Date: Sat, 23 Apr 2005 21:21:46 -0400 From: Paul Mather <paul@gromit.dlib.vt.edu> To: freebsd-current@freebsd.org Subject: Fatal TIMEOUT - WRITE_DMA errors return with ATA Mk.III Message-ID: <1114305707.71309.40.camel@zappa.Chelsea-Ct.Org>
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Since somewhere in the 5.x release cycle, my system has fallen prey to
the "TIMEOUT - WRITE_DMA" errors which result in the drive becoming
detached (which causes my geom_mirror to break and require rebuilding).
According to smartctl and disk diagnostics, there's nothing wrong with
my drives. Plus, the problem does not manifest itself under 4-STABLE.
(I'm not the only one to have reported this problem.)
Lately, I'd had success using a patch posted to freebsd-current by Ian
Dowse. The "TIMEOUT - WRITE_DMA" errors still occurred, but they
weren't fatal. I updated my kernel and world recently, and, alas, the
"TIMEOUT - WRITE_DMA" problem has returned once more:
ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=49981679
ad0: FAILURE - device detached
subdisk0: detached
ad0: detached
GEOM_MIRROR: Cannot update metadata on disk ad0 (error=5).
GEOM_MIRROR: Cannot update metadata on disk ad0 (error=6).
GEOM_MIRROR: Device raid1: provider ad0 disconnected.
GEOM_MIRROR: Request failed (error=6). ad0[WRITE(offset=3847741440, length=16384)]
Ian's patch was against the pre-ATA Mk.III regime. I doubt it is
applicable to the ATA Mk.III rewrite. :-(
Here is my system (re: ATA), FWIW:
FreeBSD 6.0-CURRENT #0: Mon Apr 18 12:25:24 EDT 2005
paul@zappa.Chelsea-Ct.Org:/usr/obj/usr/src/sys/ZAPPA
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (698.39-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x683 Stepping = 3
Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory = 536870912 (512 MB)
avail memory = 520253440 (496 MB)
[[...]]
atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x1440-0x144f at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
[[...]]
ad0: 24405MB <IBM DJNA-352500 J51OA30K> at ata0-master UDMA33
acd0: DVDR <LITE-ON DVDRW SOHW-832S/VS08> at ata0-slave UDMA33
ad2: 24405MB <IBM DJNA-352500 J51OA30K> at ata1-master UDMA33
acd1: CDRW <LG CD-RW CED-8080B/1.04> at ata1-slave PIO4
My kernel has ATAPICAM support compiled in. Here is the pciconf -vl
output for my ATA controller:
atapci0@pci0:7:1: class=0x010180 card=0x00000000 chip=0x71118086 rev=0x01 hdr=0x00
vendor = 'Intel Corporation'
device = '82371AB/EB/MB PIIX4/4E/4M IDE Controller'
class = mass storage
subclass = ATA
It is in a Dell Dimension XPS T700r.
Is there any way to up the number of retries to, say, 5, to see if this
helps?
Oh, well, welcome back "gmirror rebuild..." :-)
Cheers,
Paul.
--
e-mail: paul@gromit.dlib.vt.edu
"Without music to decorate it, time is just a bunch of boring production
deadlines or dates by which bills must be paid."
--- Frank Vincent Zappa
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