From 39448cf3e5922d1a081401969c3e22b22eb98b8b Mon Sep 17 00:00:00 2001 From: "m.lorini" <marco.lorini@garr.it> Date: Wed, 11 Dec 2019 11:42:27 +0100 Subject: [PATCH] Add documentation about migration with instances reboot for ephemeral and volume instances --- .../kb/openstack/manual_VM_host_migration.rst | 33 +++++++++++++++++-- 1 file changed, 30 insertions(+), 3 deletions(-) diff --git a/web/support/kb/openstack/manual_VM_host_migration.rst b/web/support/kb/openstack/manual_VM_host_migration.rst index 3fef743b..42be3813 100644 --- a/web/support/kb/openstack/manual_VM_host_migration.rst +++ b/web/support/kb/openstack/manual_VM_host_migration.rst @@ -13,6 +13,22 @@ Migration for ephemeral instances with status *stopped/suspended/paused*:: $ nova migrate --poll 679511f2-4df1-44cc-883d-b3a37402e976 +**ACTIVE instances: migration with instances reboot** + +If the instance is in Active status and it is build on Ephemeral storage, the follows commands allows the migration with instances reboot:: + + $ nova migrate 27924a4a-b48e-4e3a-9786-955284d21e88 + +If you want it is possible add the *poll* option to report the server migration progress until it completes. + +Alternatively you can use the Openstack command for the migration:: + + $ openstack migrate 27924a4a-b48e-4e3a-9786-955284d21e88 + +After the migration command it will be necessary confirm the resize:: + + $ nova resize-confirm 27924a4a-b48e-4e3a-9786-955284d21e88 + **ACTIVE instances: live migration** If the instance is built on Ephemeral storage, live migration is possible with the following command:: @@ -28,11 +44,20 @@ Case B: boot volume on non-ephemeral (Ceph) disk **STOPPED/SHUTDOWN/PAUSED instances: migration** - -Migration for ephemeral instances with status *stopped/suspended/paused*:: +Migration for non-ephemeral instances with status *stopped/suspended/paused*:: $ openstack server migrate --wait 679511f2-4df1-44cc-883d-b3a37402e976 +**ACTIVE instances: migration with instances reboot** + +If the instance is in Active status and it is built on Ceph volume, the follows commands allows the migration with instances reboot:: + + $ openstack server migrate fcc624c7-24b7-4c11-b6cf-13cdae84d640 + +Also in this case, after the migration command it will be necessary confirm the resize:: + + $ nova resize-confirm fcc624c7-24b7-4c11-b6cf-13cdae84d640 + **ACTIVE instances: live migration** If the instance is built on Ceph volume, execute:: @@ -43,7 +68,9 @@ If you want to have control over the destination host to move the VM to, append $ openstack server migrate --live ct1-r3-s15 --block-migration fcc624c7-24b7-4c11-b6cf-13cdae84d640 -(note the *--block-migration* is needed here) +If the preview command return an error, you can try without *--block-migration* option:: + + $ openstack server migrate --live ct1-r3-s15 fcc624c7-24b7-4c11-b6cf-13cdae84d640 Method 2: manual procedure -- GitLab