Comment 49 for bug 1869075

I must unfortunately say that curtin has still an issue:

Found invalid device mapper mp path: /dev/mapper/mpatha, removing
del_file: removed /dev/mapper/mpatha
multipath: regenerating symlink for /dev/mapper/mpatha (/dev/dm-0)
Running command ['udevadm', 'trigger', '--subsystem-match=block', '--action=add'
, '/sys/class/block/dm-0'] with allowed return codes [0] (capture=False)
Running command ['udevadm', 'settle', '--exit-if-exists=/dev/mapper/mpatha'] wit
h allowed return codes [0] (capture=False)
TIMED udevadm_settle(exists='/dev/mapper/mpatha'): 0.293
Failed to regenerate udev symlink /dev/mapper/mpatha
Running command ['pvscan', '--config', 'devices{ filter = [ "a|/dev/mapper/mpath.*|", "r|.*|" ] }'] with allowed return codes [0] (capture=True)
Running command ['vgscan', '--mknodes', '--config', 'devices{ filter = [ "a|/dev/mapper/mpath.*|", "r|.*|" ] }'] with allowed return codes [0] (capture=True)
Running command ['vgchange', '--activate=y', '--config', 'devices{ filter = [ "a|/dev/mapper/mpath.*|", "r|.*|" ] }'] with allowed return codes [0] (capture=True)
Running command ['udevadm', 'settle'] with allowed return codes [0] (capture=False)
TIMED udevadm_settle(): 0.028
Loading kernel module bcache via modprobe
Running command ['modprobe', '--use-blacklist', 'bcache'] with allowed return codes [0] (capture=False)
Loading kernel module zfs via modprobe
Running command ['modprobe', '--use-blacklist', 'zfs'] with allowed return codes [0] (capture=False)
zfs filesystem is not supported in this environment
Generating device storage trees for path(s): ['/dev/mapper/mpatha', '/dev/mapper/mpatha-part1']
finish: cmd-install/stage-partitioning/builtin/cmd-block-meta/clear-holders: FAI
L: removing previous storage devices
TIMED BLOCK_META: 2.258
finish: cmd-install/stage-partitioning/builtin/cmd-block-meta: FAIL: curtin command block-meta
Traceback (most recent call last):
  File "/snap/subiquity/1773/lib/python3.6/site-packages/curtin/commands/main.py", line 202, in main
    ret = args.func(args)
  File "/snap/subiquity/1773/lib/python3.6/site-packages/curtin/log.py", line 97, in wrapper
    return log_time("TIMED %s: " % msg, func, *args, **kwargs)
  File "/snap/subiquity/1773/lib/python3.6/site-packages/curtin/log.py", line 79, in log_time
    return func(*args, **kwargs)
  File "/snap/subiquity/1773/lib/python3.6/site-packages/curtin/commands/block_meta.py", line 96, in block_meta
    meta_clear(devices, state.get('report_stack_prefix', ''))
  File "/snap/subiquity/1773/lib/python3.6/site-packages/curtin/commands/block_meta.py", line 1832, in meta_clear
    clear_holders.clear_holders(devices)
  File "/snap/subiquity/1773/lib/python3.6/site-packages/curtin/block/clear_holders.py", line 611, in clear_holders
    holder_trees = [gen_holders_tree(path) for path in base_paths]

Attaching /var/log and /var/crash ...