Messages in this thread | | | Date | Tue, 27 Oct 1998 20:15:19 -0600 (CST) | From | "Andre M. Hedrick" <> | Subject | Re: IDE tape and SMP(UP, too) and a CD-RW for fun |
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Robert,
Both "Jens Axboe" <axboe@image.dk> and "Chris Zwilling" chris@cloudnet.com are the new guys for the IDE-CDROM and UNIFORM CDROM support. Erik Andersen has gone to "gimp" or something. These gentlement were hand picked by Erik.
Gadi,
The IDE-tape has faulted under a UP kernel 2.1.126 just like the SMP kernels. There may be something bigger at hand. Can you repeat and verify the findings.
Linux version 2.1.126 (root@Orion) (gcc version 2.8.1) #1 Mon Oct 26 22:50:59 CST 1998
AEC6210: IDE controller on PCI bus 00 dev a0 AEC6210: not 100ative mode: will probe irqs later AEC6210: ROM enabled at 0xfebf8000 ide0: BM-DMA at 0xef90-0xef97, BIOS settings: hda:pio, hdb:pio ide1: BM-DMA at 0xef98-0xef9f, BIOS settings: hdc:pio, hdd:pio PDC20246: IDE controller on PCI bus 00 dev 90 PDC20246: not 100ative mode: will probe irqs later PDC20246: ROM enabled at 0xfebd0000 ide2: BM-DMA at 0xef40-0xef47, BIOS settings: hde:DMA, hdf:pio ide3: BM-DMA at 0xef48-0xef4f, BIOS settings: hdg:pio, hdh:DMA hda: QUANTUM FIREBALL ST6.4A, ATA DISK drive hdb: QUANTUM FIREBALL ST3.2A, ATA DISK drive hdc: QUANTUM FIREBALL EL10.2A, ATA DISK drive hdd: QUANTUM FIREBALL EL10.2A, ATA DISK drive CD-ROM CDU611, ATAPI CDROM drive HP COLORADO 8GB, ATAPI TAPE drive NEC CD-ROM DRIVE:251, ATAPI CDROM drive hdh: IOMEGA ZIP 100 ATAPI, ATAPI FLOPPY drive ide0 at 0xeff0-0xeff7,0xefe6 on irq 10 ide1 at 0xefa8-0xefaf,0xefe2 on irq 10 (shared with ide0) ide2 at 0xefa0-0xefa7,0xef8e on irq 15 ide3 at 0xef80-0xef87,0xef8a on irq 15
ide-tape: ht0: I/O error, pc = a, key = 6, asc = 29, ascq = 0 ide-tape: ht0: I/O error, pc = a, key = 2, asc = 4, ascq = 1 last message repeated 109 times ide-tape: ht0: I/O error, pc = 10, key = 2, asc = 4, ascq = 1 ide-tape: Couldn't write a filemark ide-tape: ht0: I/O error, pc = 1, key = 2, asc = 4, ascq = 1
On Tue, 27 Oct 1998, Robert G. Brown wrote:
> On Mon, 26 Oct 1998, Andre M. Hedrick wrote: > > > > > Find an poke this in as an initial test........... > > > > I find that this works on 2/4 chipsets that I have to test with under SMP. > > PDC20246 appears to stablize but no DMA transefers are allowed. > > HPT343 (unreleased chipset specific) appears to stablize with Fast-ATA > > enabled, but no DMA transefers are allowed. > > Hmm, perhaps you (or the list members in general) can help me with a > problem I'm just now encountering. We have a new dual PII 450 MHz with > 512M SDRAM, an onboard AIC7895, a 9 GB Barracuda, a 6 GB IDE, and a HP > IDE-ATAPI CD (re)Writer. Although the linux kernel has support for > several IDE-ATAPI devices including the tape under discussion, so far I > see no mention of IDE CD writers. > > I had expected that it would behave like a passive CD-ROM drive > when/until I work out some way to use it. Indeed it does -- to a point. > However, after a long read or large block copy from the CD, it appears > to hang the interface. Any disk operations that requires a stat of the > CD or its co-directories in the root filesystem hang, although the > system itself stays "up" for a while. Perhaps most surprising of all, > after hanging for a while (or while "thinking" for a while) the system > then spontaneously reboots! This is most unusual to my experience -- > I've had a zillion system hangs where the system stops cold, but almost > NO hangs where the system reboots itself with no warning and no message > in many years experience. > > I'm not absolutely certain that all the problems with the system are > associated with this CD -- we also had problems with the 1.05 eepro100 > driver and the eepro that appeared to go away when we popped in a > linksys tulip -- but I've now experienced hangs followed by > deterioration and a reboot three or four times when accessing the CD ROM > in a most prosaic manner. Questions: > > Is anyone using an IDE-ATAPI CD writer in a linux system? Does anyone > know whether there is anything that would be "unsafe" about them if used > just as a CD drive? Is anyone planning to add IDE-CDR to the kernel? > Does anyone (on kernel or SMP lists) have experience with sudden reboots > and can they suggest a possible cause or fix? I don't think that this > is really an SMP vs UP issue (although I could be wrong) as I've had > trouble with both kernel flavors -- I rather think that it might be a > speed/latency problem (as CPU's get faster, deep errors tend to surface) > or one of those problems that seem to hit particular hardware > combinations for no really good reason...
Cheers, Andre Hedrick The IDE-FNG for Linux The APC UPS Specialist for Linux
http://www.dyer.vanderbilt.edu/server/udma/ http://www.dyer.vanderbilt.edu/server/apcupsd/apcupsd-3.4.9.bin.linux.tar.gz
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