Seagate IDE tape problems

Seagate IDE tape problems

[Magnus Stenman]

Hi!

I'm having trouble with a Seagate IDE tape drive that previously
worked with 2.2.x kernels. (tape is a STT8000A travan drive)

The box has an ABIT m/b with intel 815 chipset.

On 2.2 I used the ide tape modules which let me access the drive on
ht0, but that did not work at all on 2.4.x.

I'm now using scsi_mod, ide-scsi and st and it seems
to mostly work. However, sometimes backups fail, and
I always get a couple of error messages every backup.

Any tweaks I can make, maybe at modiule load? The tape unit
worked fine under 2.2.x on an intel 440BX m/b.
I sifted thru google but it did not turn up much helpful stuff.


/magnus

Relevant(?) parts from dmesg:
----------------
Linux version 2.4.9-21 (bhcompile@stripples.devel.redhat.com) (gcc
version 2.96 20000731 (Red Hat Linux 7.1 2.\
96-98)) #1 Thu Jan 17 14:16:30 EST 2002
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev f9
PIIX4: chipset revision 17
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
hda: SAMSUNG SV2042H, ATA DISK drive
hdc: SAMSUNG SV3063H, ATA DISK drive
hdd: Seagate STT8000A, ATAPI TAPE drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
blk: queue c0350660, I/O limit 4095Mb (mask 0xffffffff)
blk: queue c0350660, I/O limit 4095Mb (mask 0xffffffff)
hda: 39865392 sectors (20411 MB) w/426KiB Cache, CHS=39549/16/63,
UDMA(100)
blk: queue c03509a4, I/O limit 4095Mb (mask 0xffffffff)
blk: queue c03509a4, I/O limit 4095Mb (mask 0xffffffff)
hdc: 59797584 sectors (30616 MB) w/426KiB Cache, CHS=59323/16/63,
UDMA(100)
SCSI subsystem driver Revision: 1.00
hdd: set_drive_speed_status: status=0x11 { SeekComplete Error }
hdd: set_drive_speed_status: error=0x04
.....end boot I believe.  the rest is after a couple of backups

scsi0 : SCSI host adapter emulation for IDE ATAPI devices
  Vendor: Seagate   Model: STT8000A          Rev: 5.02
  Type:   Sequential-Access                  ANSI SCSI revision: 02
st: Version 20010812, bufsize 32768, wrt 30720, max init. bufs 4, s/g
segs 16
Attached scsi tape st0 at scsi0, channel 0, id 0, lun 0
st0: Error with sense data: Current st09:00: sense key Illegal Request
Additional sense indicates Invalid command operation code
st0: Error with sense data: Current st09:00: sense key Illegal Request
Additional sense indicates Invalid command operation code
hdd: status error: status=0x7f { DriveReady DeviceFault SeekComplete
DataRequest CorrectedError Index Error }
hdd: status error: error=0x7f
hdd: DMA disabled
hdd: drive not ready for command
hdd: ATAPI reset complete
hdd: status error: status=0x7f { DriveReady DeviceFault SeekComplete
DataRequest CorrectedError Index Error }
hdd: status error: error=0x7f
hdd: drive not ready for command
hdd: ATAPI reset complete
st0: Error 27070000 (sugg. bt 0x20, driver bt 0x7, host bt 0x7).
st0: Error with sense data: Current st09:00: sense key Not Ready
Additional sense indicates Logical unit is in process of becoming ready
st0: Error on write filemark.
st0: Error with sense data: Current st09:00: sense key Not Ready
Additional sense indicates Logical unit is in process of becoming ready


parts from lspci -v
-------------
00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host Bridge and
Memory Controller Hub (rev 04)
        Subsystem: ABIT Computer Corp.: Unknown device 0407
        Flags: bus master, fast devsel, latency 0
        Memory at d0000000 (32-bit, prefetchable) [size=64M]
        Capabilities: [88] #09 [e104]
        Capabilities: [a0] AGP version 2.0

00:01.0 PCI bridge: Intel Corporation: Unknown device 1131 (rev 04)
(prog-if 00 [Normal decode])
        Flags: bus master, 66Mhz, fast devsel, latency 32
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=32

00:1e.0 PCI bridge: Intel Corporation 82801BAM PCI (rev 11) (prog-if 00
[Normal decode])
        Flags: bus master, fast devsel, latency 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=32
        I/O behind bridge: 0000c000-0000cfff
        Memory behind bridge: d4000000-d5ffffff

