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-rw-r--r--src/shared/machine-image.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/shared/machine-image.c b/src/shared/machine-image.c
index 36b64e1fab..25689ca93c 100644
--- a/src/shared/machine-image.c
+++ b/src/shared/machine-image.c
@@ -20,6 +20,7 @@
***/
#include <sys/statfs.h>
+#include <linux/fs.h>
#include <fcntl.h>
#include "strv.h"
@@ -440,7 +441,7 @@ int image_clone(Image *i, const char *new_name, bool read_only) {
case IMAGE_GPT:
new_path = strappenda("/var/lib/container/", new_name, ".gpt");
- r = copy_file_atomic(i->path, new_path, read_only ? 0444 : 0644, false);
+ r = copy_file_atomic(i->path, new_path, read_only ? 0444 : 0644, false, FS_NOCOW_FL);
break;
default:
@@ -477,6 +478,12 @@ int image_read_only(Image *i, bool b) {
if (chmod(i->path, (st.st_mode & 0444) | (b ? 0000 : 0200)) < 0)
return -errno;
+
+ /* If the images is now read-only, it's a good time to
+ * defrag it, given that no write patterns will
+ * fragment it again. */
+ if (b)
+ (void) btrfs_defrag(i->path);
break;
}