Public bug reported: The issue has been observed on 2.3.7 (Ubuntu 20.04). Reported to lvm team: https://bugzilla.redhat.com/show_bug.cgi?id=1855251
Steps to Reproduce: 1. Create IMSM raid array: #mdadm -CR imsm -e imsm -n2 /dev/nvme[01]n1 #mdadm -CR vol -l1 -n2 /dev/nvme[01]n1 -z 5G 2. Create lvm volume on raid: # pvcreate -ff -y /dev/md/vol # vgcreate group0 /dev/md/vol # lvcreate -Z y -y -l +100%FREE group0 -n lvm0 Actual results: Vg creation fails. Expected results: LVM should be able to determine the best drive and ignore duplicates. Additional info: IMSM metadata is written at the end of the drive. The first drive sector belongs to the raid volume and other metadata saved there (like lvm) can be recognized directly on raid members. The following patches should fix the issue (not verified yet): https://sourceware.org/git/?p=lvm2.git;a=commit;h=23774f997ea077f2cbe8a32bd8bccdd7f4560cca https://sourceware.org/git/?p=lvm2.git;a=commit;h=00c9a788cc617e5e40746dee2e17287d61ee5c81 ** Affects: lvm2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1887372 Title: Cannot create lvm opon IMSM raid array To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1887372/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
