diff options
author | Peter Xu <peterx@redhat.com> | 2018-05-02 18:47:31 +0800 |
---|---|---|
committer | Juan Quintela <quintela@redhat.com> | 2018-05-15 20:56:55 +0200 |
commit | d1b8eadbc43739992eed75912f6a065b9f299221 (patch) | |
tree | cfb3fd6f4622ead92670628c88dd535b328b0bf1 /migration/migration.c | |
parent | 13955b89ce54a85a9e88c64a196db61aa8bf0f34 (diff) |
migration: introduce SaveVMHandlers.resume_prepare
This is hook function to be called when a postcopy migration wants to
resume from a failure. For each module, it should provide its own
recovery logic before we switch to the postcopy-active state.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-16-peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/migration.c')
-rw-r--r-- | migration/migration.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/migration/migration.c b/migration/migration.c index 4f2c6d22d1..b0217c4823 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2454,7 +2454,25 @@ typedef enum MigThrError { /* Return zero if success, or <0 for error */ static int postcopy_do_resume(MigrationState *s) { - /* TODO: do the resume logic */ + int ret; + + /* + * Call all the resume_prepare() hooks, so that modules can be + * ready for the migration resume. + */ + ret = qemu_savevm_state_resume_prepare(s); + if (ret) { + error_report("%s: resume_prepare() failure detected: %d", + __func__, ret); + return ret; + } + + /* + * TODO: handshake with dest using MIG_CMD_RESUME, + * MIG_RP_MSG_RESUME_ACK, then switch source state to + * "postcopy-active" + */ + return 0; } |