From: Pekka Enberg <penberg@kernel.org>
Date: Sun, 24 Jul 2011 20:19:10 +0000 (+0300)
Subject: kvm tools, qcow: Force read-only mode for QCOW images
X-Git-Tag: next-20110824~3^2~78
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f50152bf01581c7d8d11a9deabe7d33995a784a2;p=karo-tx-linux.git

kvm tools, qcow: Force read-only mode for QCOW images

The QCOW write support isn't stable enough for wide-spread use so force
read-only mode for QCOW images.

Signed-off-by: Pekka Enberg <penberg@kernel.org>
---

diff --git a/tools/kvm/disk/core.c b/tools/kvm/disk/core.c
index 46926fe1a807..20e19900c00d 100644
--- a/tools/kvm/disk/core.c
+++ b/tools/kvm/disk/core.c
@@ -46,9 +46,11 @@ struct disk_image *disk_image__open(const char *filename, bool readonly)
 		return NULL;
 
 	/* qcow image ?*/
-	disk		= qcow_probe(fd, readonly);
-	if (disk)
+	disk		= qcow_probe(fd, true);
+	if (disk) {
+		pr_warning("Forcing read-only support for QCOW");
 		return disk;
+	}
 
 	/* raw image ?*/
 	disk		= raw_image__probe(fd, &st, readonly);
@@ -217,4 +219,4 @@ ssize_t disk_image__get_serial(struct disk_image *disk, void *buffer, ssize_t *l
 
 	*len = snprintf(buffer, *len, "%llu%llu%llu", (u64)st.st_dev, (u64)st.st_rdev, (u64)st.st_ino);
 	return *len;
-}
\ No newline at end of file
+}