Re: PROBLEM: sata_sil24 lockups under heavy i/o
From: Robert Hancock
Date: Thu Jan 04 2007 - 18:30:28 EST
Mark Wagner wrote:
[1.] One line summary of the problem:
sata_sil24 lockups under heavy i/o
[2.] Full description of the problem/report:
I have a PCI-based sata_sil24 card. It has 4 ports. It was functioning
well with two disks attached. Once I attached 2 additional disks (for
a total of 4) and started heavy i/o (extending a software raid5 device)
the system began locking up for a few minutes at a time. After the
system recovers the disk transfer speed is reduced from UDMA/100 to
UDMA/66 or UDMA/44.
I don't think this is anything to do with the sata_sil24 driver.
Something really wierd seems to be going on with interrupts on this machine:
/proc/interrupts
CPU0
0: 20507744 XT-PIC-XT timer
1: 262 XT-PIC-XT i8042
2: 0 XT-PIC-XT cascade
5: 962175 XT-PIC-XT sym53c8xx, uhci_hcd:usb1,
uhci_hcd:usb2
7: 3678 XT-PIC-XT parport0
8: 2 XT-PIC-XT rtc
10: 9153035 XT-PIC-XT ide2, eth0
11: 30 XT-PIC-XT sym53c8xx
12: 1026266 XT-PIC-XT libata
14: 840214 XT-PIC-XT ide0
15: 569928 XT-PIC-XT ide1
NMI: 11264
LOC: 20506755
ERR: 234
MIS: 0
Output of dmesg:
...
Local APIC disabled by BIOS -- reenabling.
Found and enabled local APIC!
Hmm, you might want to try not forcing the local APIC enabled by
removing the lapic option from the kernel command line. Don't know if it
could be related though.
VP_IDE: IDE controller at PCI slot 0000:00:04.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci0000:00:04.1
ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xd808-0xd80f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
input: AT Translated Set 2 keyboard as /class/input/input0
hda: MAXTOR STM3160812A, ATA DISK drive
hda: IRQ probe failed (0xfffffef8)
hdb: WDC WD1600JB-00EVA0, ATA DISK drive
hdb: IRQ probe failed (0xfffffef8)
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: IC35L120AVVA07-0, ATA DISK drive
hdc: IRQ probe failed (0xffffbef8)
hdd: WDC WD1200JB-00GVA0, ATA DISK drive
hdd: IRQ probe failed (0xffffbef8)
These "IRQ proble failed" errors don't seem right at all.
Then:
NETDEV WATCHDOG: eth0: transmit timed out
eth0: transmit timed out, tx_status 00 status e000.
diagnostics: net 0cd8 media 8880 dma 000000a0 fifo 0000
Flags; bus-master 1, dirty 203390(14) current 203406(14)
Transmit list 01bea840 vs. c1beaac0.
So eth0's not happy.
ata2.00: exception Emask 0x0 SAct 0x7 SErr 0x0 action 0x6 frozen
ata2.00: tag 0 cmd 0x60 Emask 0x4 stat 0x40 err 0x0 (timeout)
ata2.00: tag 1 cmd 0x60 Emask 0x4 stat 0x40 err 0x0 (timeout)
ata2.00: tag 2 cmd 0x60 Emask 0x4 stat 0x40 err 0x0 (timeout)
ata2: hard resetting port
The SATA card is getting timeouts. And from your other mail:
> hda: DMA timeout error
> hda: dma timeout error: status=0x58 { DriveReady SeekComplete
DataRequest }
> ide: failed opcode was: unknown
> hda: status timeout: status=0xd0 { Busy }
> ide: failed opcode was: unknown
> hda: no DRQ after issuing MULTWRITE_EXT
Your onboard IDE controller is also timing out.. Sounds to me like some
kind of general IRQ problem, though you'd have to be losing interrupts
on IRQ 10, 12 and 14 which seems pretty extreme. Maybe a hardware
problem, are you sure you have enough power to run this many drives in
the box?
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@xxxxxxxxxxxxx
Home Page: http://www.roberthancock.com/
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