00:1f.0 ISA bridge: Intel Corporation 82801BA ISA Bridge (ICH2) (rev 11)
        Flags: bus master, medium devsel, latency 0

00:1f.1 IDE interface: Intel Corporation 82801BA IDE U100 (rev 11)
(prog-if 80 [Master])
        Subsystem: ABIT Computer Corp.: Unknown device 0407
        Flags: bus master, medium devsel, latency 0
        I/O ports at f000 [size=16]

Re: Seagate IDE tape problems

[Mikael Pettersson]

On Thu, 21 Feb 2002 20:00:24 +0100, Magnus Stenman wrote:
>I'm having trouble with a Seagate IDE tape drive that previously
>worked with 2.2.x kernels. (tape is a STT8000A travan drive)
>
>The box has an ABIT m/b with intel 815 chipset.
>
>On 2.2 I used the ide tape modules which let me access the drive on
>ht0, but that did not work at all on 2.4.x.
>
>I'm now using scsi_mod, ide-scsi and st and it seems
>to mostly work. However, sometimes backups fail, and
>I always get a couple of error messages every backup.
>
>Linux version 2.4.9-21 (bhcompile@stripples.devel.redhat.com) (gcc
>version 2.96 20000731 (Red Hat Linux 7.1 2.\

i.e., a RH7.2 update kernel, not a standard kernel

>96-98)) #1 Thu Jan 17 14:16:30 EST 2002
>Uniform Multi-Platform E-IDE driver Revision: 6.31
>ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
>PIIX4: IDE controller on PCI bus 00 dev f9
>PIIX4: chipset revision 17
>PIIX4: not 100% native mode: will probe irqs later
>    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
>    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
>hda: SAMSUNG SV2042H, ATA DISK drive
>hdc: SAMSUNG SV3063H, ATA DISK drive
>hdd: Seagate STT8000A, ATAPI TAPE drive
>...
>hdd: status error: status=0x7f { DriveReady DeviceFault SeekComplete
>DataRequest CorrectedError Index Error }
>hdd: status error: error=0x7f
>hdd: DMA disabled

FWIW, I have an identical unit (STT8000A) and it has worked
perfectly for me up to 2.4.18-pre, on 440BX and 850 chipset boxes.
I don't use scsi emulation for it, just the regular ide-tape driver,
and I don't have a hard drive on the same channel (it's hdd with hdc
being a HP CD-writer).

/Mikael

Re: Seagate IDE tape problems

[Pete Zaitcev]

> I'm having trouble with a Seagate IDE tape drive that previously
> worked with 2.2.x kernels. (tape is a STT8000A travan drive)
>[...]
> PIIX4: not 100% native mode: will probe irqs later
>     ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
>     ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
> hda: SAMSUNG SV2042H, ATA DISK drive
> hdc: SAMSUNG SV3063H, ATA DISK drive
> hdd: Seagate STT8000A, ATAPI TAPE drive

Make sure you switched DMA off with hdparm -d0.
You must find corresponding /dev/hdX, hdparm does not work
on /dev/ht0. If is a known problem (Red Hat bug #54517).

BTW, if you have trouble with Red Hat kernels, you may find
better luck trying Red Hat support. What if I did not see
your message here?

-- Pete

Re: Seagate IDE tape problems

[Magnus Stenman]

Pete Zaitcev wrote:
> 
> > I'm having trouble with a Seagate IDE tape drive that previously
> > worked with 2.2.x kernels. (tape is a STT8000A travan drive)
> >[...]
> > PIIX4: not 100% native mode: will probe irqs later
> >     ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
> >     ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
> > hda: SAMSUNG SV2042H, ATA DISK drive
> > hdc: SAMSUNG SV3063H, ATA DISK drive
> > hdd: Seagate STT8000A, ATAPI TAPE drive
> 
> Make sure you switched DMA off with hdparm -d0.
> You must find corresponding /dev/hdX, hdparm does not work
> on /dev/ht0. If is a known problem (Red Hat bug #54517).
> 
> BTW, if you have trouble with Red Hat kernels, you may find
> better luck trying Red Hat support. What if I did not see
> your message here?

Because it was related to ide-tape (which I don't use) and
it also was about the tape not working at all or with massive amounts
of errors. Which I already know, bacause I tried it.
I now run with the SCSI emulation (scsi_mod, ide-scsi etc) and it
seems to *almost* work fine...

I'll try with DMA off and see what happens, but that should slow down
the other HDD on the bus, right?

Is there any known problems with changing the DMA settings back
and forth on a live production system?


/magnus

> 
> -- Pete