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excess timeouts accessing pci-sata card both ports

DISCUSSION [email protected] 2 participants 5 messages Jan 24, 2008 – Mar 16, 2008 1 message not in the archive libata

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[email protected]

author
#0 lore raw

Hello.

The scenario:
PCI bus with 2 cards (sata_via)
Each card has 2 SATA ports connected.
Each disk does 40MB/s in hdparm -t read test.

First card has the sda and sdb
Second card has the sdc and sdd
verified by watching the led blinking on the card

ok - accessing two ports at same time but each port on different card:
cat /dev/sda > /dev/null & cat /dev/sdc > /dev/null

problem - accessing two ports at same time and both ports on same card:
cat /dev/sda > /dev/null & cat /dev/sdb > /dev/null

side effect of the problem:
due to heavy traffic on one port the reset of the other port fails with timeout and port is disabled

logged error command at the initial problem (is it DMA read ext and DMA write log?):
ata2.00: exception Emask 0x2 SAct 0x0 SErr 0x3000400 action 0x2 frozen ata2.00: cmd 25/00:68:b8:83:13/00:01:00:00:00/e0 tag 0 cdb 0x0 data 184320 in

         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x6 (timeout)

ata2: port is slow to respond, please be patient (Status 0xd0)

ata2.00: exception Emask 0x2 SAct 0x0 SErr 0x3000400 action 0x2 frozen ata2.00: cmd c8/00:60:70:50:08/00:00:00:00:00/e0 tag 0 cdb 0x0 data 49152 in

         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x6 (timeout)

ata2: port is slow to respond, please be patient (Status 0xd0)

logged EH sequence failure:
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: device not ready (errno=-16), forcing hardreset
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: COMRESET failed (errno=-16)
ata2: reset failed, giving up
ata2.00: disabled
ata2: EH complete
sd 1:0:0:0: [sdb] Result: hostbyte=0x04 driverbyte=0x00

tried does not work:
- multiply the ATA_TMOUT values by 10 and later by 100 against vanilla
- increase retry counters

some lines from dmesg below
libata version 2.21 loaded.
sata_via 0000:00:0d.0: version 2.3
ACPI: PCI Interrupt 0000:00:0d.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11 sata_via 0000:00:0d.0: routed to hard irq line 11
scsi0 : sata_via
scsi1 : sata_via
scsi2 : sata_via
ata1: SATA max UDMA/133 cmd 0x0001b800 ctl 0x0001b80a bmdma 0x0001a400 irq 11
ata2: SATA max UDMA/133 cmd 0x0001b400 ctl 0x0001b40a bmdma 0x0001a408 irq 11
ata3: PATA max UDMA/133 cmd 0x0001b000 ctl 0x0001b00a bmdma 0x0001a410 irq 11
ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata1.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133
ata1.00: 490234752 sectors, multi 16: LBA48 NCQ (not used)
ata1.00: configured for UDMA/133
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata2.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133
ata2.00: 490234752 sectors, multi 16: LBA48 NCQ (not used)
ata2.00: configured for UDMA/133
scsi 0:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
sd 0:0:0:0: Attached scsi generic sg0 type 0
scsi 1:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0 ANSI: 5
sd 1:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB)
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB)
sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdb: sdb1 sdb2 sdb3
sd 1:0:0:0: [sdb] Attached SCSI disk
sd 1:0:0:0: Attached scsi generic sg1 type 0
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 10
PCI: setting IRQ 10 as level-triggered
ACPI: PCI Interrupt 0000:00:0e.0[A] -> Link [LNKB] -> GSI 10 (level, low) -> IRQ 10 sata_via 0000:00:0e.0: routed to hard irq line 10
scsi3 : sata_via
scsi4 : sata_via
scsi5 : sata_via
ata4: SATA max UDMA/133 cmd 0x00019800 ctl 0x0001980a bmdma 0x00018400 irq 10
ata5: SATA max UDMA/133 cmd 0x00019400 ctl 0x0001940a bmdma 0x00018408 irq 10
ata6: PATA max UDMA/133 cmd 0x00019000 ctl 0x0001900a bmdma 0x00018410 irq 10
ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata4.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133
ata4.00: 490234752 sectors, multi 16: LBA48 NCQ (not used)
ata4.00: configured for UDMA/133
ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata5.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133
ata5.00: 490234752 sectors, multi 16: LBA48 NCQ (not used)
ata5.00: configured for UDMA/133
scsi 3:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0 ANSI: 5
sd 3:0:0:0: [sdc] 490234752 512-byte hardware sectors (251000 MB)
sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 3:0:0:0: [sdc] 490234752 512-byte hardware sectors (251000 MB)
sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdc: sdc1 sdc2 sdc3
sd 3:0:0:0: [sdc] Attached SCSI disk
sd 3:0:0:0: Attached scsi generic sg2 type 0
scsi 4:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0 ANSI: 5
sd 4:0:0:0: [sdd] 490234752 512-byte hardware sectors (251000 MB)
sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 4:0:0:0: [sdd] 490234752 512-byte hardware sectors (251000 MB)
sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdd: sdd1 sdd2 sdd3
sd 4:0:0:0: [sdd] Attached SCSI disk
sd 4:0:0:0: Attached scsi generic sg3 type 0

