Update to Lenovo validation of Ubuntu <locally built test kernel>
A. Our validation steps with config_B. <locally built test kernel>
1. Install ubuntu-26.04-GA.iso on a non-VROC enabled NVMe drive (to make sure
we can collect log files)
2. Install the provided deb package:
linux-image-7.1.0-rc4+_7.1.0~rc4-00098-gf4790477726f-43_Bmd64.deb
3. reboot uname -r to check the kernel version
4. Collect dmesg, lspci -vvv, lsblk, nvme list, zip and name this set of log
file as 1-config_B.before_unplug.log
5. Test hot-plugging of VROC NVMe drives and collect logs.
Note, we leave 120 seconds between each unplug / re-plug actions:
a. unplug
b. Collect dmesg, lspci -vvv, lsblk, nvme list, zip and name this set of log
file as 2-1-config_B.after_unplug.log
c. re-plug
d. Collect dmesg, lspci -vvv, lsblk, nvme list, zip and name this set of log
file as 3-1-config_B.after_replug.log
e. Repeat step 5 (and carefully naming the different batch of log files)
until problem happens and even worse
6. Error symptoms after reboot the system
a. After performing the first reboot, the system froze during the shutdown
process.
b. When forced to restart, it went black with no display after the POST.
c. After forcibly shutting down, we unplugged the NVME hard drive.
d. The first reboot after NVME hard drive unplug, it went black with no
display after the POST.
e. Then forcibly shutting down the system again.
f. The second time the system was rebooted, it went to the Ubuntu display
and the boot menu.
g. When entering the system, it went black with no display.
h. After waiting for 5 minutes, the system was forcibly shut down.
i. On the 4th reboot, approximately 20 minutes later, the system
successfully entered the system. Collect dmesg, lspci -vvv, lsblk, nvme list,
zip and name this set of log file as 4-config_B.after_reboot.log
7. Reinsert the NVMe hard drives. Insert three pieces. They are all properly
recognized.
8. Anyway, trying again with NVMe hot-swapping will result in the same problems
that occurred previously. Collect dmesg, lspci -vvv, lsblk, nvme list, and zip
them into the set of log file 4-config_B.after_reboot.log
B. Note, we performed 3 times of NVME disk unplug-replug validation operations
during the above step 5, all showed disk-unrecognized/lost issue. And finally,
we also did system reboots and NVMe hot-swapping after reboots, as mentioned in
the step 7 and 8.
The logs were collected according to the validation timing sequence, as:
1-config_B.before_unplug.log
2-1-config_B.after_unplug.log-The first time
3-1-config_B.after_replug.log-The first time
2-2-config_B.after_unplug.log-The second time
3-2-config_B.after_replug.log-The second time
2-3-config_B.after_unplug.log-The third time
3-3-config_B.after_replug.log-The third time
4-config_B.after_reboot.log
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You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2148638
Title:
ubuntu 26.04 - When the NVME hard drives were hot-swapped, the OS
reported an error and some of the drives were not recognized.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2148638/+subscriptions
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