SCSI Bus Parity errors with all Kernels after 2.4.26

I have a machine configuration with runs fine under a variety of older kernels and fails under a variety of newer ones. I was hoping someone could dircet me to a person who would like to look further into this.

SCSI Configuration -
Symbios Logic SYM8951U
Quantum Viking II 4.5GB
IBM DNES-30917OW 9.0GB
ASUS SC875 Symbios Logic
IOMEGA ZOP 100
Pioneer CD-ROM DR U065

Works under:

   Various RedHat 4, 5, 6 and 7 systems
   RedHat 8.0 running 2.4.18
   RedHat 8.0 running 2.4.20
   Debian 2.2 running 2.4.5

Fails under
Redhat 9.0 running 2.4.26
Suse 9.1 running 2.6.5
Debian 3.0

It fails with a SCSI bus error, either crashing entirely or refusing to mount one or more file systems on the second disk.the second disk. Looks like something has changed, and not for the better for this configuration.

More information avaiable on request. I am interested in helping to trace this down.

Please cc: my personal e-mail in response, since I do not subscribe.

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I have a machine conf. which runs fine under a variety of older kernels and fails under a variety of newer ones. I was hoping someone could direct me to a person who would like to look further into this.

What are the exact error messages? CC linux-scsi@xxxxxxxxxxxxxxx

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I have a machine conf. which runs fine under a variety of older kernels and fails under a variety of newer ones. I was hoping someone could direct me to a person who would like to look further into this.

...

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What are the exact error messages? CC linux-scsi@xxxxxxxxxxxxxxx

Under SuSE 9.1 the output during module loading is as follows:
-------------------------------------------------------
SCSI subsystem initialized
PCI: Found IRQ 5 for device 0000:00:0a.0
sym0: <875> rev 0x4 at pci 0000:00:0a.0 irq 5
sym0: Symbios NVRAM, ID 7, Fast-20, SE, parity checking
sym0: open drain IRQ line driver, using on-chip SRAM
sym0: using LOAD/STORE-based firmware.
sym0: SCSI BUS has been reset.
scsi0 : sym-2.1.18i
Vendor: IOMEGA Model: ZIP 100 Rev: J.03
Type: Direct-Access ANSI SCSI revision: 02
sym0:5:0:phase change 6-7 6@3738cf84 resid=4.
Attached scsi removable disk sda at scsi0, channel 0, id 5, lin0
Attached scsi generic sg0 at scsi0, channel 0, id 5, lun 0, type 0
Vendor: PIONEER Model: CD-ROM DR-U065 Rev: 1.05
Type: CD-ROM ANSI SCSI revision: 02
sym0:6: FAST-20 SCSI 19.2 MB/s ST (52.0 ns, offset 16)
Uniform CD-ROM driver Revision: 3.20
Attached scsi generic sg1 at scsi0, channel 0, id 6, lun 0, type 5
PCI: Found IRQ 11 for device 0000:00:0c.0
sym1: <895> rev 0x1 at pci 0000:00:0c.0 irq 11
sym1: Symbios NVRAM, ID 7, Fast-40, LVD, parity checking
sym1: open drain IRQ line driver, using on-chip SRAM
sym1: using LOAD/STORE-based firmware.
sym1: SCSI BUS has been reset.
scsi1 : sym-2.1.18i
Vendor: QUANTUM Model: VIKING II 4.5WLS Rev: 4110
Type: Direct-Access ANSI SCSI revision: 02
sym1:0:0: tagged command queuind enabled, command queue depth 16.
sym1:0: FAST-40 WIDE SCSI 80.0 MB/s ST (25.0 ns, offset 31)
SCSI device sdb: 8910423 512-byte hdwr sectors (4562 MB)
SCSI device sdb: drive cache: write back
sdb: sdb1 sdb2
Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0
Attached scsi generic sg2 at scsi1, channel 0, id 0, lun 0, type 0
Vendor: IBM Model: DNES-309170W Rev: SAH0
Type: Direct-Access ANSI SCSI revision: 03
sym1:6:0: tagged command queuing enabled, command queue depth 16.
sym1:6: FAST-40 WIDE SCSI 80.0 MB/s ST (25.0 ns, offset 30)
SCSI: device sdc: 17916240 512-byte hdwr sectors (9173 MB)
SCSI device sdc: drive cache: write back
sdc: sdc1 sdc2
Attached scsi disk sdc at scsi1, channel 0, id 6, lun 0
Attached scsi generic sg3 at scsi1, channel 0, id 6, lun 0, type 0
sym0: SCSI parity error detected: SCR1=1 DBC=50000000 SBCL=0
sym0:15: ERROR (a0:0) (8-0-0) (0/5/0) @ (mem cd800020:cd800020).
sym0: regdump: da 00 00 05 47 00 0f 0e 00 08 00 00 80 00 0f 02 ff ff ff 00 02 ff ff ff.
sym0: PCI STATUS = 0x20000
sym0: SCSI BUS reset detected.
sym0: SCSI BUS has been reset.
sym1: SCSI parity error detected: SCR1=1 DBC=50000000 SBCL=0
sym1: SCSI phase error fixup: CCB already dequeued.
sym1:15: ERROR (81:0) (8-0-0) (0/7/0) @ (scripta 48:a9100786).
sym1: script cmd = f31c0004
sym1: regdump: da 00 00 07 47 00 0f 0a 00 08 86 00 80 00 0f 02 28 71 01 37 02 ff ff ff.
sym1: SCSI BUS reset detected.
sym1: SCSI BUS has been reset.
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Please cc: [email protected] since I do not subscribe. Note that I will be out of town for the next 5 days.

Bob Nelson