** Changed in: kunpeng920
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1853993
Title:
[hns-1126]scsi: hisi_sas: Retry 3 times TMF IO for SAS disks when init
device
Status in kunpeng920:
Fix Released
Status in kunpeng920 ubuntu-18.04 series:
Won't Fix
Status in kunpeng920 ubuntu-18.04-hwe series:
Fix Released
Status in kunpeng920 ubuntu-19.04 series:
Won't Fix
Status in kunpeng920 ubuntu-19.10 series:
Fix Released
Status in kunpeng920 ubuntu-20.04 series:
Fix Released
Status in kunpeng920 upstream-kernel series:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Invalid
Status in linux source package in Eoan:
Fix Released
Status in linux source package in Focal:
Fix Released
Bug description:
[Impact]
Disks will be lost on SAS interface reset
[Fix]
scsi: hisi_sas: Retry 3 times TMF IO for SAS disks when init device
[Test]
Resetting SAS interfaces shall not lose any disks
[Regression Potential]
Patch only for hisi_sas. Lowest risk for other platform/driver.
"[Steps to Reproduce]
1. Close all the PHYS;
2. Inject error;
3. Open one PHY;
[Actual Results]
Some disk will be lost
[Expected Results]
No disk will be lost
[Reproducibility]
occasionally
[Additional information]
Hardware: D06 CS
Firmware: NA
Kernel: NA
[Resolution]
When init device for SAS disks, it will send TMF IO to clear disks. At that
time TMF IO is broken by some operations such as injecting controller reset
from HW RAs event, the TMF IO will be timeout, and at last device will be
gone. Print is as followed:
hisi_sas_v3_hw 0000:74:02.0: dev[240:1] found
...
hisi_sas_v3_hw 0000:74:02.0: controller resetting...
hisi_sas_v3_hw 0000:74:02.0: phyup: phy7 link_rate=10(sata)
hisi_sas_v3_hw 0000:74:02.0: phyup: phy0 link_rate=9(sata)
hisi_sas_v3_hw 0000:74:02.0: phyup: phy1 link_rate=9(sata)
hisi_sas_v3_hw 0000:74:02.0: phyup: phy2 link_rate=9(sata)
hisi_sas_v3_hw 0000:74:02.0: phyup: phy3 link_rate=9(sata)
hisi_sas_v3_hw 0000:74:02.0: phyup: phy6 link_rate=10(sata)
hisi_sas_v3_hw 0000:74:02.0: phyup: phy5 link_rate=11
hisi_sas_v3_hw 0000:74:02.0: phyup: phy4 link_rate=11
hisi_sas_v3_hw 0000:74:02.0: controller reset complete
hisi_sas_v3_hw 0000:74:02.0: abort tmf: TMF task timeout and not done
hisi_sas_v3_hw 0000:74:02.0: dev[240:1] is gone
sas: driver on host 0000:74:02.0 cannot handle device 5000c500a75a860d,
error:5
To improve the reliability, retry TMF IO max of 3 times for SAS disks which
is the same as softreset does."
scsi: hisi_sas: Retry 3 times TMF IO for SAS disks when init device
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