The card information:
00:0d.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID Controller (rev 50)

        Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller
        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
        Interrupt: pin A routed to IRQ 11
        Region 0: I/O ports at b800 [size=16]
        Region 1: I/O ports at b400 [size=16]
        Region 2: I/O ports at b000 [size=16]
        Region 3: I/O ports at a800 [size=16]
        Region 4: I/O ports at a400 [size=32]
        Region 5: I/O ports at a000 [size=256]
        [virtual] Expansion ROM at 30100000 [disabled] [size=64K]
        Capabilities: [e0] 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-

00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 b8 00 00 01 b4 00 00 01 b0 00 00 01 a8 00 00 20: 01 a4 00 00 01 a0 00 00 00 00 00 00 06 11 49 32 30: 00 00 00 00 e0 00 00 00 00 00 00 00 0b 01 00 00 40: 33 03 f1 44 06 af 00 00 00 00 00 03 00 00 00 00 50: 00 00 00 00 00 00 00 00 00 10 10 00 05 00 20 00 60: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 70: 00 00 00 00 01 f0 00 00 01 00 01 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 20 f2 1f 00 10 b7 1f 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 0b f2 c9 35 10 ac c0 00 a8 a8 a8 a8 ff 00 b6 b6
b0: 0f 0f 0f 0f 34 00 00 00 00 00 20 00 00 00 00 00
c0: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
d0: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
e0: 01 00 02 00 00 00 00 00 50 01 49 32 06 11 49 32
f0: 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00

00:0e.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID Controller (rev 50)

        Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller
        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
        Interrupt: pin A routed to IRQ 10
        Region 0: I/O ports at 9800 [size=16]
        Region 1: I/O ports at 9400 [size=16]
        Region 2: I/O ports at 9000 [size=16]
        Region 3: I/O ports at 8800 [size=16]
        Region 4: I/O ports at 8400 [size=32]
        Region 5: I/O ports at 8000 [size=256]
        [virtual] Expansion ROM at 30110000 [disabled] [size=64K]
        Capabilities: [e0] 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-

00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 98 00 00 01 94 00 00 01 90 00 00 01 88 00 00 20: 01 84 00 00 01 80 00 00 00 00 00 00 06 11 49 32 30: 00 00 00 00 e0 00 00 00 00 00 00 00 0a 01 00 00 40: 33 03 f1 44 06 af 00 00 00 00 00 03 00 00 00 00 50: 00 00 00 00 00 00 00 00 00 10 10 00 05 00 10 00 60: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 70: 00 00 00 00 01 f0 00 00 01 00 01 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 80 b6 1f 00 70 bb 1f 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 0b f2 c9 35 10 ac c0 00 a8 a8 a8 a8 ff 00 b6 b6
b0: 0f 0f 0f 0f 34 00 00 00 00 00 20 00 00 00 00 00
c0: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
d0: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
e0: 01 00 02 00 00 00 00 00 50 01 49 32 06 11 49 32
f0: 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00

Thanks for everything and anything.

PS: to me it seems that the kernel treats both ports on one card as paralelly accessible SATA ports but the PCI/DMA makes it only one port a time and this missed fact is causing the problem. So the question is this correct and where should I start looking for the port to pci slot mapping to group ports and where to add some kind of locking - first/second port. (if nobody else has that already fixed somewhere) Btw. how about 3 port and 4 port cards?

author
#1 lore raw

Hi.

