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fedora-38-xfce fails to start with in-vm kernel and HVM virt_mode #8540

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marmarek opened this issue Sep 21, 2023 · 1 comment · May be fixed by QubesOS/qubes-core-agent-linux#457
Open

fedora-38-xfce fails to start with in-vm kernel and HVM virt_mode #8540

marmarek opened this issue Sep 21, 2023 · 1 comment · May be fixed by QubesOS/qubes-core-agent-linux#457
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affects-4.2 This issue affects Qubes OS 4.2. C: Fedora diagnosed Technical diagnosis has been performed (see issue comments). P: default Priority: default. Default priority for new issues, to be replaced given sufficient information. pr submitted A pull request has been submitted for this issue. T: bug Type: bug report. A problem or defect resulting in unintended behavior in something that exists.

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@marmarek
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Observation

openQA test in scenario qubesos-4.2-update-x86_64-system_tests_pvgrub_salt_storage@64bit fails in
TC_41_HVMGrub_fedora-38-xfce

# test_000_standalone_vm
# error: 

# timestamp 2023-09-19T07:04:30.840577
Traceback (most recent call last):
  File "/usr/lib/python3.11/site-packages/qubes/vm/qubesvm.py", line 1723, in start_qrexec_daemon
    await self.start_daemon(
  File "/usr/lib/python3.11/site-packages/qubes/vm/qubesvm.py", line 1696, in start_daemon
    raise subprocess.CalledProcessError(p.returncode, command,
subprocess.CalledProcessError: Command '['runuser', '-u', 'user', '--', '/usr/sbin/qrexec-daemon', '-q', '22', 'test-inst-vm1', 'user']' returned non-zero exit status 3.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.11/contextlib.py", line 81, in inner
    return func(*args, **kwds)
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/qubes/tests/integ/grub.py", line 109, in test_000_standalone_vm
    self.loop.run_until_complete(self.testvm1.start())
  File "/usr/lib64/python3.11/asyncio/base_events.py", line 653, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/qubes/vm/qubesvm.py", line 1253, in start
    await self.start_qrexec_daemon()
  File "/usr/lib/python3.11/site-packages/qubes/vm/qubesvm.py", line 1728, in start_qrexec_daemon
    raise qubes.exc.QubesVMError(
qubes.exc.QubesVMError: Cannot connect to qrexec agent for 120 seconds, see /var/log/xen/console/guest-test-inst-vm1.log for details

Similar test using PVH boot mode passes.

Reproducible

Fails since (at least) Build 2023081504-4.2

Expected result

Last good: 2023080804-4.2 (or more recent)

Further details

Always latest result in this scenario: latest

I suspect it's related to initramfs size - it's 61MB compressed. The difference between PVH and HVM can probably be explained with more memory used for some devices (videoram) and bookkeeping on Xen side - which is subtracted from VM memory.

Similar issue was happening in Debian: #8277
@marmarek marmarek added T: bug Type: bug report. A problem or defect resulting in unintended behavior in something that exists. C: Fedora affects-4.2 This issue affects Qubes OS 4.2. labels Sep 21, 2023
@marmarek
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It does not affect fedora-37 on R4.1. I haven't checked fedora-38 on R4.1, so I'm not sure yet whether it's about R4.1 vs R4.2, or fedora-37 vs fedora-38.

marmarek added a commit to marmarek/qubes-core-agent-linux that referenced this issue Sep 21, 2023
@marmarek
Limit initramfs size to fix booting with limited memory size
66f2a4f 
Fixes QubesOS/qubes-issues#8540
@marmarek marmarek linked a pull request Sep 21, 2023 that will close this issue
Draft
@andrewdavidwong andrewdavidwong added P: default Priority: default. Default priority for new issues, to be replaced given sufficient information. diagnosed Technical diagnosis has been performed (see issue comments). pr submitted A pull request has been submitted for this issue. labels Sep 21, 2023
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affects-4.2 This issue affects Qubes OS 4.2. C: Fedora diagnosed Technical diagnosis has been performed (see issue comments). P: default Priority: default. Default priority for new issues, to be replaced given sufficient information. pr submitted A pull request has been submitted for this issue. T: bug Type: bug report. A problem or defect resulting in unintended behavior in something that exists.
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Limit initramfs size to fix booting with limited memory size marmarek/qubes-core-agent-linux
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@marmarek @andrewdavidwong