "blocksize 2048". 'man amanda.conf' says that no modifier is necessary, so maybe it's confusing the parser somehow. From a quick grep through my logs, I can't see the blocksize used reported anywhere.
-- Joshua Baker-LePain QB3 Shared Cluster Sysadmin UCSF
