From: NeilBrown <neilb@suse.de>
Date: Mon, 14 Mar 2011 01:22:17 +0000 (+1100)
Subject: lafs: add write_checkpoint
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=e42e2b783c8bfd65fdcc5007b13cff54c8e8d273;p=lafs-utils.git

lafs: add write_checkpoint

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/tools/lafs.c b/tools/lafs.c
index 4cb06f2..efa6e88 100644
--- a/tools/lafs.c
+++ b/tools/lafs.c
@@ -1014,6 +1014,26 @@ static void c_write_state(struct state *st, void **args)
 		       (unsigned long long) st->lafs->seq);
 }
 
+/****** WRITE_CHECKPOINT ******/
+static char help_write_checkpoint[] = "Write a checkpoint with all committed blocks";
+static struct args args_write_checkpoint[] = {
+	TERMINAL_ARG
+};
+static void c_write_checkpoint(struct state *st, void **args)
+{
+	if (st->lafs->blocksize == 0)
+		printf("write checkpoint: filesystem is not initialised\n");
+	else if (st->lafs->devs == NULL)
+		printf("write checkpoint: No devices exist to write to\n");
+	else if (st->lafs->free_head == st->lafs->free_tail)
+		printf("write checkpoint: No free segments - try find_free\n");
+	else if (lafs_checkpoint(st->lafs))
+		printf("write state: Error writing checkpoint\n");
+	else if (st->verbose)
+		printf("Checkpoint written: seq now %llu\n",
+		       (unsigned long long) st->lafs->seq);
+}
+
 /****** STORE ******/
 static char help_store[] = "Create a file in the LaFS from an external file";
 static struct args args_store[] = {
@@ -1045,6 +1065,7 @@ static struct cmd lafs_cmds[] = {
 	CMD(quit),
 	CMD(reset),
 	CMD(store),
+	CMD(write_checkpoint),
 	CMD(write_dev),
 	CMD(write_state),
 	{ NULL, NULL, NULL, NULL}