** Description changed:
I am testing Ubuntu 26.10/stonking on s390x these days
and used the latest image that I can find (Aug 31st).
But the installation is crashing.
An subiquity update is offered during interactive install,
but the installation break with or without accepting it.
I attached the content of /var/crash and /var/log.
The issue is disk/block probe related:
1788252418.448719263.disk_probe_fail.crash
1788252418.448719263.disk_probe_fail.meta
1788252500.447848558.block_probe_fail.crash
1788252500.447848558.block_probe_fail.meta
1788252639.329090118.block_probe_fail.crash
1788252639.329090118.block_probe_fail.meta
1788252639.666546345.disk_probe_fail.crash
1788252639.666546345.disk_probe_fail.meta
1788253504.958242416.block_probe_fail.crash
1788253504.958242416.block_probe_fail.meta
1788253505.330215454.disk_probe_fail.crash
1788253505.330215454.disk_probe_fail.meta
+
+
+ 2026-09-01 08:48:19,558 DEBUG probert.multipath:48 Extracted multipath maps
fields: ['ok']
+ 2026-09-01 08:48:19,558 DEBUG probert.multipath:52 Failed to parse multipath
maps entry: ok: MMap.__new__() missing 2 required positional arguments: 'sysfs'
and 'paths'
+ 2026-09-01 08:48:19,561 DEBUG probert.multipath:48 Extracted multipath paths
fields: ['sdc', '75MGZ71010E', '[orphan]', '0x5005076400c711b8',
'0x500507630bffd3d7', '0xc05076ca0900006d', '0x500507630b1013d7', '0.0.0001']
+ 2026-09-01 08:48:19,561 DEBUG probert.multipath:48 Extracted multipath paths
fields: ['sdd', '75MGZ71010E', '[orphan]', '0x5005076400c711b8',
'0x500507630bffd3d7', '0xc05076ca0900006d', '0x500507630b1813d7', '0.0.0001']
+ 2026-09-01 08:48:19,561 DEBUG probert.multipath:48 Extracted multipath paths
fields: ['sda', '75MGZ71010E', '[orphan]', '0x5005076400c711b8',
'0x500507630bffd3d7', '0xc05076ca0900006b', '0x500507630b1053d7', '0.0.0002']
+ 2026-09-01 08:48:19,561 DEBUG probert.multipath:48 Extracted multipath paths
fields: ['sdb', '75MGZ71010E', '[orphan]', '0x5005076400c711b8',
'0x500507630bffd3d7', '0xc05076ca0900006b', '0x500507630b1853d7', '0.0.0002']
+ 2026-09-01 08:48:19,821 DEBUG subiquity.server.controllers.integrity:67
casper-md5check results: {'checksum_missmatch': [], 'result': 'pass'}
+ 2026-09-01 08:48:19,869 WARNING subiquity.server.geoip:120 geoip lookup
failed:
ClientResponseError(RequestInfo(url=URL('https://geoip.ubuntu.com/lookup'),
method='GET', headers=<CIMultiDictProxy('Host': 'geoip.ubuntu.com', 'Accept':
'*/*', 'Accept-Encoding': 'gzip, deflate', 'User-Agent': 'Python/3.12
aiohttp/3.9.1')>, real_url=URL('https://geoip.ubuntu.com/lookup')), (),
status=404, message='Not Found', headers=<CIMultiDictProxy('Date': 'Tue, 01 Sep
2026 08:46:57 GMT', 'Server': 'Apache/2.4.29 (Ubuntu)', 'Transfer-Encoding':
'chunked', 'Content-Type': 'text/xml')>)
+ 2026-09-01 08:48:20,091 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdc1:Command '['sfdisk', '--bytes', '--json', '/dev/sdc1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,093 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdc2:Command '['sfdisk', '--bytes', '--json', '/dev/sdc2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,107 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdd1:Command '['sfdisk', '--bytes', '--json', '/dev/sdd1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,109 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdd2:Command '['sfdisk', '--bytes', '--json', '/dev/sdd2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,119 ERROR probert.storage:121 Failed to probe partition
table on /dev/sda1:Command '['sfdisk', '--bytes', '--json', '/dev/sda1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,121 ERROR probert.storage:121 Failed to probe partition
table on /dev/sda2:Command '['sfdisk', '--bytes', '--json', '/dev/sda2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,134 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdb1:Command '['sfdisk', '--bytes', '--json', '/dev/sdb1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,137 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdb2:Command '['sfdisk', '--bytes', '--json', '/dev/sdb2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,143 ERROR probert.storage:121 Failed to probe partition
table on /dev/dm-0:Command '['sfdisk', '--bytes', '--json', '/dev/dm-0']'
returned non-zero exit status 1.
