On 7/27/2012 9:20 PM, Stirling Westrup wrote: > On Fri, Jul 27, 2012 at 6:14 PM, Stirling Westrup <swestrup@xxxxxxxxx> wrote: >> On Fri, Jul 27, 2012 at 1:24 PM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: >>> On 7/27/2012 11:40 AM, Stirling Westrup wrote: >>> >>>> I recently purchased a large system for use as a backup server for a >>>> pair of small businesses. It contains a boot drive plus 10 more >>>> storage drives. Despite having three onboard SATA controllers, the >>>> motherboard didn't have enough SATA connectors for all the drives, so >>>> I installed a pair of identical SiI3114 raid cards to handle the extra >>>> connections. It has a Sandy Bridge chipset, so I installed a 3.2 >>>> kernel. >>>> >>>> # uname -a >>>> Linux ttt 3.2.0-0.bpo.2-amd64 #1 SMP Fri Jun 29 20:42:29 UTC 2012 >>>> x86_64 GNU/Linux >>> ... >>>> Okay, enough background. Here's the issue: I had no trouble building >>>> and sync'ing the first array, but when I try to sync the second array, >>>> I always get the following dmesg an hour or so into the process: >>>> >>>> irq 19: nobody cared (try booting with the "irqpoll" option) >>>> [ 346.120572] Pid: 1100, comm: md1_resync Not tainted >>> 3.2.0-0.bpo.2-amd64 #1 >>>> [ 346.120573] Call Trace: >>>> ... >>>> [ 346.120697] handlers: >>>> [ 346.120699] [<ffffffffa00479e0>] ahci_interrupt >>>> [ 346.120702] [<ffffffffa02f17ec>] sil_interrupt >>>> [ 346.120703] Disabling IRQ #19 >>>> [ 346.122145] sched: RT throttling activated >>> ... >>>> From this point onward syncing drops to a tiny fraction of its >>>> previous speed. I've tried booting with 'irqpoll' as the error message >>>> suggests, but it has had no effect. I'm really not sure if there is a >>>> conflict between my two SiI3114's or between the SiI's and the Marvell >>>> controller (although I've never had an issue with Marvell in the >>>> past), nor how to go about diagnosing or fixing this. I'll include a >>>> full dmesg dump below, as well as my currently loaded modules. If >>>> anyone wants any further info, just ask. >>> >>> Have you tried irqbalance to spread the interrupts across cores/cache >>> domains? https://irqbalance.org/documentation.html >>> >> >> Thanks for the tip! I installed irqbalance and rebooted the system, >> and everything has been running smoothly for the last two hours. I'll >> let everyone know tomorrow if it actually finished the full 20-hour >> resync without incidence. > Alas, all it did was delay the IRQ error by a few hours. Does anyone > else have any ideas about how I could tackle this? Try irqpoll and irqbalance together. Also, which motherboard is this, exact make/model please. May be a BIOS issue. Doesn't seem to be using MSIs. If the mobo and cards all support MSIs, enabling that may fix this as well. Also what make/model are the SiI3114 cards? PCIe or PCI? Have you tried different slot combinations? Moving one card to a different slot may get it routed to PCI INTB instead of INTA. That may get it mapped to something other than IRQ#19. Updating the 3114 boards to their latest firmware is worth a shot, if not there already. -- Stan -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
