The btrfs-image tool should not be run on a mounted filesystem.
The undergoing fs operations may change what you have imaged a while ago,
this makes the image meanmingless.
Signed-off-by: Gui Hecheng <guihc.fnst@xxxxxxxxxxxxxx>
---
btrfs-image.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/btrfs-image.c b/btrfs-image.c
index 985aa26..9719d1c 100644
--- a/btrfs-image.c
+++ b/btrfs-image.c
@@ -2570,10 +2570,20 @@ int main(int argc, char *argv[])
num_threads = 1;
}
- if (create)
+ if (create) {
+ ret = check_mounted(source);
+ if (ret < 0) {
+ fprintf(stderr, "Could not check mount status: %s\n",
+ strerror(-ret));
+ exit(1);
+ } else if (ret) {
+ fprintf(stderr, "The device is busy\n");
+ exit(1);
+ }
+
ret = create_metadump(source, out, num_threads,
compress_level, sanitize, walk_trees);
- else
+ } else
ret = restore_metadump(source, out, old_restore, 1,
multi_devices);
if (ret) {
--
1.8.1.4
--
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