commit 8591675f44929a9e4b5d3a5fd702a4b6d41c7903
author Marcelo Tosatti <mtosatti@redhat.com> Wed Jan 26 12:12:35 2011 -0200
committer Kevin Wolf <kwolf@redhat.com> Mon Feb 07 12:51:19 2011 +0100
tree 1ad3ac6b6d162ea31f952922e1e4f4b7dce74725
parent db593f2565dc12442d6bac9e8eaefa027dfcada9

block: enable in_use flag

Set block device in use during block migration, disallow drive_del and
bdrv_truncate for in use devices.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block.c

diff --git a/block.c b/block.c
index ee9edfc..b476479 100644
--- a/block.c
+++ b/block.c
@@ -1132,6 +1132,8 @@
         return -ENOTSUP;
     if (bs->read_only)
         return -EACCES;
+    if (bdrv_in_use(bs))
+        return -EBUSY;
     ret = drv->bdrv_truncate(bs, offset);
     if (ret == 0) {
         ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);