Hi,
On a freshly booted machine with LSISAS1068 controller attached to
SATA disks, the ioerr_cnt in /sys/block/<disk>/device/ is 0x1.
The machine also has 2 other SATA disks attached directly to the on-board
ServerWorks controller and the ioerr_cnt for those disks is 0x0; which
is what is expected.
There does not seem to be any problem with the machine and I think this
is just a false alarm. I am able to reproduce this on any other machine
with the same SAS controller.
I have not tested with any SAS controller other than LSISAS1068.
I just want to emphasise that the hardware is not broken.
I have pasted the relevant parts from dmesg which has some debug logs.
My question is: Is this a known problem?
While this is not egregious, it does confuse the users/applications that
monitor that counter.
Thanks!
Abhijit
---- More Info ----
root@xxxxxxxxxxxxx:~# uname -a
Linux 2.6.26.5 #3 SMP Mon Oct 6 17:40:07 PDT 2008 i686 GNU/Linux
root@xxxxxxxxxxxxx:~# cat /proc/mpt/ioc0/summary
ioc0: LSISAS1068 B0, FwRev=010b0000h, Ports=1, MaxQ=511, IRQ=223
root@xxxxxxxxxxxxx:~# cat /proc/scsi/scsi
Attached devices:
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: WDC WD2500YD-01N Rev: 10.0
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi3 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: WDC WD2500YD-01N Rev: 10.0
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 01 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 02 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 03 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 04 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 05 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 06 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 07 Lun: 00
Vendor: ATA Model: WDC WD5000KS-00M Rev: 2E07
Type: Direct-Access ANSI SCSI revision: 05
root@xxxxxxxxxxxxx:~# cat /sys/block/sd{a,b,c,d,e,f,g,h,i,j}/device/ioerr_cnt
0x0
0x0
0x1
0x1
0x1
0x1
0x1
0x1
0x1
0x1
root@xxxxxxxxxxxxx:~# dmesg
node: 172.24.196.34
--snip--
[ 3.937448] libata version 3.00 loaded.
[ 3.938449] sata_svw 0000:01:0e.0: version 2.3
[ 3.938449] ACPI: PCI Interrupt 0000:01:0e.0[A] -> GSI 11 (level, low) -> IRQ 11
[ 3.938449] scsi0 : sata_svw
[ 3.938449] scsi1 : sata_svw
[ 3.938449] scsi2 : sata_svw
[ 3.938449] scsi3 : sata_svw
[ 3.938449] ata1: SATA max UDMA/133 mmio m8192@0xfcafe000 port 0xfcafe000 irq 11
[ 3.938449] ata2: SATA max UDMA/133 mmio m8192@0xfcafe000 port 0xfcafe100 irq 11
[ 3.938449] ata3: SATA max UDMA/133 mmio m8192@0xfcafe000 port 0xfcafe200 irq 11
[ 3.938449] ata4: SATA max UDMA/133 mmio m8192@0xfcafe000 port 0xfcafe300 irq 11
[ 4.252893] ata1: SATA link down (SStatus 4 SControl 300)
[ 4.568160] ata2: SATA link down (SStatus 4 SControl 300)
[ 4.872744] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 4.875844] ata3.00: ATA-7: WDC WD2500YD-01NVB1, 10.02E01, max UDMA/133
[ 4.875846] ata3.00: 490234752 sectors, multi 16: LBA48 NCQ (depth 0/1)
[ 4.878836] ata3.00: configured for UDMA/133
[ 5.183485] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 5.186579] ata4.00: ATA-7: WDC WD2500YD-01NVB1, 10.02E01, max UDMA/133
[ 5.186581] ata4.00: 490234752 sectors, multi 16: LBA48 NCQ (depth 0/1)
[ 5.189576] ata4.00: configured for UDMA/133
[ 5.189576] scsi 2:0:0:0: Direct-Access ATA WDC WD2500YD-01N 10.0 PQ: 0 ANSI: 5
[ 5.190064] sd 2:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB)
[ 5.190064] sd 2:0:0:0: [sda] Write Protect is off
[ 5.190064] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 5.190064] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.190064] sd 2:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB)
