Re: sata_mv, io stucks

[Mark Lord <liml@rtr.ca>]

Artem Bokhan wrote:
> Any thought?
> 
> Artem Bokhan пишет:
>> I try to simulate random reads  with "sysbench --test=fileio 
>> --num-threads=16 --max-requests=9999999 --max-time=60 --init-rng=on 
>> --file-num=16 --file-fsync-freq=0 --file-test-mode=rndrd 
>> --file-total-size=30G run"
>>
>> Two marvell controllers, 16 disks, software raid10, IO stucks on 
>> different disks, kernel 2.6.26.5.
>> With default ubuntu's 8.04 2.6.24 kernel the problem can not be repeated
>>
>>
>> [  289.851609] ata11.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 
>> 0x6 frozen
>> [  289.851695] ata11.00: cmd 61/08:00:60:1e:bf/00:00:01:00:00/40 tag 0 
>> ncq 4096 out
>> [  289.851697]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 
>> 0x4 (timeout)
>> [  289.851774] ata11.00: status: { DRDY }
>> [  289.851834] ata11: hard resetting link
>> [  290.649259] ata11: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
>> [  290.749239] ata11.00: max_sectors limited to 256 for NCQ
>> [  290.809189] ata11.00: max_sectors limited to 256 for NCQ
>> [  290.809194] ata11.00: configured for UDMA/133
>> [  290.809200] ata11: EH complete
>> [  290.809242] sd 10:0:0:0: [sdk] 1953525168 512-byte hardware sectors 
>> (1000205 MB)
>> [  290.809258] sd 10:0:0:0: [sdk] Write Protect is off
>> [  290.809263] sd 10:0:0:0: [sdk] Mode Sense: 00 3a 00 00
>> [  290.809286] sd 10:0:0:0: [sdk] Write cache: enabled, read cache: 
>> enabled, doesn't support DPO or FUA
...

I've just returned here from a month holiday in Italy,
and I'll have a look at this and other sata_mv issues
next week or so.

Cheers