Messages in this thread | | | Date | Thu, 27 Oct 2005 16:30:07 +0200 | From | Jens Axboe <> | Subject | Re: Status of Marvell SATA driver (was Re: Trying latest sata_mv - and getting freeze) |
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On Thu, Oct 27 2005, Eugene Crosser wrote: > Jens Axboe wrote: > > >>>>My hardware is SMP Supermicro with 6 disks on > >>>>Marvell MV88SX6081 8-port SATA II PCI-X Controller (rev 03) > >>>>and the sata_mv.c is version 0.25 dated 22 Oct 2005 > >>>> > >>>>The thing works with "old" mvsata340 driver, but the "new" kernel with > >>>>your driver freezes when it starts to probe disks. Even Magic SysRq > >>>>does not work. The last lines I see on screen are like this: > >>>> > >>>>sata_mv version 0.25 > >>>>ACPI: PCI Interrupt 0000:02:03.0[A] -> GSI 56 (level, low) -> IRQ 185 > >>>>sata_mv(0000:02:03.0) 32 slots 8 ports unknown mode IRQ via MSI > >>>>ata1: SATA max UDMA/133 cmd 0x0 ctl 0xF8C22120 bmdma 0x0 irq 185 > >>>>ata2: .... <same things> 0xF8C24120 ... > >>>>... > >>>>ata8: .... <same thing> 0xF8C38120 ... > >>>>ATA: abnormal status 0x80 on port 0xF8C2211C > >>>>... <five more lines identical to the above> > >>>>ata1: dev 0 ATA-7, max UDMA/133, 781422768 sectors: LBA48 > >>>> > >>>>- and at this point it freezes hard. > >>>>Any suggestions for me? Any information I can collect to help > >>>>troubleshooting? > >> > >>[...] > >> > >>>In the meantime, try turning off SMP and seeing if that makes a > >>>difference. There still might be a problem with the spinlocks and if so > >>>it should go away in uniprocessor mode. > >> > >>'nosmp' makes no difference. > > > > > > Booting with nosmp isn't enough, you need to compile the kernel with > > CONFIG_SMP turned off. Otherwise the spinlocks will still be used and > > could cause a hard hang. > > Yeah, that was it! It boots with the kernel compiled for UP. > (did not yet have a chance to check how it works). > Any chance that somebody competent would fix the driver for SMP?
Try booting with nmi_watchdog=1 with the SMP kernel, that should trigger a watchdog oops when it hard hangs on the spinlock. Then it should be trivial to fix.
-- Jens Axboe
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