Gene Heskett wrote:
The latest amanda 2.4.4 has a program "amtapetype" that detects
the hardware compression settings of a drive. (It's time to
upgrade anyway :-)
Thats 'tapeinfo' Paul. :-) amtapetype checks the tape in the drive
for its actual capacity, and since it uses /dev/urandom as its data
source, it won't get very close to 12 gigs if the hardware
compressor is on.
Tapeinfo works fine on those systems that have it... :-)
Solaris e.g. does not have it.
And yes indeed, the latest amtapetype does detect hardware compression
without using any low level ioctl that is usually very device/OS
specific. (I know, because I wrote it. :-)
Try with a scratch tape:
amtapetype -c
(this takes on on a few minutes to run).
--
Paul Bijnens, Xplanation 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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