kvm tools: Print debug info for qcow1_nowrite_sector

Print debug info when we are in qcow1_nowrite_sector

Signed-off-by: Asias He <asias.hejun@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/tools/kvm/disk/qcow.c b/tools/kvm/disk/qcow.c
index dd11ed97918326572523fe1394d42851bf6b7e3b..29964b9488a9addac6fe53f503a4b28140310b82 100644 (file)
--- a/tools/kvm/disk/qcow.c
+++ b/tools/kvm/disk/qcow.c
@@ -323,6 +323,7 @@ static ssize_t qcow1_write_sector(struct disk_image *disk, u64 sector, void *src
 static ssize_t qcow1_nowrite_sector(struct disk_image *disk, u64 sector, void *src, u32 src_len)
 {
        /* I/O error */
+       info("qcow1_nowrite_sector: no write support\n");
        return -1;
 }