Public bug reported:
deployment via MAAS is failing after config storage stage - when trying
to deploy Ubuntu 26.04 LTS Resolute Raccoon:
Tue, 07 Apr. 2026 17:51:18 Node changed status - From 'Deploying' to
'Failed deployment'
Tue, 07 Apr. 2026 17:51:18 Marking node failed - Installation failed
(refer to the installation log for more information).
Tue, 07 Apr. 2026 17:51:18 Script - /tmp/curtin-logs.tar failed
Tue, 07 Apr. 2026 17:51:18 Script - /tmp/install.log failed
Tue, 07 Apr. 2026 17:51:18 Node installation failure - 'curtin' curtin
command install
Tue, 07 Apr. 2026 17:51:16 Node status event - 'curtin' curtin command
block-meta
Tue, 07 Apr. 2026 17:51:16 Node status event - 'curtin' running 'curtin
block-meta custom'
Tue, 07 Apr. 2026 17:51:16 Node status event - 'curtin' removing previous
storage devices
Tue, 07 Apr. 2026 17:51:16 Node status event - 'curtin' configuring storage
Tue, 07 Apr. 2026 17:51:16 Node status event - 'curtin' removing previous
storage devices
Tue, 07 Apr. 2026 17:51:11 Node status event - 'curtin' running 'curtin
block-meta custom'
Tue, 07 Apr. 2026 17:51:11 Node status event - 'curtin' curtin command
block-meta
Tue, 07 Apr. 2026 17:51:11 Node status event - 'curtin' running 'sh -c
echo third party drivers not installed or necessary.'
Tue, 07 Apr. 2026 17:51:11 Node installation - 'curtin' configuring storage
Tue, 07 Apr. 2026 17:51:11 Configuring storage
```
[ 164.767193] cloud-init[1677]: finish:
cmd-install/stage-partitioning/builtin/cmd-block-meta/clear-holders: FAIL:
removing previous storage devices
[ 164.770359] cloud-init[1677]: TIMED BLOCK_META: 4.683
[ 164.771007] cloud-init[1677]: finish:
cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: curtin command
block-meta
[ 164.775213] cloud-init[1677]: Traceback (most recent call last):
[ 164.776814] cloud-init[1677]: File "/curtin/curtin/commands/main.py", line
202, in main
[ 164.780094] cloud-init[1677]: ret = args.func(args)
[ 164.780204] cloud-init[1677]: File "/curtin/curtin/log.py", line 97, in
wrapper
[ 164.780286] cloud-init[1677]: return log_time("TIMED %s: " % msg, func,
*args, **kwargs)
[ 164.780368] cloud-init[1677]: File "/curtin/curtin/log.py", line 79, in
log_time
[ 164.780447] cloud-init[1677]: return func(*args, **kwargs)
[ 164.780523] cloud-init[1677]: File
"/curtin/curtin/commands/block_meta.py", line 115, in block_meta
[ 164.780609] cloud-init[1677]: meta_clear(devices,
state.get('report_stack_prefix', ''))
[ 164.780691] cloud-init[1677]:
~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 164.780798] cloud-init[1677]: File
"/curtin/curtin/commands/block_meta.py", line 2144, in meta_clear
[ 164.781000] cloud-init[1677]: clear_holders.start_clear_holders_deps()
[ 164.781101] cloud-init[1677]: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
[ 164.784258] cloud-init[1677]: File
"/curtin/curtin/block/clear_holders.py", line 708, in start_clear_holders_deps
[ 164.784489] cloud-init[1677]: util.load_kernel_module('bcache')
[ 164.784572] cloud-init[1677]: ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^
[ 164.784650] cloud-init[1677]: File "/curtin/curtin/util.py", line 344, in
load_kernel_module
[ 164.784732] cloud-init[1677]: subp(['modprobe', '--use-blacklist',
module])
[ 164.784815] cloud-init[1677]:
~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ 164.784911] cloud-init[1677]: File "/curtin/curtin/util.py", line 280, in
subp
[ 164.785014] cloud-init[1677]: return _subp(*args, **kwargs)
[ 164.785103] cloud-init[1677]: File "/curtin/curtin/util.py", line 144, in
_subp
[ 164.785201] cloud-init[1677]: raise ProcessExecutionError(stdout=out,
stderr=err,
[ 164.785437] cloud-init[1677]: exit_code=rc,
[ 164.785533] cloud-init[1677]: cmd=args)
[ 164.785655] cloud-init[1677]: curtin.util.ProcessExecutionError: Unexpected
error while running command.
[ 164.787075] cloud-init[1677]: Command: ['modprobe', '--use-blacklist',
'bcache']
[ 164.787171] cloud-init[1677]: Exit code: 1
[ 164.787249] cloud-init[1677]: Reason: -
[ 164.787330] cloud-init[1677]: Stdout: ''
[ 164.787411] cloud-init[1677]: Stderr: ''
[ 164.787484] cloud-init[1677]: Unexpected error while running command.
[ 164.787561] cloud-init[1677]: Command: ['modprobe', '--use-blacklist',
'bcache']
[ 164.787642] cloud-init[1677]: Exit code: 1
[ 164.787707] cloud-init[1677]: Reason: -
[ 164.787765] cloud-init[1677]: Stdout: ''
[ 164.787824] cloud-init[1677]: Stderr: ''
[ 164.805058] cloud-init[1677]: builtin command failed
[ 164.805255] cloud-init[1677]: finish:
cmd-install/stage-partitioning/builtin: FAIL: running 'curtin block-meta custom'
```
MAAS version: 3.7.1
** Affects: ubuntu-power-systems
Importance: Undecided
Status: New
** Affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2147471
Title:
not able to deploy 26.04 LTS Resolute Raccoon `FAIL: removing previous
storage devices`
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