David Chinner wrote:
Folks,
After updating an x86_64 machine from 2.6.21 to 2.6.22-rc6 and
fighting off the where-the-fuck-did-my-serial-console-go blues
(legacy_serial.force), I finally discovered why the damn thing
wasn't booting - the machine was sitting there in a loop outputting
"hda: lost interrupt" over and over again during hardware
discovery (hda = dvd drive).
It doesn't happen on every boot - more boots hung than failed,
though, while I was trying to work out where my serial port
went and get some work done.
Since I've had the console operative, the boot hangs are
basically like:
ESB2: IDE controller at PCI slot 0000:00:1f.1
ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 20 (level, low) -> IRQ20
ESB2: chipset revision 9
ESB2: not 100% native mode: will probe irqs later
ide0: DM-DMA at 0x50a0-0x50a7, BIOS settings: hda:DMA, hdb:pio
ide1: DM-DMA at 0x50a8-0x50af, BIOS settings: hda:pio, hdb:pio
Probing IDE interface ide0...
hda: probing with STATUS(0xa0) instead of ALTSTATUS(0x58)
hda: <some ctrl char>, ATAPI UNKNOWN (type 31) drive
hdb: probing with STATUS(0xb0) instead of ALTSTATUS(0x00)
hdb: probing with STATUS(0xa1) instead of ALTSTATUS(0x51)
hdb: <some ctrl char>, ATAPI UNKNOWN (type 31) drive
hda: set_drive_speed_status: status=0x58 { DriveReady SeekComplete DataRequest }
hda: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error }
hda: set_drive_speed_status: error=0x04 { AbortedCommand }
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
What is the behavior under libata?
If you see timeouts/etc. there too, it might be an interrupt routing or
hardware problem.
Jeff
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