[ 5.190064] sd 2:0:0:0: [sda] Write Protect is off
[ 5.190064] sd 2:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 5.190064] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.190064] sda: sda1 sda2 sda3
[ 5.203206] sd 2:0:0:0: [sda] Attached SCSI disk
[ 5.203206] sd 2:0:0:0: Attached scsi generic sg0 type 0
[ 5.203206] scsi 3:0:0:0: Direct-Access ATA WDC WD2500YD-01N 10.0 PQ: 0 ANSI: 5
[ 5.203224] sd 3:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB)
[ 5.203224] sd 3:0:0:0: [sdb] Write Protect is off
[ 5.203224] sd 3:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[ 5.203224] sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.203224] sd 3:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB)
[ 5.203224] sd 3:0:0:0: [sdb] Write Protect is off
[ 5.203224] sd 3:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[ 5.203224] sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5.203224] sdb: sdb1 sdb2
[ 5.219144] sd 3:0:0:0: [sdb] Attached SCSI disk
[ 5.219144] sd 3:0:0:0: Attached scsi generic sg1 type 0
[ 5.219144] ACPI: PCI Interrupt 0000:01:0e.1[A] -> GSI 11 (level, low) -> IRQ 11
[ 5.219144] modprobe used greatest stack depth: 5260 bytes left
[ 5.223143] Fusion MPT base driver 3.04.06
[ 5.223143] Copyright (c) 1999-2007 LSI Corporation
[ 5.231375] Fusion MPT SAS Host driver 3.04.06
[ 5.231375] ACPI: PCI Interrupt 0000:02:01.0[A] -> GSI 20 (level, low) -> IRQ 20
[ 5.231375] mptbase: ioc0: Initiating bringup
[ 5.506672] ioc0: LSISAS1068 B0: Capabilities={Initiator}
[ 5.506705] mptbase: ioc0: PCI-MSI enabled
[ 11.887067] scsi4 : ioc0: LSISAS1068 B0, FwRev=010b0000h, Ports=1, MaxQ=511, IRQ=223
[ 11.925533] scsi 4:0:0:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 11.925851] scsi 4:0:0:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 11.925857] mptscsih: ioc0: fw_channel = 0, fw_id = 23
[ 11.925858] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 11.925860] mptscsih: ioc0: tag = 188, transfer_count = 0, sc->result = 00000002
[ 11.925863] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 11.925866] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 11.926546] sd 4:0:0:0: [sdc] 976773168 512-byte hardware sectors (500108 MB)
[ 11.927635] sd 4:0:0:0: [sdc] Write Protect is off
[ 11.927637] sd 4:0:0:0: [sdc] Mode Sense: 67 00 00 08
[ 11.929830] sd 4:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.930655] sd 4:0:0:0: [sdc] 976773168 512-byte hardware sectors (500108 MB)
[ 11.931747] sd 4:0:0:0: [sdc] Write Protect is off
[ 11.931749] sd 4:0:0:0: [sdc] Mode Sense: 67 00 00 08
[ 11.933920] sd 4:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.933924] sdc: sdc1 sdc2 sdc3
[ 11.952064] sd 4:0:0:0: [sdc] Attached SCSI disk
[ 11.952064] sd 4:0:0:0: Attached scsi generic sg2 type 0
[ 11.955063] scsi 4:0:1:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 11.955599] scsi 4:0:1:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 11.955599] mptscsih: ioc0: fw_channel = 0, fw_id = 26
[ 11.955599] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 11.955599] mptscsih: ioc0: tag = 203, transfer_count = 0, sc->result = 00000002
[ 11.955599] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 11.955599] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 11.956122] sd 4:0:1:0: [sdd] 976773168 512-byte hardware sectors (500108 MB)
[ 11.957320] sd 4:0:1:0: [sdd] Write Protect is off
[ 11.957322] sd 4:0:1:0: [sdd] Mode Sense: 67 00 00 08
[ 11.959697] sd 4:0:1:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.960041] sd 4:0:1:0: [sdd] 976773168 512-byte hardware sectors (500108 MB)
[ 11.961136] sd 4:0:1:0: [sdd] Write Protect is off
