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. That
On Wed, Jun 23, 2010 at 10:14 AM, Jeff Bacon ba...@walleyesoftware.com 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
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
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's stuck.
On Wed, Jun 23, 2010 at 2:43 PM, Jeff Bacon ba...@walleyesoftware.com 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
On Fri, Jun 18, 2010 at 9:53 AM, Jeff Bacon ba...@twinight.org 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
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 chassis