More through test revealed that only the second port of each card is failing.

Accessing (cat /dev/sdX > /dev/null) just the sdb or sdd alone = one drive at time produces the error message.

Switched data cables on the card. ata1 port for ata2 port. This should eliminate defective power cable to sdb. And also switched ata4 port for ata5 port data cable. This sould eliminate defective power cable to sdd. (ata3 and 6 are not connected PATA ports on each card)

Failing is again port 2 and port 5 which is now originally flawlessly working drives now failing.

______________________________________________________________

Quoted 16 lines

Od: [email protected]
Komu: <[email protected]>
Datum: 24.01.2008 09:27
Předmět: excess timeouts accessing pci-sata card both ports

Hello.

The scenario:
PCI bus with 2 cards (sata_via)
Each card has 2 SATA ports connected.
Each disk does 40MB/s in hdparm -t read test.

First card has the sda and sdb
Second card has the sdc and sdd
verified by watching the led blinking on the card

Quoted 8 lines

ok - accessing two ports at same time but each port on different card:
cat /dev/sda > /dev/null & cat /dev/sdc > /dev/null

problem - accessing two ports at same time and both ports on same card:
cat /dev/sda > /dev/null & cat /dev/sdb > /dev/null

side effect of the problem:
due to heavy traffic on one port the reset of the other port fails with

timeout and port is disabled

Quoted 2 lines

logged error command at the initial problem (is it DMA read ext and DMA

write log?):

Quoted 2 lines

ata2.00: exception Emask 0x2 SAct 0x0 SErr 0x3000400 action 0x2 frozen ata2.00: cmd 25/00:68:b8:83:13/00:01:00:00:00/e0 tag 0 cdb 0x0 data

184320 in

Quoted 5 lines
        res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x6 (timeout)

ata2: port is slow to respond, please be patient (Status 0xd0)

ata2.00: exception Emask 0x2 SAct 0x0 SErr 0x3000400 action 0x2 frozen ata2.00: cmd c8/00:60:70:50:08/00:00:00:00:00/e0 tag 0 cdb 0x0 data 49152

in

Quoted 22 lines
        res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x6 (timeout)

ata2: port is slow to respond, please be patient (Status 0xd0)

logged EH sequence failure:
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: device not ready (errno=-16), forcing hardreset
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: COMRESET failed (errno=-16)
ata2: reset failed, giving up
ata2.00: disabled
ata2: EH complete
sd 1:0:0:0: [sdb] Result: hostbyte=0x04 driverbyte=0x00

Quoted 8 lines

tried does not work:
- multiply the ATA_TMOUT values by 10 and later by 100 against vanilla
- increase retry counters

some lines from dmesg below
libata version 2.21 loaded.
sata_via 0000:00:0d.0: version 2.3
ACPI: PCI Interrupt 0000:00:0d.0[A] -> Link [LNKA] -> GSI 11 (level, low)

-> IRQ 11

Quoted 5 lines

sata_via 0000:00:0d.0: routed to hard irq line 11
scsi0 : sata_via
scsi1 : sata_via
scsi2 : sata_via
ata1: SATA max UDMA/133 cmd 0x0001b800 ctl 0x0001b80a bmdma 0x0001a400

irq 11

Quoted 1 line

ata2: SATA max UDMA/133 cmd 0x0001b400 ctl 0x0001b40a bmdma 0x0001a408

irq 11

Quoted 1 line

ata3: PATA max UDMA/133 cmd 0x0001b000 ctl 0x0001b00a bmdma 0x0001a410

irq 11

Quoted 9 lines

ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata1.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata1.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata1.00: configured for UDMA/133
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata2.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata2.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata2.00: configured for UDMA/133
scsi 0:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 0:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB) sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 0:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB) sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
sd 0:0:0:0: Attached scsi generic sg0 type 0
scsi 1:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 1:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB) sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 1:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB) sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 6 lines

sdb: sdb1 sdb2 sdb3
sd 1:0:0:0: [sdb] Attached SCSI disk
sd 1:0:0:0: Attached scsi generic sg1 type 0
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 10
PCI: setting IRQ 10 as level-triggered
ACPI: PCI Interrupt 0000:00:0e.0[A] -> Link [LNKB] -> GSI 10 (level, low)

