Re: [SLE] PROBLEM WITH TAPE HARDWARE COMPRESSION

On 12/30/05, KRAMO FIACRE <f.kramo@xxxxxxx> wrote:
> Hi!!!
> I've got an HP SURESTORE DAT 40 on my SUSE LINUX ENTERPRISE SERVER 8 BOX
> SP3.
> The tapes I use are marked 20/40GBYTE. But I can only make backup up to 20G,
> whereas on my ALPHA server with tru64 unix, I can save up to near 40 Gbytes
> using the dev file "/dev/rmt0h" (for tru64 V 4F) or "/dev/tape/tape0_d1"
> (for tru64 V 5.1B).
> I try to enable compression using the command "mt -f /dev/st0 datcompression
> 10", this command achieved succefully but nothing. I try to use the
> /dev/st0m or /dev/st0a, but these devices files seem not to be associated to
> physical device.
> So how can I perform backup with hardware compression?
> Please help
>
You may have to use stinit from the mt_st rpm.

With my LTO-1 drive I have had to use stinit to even get it to work
until SuSE 10.0. That is I am no longer calling stinit prior to using
my drive, but I had to for the last couple of years with various SUSE
kernels.

Unfortunately the 10.0 kernel does not properly detect end of tape.
So I'm running with a 2.6.14 vanilla kernel on my tape server. (It
works perfect from what I can tell and still no stinit.)

HTH
Greg
--
Greg Freemyer
The Norcross Group
Forensics for the 21st Century

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