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[v4,07/28] migration: force QEMUFile to blocking mode for outgoing migration

Message ID 1457714282-6981-8-git-send-email-berrange@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Daniel P. Berrangé March 11, 2016, 4:37 p.m. UTC 
Instead of relying on the default QEMUFile I/O blocking flag
state, explicitly turn on blocking I/O for outgoing migration
since it takes place in a background thread.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 migration/migration.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/migration/migration.c b/migration/migration.c
index 942c22d..8fdd630 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1770,6 +1770,7 @@  void migrate_fd_connect(MigrationState *s)
     s->expected_downtime = max_downtime/1000000;
     s->cleanup_bh = qemu_bh_new(migrate_fd_cleanup, s);
 
+    qemu_file_set_blocking(s->to_dst_file, true);
     qemu_file_set_rate_limit(s->to_dst_file,
                              s->bandwidth_limit / XFER_LIMIT_RATIO);