Anyone know what this CAM error at boot means? CAM_REQ_CMP_ERR

[ericr]

I've got an Adaptec 2200S RAID controller in a server running 5.3-RELEASE
with a GENERIC kernel.  (We're going to upgrade Real Soon Now, but I've got
to keep things going until then.)

It's been running fine for years, but a few days ago, it started taking
about 3 times longer than usual to boot.

The error is:

(probe0:aacp0:0:0:0): Data Overrun
(probe0:aacp0:0:0:0): Retrying Command

followed a bit later by:

(probe30:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe30:umass-sim0:0:0:0): Retrying Command

The system seems to run ok once it boots, but taking forever to boot
concerns me.  Anyone know what this error means, and what I should do about
it?

Here's the dmesg from boot -v showing the controller, and the above CAM
related error:

...
aac0: <Adaptec SCSI RAID 2200S> mem 0xf8000000-0xfbffffff irq 48 at device
1.0 on pci3
aac0: [FAST]
aac0: Unknown processor 100MHz, 48MB cache memory, optional battery not
installed
aac0: Kernel 4.2-0, Build 8205, S/N ba904a
aac0: Supported
Options=31d7e<CLUSTERS,WCACHE,DATA64,HOSTTIME,RAID50,WINDOW4GB,SOFTERR,SGMAP64,ALARM,NONDASD>
aacp0: <SCSI Passthrough Bus> on aac0
aacp1: <SCSI Passthrough Bus> on aac0
...
aacd0: <RAID 5> on aac0
aacd0: 419994MB (860149632 sectors)
GEOM: new disk aacd0
[0] f:80 typ:165 s(CHS):0/1/1 e(CHS):1023/254/63 s:63 l:860136102
[1] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
[2] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
[3] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
GEOM: Configure aacd0s1, start 32256 length 440389684224 end 440389716479
GEOM: Configure aacd0s1a, start 0 length 26843545600 end 26843545599
GEOM: Configure aacd0s1b, start 26843545600 length 4294967296 end
31138512895
GEOM: Configure aacd0s1c, start 0 length 440389684224 end 440389684223
GEOM: Configure aacd0s1d, start 31138512896 length 137438953472 end
168577466367
GEOM: Configure aacd0s1e, start 168577466368 length 4294967296 end
172872433663
GEOM: Configure aacd0s1f, start 172872433664 length 267517250560 end
440389684223
(probe0:aacp0:0:0:0): Data Overrun
(probe0:aacp0:0:0:0): Retrying Command
(probe5:aacp0:0:5:0): Data Overrun
(probe5:aacp0:0:5:0): Retrying Command
(probe4:aacp0:0:4:0): Data Overrun
(probe4:aacp0:0:4:0): Retrying Command
(probe3:aacp0:0:3:0): Data Overrun
(probe3:aacp0:0:3:0): Retrying Command
(probe2:aacp0:0:2:0): Data Overrun
(probe2:aacp0:0:2:0): Retrying Command
(probe0:aacp0:0:0:0): Data Overrun
(probe0:aacp0:0:0:0): Retrying Command
(probe5:aacp0:0:5:0): Data Overrun
(probe5:aacp0:0:5:0): Retrying Command
(probe4:aacp0:0:4:0): Data Overrun
(probe4:aacp0:0:4:0): Retrying Command
(probe3:aacp0:0:3:0): Data Overrun
(probe3:aacp0:0:3:0): Retrying Command
(probe2:aacp0:0:2:0): Data Overrun
(probe2:aacp0:0:2:0): Retrying Command
(probe0:aacp0:0:0:0): Data Overrun
(probe0:aacp0:0:0:0): Retrying Command
(probe5:aacp0:0:5:0): Data Overrun
(probe5:aacp0:0:5:0): Retrying Command
(probe4:aacp0:0:4:0): Data Overrun
(probe4:aacp0:0:4:0): Retrying Command
(probe3:aacp0:0:3:0): Data Overrun
(probe3:aacp0:0:3:0): Retrying Command
(probe2:aacp0:0:2:0): Data Overrun
(probe2:aacp0:0:2:0): Retrying Command
(probe0:aacp0:0:0:0): Data Overrun
(probe0:aacp0:0:0:0): Retrying Command
(probe5:aacp0:0:5:0): Data Overrun
(probe5:aacp0:0:5:0): Retrying Command
(probe4:aacp0:0:4:0): Data Overrun
(probe4:aacp0:0:4:0): Retrying Command
(probe3:aacp0:0:3:0): Data Overrun
