X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=dss.c;h=a3bda5330510e5290ef234d0a8e67b29a726461d;hb=f1aa445d6e57465d08b8a1ee6b9c87c9bb1d25f6;hp=07a60425170ddab063ee6071d4901993a9db8c62;hpb=90e4077abd237cfd03def4ea023a70ccd9167bcf;p=dss.git

diff --git a/dss.c b/dss.c
index 07a6042..a3bda53 100644
--- a/dss.c
+++ b/dss.c
@@ -606,9 +606,18 @@ static int try_to_free_disk_space(void)
 		if (next_snapshot_is_due())
 			return 0;
 	}
+	/*
+	 * Idle and --keep_redundant not given, or low disk space. Look at
+	 * existing snapshots.
+	 */
 	dss_get_snapshot_list(&sl);
 	ret = 0;
-	if (!low_disk_space && sl.num_snapshots <= 1)
+	/*
+	 * Don't remove anything if there is free space and we have fewer
+	 * snapshots than configured, plus one. This way there is always one
+	 * snapshot that can be recycled.
+	 */
+	if (!low_disk_space && sl.num_snapshots <= 1 << conf.num_intervals_arg)
 		goto out;
 	why = "outdated";
 	victim = find_outdated_snapshot(&sl);