-> IRQ 10

Quoted 5 lines

sata_via 0000:00:0e.0: routed to hard irq line 10
scsi3 : sata_via
scsi4 : sata_via
scsi5 : sata_via
ata4: SATA max UDMA/133 cmd 0x00019800 ctl 0x0001980a bmdma 0x00018400

irq 10

Quoted 1 line

ata5: SATA max UDMA/133 cmd 0x00019400 ctl 0x0001940a bmdma 0x00018408

irq 10

Quoted 1 line

ata6: PATA max UDMA/133 cmd 0x00019000 ctl 0x0001900a bmdma 0x00018410

irq 10

Quoted 9 lines

ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata4.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata4.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata4.00: configured for UDMA/133
ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata5.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata5.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata5.00: configured for UDMA/133
scsi 3:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 3:0:0:0: [sdc] 490234752 512-byte hardware sectors (251000 MB) sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 3:0:0:0: [sdc] 490234752 512-byte hardware sectors (251000 MB) sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sdc: sdc1 sdc2 sdc3
sd 3:0:0:0: [sdc] Attached SCSI disk
sd 3:0:0:0: Attached scsi generic sg2 type 0
scsi 4:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 4:0:0:0: [sdd] 490234752 512-byte hardware sectors (251000 MB) sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 4:0:0:0: [sdd] 490234752 512-byte hardware sectors (251000 MB) sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 6 lines

sdd: sdd1 sdd2 sdd3
sd 4:0:0:0: [sdd] Attached SCSI disk
sd 4:0:0:0: Attached scsi generic sg3 type 0

The card information:
00:0d.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID

Controller (rev 50)

Quoted 2 lines

Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-

ParErr- Stepping- SERR- FastB2B-

Quoted 1 line

Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-

<TAbort- <MAbort- >SERR- <PERR-

Quoted 11 lines
       Latency: 32
       Interrupt: pin A routed to IRQ 11
       Region 0: I/O ports at b800 [size=16]
       Region 1: I/O ports at b400 [size=16]
       Region 2: I/O ports at b000 [size=16]
       Region 3: I/O ports at a800 [size=16]
       Region 4: I/O ports at a400 [size=32]
       Region 5: I/O ports at a000 [size=256]
       [virtual] Expansion ROM at 30100000 [disabled] [size=64K]
       Capabilities: [e0] Power Management version 2
               Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA

PME(D0-,D1-,D2-,D3hot-,D3cold-)

Quoted 18 lines

Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 b8 00 00 01 b4 00 00 01 b0 00 00 01 a8 00 00 20: 01 a4 00 00 01 a0 00 00 00 00 00 00 06 11 49 32 30: 00 00 00 00 e0 00 00 00 00 00 00 00 0b 01 00 00 40: 33 03 f1 44 06 af 00 00 00 00 00 03 00 00 00 00 50: 00 00 00 00 00 00 00 00 00 10 10 00 05 00 20 00 60: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 70: 00 00 00 00 01 f0 00 00 01 00 01 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 20 f2 1f 00 10 b7 1f 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 0b f2 c9 35 10 ac c0 00 a8 a8 a8 a8 ff 00 b6 b6
b0: 0f 0f 0f 0f 34 00 00 00 00 00 20 00 00 00 00 00
c0: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
d0: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
e0: 01 00 02 00 00 00 00 00 50 01 49 32 06 11 49 32
f0: 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00

Quoted 1 line

00:0e.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID

Controller (rev 50)

Quoted 2 lines

Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-

ParErr- Stepping- SERR- FastB2B-

Quoted 1 line

Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-

<TAbort- <MAbort- >SERR- <PERR-

Quoted 11 lines
       Latency: 32
       Interrupt: pin A routed to IRQ 10
       Region 0: I/O ports at 9800 [size=16]
       Region 1: I/O ports at 9400 [size=16]
       Region 2: I/O ports at 9000 [size=16]
       Region 3: I/O ports at 8800 [size=16]
       Region 4: I/O ports at 8400 [size=32]
       Region 5: I/O ports at 8000 [size=256]
       [virtual] Expansion ROM at 30110000 [disabled] [size=64K]
       Capabilities: [e0] Power Management version 2
               Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA

