From patchwork Tue Mar  1 09:49:42 2011
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Subject: Add error message for loading snapshot without VM state
From: Kevin Wolf <kwolf@redhat.com>
X-Patchwork-Id: 84921
Message-Id: <1298972982-7609-1-git-send-email-kwolf@redhat.com>
To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com
Date: Tue,  1 Mar 2011 10:49:42 +0100

It already fails, but it didn't tell the user why.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>

---
savevm.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/savevm.c b/savevm.c
index a50fd31..6e026a8 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1996,6 +1996,8 @@ int load_vmstate(const char *name)
     if (ret < 0) {
         return ret;
     } else if (sn.vm_state_size == 0) {
+        error_report("This is a disk-only snapshot. Revert to it offline "
+            "using qemu-img.");
         return -EINVAL;
     }