On Sat, Jul 28, 2012 at 5:10 AM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: > 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? The motherboard is an Asus P8768-V Pro/Gen3 and has full MSI support, but the cards are labeled "Syba SiI 3114 PCI to 4 Port Sata 150" and don't support MSI. > 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. At one point the system was mapping the interrupt to IRQ#17, instead of 19, but it still failed. I haven't tried moving the cards to different slots or anything but, IIRC, it only has two PCI slots. I also have yet to try upgrading the BIOS of the mobo or updating the card firmware. I was hoping to have a better idea of what was going wrong before going down that route. I also wonder if it the problem could be kernel or libata related. (which is why I'm asking in this forum). -- Stirling Westrup Programmer, Entrepreneur. https://www.linkedin.com/e/fpf/77228 http://www.linkedin.com/in/swestrup http://technaut.livejournal.com http://sourceforge.net/users/stirlingwestrup -- 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