PME(D0-,D1-,D2-,D3hot-,D3cold-)

Quoted 18 lines

Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 98 00 00 01 94 00 00 01 90 00 00 01 88 00 00 20: 01 84 00 00 01 80 00 00 00 00 00 00 06 11 49 32 30: 00 00 00 00 e0 00 00 00 00 00 00 00 0a 01 00 00 40: 33 03 f1 44 06 af 00 00 00 00 00 03 00 00 00 00 50: 00 00 00 00 00 00 00 00 00 10 10 00 05 00 10 00 60: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 70: 00 00 00 00 01 f0 00 00 01 00 01 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 80 b6 1f 00 70 bb 1f 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 0b f2 c9 35 10 ac c0 00 a8 a8 a8 a8 ff 00 b6 b6
b0: 0f 0f 0f 0f 34 00 00 00 00 00 20 00 00 00 00 00
c0: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
d0: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
e0: 01 00 02 00 00 00 00 00 50 01 49 32 06 11 49 32
f0: 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00

Quoted 3 lines

Thanks for everything and anything.

PS: to me it seems that the kernel treats both ports on one card as

paralelly accessible SATA ports but the PCI/DMA makes it only one port a time and this missed fact is causing the problem. So the question is this correct and where should I start looking for the port to pci slot mapping to group ports and where to add some kind of locking - first/second port. (if nobody else has that already fixed somewhere)

Quoted 7 lines

Btw. how about 3 port and 4 port cards?

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author
#3 lore raw

Hmm.

Removed 3 drives. Both data and power.
Left only port1 connected
It's the drive and power cable that in the first test was port2 failing and in second test was port1 and ok
both cards plugged in and initialized.
third test it's the port1 alone sda working ok
fourth test it's the port2 alone sda failing.

any idea what's wrong as this does not seem to be power related problem.

vanilla 2.6.23.14
sata_via module... details in the inlined emails.

(4th test config)
ata1: SATA link down (SStatus 0 SControl 310)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata4: SATA link down (SStatus 0 SControl 310)
ata5: SATA link down (SStatus 0 SControl 310)

Faulty card? Both cards? Driver bug? Or design bug/incompatibility on second port?
______________________________________________________________

Quoted 8 lines

Od: [email protected]
Komu: <[email protected]>
Datum: 24.01.2008 23:59
Předmět: Re: excess timeouts accessing pci-sata card both ports

Hi.

More through test revealed that only the second port of each card is

failing.

Quoted 2 lines

Accessing (cat /dev/sdX > /dev/null) just the sdb or sdd alone = one

drive at time produces the error message.

Quoted 2 lines

Switched data cables on the card. ata1 port for ata2 port. This should

eliminate defective power cable to sdb.

Quoted 1 line

And also switched ata4 port for ata5 port data cable. This sould

eliminate defective power cable to sdd.

Quoted 3 lines

(ata3 and 6 are not connected PATA ports on each card)

Failing is again port 2 and port 5 which is now originally flawlessly

working drives now failing.

Quoted 27 lines

______________________________________________________________

Quoted 16 lines

Od: [email protected]
Komu: <[email protected]>
Datum: 24.01.2008 09:27
Předmět: excess timeouts accessing pci-sata card both ports

Hello.

The scenario:
PCI bus with 2 cards (sata_via)
Each card has 2 SATA ports connected.
Each disk does 40MB/s in hdparm -t read test.

First card has the sda and sdb
Second card has the sdc and sdd
verified by watching the led blinking on the card

Quoted 8 lines

ok - accessing two ports at same time but each port on different card:
cat /dev/sda > /dev/null & cat /dev/sdc > /dev/null

problem - accessing two ports at same time and both ports on same card:
cat /dev/sda > /dev/null & cat /dev/sdb > /dev/null

side effect of the problem:
due to heavy traffic on one port the reset of the other port fails with

Quoted 12 lines

timeout and port is disabled

Quoted 2 lines

logged error command at the initial problem (is it DMA read ext and DMA

write log?):

Quoted 2 lines

ata2.00: exception Emask 0x2 SAct 0x0 SErr 0x3000400 action 0x2 frozen ata2.00: cmd 25/00:68:b8:83:13/00:01:00:00:00/e0 tag 0 cdb 0x0 data

