From: Mark Lord <liml@rtr.ca>
To: Yan Seiner <yan@seiner.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: Backplane mystery
Date: Thu, 26 Feb 2009 10:34:27 -0500 [thread overview]
Message-ID: <49A6B683.9060806@rtr.ca> (raw)
In-Reply-To: <49A6B441.8010605@seiner.com>
Yan Seiner wrote:
> 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?
..
Perhaps try a different chipset controller card,
in hope that it will have stronger drive capability?
next prev parent reply other threads:[~2009-02-26 15:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-26 15:24 Backplane mystery Yan Seiner
2009-02-26 15:34 ` Mark Lord [this message]
2009-02-27 15:39 ` Yan Seiner
2009-03-02 8:46 ` Tejun Heo
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