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Message-ID: <47ad4316-e374-26db-3cbe-aa91642aeb68@huawei.com>
Date:   Thu, 13 Jul 2017 09:08:04 +0100
From:   John Garry <john.garry@...wei.com>
To:     wangyijing <wangyijing@...wei.com>, <jejb@...ux.vnet.ibm.com>,
        <martin.petersen@...cle.com>
CC:     <chenqilin2@...wei.com>, <hare@...e.com>,
        <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <chenxiang66@...ilicon.com>, <huangdaode@...ilicon.com>,
        <wangkefeng.wang@...wei.com>, <zhaohongjiang@...wei.com>,
        <dingtianhong@...wei.com>, <guohanjun@...wei.com>,
        <yanaijie@...wei.com>, <hch@....de>, <dan.j.williams@...el.com>,
        <emilne@...hat.com>, <thenzl@...hat.com>, <wefu@...hat.com>,
        <charles.chenxin@...wei.com>, <chenweilong@...wei.com>,
        Linuxarm <linuxarm@...wei.com>
Subject: Re: [PATCH v3 0/7] Enhance libsas hotplug feature

On 13/07/2017 02:37, wangyijing wrote:
>> > So much nicer. BTW, /dev/sdb is a SATA disk, the rest are SAS.
> Oh, I take a mistake ? The result you tested the hotplug which applied this patchset is fine ?
>
> Thanks!
> Yijing.

Well basic hotplug is fine, as below. I did not do any robust testing.

root@(none)$ echo 0 > ./phy-0:7/sas_phy/phy-0:7/enable
root@(none)$ [  180.147676] hisi_sas_v2_hw HISI0162:01: found dev[8:1] 
is gone
[  180.216558] hisi_sas_v2_hw HISI0162:01: found dev[7:1] is gone
[  180.280548] hisi_sas_v2_hw HISI0162:01: found dev[6:1] is gone
[  180.352556] hisi_sas_v2_hw HISI0162:01: found dev[5:1] is gone
[  180.432495] hisi_sas_v2_hw HISI0162:01: found dev[4:1] is gone
[  180.508492] hisi_sas_v2_hw HISI0162:01: found dev[3:1] is gone
[  180.527577] sd 0:0:1:0: [sdb] Synchronizing SCSI cache
[  180.532728] sd 0:0:1:0: [sdb] Synchronize Cache(10) failed: Result: 
hostbyte=0x04 driverbyte=0x00
[  180.541591] sd 0:0:1:0: [sdb] Stopping disk
[  180.545767] sd 0:0:1:0: [sdb] Start/Stop Unit failed: Result: 
hostbyte=0x04 driverbyte=0x00
[  180.612491] hisi_sas_v2_hw HISI0162:01: found dev[2:5] is gone
[  180.696452] hisi_sas_v2_hw HISI0162:01: found dev[1:1] is gone
[  180.703221] hisi_sas_v2_hw HISI0162:01: found dev[0:2] is gone

root@(none)$ echo 1 > ./phy-0:7/sas_phy/phy-0:7/enable
root@(none)$ [  185.937831] hisi_sas_v2_hw HISI0162:01: phyup: phy7 
link_rate=11
[  185.996575] scsi 0:0:8:0: Direct-Access     SanDisk  LT0200MO 
P404 PQ: 0 ANSI: 6
[  187.059642] ata2.00: ATA-8: HGST HUS724040ALA640, MFAOA8B0, max UDMA/133
[  187.066341] ata2.00: 7814037168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[  187.073278] ata2.00: ATA Identify Device Log not supported
[  187.078755] ata2.00: Security Log not supported
[  187.085239] ata2.00: ATA Identify Device Log not supported
[  187.090715] ata2.00: Security Log not supported
[  187.095236] ata2.00: configured for UDMA/133
[  187.136917] scsi 0:0:9:0: Direct-Access     ATA      HGST HUS724040AL 
A8B0 PQ: 0 ANSI: 5
[  187.187612] sd 0:0:9:0: [sdb] 7814037168 512-byte logical blocks: 
(4.00 TB/3.64 TiB)
[  187.195365] sd 0:0:9:0: [sdb] Write Protect is off
[  187.200161] sd 0:0:9:0: [sdb] Write cache: enabled, read cache: 
enabled, doesn't support DPO or FUA
[  187.223844] sd 0:0:9:0: [sdb] Attached SCSI disk
[  187.225498] scsi 0:0:10:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  187.243864] sd 0:0:8:0: [sda] 390721968 512-byte logical blocks: (200 
GB/186 GiB)
[  187.285879] sd 0:0:8:0: [sda] Write Protect is off
[  187.367898] sd 0:0:8:0: [sda] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  187.524043] scsi 0:0:11:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  187.701505] sd 0:0:10:0: [sdc] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  187.743547] sd 0:0:10:0: [sdc] Write Protect is off
[  187.822546] scsi 0:0:12:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  187.825531] sd 0:0:10:0: [sdc] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  188.000167] sd 0:0:11:0: [sdd] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  188.042205] sd 0:0:11:0: [sdd] Write Protect is off
[  188.121527] scsi 0:0:13:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  188.124274] sd 0:0:11:0: [sdd] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  188.298942] sd 0:0:12:0: [sde] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  188.340960] sd 0:0:12:0: [sde] Write Protect is off
[  188.420023] scsi 0:0:14:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  188.422969] sd 0:0:12:0: [sde] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  188.597501] sd 0:0:13:0: [sdf] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  188.605069] sd 0:0:8:0: [sda] Attached SCSI disk
[  188.639520] sd 0:0:13:0: [sdf] Write Protect is off
[  188.682445] scsi 0:0:15:0: Enclosure         12G SAS  Expander 
  RevB PQ: 0 ANSI: 6
[  188.721540] sd 0:0:13:0: [sdf] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  188.896399] sd 0:0:14:0: [sdg] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  188.938445] sd 0:0:14:0: [sdg] Write Protect is off
[  189.020444] sd 0:0:14:0: [sdg] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  189.060608] sd 0:0:10:0: [sdc] Attached SCSI disk
[  189.359073] sd 0:0:11:0: [sdd] Attached SCSI disk
[  189.657643] sd 0:0:12:0: [sde] Attached SCSI disk
[  189.956585] sd 0:0:13:0: [sdf] Attached SCSI disk
[  190.255148] sd 0:0:14:0: [sdg] Attached SCSI disk