184320 in

Quoted 5 lines
        res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x6 (timeout)

ata2: port is slow to respond, please be patient (Status 0xd0)

ata2.00: exception Emask 0x2 SAct 0x0 SErr 0x3000400 action 0x2 frozen ata2.00: cmd c8/00:60:70:50:08/00:00:00:00:00/e0 tag 0 cdb 0x0 data

49152

Quoted 31 lines

in

Quoted 30 lines
        res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x6 (timeout)

ata2: port is slow to respond, please be patient (Status 0xd0)

logged EH sequence failure:
ata2: port is slow to respond, please be patient (Status 0xd0)
ata2: device not ready (errno=-16), forcing hardreset
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: COMRESET failed (errno=-16)
ata2: reset failed, giving up
ata2.00: disabled
ata2: EH complete
sd 1:0:0:0: [sdb] Result: hostbyte=0x04 driverbyte=0x00

tried does not work:
- multiply the ATA_TMOUT values by 10 and later by 100 against vanilla
- increase retry counters

some lines from dmesg below
libata version 2.21 loaded.
sata_via 0000:00:0d.0: version 2.3
ACPI: PCI Interrupt 0000:00:0d.0[A] -> Link [LNKA] -> GSI 11 (level,

low)

Quoted 40 lines

-> IRQ 11

Quoted 5 lines

sata_via 0000:00:0d.0: routed to hard irq line 11
scsi0 : sata_via
scsi1 : sata_via
scsi2 : sata_via
ata1: SATA max UDMA/133 cmd 0x0001b800 ctl 0x0001b80a bmdma 0x0001a400

irq 11

Quoted 1 line

ata2: SATA max UDMA/133 cmd 0x0001b400 ctl 0x0001b40a bmdma 0x0001a408

irq 11

Quoted 1 line

ata3: PATA max UDMA/133 cmd 0x0001b000 ctl 0x0001b00a bmdma 0x0001a410

irq 11

Quoted 9 lines

ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata1.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata1.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata1.00: configured for UDMA/133
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata2.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata2.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata2.00: configured for UDMA/133
scsi 0:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 0:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB) sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 0:0:0:0: [sda] 490234752 512-byte hardware sectors (251000 MB) sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sda: sda1 sda2 sda3
sd 0:0:0:0: [sda] Attached SCSI disk
sd 0:0:0:0: Attached scsi generic sg0 type 0
scsi 1:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 1:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB) sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't

Quoted 12 lines

support DPO or FUA

Quoted 4 lines

sd 1:0:0:0: [sdb] 490234752 512-byte hardware sectors (251000 MB) sd 1:0:0:0: [sdb] Write Protect is off
sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 6 lines

sdb: sdb1 sdb2 sdb3
sd 1:0:0:0: [sdb] Attached SCSI disk
sd 1:0:0:0: Attached scsi generic sg1 type 0
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 10
PCI: setting IRQ 10 as level-triggered
ACPI: PCI Interrupt 0000:00:0e.0[A] -> Link [LNKB] -> GSI 10 (level,

low)

Quoted 146 lines

-> IRQ 10

Quoted 5 lines

sata_via 0000:00:0e.0: routed to hard irq line 10
scsi3 : sata_via
scsi4 : sata_via
scsi5 : sata_via
ata4: SATA max UDMA/133 cmd 0x00019800 ctl 0x0001980a bmdma 0x00018400

irq 10

Quoted 1 line

ata5: SATA max UDMA/133 cmd 0x00019400 ctl 0x0001940a bmdma 0x00018408

irq 10

Quoted 1 line

ata6: PATA max UDMA/133 cmd 0x00019000 ctl 0x0001900a bmdma 0x00018410

irq 10

Quoted 9 lines

ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata4.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata4.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata4.00: configured for UDMA/133
ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata5.00: ATA-7: Maxtor 6L250S0, BANC1G10, max UDMA/133 ata5.00: 490234752 sectors, multi 16: LBA48 NCQ (not used) ata5.00: configured for UDMA/133
scsi 3:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 3:0:0:0: [sdc] 490234752 512-byte hardware sectors (251000 MB) sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 3:0:0:0: [sdc] 490234752 512-byte hardware sectors (251000 MB) sd 3:0:0:0: [sdc] Write Protect is off
sd 3:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sdc: sdc1 sdc2 sdc3
sd 3:0:0:0: [sdc] Attached SCSI disk
sd 3:0:0:0: Attached scsi generic sg2 type 0
scsi 4:0:0:0: Direct-Access ATA Maxtor 6L250S0 BANC PQ: 0