+
+ ...
+
+ 2026-09-01 08:48:20,440 ERROR root:38 finish:
subiquity/Storage/_probe/probe_once: FAIL: Invalid dep_id
(lvm-partition-ubuntu-lv) not in storage config
+ 2026-09-01 08:48:20,440 ERROR block-discover:2177 block probing failed
restricted=False
+ Traceback (most recent call last):
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/subiquity/server/controllers/storage.py",
line 2175, in _probe
+ await asyncio.wait_for(self._probe_once_task.task, probert_timeout)
+ File "/snap/subiquity/7410/usr/lib/python3.12/asyncio/tasks.py", line 520,
in wait_for
+ return await fut
+ ^^^^^^^^^
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/subiquitycore/context.py",
line 165, in decorated_async
+ return await meth(self, **kw)
+ ^^^^^^^^^^^^^^^^^^^^^^
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/subiquity/server/controllers/storage.py",
line 2148, in _probe_once
+ self.model.load_probe_data(storage)
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/subiquity/models/storage.py",
line 2225, in load_probe_data
+ self.reset()
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/subiquity/models/storage.py",
line 1639, in reset
+ self.process_probe_data()
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/subiquity/models/storage.py",
line 1675, in process_probe_data
+ self._orig_config =
storage_config.extract_storage_config(self._probe_data)[
+
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/curtin/storage_config.py",
line 1522, in extract_storage_config
+ tree = get_config_tree(cfg.get('id'), final_config)
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/curtin/storage_config.py",
line 315, in get_config_tree
+ for dep in find_item_dependencies(item, sconfig):
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/curtin/storage_config.py",
line 285, in find_item_dependencies
+ _validate_dep_type(item_id, dep_key, dep, config)
+ File
"/snap/subiquity/7410/lib/python3.12/site-packages/curtin/storage_config.py",
line 232, in _validate_dep_type
+ raise ValueError(
+ ValueError: Invalid dep_id (lvm-partition-ubuntu-lv) not in storage config
+ 2026-09-01 08:48:20,447 DEBUG subiquity.common.errorreport:391 generating
crash report
+ 2026-09-01 08:48:20,448 INFO subiquity.common.errorreport:417 saving crash
report 'block probing crashed with ValueError' to
/var/crash/1788252500.447848558.block_probe_fail.crash
+ 2026-09-01 08:48:20,448 DEBUG subiquity.server.controllers.storage:2186
block probing took 0.9 seconds
+ 2026-09-01 08:48:20,449 DEBUG subiquity.server.controllers.storage:2487
start_monitor
+ 2026-09-01 08:48:20,449 INFO root:38 start:
subiquity/ErrorReporter/1788252500.447848558.block_probe_fail/add_info:
+ 2026-09-01 08:48:20,449 DEBUG root:38 start:
subiquity/Storage/_probe/probe_once: restricted=True
+ 2026-09-01 08:48:20,450 DEBUG asyncio:64 Using selector: EpollSelector
+ 2026-09-01 08:48:20,468 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdc1:Command '['sfdisk', '--bytes', '--json', '/dev/sdc1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,471 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdc2:Command '['sfdisk', '--bytes', '--json', '/dev/sdc2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,484 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdd1:Command '['sfdisk', '--bytes', '--json', '/dev/sdd1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,487 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdd2:Command '['sfdisk', '--bytes', '--json', '/dev/sdd2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,496 ERROR probert.storage:121 Failed to probe partition
tab
+ 2026-09-01 08:48:20,498 ERROR probert.storage:121 Failed to probe partition
table on /dev/sda2:Command '['sfdisk', '--bytes', '--json', '/dev/sda2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,511 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdb1:Command '['sfdisk', '--bytes', '--json', '/dev/sdb1']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,514 ERROR probert.storage:121 Failed to probe partition
table on /dev/sdb2:Command '['sfdisk', '--bytes', '--json', '/dev/sdb2']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,520 ERROR probert.storage:121 Failed to probe partition
table on /dev/dm-0:Command '['sfdisk', '--bytes', '--json', '/dev/dm-0']'
returned non-zero exit status 1.
+ 2026-09-01 08:48:20,528 DEBUG curtin:1471 Extracting storage config from
probe data
+ 2026-09-01 08:48:20,528 WARNING curtin:441 probe_data missing bcache data
+ 2026-09-01 08:48:20,528 DEBUG curtin:73 /dev/sdc is multipath device member?
False
** Also affects: probert (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2165993
Title:
Ubuntu 26.10/stonking installation (image from Aug 31st) crashs on
s390x
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