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| author | Anthony PERARD <anthony.perard@citrix.com> | 2017-11-16 15:14:19 +0000 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2017-11-21 19:42:26 +0100 |
| commit | 5d6c599fe1d69a1bf8c5c4d3c58be2b31cd625ad (patch) | |
| tree | e23fa6670aed9cfb31ee9b48d48aec4aff46a7c9 /qapi | |
| parent | a15d835f00dce270fd3194e83d9910f4b5b44ac0 (diff) | |
| download | qemu-5d6c599fe1d69a1bf8c5c4d3c58be2b31cd625ad.tar.gz | |
migration, xen: Fix block image lock issue on live migration
When doing a live migration of a Xen guest with libxl, the images for
block devices are locked by the original QEMU process, and this prevent
the QEMU at the destination to take the lock and the migration fail.
>From QEMU point of view, once the RAM of a domain is migrated, there is
two QMP commands, "stop" then "xen-save-devices-state", at which point a
new QEMU is spawned at the destination.
Release locks in "xen-save-devices-state" so the destination can takes
them, if it's a live migration.
This patch add the "live" parameter to "xen-save-devices-state" which
default to true so older version of libxenlight can work with newer
version of QEMU.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/migration.json | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/qapi/migration.json b/qapi/migration.json index bbc4671ded..03f57c9616 100644 --- a/qapi/migration.json +++ b/qapi/migration.json @@ -1075,6 +1075,9 @@ # data. See xen-save-devices-state.txt for a description of the binary # format. # +# @live: Optional argument to ask QEMU to treat this command as part of a live +# migration. Default to true. (since 2.11) +# # Returns: Nothing on success # # Since: 1.1 @@ -1086,7 +1089,8 @@ # <- { "return": {} } # ## -{ 'command': 'xen-save-devices-state', 'data': {'filename': 'str'} } +{ 'command': 'xen-save-devices-state', + 'data': {'filename': 'str', '*live':'bool' } } ## # @xen-set-replication: |