Re: [Aoetools-discuss] ggaoed and multiple NICs

[Lars E. D. J. <la...@dc...>]

> # Statistics for device aoestorage1-90-2-2000r6
> read_cnt: 5235045
> read_bytes: 21442744320
> read_time: 9663.53
> write_cnt: 0
> write_bytes: 0
> write_time: 0
> other_cnt: 304
> other_time: 0.0212562
> io_slots: 1117752
> io_runs: 96727
> queue_length: 786443640
> queue_stall: 1753
> queue_over: 0
> ata_err: 0
> proto_err: 0
>
> I can get a very low "queue_stall" number by setting "merge-delay =
> 0.002" in ggaoed.conf, if not setting merge-delay queue_stall is
> extremely high.

> And "queue_over" is 0 when setting "queue-length = 1024". If I set
> queue-length to 64 I get extremely high queue_over number...

# Statistics for device aoestorage1-90-2-2000r6
read_cnt: 16720474
read_bytes: 72916687360
read_time: 30601.7
write_cnt: 2101809
write_bytes: 8609009664
write_time: 8550.47
other_cnt: 1125131
other_time: 24.4878
io_slots: 4457695
io_runs: 397886
queue_length: 2795517659
queue_stall: 6826
queue_over: 0
ata_err: 46
proto_err: 0


I get some ata errors with an exported RAID6 array, but none for
another RAID10 array on the same controller.

Controller is:
Adapter: 0
Product Name: Supermicro SMC2108
Memory: 512MB
BBU: Present
Serial No:


What can cause ata_err ? (connected to several initiators all
reporting ata error):
aoe: ata error cmd=24h stat=41h from e90.2
end_request: I/O error, dev etherd/e90.2, sector 3898431360
Buffer I/O error on device etherd/e90.2, logical block 487303920
aoe: ata error cmd=24h stat=41h from e90.2
end_request: I/O error, dev etherd/e90.2, sector 3898431360
Buffer I/O error on device etherd/e90.2, logical block 487303920
...

I've checked the physical raid array on the target but this have no
errors, and all disks are good.

Can merge-delay or queue-length cause ata errors?