Hello
Any news on the mvsas driver for this card? the MV8 is a ridiculously
attractive card, and proper linux support would be a boon to many people
who want to use it on their fileservers.
On 13/11/2009 8:59 μμ, Thomas Fjellstrom wrote:
On Fri November 13 2009, Kristleifur Daðason wrote:
On Wed, Nov 11, 2009 at 6:51 PM, Thomas Fjellstrom<tfjellstrom@xxxxxxx>
wrote:
On Wed November 11 2009, Richard Scobie wrote:
Thomas Fjellstrom wrote:
Thats the problem he was trying to get away from. the MV8
controller likes to offline disks when a few smart commands arrive.
at least with the main kernel drivers. But then the main kernel
mvsas drivers decide to give up if you even attempt to start a raid
array on them. The controller locks up and you have to reboot. Most
of the time a reboot even fails when it tries to sync the block
devices, so a hard reset is in order.
OK, I did not know the Marvell controller also has a problem with
smartmontools.
Given the state of the in kernel drivers, its probably a driver issue.
Thanks for the replies, all.
I'll bet it's the driver - it doesn't feel quite right that a random
external command can easily drop drives off the controller, be it
smartmontools or mdadm.
Thomas, I tried sending a private email to Andy Yan. I haven't got a
reply, which kind of isn't surprising in this world of spam. Can I ask
you for a referral - could you send him an email asking him if I can
have the patch and how to test it?
He seems to be a busy guy, but I've CCed him on this. The actual driver I
got is a full copy of the driver, builds out of tree.
He hasn't said I can't send the package to anyone, but I'll wait a little
while before doing so, he might pop up saying not to give it out.
All I can say is: it works well enough for me*.
For a $120 8 port sata card, it really does the trick. I was so glad when I
didn't have to get several crappy 2-4 port jmicron cards.
Also, to list-dwellers: I'd greatly appreciate further tips on PCIe SAS
HBAs.
Thanks!
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* Performance (to me) is outstanding, or at least it will be once the write
back stuff is fixed up, and the io controller stuff is also fixed up, but as
is right now in 2.6.31, its "good enough". Might not get the absolute insane
400-500MB/s I saw with the controller originally, but I do get a good
100-230MB/s off my 5 drive md raid5 array (512KB chunk). I find things that
used to take 30 seconds or more on my old array now happen in a few seconds.
Right now writes are rather bad (60-100MB/s) but that I assume is the write
back stuff, which should hopefully be fixed in 32.
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