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SubjectAIC7xxx errors in 2.2.19 but not in 2.2.18
Hello

I am getting SCSI errors with an onboard Adaptec AIC-7890/1 Ultra2, but
only under very heavy disk load and only under kernel 2.2.19. These errors
do not appear under 2.2.18.

The system I have is a dual PIII-450 with 6 disks attached to the controller.
All disks are put together in SW-Raid5 array with one configured as hot
spare.

The errors under 2.2.19 look as follows:

scsi : aborting command due to timeout : pid 52414, scsi0, channel 0, id 0, lun 0 Read (10) 00 00 ba f3 76 00 00 18 00
scsi : aborting command due to timeout : pid 52416, scsi0, channel 0, id 1, lun 0 Write (10) 00 00 ba f4 0e 00 00 80 00
(scsi0:0:1:0) SCSISIGI 0x4, SEQADDR 0x77, SSTAT0 0x0, SSTAT1 0x2
(scsi0:0:1:0) SG_CACHEPTR 0x8, SSTAT2 0x40, STCNT 0x5fc
scsi : aborting command due to timeout : pid 52417, scsi0, channel 0, id 1, lun 0 Write (10) 00 00 ba f4 8e 00 00 80 00
scsi : aborting command due to timeout : pid 52419, scsi0, channel 0, id 2, lun 0 Write (10) 00 00 ba f4 0e 00 00 80 00
scsi : aborting command due to timeout : pid 52420, scsi0, channel 0, id 2, lun 0 Write (10) 00 00 ba f4 8e 00 00 80 00
scsi : aborting command due to timeout : pid 52422, scsi0, channel 0, id 3, lun 0 Write (10) 00 00 ba f4 0e 00 00 80 00
scsi : aborting command due to timeout : pid 52423, scsi0, channel 0, id 3, lun 0 Write (10) 00 00 ba f4 8e 00 00 80 00
scsi : aborting command due to timeout : pid 52425, scsi0, channel 0, id 4, lun 0 Write (10) 00 00 1c ed 06 00 00 08 00
scsi : aborting command due to timeout : pid 52426, scsi0, channel 0, id 4, lun 0 Write (10) 00 00 ba f3 8e 00 00 80 00
scsi : aborting command due to timeout : pid 52427, scsi0, channel 0, id 0, lun 0 Write (10) 00 00 ba f3 8e 00 00 80 00
scsi : aborting command due to timeout : pid 52428, scsi0, channel 0, id 1, lun 0 Write (10) 00 00 ba f5 0e 00 00 80 00
scsi : aborting command due to timeout : pid 52429, scsi0, channel 0, id 3, lun 0 Write (10) 00 00 ba f5 0e 00 00 80 00
scsi : aborting command due to timeout : pid 52430, scsi0, channel 0, id 2, lun 0 Write (10) 00 00 ba f5 0e 00 00 80 00
scsi : aborting command due to timeout : pid 52431, scsi0, channel 0, id 4, lun 0 Write (10) 00 00 ba f4 0e 00 00 80 00
scsi : aborting command due to timeout : pid 52432, scsi0, channel 0, id 0, lun 0 Write (10) 00 00 ba f4 0e 00 00 80 00
SCSI host 0 abort (pid 52416) timed out - resetting
SCSI bus is being reset for host 0 channel 0.

wait_on_bh, CPU 1:
irq: 0 [0 0]
bh: 1 [1 0]
<[c010aead]> <[c0199ffc]> <[c019ab9b]> <[c01a3860]> <6>(scsi0:0:4:0) Synchronous at 80.0 Mbyte/sec, offset 31.
(scsi0:0:2:0) Synchronous at 80.0 Mbyte/sec, offset 63.
(scsi0:0:3:0) Synchronous at 80.0 Mbyte/sec, offset 31.
(scsi0:0:1:0) Synchronous at 80.0 Mbyte/sec, offset 31.
(scsi0:0:0:0) Synchronous at 80.0 Mbyte/sec, offset 31.
scsi : aborting command due to timeout : pid 53513, scsi0, channel 0, id 1, lun 0 Write (10) 00 00 bb 4c f6 00 00 80 00
(scsi0:0:1:0) SCSISIGI 0x4, SEQADDR 0x62, SSTAT0 0x0, SSTAT1 0x2
(scsi0:0:1:0) SG_CACHEPTR 0x3c, SSTAT2 0x40, STCNT 0x3fc
scsi : aborting command due to timeout : pid 53514, scsi0, channel 0, id 2, lun 0 Write (10) 00 00 bb 4a f6 00 00 80 00
scsi : aborting command due to timeout : pid 53515, scsi0, channel 0, id 3, lun 0 Write (10) 00 00 bb 4c f6 00 00 80 00
scsi : aborting command due to timeout : pid 53516, scsi0, channel 0, id 4, lun 0 Write (10) 00 00 bb 4a f6 00 00 80 00
scsi : aborting command due to timeout : pid 53517, scsi0, channel 0, id 0, lun 0 Write (10) 00 00 bb 4d 76 00 00 40 00
scsi : aborting command due to timeout : pid 53518, scsi0, channel 0, id 1, lun 0 Write (10) 00 00 bb 4d 76 00 00 40 00
scsi : aborting command due to timeout : pid 53519, scsi0, channel 0, id 3, lun 0 Write (10) 00 00 bb 4d 76 00 00 40 00
scsi : aborting command due to timeout : pid 53520, scsi0, channel 0, id 2, lun 0 Write (10) 00 00 ba fb 86 00 00 08 00
scsi : aborting command due to timeout : pid 53521, scsi0, channel 0, id 4, lun 0 Write (10) 00 00 ba fb 86 00 00 08 00
scsi : aborting command due to timeout : pid 53522, scsi0, channel 0, id 0, lun 0 Write (10) 00 00 bb 4d be 00 00 30 00
scsi : aborting command due to timeout : pid 53523, scsi0, channel 0, id 1, lun 0 Write (10) 00 00 bb 4d be 00 00 30 00
scsi : aborting command due to timeout : pid 53524, scsi0, channel 0, id 3, lun 0 Write (10) 00 00 bb 4d be 00 00 30 00
scsi : aborting command due to timeout : pid 53525, scsi0, channel 0, id 4, lun 0 Write (10) 00 00 bb 4b 76 00 00 80 00
scsi : aborting command due to timeout : pid 53526, scsi0, channel 0, id 2, lun 0 Write (10) 00 00 bb 4b 76 00 00 80 00
scsi : aborting command due to timeout : pid 53527, scsi0, channel 0, id 0, lun 0 Write (10) 00 00 bb 4b f6 00 00 80 00
SCSI host 0 abort (pid 53513) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
(scsi0:0:4:0) Synchronous at 80.0 Mbyte/sec, offset 31.
(scsi0:0:3:0) Synchronous at 80.0 Mbyte/sec, offset 31.
(scsi0:0:2:0) Synchronous at 80.0 Mbyte/sec, offset 63.
(scsi0:0:1:0) Synchronous at 80.0 Mbyte/sec, offset 31.
(scsi0:0:0:0) Synchronous at 80.0 Mbyte/sec, offset 31.

>From Alan's changelog I see that there where changes in the AIC7xxx code.
Any idea what is wrong here?

Thanks,
Holger

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