[PATCH-SERIES qemu-server 0/6] migration: strict config check for intra-cluster migration

[Fiona Ebner <f.ebner@proxmox.com>]

For remote migration, we already check that the config can be parsed
on the target. Do the same for intra-cluster migration, to avoid
issues like [0] for future new settings, with lines being unexpectedly
and relatively silently dropped (there are warnings in the target's
system logs).

The first few patches are cleanups/tiny improvements that would be
nice to have in any case.

Unfortunately, before patch "qm: mtunnel: reply when a command is
unknown", when a command is unknown, mtunnel did not reply at all.
Therefore, this delays backwards migrations to qemu-server versions
less than the next bumped version (at the time of this writing
expected to be 9.1.5) by 3 seconds.

I opted for 3 seconds, since config parsing should be very quick and
5 seconds would still be very noticeable for a bulk migration of VMs
on a shared storage with a fast network. Right now, the option won't
help anyways, only once we add a new config option (at which point
we could bump it to 5 seconds).

[0]: https://bugzilla.proxmox.com/show_bug.cgi?id=7341

qemu-server:

Fiona Ebner (6):
  d/control: bump versioned build dependency for libpve-common-perl to
    9.0.12
  tests: migration: get rid of mocking for removed
    PVE::QemuMigrate::read_tunnel()
  qm: mtunnel: avoid using deprecated check_running() helper
  mtunnel: add 'conf' command to do strict configuration parsing
  qm: mtunnel: reply when a command is unknown
  migration: intra-cluster: check config can be parsed on target node

 debian/control                            |  2 +-
 src/PVE/API2/Qemu.pm                      |  4 +++-
 src/PVE/CLI/qm.pm                         | 21 ++++++++++++++++++---
 src/PVE/QemuMigrate.pm                    | 23 +++++++++++++++++++++++
 src/test/MigrationTest/QemuMigrateMock.pm | 14 ++++++++++----
 5 files changed, 55 insertions(+), 9 deletions(-)


Summary over all repositories:
  5 files changed, 55 insertions(+), 9 deletions(-)

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