(probe3:aacp0:0:3:0): Retrying Command
(probe2:aacp0:0:2:0): Data Overrun
(probe2:aacp0:0:2:0): Retrying Command
(probe0:aacp0:0:0:0): Data Overrun
(probe0:aacp0:0:0:0): error 5
(probe0:aacp0:0:0:0): Retries Exausted
(probe5:aacp0:0:5:0): Data Overrun
(probe5:aacp0:0:5:0): error 5
(probe5:aacp0:0:5:0): Retries Exausted
(probe4:aacp0:0:4:0): Data Overrun
(probe4:aacp0:0:4:0): error 5
(probe4:aacp0:0:4:0): Retries Exausted
(probe3:aacp0:0:3:0): Data Overrun
(probe3:aacp0:0:3:0): error 5
(probe3:aacp0:0:3:0): Retries Exausted
(probe2:aacp0:0:2:0): Data Overrun
(probe2:aacp0:0:2:0): error 5
(probe2:aacp0:0:2:0): Retries Exausted
(probe30:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe30:umass-sim0:0:0:0): Retrying Command
(probe30:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe30:umass-sim0:0:0:0): Retrying Command
(probe30:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe30:umass-sim0:0:0:0): Retrying Command
(probe30:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe30:umass-sim0:0:0:0): Retrying Command
(probe30:umass-sim0:0:0:0): Request completed with CAM_REQ_CMP_ERR
(probe30:umass-sim0:0:0:0): error 5
(probe30:umass-sim0:0:0:0): Retries Exausted
pass0 at aacp0 bus 0 target 0 lun 0
pass0: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass1 at aacp0 bus 0 target 2 lun 0
pass1: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass1: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass2 at aacp0 bus 0 target 3 lun 0
pass2: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass2: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass3 at aacp0 bus 0 target 4 lun 0
pass3: <SEAGATE ST3146807LC 0008> Fixed unknown SCSI-3 device
pass3: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass4 at aacp0 bus 0 target 5 lun 0
pass4: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass4: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass5 at umass-sim0 bus 0 target 0 lun 0
pass5: <WD 3200JB External 0108> Fixed Direct Access SCSI-0 device
pass5: 1.000MB/s transfers
pass0 at aacp0 bus 0 target 0 lun 0
pass0: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass1 at aacp0 bus 0 target 2 lun 0
pass1: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass1: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass2 at aacp0 bus 0 target 3 lun 0
pass2: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass2: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass3 at aacp0 bus 0 target 4 lun 0
pass3: <SEAGATE ST3146807LC 0008> Fixed unknown SCSI-3 device
pass3: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
pass4 at aacp0 bus 0 target 5 lun 0
pass4: <SEAGATE ST3146807LC 0007> Fixed unknown SCSI-3 device
pass4: 160.000MB/s transfers (80.000MHz, offset 63, 16bit)
GEOM: new disk da0
...
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <WD 3200JB External 0108> Fixed Direct Access SCSI-0 device
da0: 1.000MB/s transfers
da0: 305245MB (625142448 512 byte sectors: 255H 63S/T 38913C)
[0] f:80 typ:165 s(CHS):0/1/1 e(CHS):1023/254/63 s:63 l:625137282
[1] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
[2] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
[3] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 l:0
GEOM: Configure da0s1, start 32256 length 320070288384 end 320070320639
GEOM: Configure da0s1c, start 0 length 320070288384 end 320070288383
GEOM: Configure da0s1d, start 0 length 320070288384 end 320070288383
Mounting root from ufs:/dev/aacd0s1a
...

Thanks!

- ericr