ANSI: 5

Quoted 4 lines

sd 4:0:0:0: [sdd] 490234752 512-byte hardware sectors (251000 MB) sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 4 lines

sd 4:0:0:0: [sdd] 490234752 512-byte hardware sectors (251000 MB) sd 4:0:0:0: [sdd] Write Protect is off
sd 4:0:0:0: [sdd] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't

support DPO or FUA

Quoted 6 lines

sdd: sdd1 sdd2 sdd3
sd 4:0:0:0: [sdd] Attached SCSI disk
sd 4:0:0:0: Attached scsi generic sg3 type 0

The card information:
00:0d.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID

Controller (rev 50)

Quoted 2 lines

Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-

ParErr- Stepping- SERR- FastB2B-

Quoted 1 line

Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-

<TAbort- <MAbort- >SERR- <PERR-

Quoted 11 lines
       Latency: 32
       Interrupt: pin A routed to IRQ 11
       Region 0: I/O ports at b800 [size=16]
       Region 1: I/O ports at b400 [size=16]
       Region 2: I/O ports at b000 [size=16]
       Region 3: I/O ports at a800 [size=16]
       Region 4: I/O ports at a400 [size=32]
       Region 5: I/O ports at a000 [size=256]
       [virtual] Expansion ROM at 30100000 [disabled] [size=64K]
       Capabilities: [e0] Power Management version 2
               Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA

PME(D0-,D1-,D2-,D3hot-,D3cold-)

Quoted 18 lines

Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 b8 00 00 01 b4 00 00 01 b0 00 00 01 a8 00 00 20: 01 a4 00 00 01 a0 00 00 00 00 00 00 06 11 49 32 30: 00 00 00 00 e0 00 00 00 00 00 00 00 0b 01 00 00 40: 33 03 f1 44 06 af 00 00 00 00 00 03 00 00 00 00 50: 00 00 00 00 00 00 00 00 00 10 10 00 05 00 20 00 60: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 70: 00 00 00 00 01 f0 00 00 01 00 01 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 20 f2 1f 00 10 b7 1f 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 0b f2 c9 35 10 ac c0 00 a8 a8 a8 a8 ff 00 b6 b6
b0: 0f 0f 0f 0f 34 00 00 00 00 00 20 00 00 00 00 00
c0: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
d0: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
e0: 01 00 02 00 00 00 00 00 50 01 49 32 06 11 49 32
f0: 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00

Quoted 1 line

00:0e.0 RAID bus controller: VIA Technologies, Inc. VT6421 IDE RAID

Controller (rev 50)

Quoted 2 lines

Subsystem: VIA Technologies, Inc. VT6421 IDE RAID Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-

ParErr- Stepping- SERR- FastB2B-

Quoted 1 line

Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-

<TAbort- <MAbort- >SERR- <PERR-

Quoted 11 lines
       Latency: 32
       Interrupt: pin A routed to IRQ 10
       Region 0: I/O ports at 9800 [size=16]
       Region 1: I/O ports at 9400 [size=16]
       Region 2: I/O ports at 9000 [size=16]
       Region 3: I/O ports at 8800 [size=16]
       Region 4: I/O ports at 8400 [size=32]
       Region 5: I/O ports at 8000 [size=256]
       [virtual] Expansion ROM at 30110000 [disabled] [size=64K]
       Capabilities: [e0] Power Management version 2
               Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA

PME(D0-,D1-,D2-,D3hot-,D3cold-)

