diff options
| author | Peter Lieven <pl@kamp.de> | 2018-03-08 12:18:24 +0100 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2018-03-09 17:39:25 +0000 |
| commit | b255734531ea2853d1a22b3e64c49084bb304e60 (patch) | |
| tree | c15c08ada3bc2b484b37552168b7aa76a43c6ffa | |
| parent | ab105cc138159b1f829025bbb45b63ad24bc0aaa (diff) | |
| download | qemu-b255734531ea2853d1a22b3e64c49084bb304e60.zip | |
migration: do not transfer ram during bulk storage migration
this patch makes the bulk phase of a block migration to take
place before we start transferring ram. As the bulk block migration
can take a long time its pointless to transfer ram during that phase.
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <1520507908-16743-2-git-send-email-pl@kamp.de>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
| -rw-r--r-- | migration/ram.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/migration/ram.c b/migration/ram.c index 3b6c077964..7266351fd0 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -2258,6 +2258,13 @@ static int ram_save_iterate(QEMUFile *f, void *opaque) int64_t t0; int done = 0; + if (blk_mig_bulk_active()) { + /* Avoid transferring ram during bulk phase of block migration as + * the bulk phase will usually take a long time and transferring + * ram updates during that time is pointless. */ + goto out; + } + rcu_read_lock(); if (ram_list.version != rs->last_version) { ram_state_reset(rs); @@ -2304,6 +2311,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque) */ ram_control_after_iterate(f, RAM_CONTROL_ROUND); +out: qemu_put_be64(f, RAM_SAVE_FLAG_EOS); ram_counters.transferred += 8; |