From: Yan Seiner <yan@seiner.com>
To: linux-ide@vger.kernel.org
Subject: Backplane mystery
Date: Thu, 26 Feb 2009 07:24:49 -0800 [thread overview]
Message-ID: <49A6B441.8010605@seiner.com> (raw)
I have an external enclosure with an SATA backplane with 20 drive
slots. I am using 4 port multipliers to drive all 20 slots.
One set of 5 slots connected to a single port multiplier always fails with
[ 16.449673] ata2: FORCE: PHY spd limit set to 1.5Gbps
[ 16.449740] ata2: SATA max UDMA/100 host m128@0xfdeff000 port
0xfdefa000 irq 16
[ 20.616038] ata2: SATA link down (SStatus 0 SControl 10)
[ 80.596644] ata2: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0xe
frozen
[ 80.596956] ata2: irq_stat 0x00a00080, device exchanged
[ 80.597039] ata2: hard resetting link
[ 90.604024] ata2: softreset failed (timeout)
[ 90.604108] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 90.604183] ata2: link online but device misclassified, retrying
[ 90.604264] ata2: hard resetting link
[ 100.604026] ata2: softreset failed (timeout)
[ 100.604109] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 100.604186] ata2: link online but device misclassified, retrying
[ 100.604259] ata2: hard resetting link
[ 135.612026] ata2: softreset failed (timeout)
[ 135.612109] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 135.612191] ata2: link online but device misclassified, retrying
[ 135.612273] ata2: hard resetting link
[ 140.616024] ata2: softreset failed (timeout)
[ 140.616107] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 140.616183] ata2: link online but device misclassified, device
detection might fail
[ 140.616296] ata2: EH complete
I've swapped cables, port multipliers, and so on. It's not the
backplace, as I can swap cables from one of the port multipliers that
works and it will detect drives. It's not the port multiplier, as I've
swapped those. The only thing I can think of is that it's failing
initialization. If I swap cables from a port multiplier that's
initialized while the system is running, it works.
Before I start taking random actions, can someone interpret the above
for me? What's it telling me?
For comparison, here's the initialization sequence from the adjacent
port multiplier:
[ 16.449504] ata1: FORCE: PHY spd limit set to 1.5Gbps
[ 16.449571] ata1: SATA max UDMA/100 host m128@0xfdeff000 port
0xfdef8000 irq 16
[ 18.536033] ata1: SATA link down (SStatus 0 SControl 10)
[ 19.374191] ata10: SATA max UDMA/133 cmd 0xbc00 ctl 0xb800 bmdma
0xb408 irq 21
[ 80.596647] ata1: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0xe
frozen
[ 80.596649] ata1: irq_stat 0x00a00080, device exchanged
[ 80.596653] ata1: hard resetting link
[ 82.796045] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 82.796408] ata1.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports,
feat 0x1/0x9
[ 82.796796] ata1.00: hard resetting link
[ 83.116406] ata1.00: SATA link down (SStatus 0 SControl 10)
[ 83.116482] ata1.01: hard resetting link
[ 83.436402] ata1.01: SATA link down (SStatus 0 SControl 310)
[ 83.436479] ata1.02: hard resetting link
[ 83.756394] ata1.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 83.756467] ata1.03: hard resetting link
[ 84.076432] ata1.03: SATA link down (SStatus 0 SControl 310)
[ 84.076510] ata1.04: hard resetting link
[ 84.396387] ata1.04: SATA link down (SStatus 0 SControl 310)
[ 84.396465] ata1.05: hard resetting link
[ 84.716330] ata1.05: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 84.828010] ata1.02: failed to IDENTIFY (I/O error, err_mask=0x11)
[ 84.828082] ata1.15: hard resetting link
[ 84.828145] ata1: controller in dubious state, performing PORT_RST
[ 87.060032] ata1.15: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 87.060351] ata1.00: hard resetting link
[ 87.380330] ata1.00: SATA link down (SStatus 0 SControl 10)
[ 87.380404] ata1.01: hard resetting link
[ 87.700329] ata1.01: SATA link down (SStatus 0 SControl 310)
[ 88.756028] ata1.02: hard resetting link
[ 89.076366] ata1.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 89.716017] ata1.05: hard resetting link
[ 90.036392] ata1.05: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 90.148021] ata1.02: failed to IDENTIFY (I/O error, err_mask=0x11)
[ 90.148104] ata1.15: hard resetting link
[ 90.148177] ata1: controller in dubious state, performing PORT_RST
[ 92.380043] ata1.15: SATA link up 1.5 Gbps (SStatus 113 SControl 10)
[ 92.380415] ata1.00: hard resetting link
[ 92.700329] ata1.00: SATA link down (SStatus 0 SControl 10)
[ 92.700398] ata1.01: hard resetting link
[ 93.020334] ata1.01: SATA link down (SStatus 0 SControl 310)
[ 94.076081] ata1.02: hard resetting link
[ 94.396398] ata1.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[ 94.396479] ata1.03: hard resetting link
[ 94.716392] ata1.03: SATA link down (SStatus 0 SControl 310)
[ 94.716465] ata1.04: hard resetting link
[ 95.036397] ata1.04: SATA link down (SStatus 0 SControl 310)
[ 95.036474] ata1.05: hard resetting link
[ 95.356426] ata1.05: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[ 95.369116] ata1.02: ATA-8: Hitachi HDT721010SLA360, ST6OA31B, max
UDMA/133
[ 95.369193] ata1.02: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[ 95.370256] ata1.02: configured for UDMA/100
[ 95.370769] ata1: EH complete
If I swap cables from ata1 to ata2 while the system is running, the
backplane will detect drives and work fine.
I'm already forcing a slower speed:
yan@selene:/etc/modprobe.d$ cat libata
options libata force=1.15:1.5Gbps,2.15:1.5Gbps,3.15:1.5Gbps,4.15:1.5Gbps
I'm using a Sil 3132 controller:
02:00.0 Mass storage controller: Silicon Image, Inc. SiI 3132 Serial ATA
Raid II Controller (rev 01)
The system sees 3 port multipliers; not 4 as it should:
[ 82.488354] ata4.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports,
feat 0x1/0x9
[ 82.488507] ata3.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports,
feat 0x1/0x9
[ 82.796408] ata1.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports,
feat 0x1/0x9
I suspect it's cabling length as the 5 "dead" slots are the farthest
down the backplane but swapping cables randomly just doesn't seem like a
good approach.
What's my next step?
Thanks,
--Yan
--
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next reply other threads:[~2009-02-26 15:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-26 15:24 Yan Seiner [this message]
2009-02-26 15:34 ` Backplane mystery Mark Lord
2009-02-27 15:39 ` Yan Seiner
2009-03-02 8:46 ` Tejun Heo
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