Marking as verification-done.
Details:
-------
qemu-kvm guest w/ rootfs on multipath
# mount | grep ' / '
/dev/mapper/mauricfo4--vg-root on / type ext4 (rw,errors=remount-ro)
# lvm pvdisplay | grep Name
PV Name /dev/mapper/mpath0-part3
VG Name mauricfo4-vg
the disk WWID contains spaces
# multipath -l
mpath0 (0QEMU QEMU HARDDISK trustyroot) dm-0 QEMU ,QEMU
HARDDISK
size=32G features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=-1 status=active
| `- 0:0:0:0 sda 8:0 active undef running
`-+- policy='round-robin 0' prio=-1 status=enabled
`- 0:0:1:0 sdb 8:16 active undef running
install new version
# apt-get install multipath-tools-boot=0.4.9-3ubuntu7.8
# dpkg -s kpartx | grep Version
Version: 0.4.9-3ubuntu7.8
remove multipath configuration (user_friendly_names, bindings, wwids)
from rootfs and initramfs
# rm -rf /etc/multipath*
# mount /boot
# update-initramfs -u
update-initramfs: Generating /boot/initrd.img-4.2.0-27-generic
verify
# reboot
...
Loading, please wait...
[ 0.482143] systemd-udevd[92]: starting version 204
Begin: Loading essential drivers ... done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top
... Begin: Loading multipath modules ...
[ 0.546011] device-mapper: multipath: version 1.9.0 loaded
Success: loaded module dm-multipath.
Failure: failed to load module dm-emc.
done.
Begin: Starting multipathd ... [ 0.558504] multipathd (125):
/proc/125/oom_adj is deprecated, please use /proc/125/oom_score_adj instead.
[ 0.571510] device-mapper: multipath round-robin: version 1.0.0
loaded
[ 0.661820] random: lvm urandom read with 60 bits of entropy
available
[ 0.910243] random: nonblocking pool is initialized
done.
Begin: Running /scripts/local-premount ... Begin: Waiting for udev to
settle (multipath) ... done.
done.
[ 1.122520] EXT4-fs (dm-4): mounted filesystem with ordered data
mode. Opts: (null)
Begin: Running /scripts/local-bottom ... Begin: Stopping multipathd ...
done.
done.
done.
Begin: Running /scripts/init-bottom ... done.
[ 1.211793] init: plymouth-upstart-bridge main process (339)
terminated with status 1
[ 1.211889] init: plymouth-upstart-bridge main process ended,
respawning
[ 1.230100] init: plymouth-upstart-bridge main process (350)
terminated with status 1
[ 1.230199] init: plymouth-upstart-bridge main process ended,
respawning
[ 1.415024] Adding 1417152k swap on
/dev/mapper/mauricfo4--vg-swap_1. Priority:-1 extents:1 across:1417152k FS
[ 1.417519] EXT4-fs (dm-4): re-mounted. Opts: errors=remount-ro
Great, the rootfs is found and mounted.
Notice this setup (LVM on multipath) hits LP #1540401,
but non-LVM on multipath doesn't, as originally reported.
The disk drive for /boot is not ready yet or not present.
keys:Continue to wait, or Press S to skip mounting or M for manual
recovery
keys: S
And the system boots successfully:
# mount | grep ' / '
/dev/mapper/mauricfo4--vg-root on / type ext4 (rw,errors=remount-ro)
# pvdisplay | grep Name
PV Name /dev/HARDDISK
VG Name mauricfo4-vg
# multipath -l
0QEMU QEMU HARDDISK trustyroot dm-0 QEMU ,QEMU HARDDISK
size=32G features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=-1 status=active
| `- 0:0:0:0 sda 8:0 active undef running
`-+- policy='round-robin 0' prio=-1 status=enabled
`- 0:0:1:0 sdb 8:16 active undef running
Notice the LVM PV senses the multiple symlinks problem
(due to the spaces in the WWIDs) but this can be fixed
(if desired) on a later update,
and does not occur w/ user_friendly_names.
The system *is* bootable, and the device-mapper table is correct
(LVM stacked on multipath devices):
root@mauricfo4:~# dmsetup table | sort
0QEMU QEMU HARDDISK trustyroot: 0 67108864 multipath 0 0 2 1
round-robin 0 1 1 8:0 1000 round-robin 0 1 1 8:16 1000
0QEMU QEMU HARDDISK trustyroot-part1: 0 14336 linear 252:0 2048
0QEMU QEMU HARDDISK trustyroot-part2: 0 499712 linear 252:0 16384
0QEMU QEMU HARDDISK trustyroot-part3: 0 66590720 linear 252:0
516096
mauricfo4--vg-root: 0 63750144 linear 252:3 2048
mauricfo4--vg-swap_1: 0 2834432 linear 252:3 63752192
The boot problem is fixed.
Marking as verification-done.
** Tags removed: verification-needed
** Tags added: verification-done
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1432062
Title:
multipath-tools-boot: support booting without user_friendly_names on
devices with spaces in identifiers
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https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1432062/+subscriptions
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