Re: sata_mv, io stucks

[Artem Bokhan <aptem@ngs.ru>]

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
>
>
> lspci:
>
> 05:01.0 SCSI storage controller: Marvell Technology Group Ltd. 
> MV88SX6081 8-port SATA II PCI-X Controller (rev 09)
>        Subsystem: Marvell Technology Group Ltd. Unknown device 11ab
>        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- 
> ParErr+ Stepping- SERR+ FastB2B+
>        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium 
> >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>        Latency: 32, Cache Line Size: 32 bytes
>        Interrupt: pin A routed to IRQ 24
>        Region 0: Memory at d8200000 (64-bit, non-prefetchable) [size=1M]
>        Region 2: I/O ports at 3000 [size=256]
>        Capabilities: [40] Power Management version 2
>                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>        Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ 
> Queue=0/0 Enable-
>                Address: 0000000000000000  Data: 0000
>        Capabilities: [60] PCI-X non-bridge device
>                Command: DPERE- ERO- RBC=512 OST=4
>                Status: Dev=05:01.0 64bit+ 133MHz+ SCD- USC- DC=simple 
> DMMRBC=512 DMOST=4 DMCRS=8 RSCEM- 266MHz- 533MHz-
>
> 05:02.0 SCSI storage controller: Marvell Technology Group Ltd. 
> MV88SX6081 8-port SATA II PCI-X Controller (rev 09)
>        Subsystem: Marvell Technology Group Ltd. Unknown device 11ab
>        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- 
> ParErr+ Stepping- SERR+ FastB2B+
>        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium 
> >TAbort- <TAbort- <MAbort- >SERR- <PERR-
>        Latency: 32, Cache Line Size: 32 bytes
>        Interrupt: pin A routed to IRQ 28
>        Region 0: Memory at d8300000 (64-bit, non-prefetchable) [size=1M]
>        Region 2: I/O ports at 3400 [size=256]
>        Region 3: [virtual] Memory at d8800000 (32-bit, 
> non-prefetchable) [size=4M]
>        [virtual] Expansion ROM at d9000000 [disabled] [size=4M]
>        Capabilities: [40] Power Management version 2
>                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
> PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>        Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ 
> Queue=0/0 Enable-
>                Address: 0000000000000000  Data: 0000
>        Capabilities: [60] PCI-X non-bridge device
>                Command: DPERE- ERO- RBC=512 OST=4
>                Status: Dev=05:02.0 64bit+ 133MHz+ SCD- USC- DC=simple 
> DMMRBC=512 DMOST=4 DMCRS=8 RSCEM- 266MHz- 533MHz-
>
> -- 
> To unsubscribe from this list: send the line "unsubscribe linux-ide" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html