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When scanning all configured storages for disk images belonging to the
VM, the migration could easily fail if a storage is not available, but
enabled. That storage might not even be used by the VM at all.
By not scanning all storages and only looking at the disk images
referenced in the VM config, we can avoid unnecessary failures.
Some information that used to be provided by the storage scanning needs
to be fetched explicilty (size, format).
Behaviorally the biggest change is that unreferenced disk images will
not be migrated anymore. Only images referenced in the config will be
migrated.
The tests have been adapted accordingly.
Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>
at the end of a live migration, we need to remove old mac entries
on source host (vm is not yet stopped), before resume vm on target host
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
[T: resolve conflicts and rework on apply ]
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
besides the log calls these don't need any parts of the migration state,
so let's make them generic and re-use them for container migration and
replication in the future.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
avoids the possibility to die during phase3_cleanup and instead of needing to
duplicate the cleanup ourselves, benefit from phase2_cleanup doing so.
The duplicate cleanup was also very incomplete: it didn't stop the remote kvm
process (leading to 'VM already running' when trying to migrate again
afterwards), but it removed its disks, and it didn't unlock the config, didn't
close the tunnel and didn't cancel the block-dirty bitmaps.
Since migrate_cancel should do nothing after the (non-storage) migrate process
has completed, even that cleanup step is fine here.
Since phase3 is empty at the moment, the order of operations is still the same.
Also add a test, that would complain about finish_tunnel not being called before
this patch. That test also checks that local disks are not already removed
before finishing the block jobs.
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
and the associated parts for 'qm start'.
Each test will first populate the MigrationTest/run directory
with the relevant configuration files and files keeping track of the
state of everything necessary. Second, the mock-script for migration
is executed, which in turn will execute the 'qm start' mock-script
(if it's an online test that gets far enough). The scripts will simulate
a migration and update the relevant files in the MigrationTest/run directory.
Finally, the main test script will evaluate the state.
The main checks are the volume IDs on the source and target and the VM
configuration itself. Additional checks are the vm_status and expected_calls,
keeping track if certain calls have been made.
The rationale behind creating two mock-scripts is two-fold:
1. It removes the need to hard code responses for the tunnel
and to recycle logic for determining and allocating migration volumes.
Some of that logic already happens in the API part, so it was necessary
to mock the whole CLI-Handler.
2. It allows testing the code relevant for migration in 'qm start' as well,
and it should even be possible to test different versions of the
mock-scripts against each other. With a bit of extra work and things
like 'git worktree', it might even be possible to automate this.
The helper get_patched config is useful to change pre-defined configuration
files on the fly, avoiding the new to explicitly define whole configurations to
test for something in many cases.
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
