Re: Fwd: libata-pmp patch for 3.2.x and later for eSATA Port Multiplier Sil3726

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You may see these messages more easier when cold boot even if there are
a few Sil3726 port multiplier:
  :
> [    0.000000] Linux version 3.2.10-3.fc16.i686.PAE (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.6.2 20111027 (Red Hat 4.6.2-1) (GCC) ) #1 SMP Thu Mar 15 20:37:01 UTC 2012
  :
> [    3.764070] ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [    3.764394] ata5.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9
> [    3.767216] ata5.00: hard resetting link
> [    4.105264] ata5.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [    4.105300] ata5.01: hard resetting link
> [    4.421064] ata5.01: softreset failed (SRST command error)
> [    4.421078] ata5.01: failed to read SCR 0 (Emask=0x40)
> [    4.421085] ata5.01: reset failed (errno=-85), retrying in 10 secs
> [   14.105089] ata5.01: reset failed, giving up
> [   14.105100] ata5.15: hard resetting link
> [   16.226094] ata5.15: softreset failed (SRST command error)
> [   16.226102] ata5.15: reset failed (errno=-5), retrying in 8 secs
> [   24.105243] ata5.15: hard resetting link
> [   26.226231] ata5.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   26.226242] ata5.15: PMP revalidation failed (errno=-19)
> [   31.226079] ata5.15: hard resetting link
> [   33.358086] ata5.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   33.358388] ata5.00: hard resetting link
> [   33.696256] ata5.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [   33.696291] ata5.01: hard resetting link
> [   34.034255] ata5.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   34.034292] ata5.02: hard resetting link
> [   34.460042] ata5.02: softreset failed (SRST command error)
> [   34.460064] ata5.02: failed to read SCR 0 (Emask=0x40)
> [   34.460070] ata5.02: reset failed (errno=-85), retrying in 10 secs
> [   44.034216] ata5.02: reset failed, giving up
> [   44.034225] ata5.15: hard resetting link
> [   44.034230] ata5: controller in dubious state, performing PORT_RST
> [   46.188102] ata5.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   46.188403] ata5.00: hard resetting link
> [   46.526267] ata5.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [   46.526301] ata5.01: hard resetting link
> [   46.864262] ata5.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   46.864297] ata5.02: hard resetting link
> [   47.202253] ata5.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   47.202288] ata5.03: hard resetting link
> [   47.628038] ata5.03: softreset failed (SRST command error)
> [   47.628052] ata5.03: failed to read SCR 0 (Emask=0x40)
> [   47.628058] ata5.03: reset failed (errno=-85), retrying in 10 secs
> [   57.202189] ata5.03: reset failed, giving up
> [   57.202197] ata5.15: hard resetting link
> [   57.202202] ata5: controller in dubious state, performing PORT_RST
> [   59.356051] ata5.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   59.356397] ata5.00: hard resetting link
> [   59.694252] ata5.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [   59.694287] ata5.01: hard resetting link
> [   60.032253] ata5.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   60.032290] ata5.02: hard resetting link
> [   60.370261] ata5.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   60.370296] ata5.03: hard resetting link
> [   60.708269] ata5.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   60.708304] ata5.04: hard resetting link
> [   61.013360] ata5.04: SATA link down (SStatus 0 SControl 320)
> [   61.013422] ata5.05: hard resetting link
  :
> [   63.850067] ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   63.850427] ata6.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9
> [   63.853419] ata6.00: hard resetting link
> [   64.180241] ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [   64.180280] ata6.01: hard resetting link
> [   64.606036] ata6.01: softreset failed (SRST command error)
> [   64.606054] ata6.01: failed to read SCR 0 (Emask=0x40)
> [   64.606061] ata6.01: reset failed (errno=-85), retrying in 10 secs
> [   74.180035] ata6.01: reset failed, giving up
> [   74.180046] ata6.15: hard resetting link
> [   74.180052] ata6: controller in dubious state, performing PORT_RST
> [   76.334081] ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   76.334404] ata6.00: hard resetting link
> [   76.661266] ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [   76.661305] ata6.01: hard resetting link
> [   76.988320] ata6.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   76.988357] ata6.02: hard resetting link
> [   77.414044] ata6.02: softreset failed (SRST command error)
> [   77.414057] ata6.02: failed to read SCR 0 (Emask=0x40)
> [   77.414065] ata6.02: reset failed (errno=-85), retrying in 10 secs
> [   86.988104] ata6.02: reset failed, giving up
> [   86.988114] ata6.15: hard resetting link
> [   86.988120] ata6: controller in dubious state, performing PORT_RST
> [   89.142149] ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [   89.142465] ata6.00: hard resetting link
> [   89.469329] ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [   89.469367] ata6.01: hard resetting link
> [   89.796252] ata6.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   89.796289] ata6.02: hard resetting link
> [   90.123242] ata6.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [   90.123277] ata6.03: hard resetting link
> [   90.549042] ata6.03: softreset failed (SRST command error)
> [   90.549058] ata6.03: failed to read SCR 0 (Emask=0x40)
> [   90.549065] ata6.03: reset failed (errno=-85), retrying in 10 secs
> [  100.123063] ata6.03: reset failed, giving up
> [  100.123072] ata6.15: hard resetting link
> [  100.123078] ata6: controller in dubious state, performing PORT_RST
> [  102.277076] ata6.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
> [  102.277392] ata6.00: hard resetting link
> [  102.604240] ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
> [  102.604278] ata6.01: hard resetting link
> [  102.931241] ata6.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [  102.931279] ata6.02: hard resetting link
> [  103.258256] ata6.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [  103.258292] ata6.03: hard resetting link
> [  103.585257] ata6.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> [  103.585294] ata6.04: hard resetting link
> [  103.890368] ata6.04: SATA link down (SStatus 0 SControl 320)
> [  103.890433] ata6.05: hard resetting link
> [  104.195336] ata6.05: SATA link up 1.5 Gbps (SStatus 113 SControl 320)
  :


