On Wed, Jun 23, 2010 at 2:43 PM, Jeff Bacon wrote:
>> >> Swapping the 9211-4i for a MegaRAID ELP (mega_sas) improves
>> >> performance by 30-40% instantly and there are no hangs anymore so
> I'm
>> >> guessing it's something related to the mpt_sas driver.
>
> Wait. The mpt_sas driver by defaul
> I'm using iozone to get some performance numbers and I/O hangs when
> it's doing the writing phase.
>
> This pool has:
>
> 18 x 2TB SAS disks as 9 data mirrors
> 2 x 32GB X-25E as log mirror
> 1 x 160GB X-160M as cache
>
> iostat shows "2" I/O operations active and SSDs at 100% busy when
> it'
Gack, that's the same message we're seeing with the mpt controller with
SATA drives. I've never seen it with a SAS drive before .
Has anyone noticed a trend of 2TB SATA drives en-masse not working well
with the LSI SASx28/x36 expander chips? I can seemingly reproduce it on
demand - hook > 4 2TB d
On Wed, Jun 23, 2010 at 10:14 AM, Jeff Bacon wrote:
>> > Have I missed any changes/updates in the situation?
>>
>> I'm been getting very bad performance out of a LSI 9211-4i card
>> (mpt_sas) with Seagate Constellation 2TB SAS disks, SM SC846E1 and
>> Intel X-25E/M SSDs. Long story short, I/O will
> > Have I missed any changes/updates in the situation?
>
> I'm been getting very bad performance out of a LSI 9211-4i card
> (mpt_sas) with Seagate Constellation 2TB SAS disks, SM SC846E1 and
> Intel X-25E/M SSDs. Long story short, I/O will hang for over 1 minute
> at random under heavy load.
Hm
On Fri, Jun 18, 2010 at 9:53 AM, Jeff Bacon wrote:
> I know that this has been well-discussed already, but it's been a few months
> - WD caviars with mpt/mpt_sas generating lots of retryable read errors,
> spitting out lots of beloved " Log info 3108 received for target"
> messages, and jus
I know that this has been well-discussed already, but it's been a few months -
WD caviars with mpt/mpt_sas generating lots of retryable read errors, spitting
out lots of beloved " Log info 3108 received for target" messages, and just
generally not working right.
(SM 836EL1 and 836TQ chassi
