Hi Nigel!

Nigel Allen wrote:

I'm experiencing an odd problem with a USB DAT drive that keeps running out of space. Apologies for the length of the post.

The drive is supposed to be 36 / 72 GB.

...

Output Size (meg)       33927.1    33927.1        0.0
Original Size (meg)     50710.1    50710.0        0.0

Avg Compressed Size (%) 66.9 66.9 10.0 (level:#disks ...)

...

define tapetype HP-DAT72 {
    comment "HP DAT72 USB with hardware compression on"
    length 72 G
}

...

define dumptype custom-compress {
   global
   program "GNUTAR"
   comment "Dump with custom client compression"
   exclude list "/etc/amanda/exclude.gtar"
   compress client custom
   client_custom_compress "/usr/bin/bzip2"
}

...

mail.airsolutions.com.au mapper/VolGroup00-LogVol00 custom-compress

mail.airsolutions.com.au        sda1    custom-compress

Hardware & Software - compression together is allways a bad combination!

bzipped 34G would fit on d 36G tape but the hardware-commpression of the
tape will blow them up to much more so you run out of tape.

and rely on hardware-compression only (not recommended).


Bye, Peter
WOTLmade