Re: st driver doesn't seem to grok LTO partitioning

[Emmanuel Florac <eflorac@intellique.com>]

Le Fri, 25 Dec 2015 17:53:46 +0200 (EET)
Kai Makisara <Kai.Makisara@kolumbus.fi> écrivait:

> The patch at the end of this message is an attempt to make the 
> partitioning work for both old and new drives. The patch is against
> st.c from the current git kernel, although I have tested it in 4.3.3.
> It seems to work with my HP DDS-4 drive. It includes some debugging
> printks and I have tried to see that the commands that would have
> been sent to newer drives are basically correct.
> 
> The patch uses the scsi level of the device to separate processing.
> The FORMAT MEDIUM command is defined in SCSI-3 and I suppose that no
> current drive is still SCSI-2. In addition to the "sane" changes
> using the method to specify partitions, the patch implements the
> following: if the size is 1, the driver tells the drive to use
> default partitioning for two partitions. For the HP Ultrium this
> should result in partition 0 of 1425 GB and 1 of 37.5 GB. I don't
> know if this is a useful addition.

Great I'll give it a try soon next week!

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