Re: [REGRESSION] 6.7.1: md: raid5 hang and unresponsive system; successfully bisected

On 21.02.2024 00:15, junxiao.bi@oracle.com wrote:

The thing is we can't reproduce this issue at all. If you can generate a vmcore when the hung happened, then we can review which processes are stuck.

Hi, don't know if that be any of help, but I run below scenario with SATA and NVMe drives. For me, the issue is reproducible on NVMe drives only.

Scenario: 1. Create R5D3 with native metadata     # mdadm -CR /dev/md/vol -l5 -n3 /dev/nvme[0-2]n1 --assume-clean 2. Create FS on the array     # mkfs.ext4 /dev/md/vol -F 3. Remove single member drive via "--incremental --fail"     # mdadm -If nvme0n1

The result is almost instant.

Thanks, Mateusz