Hi,
I am using Ubuntu Hoary with the standard 2.6.10 kernel.
I have 4x Maxtor SATA cards using the PDC20375 (rebranded Promise
TX2plus) in PCI slots. Each drive is cabled to 2 SATA HDs and these are
used as two groups of four for software raid using mdadm. Boot drive is
a non-raid PATA drive.
When I really hammer the sw raid that's on two of the cards it will
generate lots of these in the log -
Jul 25 17:33:42 localhost kernel: ata7: status=0x51 { DriveReady
SeekComplete Error }
Jul 25 17:33:42 localhost kernel: ata7: error=0x0c { DriveStatusError }
then I get the following on the console -
ata7: command timeout
and then the whole machine locks solid.
I can do whatever I like to the raid on the 1st four cards and it seems
rock solid.
I hear talk of 3rd and subsequent cards not being initialised by the
BIOS, and my "lspci -v" results back this up. (Please see
http://bugzilla.ubuntu.com/show_bug.cgi?id=13046 rather than cluttering
this list.)
How can I address this problem? I have just built a 2.6.10 kernel and
modules (very much a first for me) so I think I can apply patches and
try things out.
Note that I think Ubuntu has some patches from later kernels applied to
their libata to add pass through, but I don't know the status of the
sata_promise.
Regards
Ian
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