Hi Changhui Thanks for confirming this. md raid has a change which guarantee device node (/dev/md0) can be removed when stopping array 9e59d609763f (md: call del_gendisk in control path) The change is good, but this change introduces a problem as you see. So I fixed the problem by https://github.com/md-raid-utilities/mdadm/pull/182. Now we don't need any change. Regards Xiao On Thu, Jul 24, 2025 at 3:53 PM Changhui Zhong <czhong@xxxxxxxxxx> wrote: > > Hi,Xiao > > yes, succeed assemble RAID array with the latest upstream mdadm, > # mdadm -A /dev/md0 /dev/sda /dev/sdb > mdadm: /dev/md0 has been started with 2 drives. > # mdadm -V > mdadm - v4.4-55-g787cc1b6 - 2025-07-09 > > if not install the latest upstream mdadm, > this issue will be hit in the upstream kernel git/axboe/linux-block.git， > but not triggered in git/torvalds/linux.git， > > is there anything that need to be fixed in git/axboe/linux-block.git? > > Thanks， > > On Thu, Jul 24, 2025 at 3:18 PM Xiao Ni <xni@xxxxxxxxxx> wrote: > > > > Hi Changhui > > > > I guess you need to use the latest upstream mdadm. Could you have a > > try with https://github.com/md-raid-utilities/mdadm/ > > > > Regards > > Xiao > > > > On Thu, Jul 24, 2025 at 3:07 PM Changhui Zhong <czhong@xxxxxxxxxx> wrote: > > > > > > Hello, > > > > > > mdadm fails to initialize the sysfs interface while attempting to > > > assemble a RAID array, > > > please help check and let me know if you need any info/test, thanks. > > > > > > repo: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git > > > branch: for-next > > > INFO: HEAD of cloned kernel > > > commit a8fa1731867273dd09125fd23cc1df4c33a7dcc3 > > > Merge: b41d70c8f7bf 5ec9d26b78c4 > > > Author: Jens Axboe <axboe@xxxxxxxxx> > > > Date: Tue Jul 22 19:10:37 2025 -0600 > > > > > > Merge branch 'for-6.17/block' into for-next > > > > > > reproducer: > > > # mdadm -CR /dev/md0 -l 1 -n 2 /dev/sdb /dev/sdc -e 1.0 > > > mdadm: array /dev/md0 started. > > > # mdadm -S /dev/md0 > > > mdadm: stopped /dev/md0 > > > # mdadm -A /dev/md0 /dev/sdb /dev/sdc > > > mdadm: Unable to initialize sysfs > > > # rpm -qa | grep mdadm > > > mdadm-4.4-2.el10.x86_64 > > > > > > and not hit this issue with upstream kernel > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > > > > > > > Best Regards, > > > Changhui > > > > > >
