Messages in this thread | | | Date | Wed, 04 Nov 2009 02:05:06 +0100 | From | Andre Tomt <> | Subject | Re: 2.6.31-rc9 kernel BUG and mvsas |
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Andre Tomt wrote: > Jeff Garzik wrote: >> On 09/09/2009 12:30 PM, Thomas Fjellstrom wrote: >>> No errors on that disk. Other than the one above, and its more of a >>> warning. >>> However, I just rebooted to add some extra drives, thinking >>> everything was >>> working a little better now that I've updated to 2.6.31-rc9, I'm >>> treated to >>> the following two messages right after boot (and a system lockup to >>> boot): > > Jeff & Co, > > Just chiming in with a "me too" comment. > > Identical issues with the AOC-SASLP-MV8 card with 8 Seagate Barracuda > 7200.11 1.5TB drives using the mvsas driver. Creating a md raid array > seems to trigger it nearly instantly, however other loads do not trigger > it as fast (if at all, only tested briefly with paralell dd). > > Not sure if its related in any way, but I also noticed that with > parallell dd read on all ports, the card/driver tops out at 600MB/s even > though the card is in a northbridge connected slot running in x4 mode. > Only the first 4-5 ports run at nearly full speed, while the rest barely > gets to read any data at all. To illustrate, it looks sort of like this > in iostat -m: > sda 122 > sdb 122 > sbc 120 > sdd 121 > sde 100 > sdf 10 > sdg 5 > sdh 5 > > Starting to think this driver has some issues with concurrency.. The > other controllers have no issues saturating all their ports, even if > they are on a south bridge connected slot.
Err, saturating all the disks. I'm not expecting 300MB/s*8, even though it would be very cool 8)
> > Same disks/setup works just fine on AHCI and sata_mv controllers on the > same computer, easily pushes 8-900MB/s with md software raid5/6 (Yipes!) >
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