Messages in this thread | | | Date | Sun, 14 Oct 2007 19:02:12 -0500 | From | "Mark Weber" <> | Subject | Re: hdparm standby timeout not working for WD raptors? |
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On 10/14/07, Mark Lord <lkml@rtr.ca> wrote: > 1. How are you forcing the drives into standby?
hdparm -y
> 2. Have you reproduced this with a stock kernel.org kernel yet?
No; maybe later this week.
> One possibility is that these drives may be the kind that > generate a "spurious" interrupt when they spin-down via the timer, > and perhaps libata is "processing" that interrupt and sending > additional command(s) that then wake the drive up again immediately. > > To rule this out, you could try using drivers/ide for a moment or two, > and see if the same problem persists with those drives. > > You could also try dumping /proc/interrupts in conjunction with "hdparm -S1", > and we can compare that with a "known good" system. > > Something like this: > > hdparm -B255 /dev/sda > hdparm -S1 /dev/sda > cat /proc/interrupts > sleep 6 > cat /proc/interrupts
Here's the log for the second suggestion:
narf ~ # hdparm -B255 /dev/sda
/dev/sda: setting Advanced Power Management level to disabled HDIO_DRIVE_CMD failed: Input/output error
narf ~ # hdparm -S1 /dev/sda
/dev/sda: setting standby to 1 (5 seconds) narf ~ # cat /proc/interrupts CPU0 0: 2268 IO-APIC-edge timer 1: 2 IO-APIC-edge i8042 8: 5 IO-APIC-edge rtc 9: 0 IO-APIC-fasteoi acpi 12: 4 IO-APIC-edge i8042 14: 206827 IO-APIC-edge ide0 16: 350813 IO-APIC-fasteoi sata_promise, uhci_hcd:usb5 17: 39596029 IO-APIC-fasteoi eth0 18: 0 IO-APIC-fasteoi uhci_hcd:usb4 19: 728947 IO-APIC-fasteoi libata, uhci_hcd:usb3 20: 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2 NMI: 0 LOC: 2736793 ERR: 0 MIS: 0 narf ~ # sleep 6 narf ~ # cat /proc/interrupts CPU0 0: 2268 IO-APIC-edge timer 1: 2 IO-APIC-edge i8042 8: 5 IO-APIC-edge rtc 9: 0 IO-APIC-fasteoi acpi 12: 4 IO-APIC-edge i8042 14: 206828 IO-APIC-edge ide0 16: 350813 IO-APIC-fasteoi sata_promise, uhci_hcd:usb5 17: 39596069 IO-APIC-fasteoi eth0 18: 0 IO-APIC-fasteoi uhci_hcd:usb4 19: 728947 IO-APIC-fasteoi libata, uhci_hcd:usb3 20: 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2 NMI: 0 LOC: 2736881 ERR: 0 MIS: 0 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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