Re: Help needed w/ HP SureStore DAT24

[Francisco Jose Montilla]

On Fri, 22 Oct 1999, Thomas Seidel wrote:

        Hi,

> Here is the output of df -k:
> Filesystem         1024-blocks  Used Available Capacity Mounted on
> /dev/md0             5916736  811879  4798422     14%   /
> /dev/md1             3106031   41673  2903712      1%   /var
> /dev/sda1            83561123 11922926  67127549     15%   /data
> 
> To backup I use:
> mt -f /dev/nst0 rewind
> mf -f /dev/nst0 datcompression 2
> dump 0uBf 96000000 /dev/nst0 /
> dump 0uBf 96000000 /dev/nst0 /var
> dump 0uBf 96000000 /dev/nst0 /data
> 
> The third dump stops at 97% with "end of tape". The sum of the used blocks of 
> the filesystems is about 12 GB.

        That's right. It seems that you aren't really setting compression
on, the math is clear :)

        I'd check the jumpers to see if the unit allows hardware
compression to be set by software. Check either hp.com for this or the
unit documentation. Once you're sure that the unit allows it, use mt-dds
to set it. I found that mt-st don't do it properly...

        cheers,

*****---(*)---**********************************************---------->
Francisco J. Montilla               System & Network administrator
[EMAIL PROTECTED]      irc: pukka        Seville            Spain   
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