[ 11.961138] sd 4:0:1:0: [sdd] Mode Sense: 67 00 00 08
[ 11.963300] sd 4:0:1:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.963302] sdd: sdd1 sdd2
[ 11.979616] sd 4:0:1:0: [sdd] Attached SCSI disk
[ 11.979616] sd 4:0:1:0: Attached scsi generic sg3 type 0
[ 11.981992] scsi 4:0:2:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 11.982308] scsi 4:0:2:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 11.982313] mptscsih: ioc0: fw_channel = 0, fw_id = 20
[ 11.982314] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 11.982316] mptscsih: ioc0: tag = 218, transfer_count = 0, sc->result = 00000002
[ 11.982319] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 11.982321] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 11.983026] sd 4:0:2:0: [sde] 976773168 512-byte hardware sectors (500108 MB)
[ 11.984116] sd 4:0:2:0: [sde] Write Protect is off
[ 11.984118] sd 4:0:2:0: [sde] Mode Sense: 67 00 00 08
[ 11.986614] sd 4:0:2:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.986948] sd 4:0:2:0: [sde] 976773168 512-byte hardware sectors (500108 MB)
[ 11.988125] sd 4:0:2:0: [sde] Write Protect is off
[ 11.988127] sd 4:0:2:0: [sde] Mode Sense: 67 00 00 08
[ 11.990471] sd 4:0:2:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.990473] sde: sde1 sde2
[ 12.007692] sd 4:0:2:0: [sde] Attached SCSI disk
[ 12.007692] sd 4:0:2:0: Attached scsi generic sg4 type 0
[ 12.009935] scsi 4:0:3:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 12.010252] scsi 4:0:3:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 12.010256] mptscsih: ioc0: fw_channel = 0, fw_id = 19
[ 12.010258] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 12.010260] mptscsih: ioc0: tag = 233, transfer_count = 0, sc->result = 00000002
[ 12.010262] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 12.010264] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 12.011143] sd 4:0:3:0: [sdf] 976773168 512-byte hardware sectors (500108 MB)
[ 12.012232] sd 4:0:3:0: [sdf] Write Protect is off
[ 12.012234] sd 4:0:3:0: [sdf] Mode Sense: 67 00 00 08
[ 12.014408] sd 4:0:3:0: [sdf] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.014957] sd 4:0:3:0: [sdf] 976773168 512-byte hardware sectors (500108 MB)
[ 12.016045] sd 4:0:3:0: [sdf] Write Protect is off
[ 12.016047] sd 4:0:3:0: [sdf] Mode Sense: 67 00 00 08
[ 12.018218] sd 4:0:3:0: [sdf] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.018220] sdf: sdf1 sdf2
[ 12.032695] sd 4:0:3:0: [sdf] Attached SCSI disk
[ 12.032695] sd 4:0:3:0: Attached scsi generic sg5 type 0
[ 12.036315] scsi 4:0:4:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 12.036632] scsi 4:0:4:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 12.036636] mptscsih: ioc0: fw_channel = 0, fw_id = 21
[ 12.036638] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 12.036640] mptscsih: ioc0: tag = 248, transfer_count = 0, sc->result = 00000002
[ 12.036642] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 12.036645] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 12.037173] sd 4:0:4:0: [sdg] 976773168 512-byte hardware sectors (500108 MB)
[ 12.038242] sd 4:0:4:0: [sdg] Write Protect is off
[ 12.038244] sd 4:0:4:0: [sdg] Mode Sense: 67 00 00 08
[ 12.040407] sd 4:0:4:0: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.040942] sd 4:0:4:0: [sdg] 976773168 512-byte hardware sectors (500108 MB)
[ 12.042016] sd 4:0:4:0: [sdg] Write Protect is off
[ 12.042018] sd 4:0:4:0: [sdg] Mode Sense: 67 00 00 08
[ 12.044170] sd 4:0:4:0: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.044172] sdg: sdg1 sdg2
[ 12.059692] sd 4:0:4:0: [sdg] Attached SCSI disk
