Public bug reported:
A freshly build Ubuntu 17.10 image that's configured to boot without
initramfs by passing root=PARTUUID=<uuid> on the kernel commandline
comes up degraded because cloud-init fails to resize the root partition.
Oct 20 00:07:30 ubuntu cloud-init[493]: 2017-10-20 00:07:30,656 -
util.py[WARNING]: Failed to resize filesystem (cmd=('resize2fs', '/dev/root'))
Oct 20 00:07:30 ubuntu cloud-init[493]: 2017-10-20 00:07:30,662 -
util.py[WARNING]: Running module resizefs (<module
'cloudinit.config.cc_resizefs' from
'/usr/lib/python3/dist-packages/cloudinit/config/cc_resizefs.py'>) failed
Looking at the code, I see that there are two separate implementations
of rootdev_from_cmdline, one in cloudinit/util.py and one in
cloudinit/config/cc_resizefs.py; and the second does not handle
partuuid.
>>> from cloudinit.util import rootdev_from_cmdline
>>> rootdev_from_cmdline('BOOT_IMAGE=/boot/vmlinuz-4.4.0-1007-kvm
>>> root=PARTUUID=f122607f-3631-4411-bd34-de4bed76e0f7 ro console=tty1
>>> console=ttyS0 systemd.log_level=debug')
'/dev/disk/by-partuuid/f122607f-3631-4411-bd34-de4bed76e0f7'
>>> from cloudinit.config.cc_resizefs import rootdev_from_cmdline
>>> rootdev_from_cmdline('OT_IMAGE=/boot/vmlinuz-4.4.0-1007-kvm
>>> root=PARTUUID=f122607f-3631-4411-bd34-de4bed76e0f7 ro console=tty1
>>> console=ttyS0 systemd.log_level=debug')
'/dev/PARTUUID=f122607f-3631-4411-bd34-de4bed76e0f7'
>>>
This is related to bug #1684869; I'm not sure if it's the same bug
reintroduced or if was never fixed properly on trunk (17.1).
** Affects: cloud-init
Importance: Undecided
Status: New
** Affects: cloud-init (Ubuntu)
Importance: Medium
Status: New
** Also affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
** Changed in: cloud-init (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1725067
Title:
cloud-init resizefs fails when booting with root=PARTUUID=
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