[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 1/1] block: fix libvirt snapshot with existing bitma
From: |
Denis V. Lunev |
Subject: |
[Qemu-devel] [PATCH 1/1] block: fix libvirt snapshot with existing bitmaps |
Date: |
Mon, 13 Jun 2016 15:38:55 +0300 |
From: Vladimir Sementsov-Ogievskiy <address@hidden>
Fix the following bug:
# virsh start test
Domain test started
# virsh qemu-monitor-command test \
'{"execute":"block-dirty-bitmap-add",\
"arguments":{"node":"drive0","name":"ab"}}'
{"return":{},"id":"libvirt-36"}'}'
# virsh snapshot-create test
error: Unable to read from monitor: Connection reset by peer
Actually, assert "assert(pos < hb->size)" in hbitmap_iter_init fires,
because qcow2_save_vmstate just writes to bs (not to bs->file->bs) after
the end of the drive.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Signed-off-by: Denis V. Lunev <address@hidden>
CC: Kevin Wolf <address@hidden>
CC: Max Reitz <address@hidden>
---
block/dirty-bitmap.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 4902ca5..7b636ee 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -364,6 +364,11 @@ void bdrv_set_dirty(BlockDriverState *bs, int64_t
cur_sector,
int nr_sectors)
{
BdrvDirtyBitmap *bitmap;
+
+ if (cur_sector >= bdrv_nb_sectors(bs)) {
+ return;
+ }
+
QLIST_FOREACH(bitmap, &bs->dirty_bitmaps, list) {
if (!bdrv_dirty_bitmap_enabled(bitmap)) {
continue;
--
2.1.4
- [Qemu-devel] [PATCH 1/1] block: fix libvirt snapshot with existing bitmaps,
Denis V. Lunev <=