@ddstreet Thanks for your advice,
FYI, This symptom is only happening when backend storage is LVM, it is ok when we just use local storage And I've checked decoded string before but it was the same (error). LVM has error, local is ok But I'm trying to test you mentioned Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921658 Title: Can't compose kvm host with lvm storage on maas 2.8.4 To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1921658/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs