On 28.07.2013 03:08, Dieter BSD wrote:
Bob writes:
After a few hours of a database-like workload
A faster way to trigger the problem would be useful.
We're actually more interested in archive type workloads than this
database workload and we have not observed the problem with an archive
On 28-7-2013 12:23, Alexander Motin wrote:
Just recently I've made one more
attempt to get some documentation on SATA controllers from Marvell. But
even after signing NDA process again stopped since I am neither buying
thousands of their chips as vendor nor they are supporting for
end-users. The
Bob writes:
After a few hours of a database-like workload
A faster way to trigger the problem would be useful.
We're actually more interested in archive type workloads than this
database workload and we have not observed the problem with an archive
workload.
So perhaps something about the
On Thu, Jul 25, 2013, Dieter BSD dieter...@gmail.com wrote:
Sounds like FreeBSD is doing something bad to the pm, which Linux isn't
doing. Perhaps log the commands the OS sends to the controller (over the
network to a 2nd machine, or to a local disk not on a pm) and compare
BSD to Linux?
I did a little of this and superficially it does seem like there could
be differences between FreeBSD and Linux in the treatment of the
mysterious 6th port (SEMB) on the 5-port multiplier. Hopefully, the
logging you suggest will clarify the situation.
Thanks for your help.
if you have a
Hello, Bob.
You wrote 22 июля 2013 г., 18:35:57:
BB Drives: 45 * Seagate Altos ST3000NC002
BB Port Multipliers: 9 * SiI3826
BB SATA Controller: 3 * Marvell 88SX7042
I've heard, that only SiI3132 (2 port controller) works really well with
port multipliers
But we should wait answer from
On Thu, Jul 25, 2013 at 5:42 PM, Dieter BSD dieter...@gmail.com wrote:
I've heard, that only SiI3132 (2 port controller) works really well with
port multipliers
But we should wait answer from Alexander Motin (mav@) to be sure :)
I've heard the theory that you are better off matching a
On Thu, Jul 25, 2013 at 8:07 PM, Sam Fourman Jr. sfour...@gmail.com wrote:
On Thu, Jul 25, 2013 at 5:42 PM, Dieter BSD dieter...@gmail.com wrote:
I've heard, that only SiI3132 (2 port controller) works really well with
port multipliers
But we should wait answer from Alexander Motin
Hello,
I'm testing high-density SATA storage with FreeBSD 9.1-STABLE. The
hardware is:
Drives: 45 * Seagate Altos ST3000NC002
Port Multipliers: 9 * SiI3826
SATA Controller: 3 * Marvell 88SX7042
After a few hours of a database-like workload over ZFS (NCQ enable, disk
write caches disabled), a
Drives: 45 * Seagate Altos ST3000NC002
Port Multipliers: 9 * SiI3826
SATA Controller: 3 * Marvell 88SX7042
After a few hours of a database-like workload over ZFS (NCQ enable, disk
write caches disabled), a disk becomes unresponsive (we think due to a
drive firmware problem):
I have an 8.2
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