sheepdog: fix savevm and loadvm

This patch sets data to be sent to Sheepdog correctly and fixes savevm
and loadvm operations on a Sheepdog image.

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 1f7a48de4467f31afc51169122453318efdb0f33)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

diff --git a/block/sheepdog.c b/block/sheepdog.c
index df4f44107b32f540d26ae3e4763ee440841ef7cf..e0753ee9e53906081db566903ebbbaeb8771837f 100644 (file)
--- a/block/sheepdog.c
+++ b/block/sheepdog.c
@@ -1986,7 +1986,7 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data,
         vdi_index = pos / SD_DATA_OBJ_SIZE;
         offset = pos % SD_DATA_OBJ_SIZE;
 
-        data_len = MIN(remaining, SD_DATA_OBJ_SIZE);
+        data_len = MIN(remaining, SD_DATA_OBJ_SIZE - offset);
 
         vmstate_oid = vid_to_vmstate_oid(s->inode.vdi_id, vdi_index);
 
@@ -2007,6 +2007,7 @@ static int do_load_save_vmstate(BDRVSheepdogState *s, uint8_t *data,
         }
 
         pos += data_len;
+        data += data_len;
         remaining -= data_len;
     }
     ret = size;