On Tue, Mar 27, 2012 at 10:21 AM, Kenneth D. Merry <ken_at_freebsd.org> wrote: > On Tue, Mar 27, 2012 at 23:50:31 +1030, Matt Thyer wrote: >> On 26 March 2012 23:55, Gary Palmer <gpalmer_at_freebsd.org> wrote: >> >> It's painful to take this system back to r230921 due to intolerance for >> downtime from it's users so I'd like to investigate the cause of the >> problem and try patches/sysctls/whatever first. >> >> The drives I'm using are 7 x WDC WD20EARS-00M (3 are AB50, 4 are AB51) and >> 1 x WD20EARX-00P AB51. >> The WD20EARX-00P AB51 is a SATA 3 (6 Gbps) drive but the others are all >> SATA 2 (3 Gbps). >> >> I know the driver doesn't like mixed speeds in IR mode but I'm flashed with >> IT firmware as ZFS is doing my RAID (raidz2). >> >> I was having problems with the WD20EARX-00P AB51 drive being faulted by ZFS >> until I updated the firmware to 11 and now ZFS is happy (I've also done a >> full extended drive SMART test and the drive is fine). >> >> So what do people suggest (before reversion to r230921) ? > > If you're going to prove that it's the new LSI driver, you will probably > have to go back to the old driver. > > You don't have to back out your entire tree, you can just back out the > driver itself if you have an SVN tree. You can go into sys/dev/mps and do: > > svn update -r 230714 > > And then edit sys/conf/files and comment out these three lines: > > dev/mps/mps_config.c optional mps > dev/mps/mps_mapping.c optional mps > dev/mps/mps_sas_lsi.c optional mps > > Then you should be able to rebuild your kernel with the old driver and see > if the problem occurs again. > > Ken > -- > Kenneth Merry > ken_at_FreeBSD.ORG I'm having an issue with the new mps driver myself http://lists.freebsd.org/pipermail/freebsd-scsi/2012-February/005243.html , so I have a patch handy for downgrading also if it helps anyone. It includes the sys/conf/files removals also. http://nitrology.com/mps_downgrade-fbsd8.diff JasonReceived on Tue Mar 27 2012 - 16:27:20 UTC
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