I don't think you need to upgrade at all, your multipathd is sufficiently modern and not much different from the version in 12.04.
Interesting, I see that you're using user_friendly_names, though since you're also using LVM, it kind of makes that feature redundant as the LVM is now your user friendly name, and having that multipath feature adds another level of complexity when UDEV is creating devices. Please set "user_friendly_names no" in /etc/multipath.conf, and update your initrd "update-initramfs -k all -u". The last part is important as the multipath.conf is copied to the initrd and used as the basis for any blacklists or additional UDEV juggling. What might have happened is you didn't update the initrd since you created the initial multipath config. Since the default is no, the ramdisk creates the normal long style WWID names, then it mounts root, multipathd starts which finds user friendly names set and then begins destroying the original WWID names in exchange for the mpathx versions. If LVM has claimed the MP device by then, destruction of the original name (and dmtable entry) will be blocked by reference counting. In general, it's imperative that you update the initramfs whenever lvm.conf or multipath.conf is changed, especially when you're using them together. https://help.ubuntu.com/12.04/serverguide/multipath-devices.html #multipath-devices-in-logical-volumes Also, please adjust your local character encoding to a western font. Some of your text files look like gibberish e.g. https://launchpadlibrarian.net/103100334/test_before_after_lvm_reboot.txt a¡±¡±a¡±€ (8:144) mpath9 (252:7) a¡±?a¡±€ (65:80) a¡±¡±a¡±€ (8:160) mpath15 (252:12) a¡±?a¡±€ (8:224) a¡±¡±a¡±€ (8:48) mpath5-part1 (252:10) a¡±¡±a¡±€mpath5 (252:2) a¡±?a¡±€ (65:16) a¡±¡±a¡±€ (8:96) mpath14-part1 (252:9) Thank you. -- Peter ** Changed in: multipath-tools (Ubuntu) Status: Confirmed => Incomplete ** Changed in: multipath-tools (Ubuntu) Assignee: (unassigned) => Peter Petrakis (peter-petrakis) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to multipath-tools in Ubuntu. https://bugs.launchpad.net/bugs/985741 Title: multipath can't show device on which is setup lvm To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/985741/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
