From: "Denis V. Lunev" <d...@openvz.org> As long as BDRV_O_INACTIVE is set, the image file is only opened so we have a file descriptor for it. We're definitely not supposed to modify the image, it's still owned by the migration source.
This commit is an addition to 09e0c771 but the assert() is added to bdrv_truncate(). Signed-off-by: Denis V. Lunev <d...@openvz.org> CC: Kevin Wolf <kw...@redhat.com> CC: Max Reitz <mre...@redhat.com> Message-id: 1491405505-31620-3-git-send-email-...@openvz.org Reviewed-by: Eric Blake <ebl...@redhat.com> Signed-off-by: Max Reitz <mre...@redhat.com> --- block.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block.c b/block.c index 76bf00f..6c6bb3e 100644 --- a/block.c +++ b/block.c @@ -3328,6 +3328,8 @@ int bdrv_truncate(BdrvChild *child, int64_t offset, Error **errp) return -EACCES; } + assert(!(bs->open_flags & BDRV_O_INACTIVE)); + ret = drv->bdrv_truncate(bs, offset, errp); if (ret == 0) { ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS); -- 1.8.3.1