> Hi Adam, > thanks for this info. I've talked with my colleagues > in Beijing (since > I'm in Beijing this week) and we'd like you to try > disabling MSI/MSI-X > for your mpt instances. In /etc/system, add > > set mpt:mpt_enable_msi = 0 > > then regen your boot archive and reboot. >
I had already done this at Mark Johnson's request, though I had just added: set mpt:mpt_enable_msi=0 set mptsas:mptsas_enable_msi=0 ...to the /etc/system file and did a full reboot. I didn't know I had to regen the boot archive manually for those new settings to take effect: how/why would I do this? The fact the IO rate changed for me during the test indicated that the new settings had "taken". Long story short, I still had the problems after making this change though they took longer to appear. Longer story: After making the change, rebooting and starting a scrub on the pool I watched iostat for hints of trouble (i.e. error column changes). The IO rate to the disk was definately slower after this change, with individual disks never getting more than 50% busy and 2 active commands. About three hours later, the read errors/bus resets started to appear. I assume the longer delay before errors was just because the reduced IO was putting less of a strain on the driver/hardware. Let me know if you want me to refine this test or any other diagnostics that would help you out. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
