diff options
| author | Pierre Riteau <Pierre.Riteau@irisa.fr> | 2011-01-12 14:41:00 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-01-24 11:08:50 +0100 |
| commit | 8b6b2afcf85dd5ff33075e93a2e30fbea34c5a55 (patch) | |
| tree | 51d1158c52a86d5fc4651f2f04164a9f55570e6c | |
| parent | 70b4f4bb05ff5e6812c6593eeefbd19bd61b517d (diff) | |
Avoid divide by zero when there is no block device to migrate
When block migration is requested and no read-write block device is
present, a divide by zero exception is triggered because
total_sector_sum equals zero.
Signed-off-by: Pierre Riteau <Pierre.Riteau@irisa.fr>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block-migration.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/block-migration.c b/block-migration.c index 14753254d6..60b9fc0ef0 100644 --- a/block-migration.c +++ b/block-migration.c @@ -350,7 +350,12 @@ static int blk_mig_save_bulked_block(Monitor *mon, QEMUFile *f) } } - progress = completed_sector_sum * 100 / block_mig_state.total_sector_sum; + if (block_mig_state.total_sector_sum != 0) { + progress = completed_sector_sum * 100 / + block_mig_state.total_sector_sum; + } else { + progress = 100; + } if (progress != block_mig_state.prev_progress) { block_mig_state.prev_progress = progress; qemu_put_be64(f, (progress << BDRV_SECTOR_BITS) |