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.rit...@irisa.fr>
---
This v2 fixes a line that was going beyond 80 characters.
block-migration.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/block-migration.c b/block-migration.c
index 1475325..60b9fc0 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)
--
1.7.3.5
