[pve-devel] [PATCH v4 qemu-server, container, docs 0/12] migration: don't scan all storages, fail on aliases

Aaron Lauterer a.lauterer at proxmox.com
Fri Jun 16 11:56:56 CEST 2023

Oh boy did this version explode in number of commits.

This patch series changes the behavior during guest migrations:

Don't scan all storages for potential images belonging to the guest.
Only migrate images referenced in the config.
This made it necessary to handle pending changes explicitly which had
been covered by the storage scan.

We also added checks for any aliased volids and fail the migration if

The qemu-server part consists of quite a lot more commits since we had
to change a few things and for a better history, they are mostly their
own patches.

There is also a small patch for the documentation to add a hint that
aliased storages should be avoided.

changes since
- split it into many smaller commits
- changed / improved the handling of the 'ref's in
- fixed tests and added error handling in new mock functions
- rephrased the documentation hint

- style fixes
- qemu-server: mainly change the handling of pending changes
- container: use NEW_DISK_RE to check if the volume is a not yet created
pending volume

More in each patch.

qemu-server: Aaron Lauterer (9):
  migration: only migrate disks used by the guest
  qemuserver: foreach_volid: include pending volumes
  qemuserver: foreach_volid: always include pending disks
  qemuserver: foreach_volid: test regular config last
  migration: add target_storage_check_available
  migration: scan_local_volumes: adapt refs handling
  tests: add migration test for pending disk
  migration: fail when aliased volume is detected
  tests: add migration alias check

 PVE/QemuMigrate.pm                    | 109 ++++++++-----------
 PVE/QemuServer.pm                     |  13 ++-
 test/MigrationTest/QemuMigrateMock.pm |  10 ++
 test/run_qemu_migrate_tests.pl        | 150 +++++++++++++++++++++++++-
 4 files changed, 208 insertions(+), 74 deletions(-)

container: Aaron Lauterer (2):
  migration: only migrate volumes used by the guest
  migration: fail when aliased volume is detected

 src/PVE/LXC/Migrate.pm | 51 +++++++++++++++++-------------------------
 1 file changed, 21 insertions(+), 30 deletions(-)

docs: Aaron Lauterer (1):
  storage: add hint to avoid storage aliasing

 pvesm.adoc | 6 ++++++
 1 file changed, 6 insertions(+)


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