Quoted 18 lines

Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: 06 11 49 32 07 00 90 02 50 00 04 01 00 20 00 00 10: 01 98 00 00 01 94 00 00 01 90 00 00 01 88 00 00 20: 01 84 00 00 01 80 00 00 00 00 00 00 06 11 49 32 30: 00 00 00 00 e0 00 00 00 00 00 00 00 0a 01 00 00 40: 33 03 f1 44 06 af 00 00 00 00 00 03 00 00 00 00 50: 00 00 00 00 00 00 00 00 00 10 10 00 05 00 10 00 60: 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 ff ff 70: 00 00 00 00 01 f0 00 00 01 00 01 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 80 b6 1f 00 70 bb 1f 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
a0: 0b f2 c9 35 10 ac c0 00 a8 a8 a8 a8 ff 00 b6 b6
b0: 0f 0f 0f 0f 34 00 00 00 00 00 20 00 00 00 00 00
c0: 00 02 00 00 00 00 00 00 00 02 00 00 00 00 00 00
d0: 02 01 00 00 00 00 00 00 02 01 00 00 00 00 00 00
e0: 01 00 02 00 00 00 00 00 50 01 49 32 06 11 49 32
f0: 00 00 70 00 00 00 00 00 00 00 00 00 00 00 00 00

Quoted 3 lines

Thanks for everything and anything.

PS: to me it seems that the kernel treats both ports on one card as

paralelly accessible SATA ports but the PCI/DMA makes it only one port a time and this missed fact is causing the problem. So the question is this correct and where should I start looking for the port to pci slot mapping to group ports and where to add some kind of locking - first/second port. (if nobody else has that already fixed somewhere)

Quoted 7 lines

Btw. how about 3 port and 4 port cards?

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#4 lore raw
Quoted 13 lines · [email protected] wrote:

Removed 3 drives. Both data and power.
Left only port1 connected
It's the drive and power cable that in the first test was port2 failing and in second test was port1 and ok
both cards plugged in and initialized.
third test it's the port1 alone sda working ok
fourth test it's the port2 alone sda failing.

any idea what's wrong as this does not seem to be power related problem.

vanilla 2.6.23.14
sata_via module... details in the inlined emails.

Quoted 7 lines

(4th test config)
ata1: SATA link down (SStatus 0 SControl 310)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata4: SATA link down (SStatus 0 SControl 310)
ata5: SATA link down (SStatus 0 SControl 310)

Faulty card? Both cards? Driver bug? Or design bug/incompatibility on second port?

It seems like you're experiencing transmission problems on reads. SError value of 0x3000400 is Protocol Error, Link Sequence Error and Transport State Transition Error. Hardresetting the link should usually recover from such conditions but error handling on via has never been reliable. How easily can you trigger the problem?

Thanks.

Signature · 1 line
tejun
author
#5 lore raw

Hi.

Reproducible with only one disk and one card on one SATA port.
The card has 3 ports. 2 internal, 1 external. The internal closer to the external and the extrenal has the problem.

Just doing cat /dev/disk > /dev/null
or any intensive IO - it happens in less then aprox 30sec.

Or setting raid speed min and max to some high number and do a resync with multiple disks can trigger similar write error.
Anyway got already 6 different cards and all behave similarly plus one of the internal ports is rock solid while the other has problems so I take it as falty design and RMA hoprfully last time now to legaly request money back.
______________________________________________________________

Quoted 6 lines

Od: [email protected]
Komu: [email protected]
CC: [email protected]
Datum: 02.02.2008 06:11
Předmět: Re: excess timeouts accessing pci-sata card both ports

Quoted 10 lines
Quoted 9 lines · [email protected] wrote:

Removed 3 drives. Both data and power.
Left only port1 connected
It's the drive and power cable that in the first test was port2 failing and in second test was port1 and ok
both cards plugged in and initialized.
third test it's the port1 alone sda working ok
fourth test it's the port2 alone sda failing.

any idea what's wrong as this does not seem to be power related

problem.

Quoted 11 lines
Quoted 11 lines

vanilla 2.6.23.14
sata_via module... details in the inlined emails.

(4th test config)
ata1: SATA link down (SStatus 0 SControl 310)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata4: SATA link down (SStatus 0 SControl 310)
ata5: SATA link down (SStatus 0 SControl 310)

Faulty card? Both cards? Driver bug? Or design bug/incompatibility on

second port?

Quoted 12 lines

It seems like you're experiencing transmission problems on reads. SError value of 0x3000400 is Protocol Error, Link Sequence Error and Transport State Transition Error. Hardresetting the link should usually recover from such conditions but error handling on via has never been reliable. How easily can you trigger the problem?

Thanks.

Signature · 1 line
tejun