This is working correctly. Marking as verification-done. After partitioning with parted, there's only one device node for the partition (with the -part disk-partition separator).
There's /still/ some messages in parted mentioning it could not find the device, but the partitions are created correctly -- note those messages were already present in the original bug report, so this is not a regression. # multipath -l mpath1 mpath1 (0QEMU QEMU HARDDISK trustytest) dm-0 QEMU ,QEMU HARDDISK size=8.0G features='0' hwhandler='0' wp=rw |-+- policy='round-robin 0' prio=-1 status=active | `- 0:0:3:0 sdf 8:80 active undef running `-+- policy='round-robin 0' prio=-1 status=enabled `- 0:0:2:0 sde 8:64 active undef running # ls -l /dev/mapper/mpath1* brw-rw---- 1 root disk 252, 0 Feb 9 10:55 /dev/mapper/mpath1 # parted /dev/mapper/mpath1 GNU Parted 2.3 Using /dev/mapper/mpath1 Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Error: /dev/mapper/mpath1: unrecognised disk label (parted) mklabel msdos (parted) p Model: Linux device-mapper (multipath) (dm) Disk /dev/mapper/mpath1: 8590MB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags (parted) mkpart Partition type? primary/extended? primary File system type? [ext2]? Start? 0% End? 10% Device /dev/mapper/mpath1-part1 not found device-mapper: table ioctl on failed: No such device or address Device /dev/mapper/mpath1-part1 not found device-mapper: table ioctl on failed: No such device or address (parted) p Model: Linux device-mapper (multipath) (dm) Disk /dev/mapper/mpath1: 8590MB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 859MB 858MB primary (parted) q Information: You may need to update /etc/fstab. # ls -l /dev/mapper/mpath1* brw-rw---- 1 root disk 252, 0 Feb 9 11:00 /dev/mapper/mpath1 lrwxrwxrwx 1 root root 7 Feb 9 11:00 /dev/mapper/mpath1-part1 -> ../dm-5 After some more play, all correct: only 1 node per partition (-part). # ls -l /dev/mapper/mpath1* brw-rw---- 1 root disk 252, 0 Feb 9 11:05 /dev/mapper/mpath1 lrwxrwxrwx 1 root root 7 Feb 9 11:00 /dev/mapper/mpath1-part1 -> ../dm-5 lrwxrwxrwx 1 root root 7 Feb 9 11:04 /dev/mapper/mpath1-part2 -> ../dm-6 lrwxrwxrwx 1 root root 7 Feb 9 11:05 /dev/mapper/mpath1-part3 -> ../dm-7 lrwxrwxrwx 1 root root 7 Feb 9 11:05 /dev/mapper/mpath1-part5 -> ../dm-8 ** Tags removed: verification-needed ** Tags added: verification-done -- 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/1473903 Title: parted will generate two devices when adding one partition on mpath device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1473903/+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