(2012/03/14 01:56), Mark Lord wrote:
> Sounds like a regression from 3.1 to 3.2.
> Copying linux-ide & Jeff.
> 
> -------- Original Message --------
> Subject: libata-pmp patch for 3.2.x and later for eSATA Port Multiplier Sil3726
> Date: Tue, 13 Mar 2012 13:28:54 +0900
> From: ANEZAKI, Akira <fireblade1230@xxxxxxxxxxx>
> To: linux-kernel@xxxxxxxxxxxxxxx
> 
> Hi!
> 
> I'm in trouble on a PC that has 6 eSATA port multiplier.
> 
>>From kernel 3.2.x, kernel fails to boot when many HDDs are connected to
> many eSATA port multiplier with Sil3726.
> 
> Kernel is repeating eSATA bus reset while booting and spend long time,
> and result into fail to boot with timeout. It causes that some HDDs
> cannot be seen from kernel on a PC that has 6 Sil3726 port multiplier.
> dmesg contains many reset messages while booting like this:
>    :
>> [   48.060454] ata6: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
>> [   48.061150] ata6.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9
>> [   48.063158] ata6.00: hard resetting link
>> [   48.401020] ata6.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
>> [   48.401080] ata6.01: hard resetting link
>> [   48.825741] ata6.01: softreset failed (SRST command error)
>> [   48.935499] ata6.01: failed to read SCR 0 (Emask=0x1)
>> [   48.935505] ata6.01: reset failed (errno=-85), retrying in 10 secs
>    :
>> [  294.950152] ata9: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
>> [  294.950453] ata9.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9
>> [  294.953382] ata9.00: hard resetting link
>> [  304.937981] ata9.00: softreset failed (timeout)
>> [  307.931302] ata9.15: qc timeout (cmd 0xe4)
>> [  307.931318] ata9.00: failed to read SCR 0 (Emask=0x5)
>> [  307.931322] ata9.00: reset failed, giving up
>> [  307.931327] ata9.15: hard resetting link
>> [  310.058635] ata9.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
>> [  310.059016] ata9.00: hard resetting link
>> [  320.044490] ata9.00: softreset failed (timeout)
>> [  323.037851] ata9.15: qc timeout (cmd 0xe4)
>> [  323.037868] ata9.00: failed to read SCR 0 (Emask=0x5)
>> [  323.037872] ata9.00: reset failed, giving up
>    :
>> [  556.513676] systemd[1]: Job dev-disk-by\x2dlabel-WORK.device/start timed out.
>> [  556.513693] systemd[1]: Job fedora-autorelabel-mark.service/start failed with result 'dependency'.
>> [  556.513816] systemd[1]: Job fedora-autorelabel.service/start failed with result 'dependency'.
>> [  556.513833] systemd[1]: Job local-fs.target/start failed with result 'dependency'.
>> [  556.513846] systemd[1]: Triggering OnFailure= dependencies of local-fs.target.
>> [  556.515352] systemd[1]: Job mnt-work.mount/start failed with result 'dependency'.
>> [  556.515368] systemd[1]: Job dev-disk-by\x2dlabel-WORK.device/start failed with result 'timeout'.
>> [  556.851000] systemd[1]: Startup finished in 2s 212ms 906us (kernel) + 7min 44s 688ms 483us (initrd) + 1min 30s 977ms 147us (userspace) = 9min 17s 878ms 536us.
> 
> When only one sentence in drivers/ata/libata-pmp.c only for Sil3726 back
> to that in kernel 3.1.x, this problem is not seen. I attached the patch
> file.
> 
> This patch solves the problem on my PC but I can't understand ata
> subsystem. So I'm afraid of side effect.
> 
> Can you consider this patch?
> 
> Best Regards,
> ANEZAKI, Akira
> 
> -------- Original Message --------
> Subject: [Bug 787468] boot fails by timeout while activating RAIDs with
> many HDDs
> Date: Mon, 12 Mar 2012 16:30:45 -0400
> From: bugzilla@xxxxxxxxxx
> To: fireblade1230@xxxxxxxxxxx
> 
> Please do not reply directly to this email. All additional
> comments should be made in the comments box of this bug.
> 
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=787468
> 
> --- Comment #20 from Dave Jones <davej@xxxxxxxxxx> 2012-03-12 16:30:43
> EDT ---
> can you post this patch upstream to linux-kernel@xxxxxxxxxxxxxxx ?
> if it is acceptable there, we will add it to the Fedora kernel.
> 

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