diff options
author | Jasper Ras <jras@hostnet.nl> | 2025-01-19 21:14:51 +0100 |
---|---|---|
committer | Jasper Ras <jras@hostnet.nl> | 2025-01-19 21:14:51 +0100 |
commit | 9642cd7ae24f0ba79ce5647c709b35ae8f06a285 (patch) | |
tree | ae25c3b0db7ae4c23186b294c6d000073f085c2d /3 resources/openstack/Nova live migration volume.md | |
parent | 969b96c2531fb986f6c7f21fd544391b439defd7 (diff) |
vault backup: 2025-01-19 21:14:51
Diffstat (limited to '3 resources/openstack/Nova live migration volume.md')
-rw-r--r-- | 3 resources/openstack/Nova live migration volume.md | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/3 resources/openstack/Nova live migration volume.md b/3 resources/openstack/Nova live migration volume.md deleted file mode 100644 index 8b37f67..0000000 --- a/3 resources/openstack/Nova live migration volume.md +++ /dev/null @@ -1,18 +0,0 @@ -#openstack #nova #live-migration #volume - - ---- -Table cinder.volume_attachment, contains which volume_driver. target_lun `(<n>)` here maps to `dm-<n>`. -Luns are not unique across pod, each node has a target_lun 2 and thus dm-2 connected. - -os-brick is responsible for connecting volumes; -if connection_info it receives contains target_iqns, target_luns etc it will not do a scan and just returns those. -`@see os_brick/initiator/connectors/iscsi.py` - -`nova/virt/libvirt/driver.py -> def _connect_volume` does attaching of volumes using os-brick. Driver exposes some methods that do this and are called elsewhere: `swap_volume`, `attach_volume`, `pre_live_migration`. - -`pre_live_migration` is called by `nova/compute/manager.py` - -So in `nova/compute/manager.py` there is a function that does the rollback, and it rollbacks bdm's and deletes volume attachments before it calls `rollback_live_migration_at_destination` which in turn makes an attempt at deleting the actual volume attachment to the node. But at that point all objects have been rollbacked already so it has invalid information. - -If the code in new versions of openstack isn't any different i'll just make a bug report and see what they come up with. |