avoid overwriting the rbd header when doing qemu-img create
to resize a rbd image use rbdtool --resize instead
---
block/rbd.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/block/rbd.c b/block/rbd.c
index a182d5e..11b7c10 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -163,6 +163,8 @@ static int rbd_create(const char *filename, QEMUOptionParameter * options)
{
int64_t bytes = 0;
int64_t objsize;
+ uint64_t size;
+ time_t mtime;
uint8_t obj_order = RBD_DEFAULT_OBJ_ORDER;
char pool[RBD_MAX_SEG_NAME_SIZE];
char n[RBD_MAX_SEG_NAME_SIZE];
@@ -227,6 +229,12 @@ static int rbd_create(const char *filename, QEMUOptionParameter * options)
return -EIO;
}
+ ret = rados_stat(p, n, &size, &mtime);
+ if (ret == 0) {
+ ret=-EEXIST;
+ goto done;
+ }
+
ret = rados_write(p, n, 0, (const char *)&header, sizeof(header));
if (ret < 0) {
goto done;
--
1.7.0.4
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