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 <[email protected]> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
