Sorry, I can't answer that for huge LVM installations. But what I can say is that it is for s390x installations (multipath with LVMs on top) a kind of immediately responding.
One thought is to check/do this for example at the end of the dist- upgrade process, where a potential delay wouldn't be a very huge drawback (compared to a system that doesn't come up again after reboot). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lvm2 in Ubuntu. https://bugs.launchpad.net/bugs/1874381 Title: LVM device unavailable after 18.04 to 20.04 upgrade Timed out waiting for device /dev/mapper/s5lp8--v g-home Status in Ubuntu on IBM z Systems: Confirmed Status in lvm2 package in Ubuntu: Confirmed Status in lvm2 source package in Focal: Confirmed Bug description: After upgrading an LPAR configured with LVM from 18.04 to 20.04 /home is no longer mounted. During boot the console shows Timed out waiting for device /dev/mapper/s5lp8--vg-home Please see the attached dist-upgrade logs and console output for more detail. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1874381/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
