Steve Brooks wrote: > On Fri, 22 Jun 2012, m.roth at 5-cent.us wrote: >> Steve Brooks wrote: >>> >>> I have a SATA PCIe 6Gbps 4 port controller card made by Startech. The >>> kernel (Linux viz1 2.6.32-220.4.1.el6.x86_64) sees it as >>> >>> Marvell Technology Group Ltd. 88SE9123 >>> >>> I use it to provide extra SATA ports to a raid system. >>> The HD's are all "WD2003FYYS" and so run at 3Gbps on the 6Gbps >>> controller. However I am seeing lots of instances of errors like this >>> >>> Jun 22 03:13:23 viz1 kernel: ata13.00: exception Emask 0x10 SAct 0x4 >>> SErr >>> 0x400000 action 0x6 frozen >>> Jun 22 03:13:23 viz1 kernel: ata13.00: irq_stat 0x08000000, interface >>> fatal error >>> Jun 22 03:13:23 viz1 kernel: ata13: SError: { Handshk } >>> Jun 22 03:13:23 viz1 kernel: ata13.00: failed command: WRITE FPDMA >>> QUEUED >>> Jun 22 03:13:23 viz1 kernel: ata13.00: cmd >>> 61/e8:10:98:05:1b/01:00:66:00:00/40 tag 2 ncq 249856 out >>> Jun 22 03:13:23 viz1 kernel: ata13.00: status: { DRDY } >>> Jun 22 03:13:23 viz1 kernel: ata13: hard resetting link >> <snip> >> Crap. First question: what make & model are the drives on it? If they're >> Caviar Green, you're hosed. WD, and *maybe* Seagate as well, disabled a >> certain function you used to be able to set on the lower cost, >> consumer-grade models (in '09, I believe), and so when a server >> controller is trying to do i/o, and has a problem, in server-grade drives, >> it gives up after something like 6 sec, and does error handling, I * >> think* to other sectors. The consumer ones, on the other hand, keep trying >> for 1? 2? *minutes*; the disabled function allowed a used to tell it to >> give up in a shorter time. Meanwhile, a hardware controller will, as I said, >> have fits. >> >> mark "you'd think I just spent months dealing with this...." >> > > As mentioned in the original post the drives are all "WD2003FYYS". I am Missed the original post; sorry. > convinced it has nothing to do with TLER enabled on the WD drives as we Thanks, that was the acronym I was trying to remember. > run hundreds of them using linux mdadm raid on motherboard SATA > controllers with no problems in the last eight or so years. This appears > to be specific to the SATA PCIe 6Gbps 4 port controller card made by > Startech. There are four other HD's (WD2003FYYS) in the machine running on > an onboard "Intel Corporation Patsburg 6-Port SATA AHCI Controller" with > no problems. I also see those are "enterprise" drives, not consumer grade, which implies that they ought to work. It still looks to me as though it's timing out, which I'd think is a function of the RAID card. You might see if it has any firmware configuration options. mark