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feat(computes): a compute names the address migrations reach it on

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Migration is client-driven: libvirt sends the VM's memory to the
destination's own host name unless a migration URI is given, and the
app never gave one. Where the hosts cannot resolve each other's names
(or the names point at a management network) every migration failed
with "Unable to resolve address '<host name>' service '49152'".

A compute now has an optional migration address (an IP address or a
host name, no scheme or port), editable in the compute form and the
API. A VM migrating to that compute is sent to tcp://<address>
(bracketed for IPv6). Empty, the default for existing computes, keeps
the previous behavior. The compute's host name is not reused, because
for SSH computes it can be an ssh_config alias.

The migration log entry names the address when one is set.
This commit is contained in:
catborise 2026-10-06 12:08:04 +03:00
parent 25b3671c33
commit 5a523befbd
10 changed files with 158 additions and 3 deletions
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5
vrtManager/instance.py
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@ -117,7 +117,10 @@ class wvmInstances(wvmConnect):
autoconverge=False,
compress=False,
postcopy=False,
uri=None,
):
"""uri: the native migration URI (tcp://address) on the destination;
None lets libvirt use the destination's own hostname."""
# The source definition always goes: one left behind points at the
# same (shared) disks as the migrated VM and could be started again.
flags = VIR_MIGRATE_PERSIST_DEST | VIR_MIGRATE_UNDEFINE_SOURCE
@ -144,7 +147,7 @@ class wvmInstances(wvmConnect):
"Destination host emulator is different. Cannot be migrated"
)
dom.migrate(self.wvm, flags, None, None, 0)
dom.migrate(self.wvm, flags, None, uri, 0)
def graphics_type(self, name):
inst = self.get_instance(name)