Test it as boot int OS with selected 99 kernel, insert SATA and remove
SATA, run sosreport.
** Attachment added: "sosrport for 5.4.0-99 kernel which hotplug does work"
Test it as boot int OS with selected 100 kernle, insert SATA and remove
SATA, run sosreport.
** Attachment added: "sosrport for 5.4.0-100 kernel which hotplug doesn't work"
I was told the test are boot into OS with select kernel, insert sata,
remove, and run sosreport. Below is syslog info related to boot and sdb
or sdc.
--sata hotplug didn't work on 100 kernel --
grep -e 'Linux version' -e 'sdb' -e 'sdc' -e 'SATA link' syslog | tail -n25
May 6 07:24:42 rd1
Partner have verified that 5.4.0-99 hotplug works, while 5.4.0-100
doesn't
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https://bugs.launchpad.net/bugs/1971576
Title:
SATA device hot plug regression on AMD EYPC (Asus) server
To
For Rome, it is the same as Melian which the 20.04.4 kernel
5.4.0-42-generic can work with hotplug, while kernel 5.4.0-109-generic
does't.
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Title:
Hello @zhanglei-mao thanks for creating the bug report.
There is a large time difference between those 5.4 kernels. 5.4.0-42 is
from June 2020 and 5.4.0-109 is very recent. Is it possible to find out
the first non-working 5.4 kernel? We would need to do a bisect.
Do you think you might be able
more test as below:
5.11.0-27 hotplug works
5.13.0-40 hotplug doesn't work
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https://bugs.launchpad.net/bugs/1971576
Title:
SATA device hot plug regression on AMD EYPC (Asus) server
Below is full sosreports of our test. Test and log please refer to last
2 boot (42 and 109 kernel)
May 4 05:49:11 rd1 kernel: [0.00] Linux version
5.4.0-42-generic (buildd@lgw01-amd64-038) (gcc version 9.3.0 (Ubuntu
9.3.0-10ubuntu2)) #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 (Ubuntu
For 5.4.0-109 kernel, if "rescan-scsi-bus" after plug in, it can find
disk.
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Title:
SATA device hot plug regression on AMD EYPC (Asus) server
5. un-plugin sata disk; restart system
6. restart and boot into 5.4.0-109 kernel
7. login and monitor kernel log like sudo tail -f /var/log/syslog
8. plug in sata disk, there no similar log and no disk was found.
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Bugs,
reproduce method
1. On Ubuntu 20.04, install both 5.4.0-42 and 5.4.0-109 kernel
2. restart and boot into 5.4.0-42 kernel via grub menu
3. login and monitor kernel log like sudo tail -f /var/log/syslog
4. plug in sata disk, the log showed disk was dected like below:
---
May 4
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