Oh, good observation, Dan. Yes, it was happening on Cosmic and later.
But I cannot say when it started. Now in a moment of despair I tried
something very unorthodox: I copied udevadm from Bionic to the Eoan
image and ran the tests again. Look and behold, all pass.
** No longer affects: linux-azure (Ubuntu)
** Also affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1834875
Title:
cloud-init growpart race with udev
Status in cloud-init:
In Progress
Status in systemd package in Ubuntu:
New
Bug description:
On Azure, it happens regularly (20-30%), that cloud-init's growpart
module fails to extend the partition to full size.
Such as in this example:
========================================
2019-06-28 12:24:18,666 - util.py[DEBUG]: Running command ['growpart',
'--dry-run', '/dev/sda', '1'] with allowed return codes [0] (shell=False,
capture=True)
2019-06-28 12:24:19,157 - util.py[DEBUG]: Running command ['growpart',
'/dev/sda', '1'] with allowed return codes [0] (shell=False, capture=True)
2019-06-28 12:24:19,726 - util.py[DEBUG]: resize_devices took 1.075 seconds
2019-06-28 12:24:19,726 - handlers.py[DEBUG]: finish:
init-network/config-growpart: FAIL: running config-growpart with frequency
always
2019-06-28 12:24:19,727 - util.py[WARNING]: Running module growpart (<module
'cloudinit.config.cc_growpart' from
'/usr/lib/python3/dist-packages/cloudinit/config/cc_growpart.py'>) failed
2019-06-28 12:24:19,727 - util.py[DEBUG]: Running module growpart (<module
'cloudinit.config.cc_growpart' from
'/usr/lib/python3/dist-packages/cloudinit/config/cc_growpart.py'>) failed
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/cloudinit/stages.py", line 812, in
_run_modules
freq=freq)
File "/usr/lib/python3/dist-packages/cloudinit/cloud.py", line 54, in run
return self._runners.run(name, functor, args, freq, clear_on_fail)
File "/usr/lib/python3/dist-packages/cloudinit/helpers.py", line 187, in run
results = functor(*args)
File "/usr/lib/python3/dist-packages/cloudinit/config/cc_growpart.py", line
351, in handle
func=resize_devices, args=(resizer, devices))
File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2521, in
log_time
ret = func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/cloudinit/config/cc_growpart.py", line
298, in resize_devices
(old, new) = resizer.resize(disk, ptnum, blockdev)
File "/usr/lib/python3/dist-packages/cloudinit/config/cc_growpart.py", line
159, in resize
return (before, get_size(partdev))
File "/usr/lib/python3/dist-packages/cloudinit/config/cc_growpart.py", line
198, in get_size
fd = os.open(filename, os.O_RDONLY)
FileNotFoundError: [Errno 2] No such file or directory:
'/dev/disk/by-partuuid/a5f2b49f-abd6-427f-bbc4-ba5559235cf3'
========================================
@rcj suggested this is a race with udev. This seems to only happen on
Cosmic and later.
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