Using latest firmware, yes. I'm using the driver included
in
kernel, not 3ware's - I'm unsure if this is 'right' or not
What does "modinfo 3w-9xxx" give you?
The driver for release 9.2.1.1 is 2.26.03.019[fw]. If you're not running that version, grab the driver source and rebuild, add the module to your tree and create a new initrd. If you need some help in doing that, just let me know.
- be fairly curious on your experience in this matter
(since
you seem to have a fair bit of 3ware experience/knowledge).
I haven't deployed but one (1) system with a 3Ware Escalade 9500S, so my exposure to the 9500S line has been limited. I have deployed countless Escalade 6000-8000 series products though.
Thanks will look into that. Unsure if if related to this problem - bugzilla link given by Joshua looks like a fairly likely culprit.
Yeah, it looks like it is probably unrelated to the 3Ware card. But still, take the time to read the whitepaper on performance with the 9000 series -- and the couple of tweaks they recommend.
The Linux kernel VM/buffer defaults _never_ assume there is an on-board storage intelligence that can command and queue a lot closer to the hardware than it can. ;->