On Wed, 13 Dec 2006 10:46:49 +0000, James Ogden <james@???> wrote:
> Hello
>
> This is with a new drive, new motherboard, SATA II. The machine seems
> to be fine until it gets loaded my a xen guest domain, at which point
> disk access stalled - presumably because this is happening:
>
> Dec 13 10:36:03 [kernel] ata3: handling error/timeout
> Dec 13 10:36:03 [kernel] ata3: port reset, p_is 1 is 4 pis 1 cmd c017 tf
> 50 ss 123 se 0
> Dec 13 10:36:03 [kernel] ata3: status=0x50 { DriveReady SeekComplete }
> Dec 13 10:36:03 [kernel] sda: Current: sense key=0x0
> Dec 13 10:36:03 [kernel] ASC=0x0 ASCQ=0x0
> Dec 13 10:36:33 [kernel] ata3: handling error/timeout
> Dec 13 10:36:33 [kernel] ata3: port reset, p_is 1 is 4 pis 1 cmd c017 tf
> 50 ss 123 se 0
> Dec 13 10:36:33 [kernel] ata3: status=0x50 { DriveReady SeekComplete }
> Dec 13 10:36:33 [kernel] sda: Current: sense key=0x0
> Dec 13 10:36:33 [kernel] ASC=0x0 ASCQ=0x0
>
> Does anyone have any good ideas? (For example, it's a Intel 6300 DC -
> is there a way to turn off one of the processors to test?)
>
It's a bit traumatic to reply to your own message, but for the sake of the
archive :)
If you can't win the game, change the rules - the AHCI SATA driver in 2.6.16
is borked, but there isn't currently an official xen patch for 2.6.18.
Fortunately,
http://overlays.gentoo.org/dev/aross/browser has an overlay
for my system with an alpha ebuild for xen-sources-2.6.18 which is much better
(I can still crash the system, but only with 3 guest domains and the host all
caning the disk - it's fine in normal usage)
You can disable SMP with the nosmp kernel parameter, but that didn't help
James