root@(none)$ echo 0 > ./phy-0:7/sas_phy/phy-0:7/enable
root@(none)$ [  192.895718] hisi_sas_v2_hw HISI0162:01: found dev[8:1] 
is gone
[  192.964671] hisi_sas_v2_hw HISI0162:01: found dev[7:1] is gone
[  193.032744] hisi_sas_v2_hw HISI0162:01: found dev[6:1] is gone
[  193.096755] hisi_sas_v2_hw HISI0162:01: found dev[5:1] is gone
[  193.157072] hisi_sas_v2_hw HISI0162:01: found dev[4:1] is gone
[  193.221062] hisi_sas_v2_hw HISI0162:01: found dev[3:1] is gone
[  193.247684] sd 0:0:9:0: [sdb] Synchronizing SCSI cache
[  193.252834] sd 0:0:9:0: [sdb] Synchronize Cache(10) failed: Result: 
hostbyte=0x04 driverbyte=0x00
[  193.261701] sd 0:0:9:0: [sdb] Stopping disk
[  193.265879] sd 0:0:9:0: [sdb] Start/Stop Unit failed: Result: 
hostbyte=0x04 driverbyte=0x00
[  193.325165] hisi_sas_v2_hw HISI0162:01: found dev[2:5] is gone
[  193.381094] hisi_sas_v2_hw HISI0162:01: found dev[1:1] is gone
[  193.388719] hisi_sas_v2_hw HISI0162:01: found dev[0:2] is gone

root@(none)$ echo 1 > ./phy-0:7/sas_phy/phy-0:7/enable
root@(none)$ [  196.221879] hisi_sas_v2_hw HISI0162:01: phyup: phy7 
link_rate=11
[  196.281178] scsi 0:0:16:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  196.973390] ata3.00: ATA-8: HGST HUS724040ALA640, MFAOA8B0, max UDMA/133
[  196.980088] ata3.00: 7814037168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[  196.987022] ata3.00: ATA Identify Device Log not supported
[  196.992499] ata3.00: Security Log not supported
[  196.998953] ata3.00: ATA Identify Device Log not supported
[  197.004434] ata3.00: Security Log not supported
[  197.008954] ata3.00: configured for UDMA/133
[  197.050428] scsi 0:0:17:0: Direct-Access     ATA      HGST 
HUS724040AL A8B0 PQ: 0 ANSI: 5
[  197.091593] sd 0:0:17:0: [sdb] 7814037168 512-byte logical blocks: 
(4.00 TB/3.64 TiB)
[  197.099441] sd 0:0:17:0: [sdb] Write Protect is off
[  197.104326] sd 0:0:17:0: [sdb] Write cache: enabled, read cache: 
enabled, doesn't support DPO or FUA
[  197.122982] sd 0:0:17:0: [sdb] Attached SCSI disk
[  197.129367] scsi 0:0:18:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  197.157605] sd 0:0:16:0: [sda] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  197.199622] sd 0:0:16:0: [sda] Write Protect is off
[  197.281604] sd 0:0:16:0: [sda] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  197.427727] scsi 0:0:19:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  197.605362] sd 0:0:18:0: [sdc] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  197.647409] sd 0:0:18:0: [sdc] Write Protect is off
[  197.726403] scsi 0:0:20:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  197.729389] sd 0:0:18:0: [sdc] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  197.903664] sd 0:0:19:0: [sdd] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  197.945699] sd 0:0:19:0: [sdd] Write Protect is off
[  198.024789] scsi 0:0:21:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  198.027685] sd 0:0:19:0: [sdd] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  198.202410] sd 0:0:20:0: [sde] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  198.244458] sd 0:0:20:0: [sde] Write Protect is off
[  198.323137] scsi 0:0:22:0: Direct-Access     SanDisk  LT0200MO 
  P404 PQ: 0 ANSI: 6
[  198.326491] sd 0:0:20:0: [sde] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  198.500754] sd 0:0:21:0: [sdf] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  198.516373] sd 0:0:16:0: [sda] Attached SCSI disk
[  198.542773] sd 0:0:21:0: [sdf] Write Protect is off
[  198.585184] scsi 0:0:23:0: Enclosure         12G SAS  Expander 
  RevB PQ: 0 ANSI: 6
[  198.624911] sd 0:0:21:0: [sdf] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  198.799446] sd 0:0:22:0: [sdg] 390721968 512-byte logical blocks: 
(200 GB/186 GiB)
[  198.841484] sd 0:0:22:0: [sdg] Write Protect is off
[  198.923508] sd 0:0:22:0: [sdg] Write cache: disabled, read cache: 
disabled, supports DPO and FUA
[  198.964420] sd 0:0:18:0: [sdc] Attached SCSI disk
[  199.262903] sd 0:0:19:0: [sdd] Attached SCSI disk
[  199.561175] sd 0:0:20:0: [sde] Attached SCSI disk
[  199.859533] sd 0:0:21:0: [sdf] Attached SCSI disk

root@(none)$ [  200.158121] sd 0:0:22:0: [sdg] Attached SCSI disk

root@(none)$


>
>
>> >
>> > John

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