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| author | Peter Xu <peterx@redhat.com> | 2018-05-02 18:47:22 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2018-05-15 20:24:27 +0200 |
| commit | 3a7804c3065ac79ff6e609e75ff2765d79f64f85 (patch) | |
| tree | f6e71bb7685a6462714221fe0908132c842122d0 /migration/savevm.c | |
| parent | 14b1742eaaad1148c5b421eea0ae7e74d823e630 (diff) | |
| download | qemu-3a7804c3065ac79ff6e609e75ff2765d79f64f85.zip | |
migration: allow fault thread to pause
Allows the fault thread to stop handling page faults temporarily. When
network failure happened (and if we expect a recovery afterwards), we
should not allow the fault thread to continue sending things to source,
instead, it should halt for a while until the connection is rebuilt.
When the dest main thread noticed the failure, it kicks the fault thread
to switch to pause state.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180502104740.12123-7-peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/savevm.c')
| -rw-r--r-- | migration/savevm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/migration/savevm.c b/migration/savevm.c index 8ad99b1eaa..6ee69d8283 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -2083,6 +2083,9 @@ static bool postcopy_pause_incoming(MigrationIncomingState *mis) mis->to_src_file = NULL; qemu_mutex_unlock(&mis->rp_mutex); + /* Notify the fault thread for the invalidated file handle */ + postcopy_fault_thread_notify(mis); + error_report("Detected IO failure for postcopy. " "Migration paused."); |