[ 12.059692] sd 4:0:4:0: Attached scsi generic sg6 type 0
[ 12.062691] scsi 4:0:5:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 12.063246] scsi 4:0:5:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 12.063246] mptscsih: ioc0: fw_channel = 0, fw_id = 25
[ 12.063246] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 12.063246] mptscsih: ioc0: tag = 263, transfer_count = 0, sc->result = 00000002
[ 12.063246] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 12.063246] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 12.063934] sd 4:0:5:0: [sdh] 976773168 512-byte hardware sectors (500108 MB)
[ 12.064980] sd 4:0:5:0: [sdh] Write Protect is off
[ 12.064980] sd 4:0:5:0: [sdh] Mode Sense: 67 00 00 08
[ 12.067671] sd 4:0:5:0: [sdh] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.068354] sd 4:0:5:0: [sdh] 976773168 512-byte hardware sectors (500108 MB)
[ 12.069352] sd 4:0:5:0: [sdh] Write Protect is off
[ 12.069352] sd 4:0:5:0: [sdh] Mode Sense: 67 00 00 08
[ 12.071602] sd 4:0:5:0: [sdh] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.071604] sdh: sdh1 sdh2
[ 12.091294] sd 4:0:5:0: [sdh] Attached SCSI disk
[ 12.091294] sd 4:0:5:0: Attached scsi generic sg7 type 0
[ 12.093626] scsi 4:0:6:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 12.093942] scsi 4:0:6:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 12.093947] mptscsih: ioc0: fw_channel = 0, fw_id = 22
[ 12.093948] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 12.093950] mptscsih: ioc0: tag = 278, transfer_count = 0, sc->result = 00000002
[ 12.093953] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 12.093955] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 12.094641] sd 4:0:6:0: [sdi] 976773168 512-byte hardware sectors (500108 MB)
[ 12.095713] sd 4:0:6:0: [sdi] Write Protect is off
[ 12.095715] sd 4:0:6:0: [sdi] Mode Sense: 67 00 00 08
[ 12.097879] sd 4:0:6:0: [sdi] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.098419] sd 4:0:6:0: [sdi] 976773168 512-byte hardware sectors (500108 MB)
[ 12.099398] sd 4:0:6:0: [sdi] Write Protect is off
[ 12.099398] sd 4:0:6:0: [sdi] Mode Sense: 67 00 00 08
[ 12.101972] sd 4:0:6:0: [sdi] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.101974] sdi: sdi1 sdi2
[ 12.120285] sd 4:0:6:0: [sdi] Attached SCSI disk
[ 12.120285] sd 4:0:6:0: Attached scsi generic sg8 type 0
[ 12.123507] scsi 4:0:7:0: Direct-Access ATA WDC WD5000KS-00M 2E07 PQ: 0 ANSI: 5
[ 12.123823] scsi 4:0:7:0: CDB: cdb[0]=0x1a: 1a 00 19 00 40 00
[ 12.123827] mptscsih: ioc0: fw_channel = 0, fw_id = 18
[ 12.123829] mptscsih: ioc0: request_len = 64, underflow = 0, resid = 64
[ 12.123831] mptscsih: ioc0: tag = 293, transfer_count = 0, sc->result = 00000002
[ 12.123834] mptscsih: ioc0: iocstatus = success (0x0000), scsi_status = check condition (0x02), scsi_state = (0x01)
[ 12.123836] mptscsih: ioc0: [sense_key,asc,ascq]: [0x06,0x29,0x00]
[ 12.124689] sd 4:0:7:0: [sdj] 976773168 512-byte hardware sectors (500108 MB)
[ 12.125762] sd 4:0:7:0: [sdj] Write Protect is off
[ 12.125764] sd 4:0:7:0: [sdj] Mode Sense: 67 00 00 08
[ 12.127926] sd 4:0:7:0: [sdj] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.128455] sd 4:0:7:0: [sdj] 976773168 512-byte hardware sectors (500108 MB)
[ 12.129522] sd 4:0:7:0: [sdj] Write Protect is off
[ 12.129524] sd 4:0:7:0: [sdj] Mode Sense: 67 00 00 08
[ 12.131723] sd 4:0:7:0: [sdj] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 12.131725] sdj: sdj1
[ 12.145182] sd 4:0:7:0: [sdj] Attached SCSI disk
[ 12.145182] sd 4:0:7:0: Attached scsi generic sg9 type 0
--snip--
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