[PATCH 23/24] mdrestore: Add support for passing log device as an argument

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metadump v2 format allows dumping metadata from external log devices. This
commit allows passing the device file to which log data must be restored from
the corresponding metadump file.

Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
---
 mdrestore/xfs_mdrestore.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/mdrestore/xfs_mdrestore.c b/mdrestore/xfs_mdrestore.c
index 9e06d37dc..f5eff62ef 100644
--- a/mdrestore/xfs_mdrestore.c
+++ b/mdrestore/xfs_mdrestore.c
@@ -427,7 +427,8 @@ static struct mdrestore_ops mdrestore_ops_v2 = {
 static void
 usage(void)
 {
-	fprintf(stderr, "Usage: %s [-V] [-g] [-i] source target\n", progname);
+	fprintf(stderr, "Usage: %s [-V] [-g] [-i] [-l logdev] source target\n",
+		progname);
 	exit(1);
 }
 
@@ -453,7 +454,7 @@ main(
 
 	progname = basename(argv[0]);
 
-	while ((c = getopt(argc, argv, "giV")) != EOF) {
+	while ((c = getopt(argc, argv, "gil:V")) != EOF) {
 		switch (c) {
 			case 'g':
 				mdrestore.show_progress = 1;
@@ -461,6 +462,9 @@ main(
 			case 'i':
 				mdrestore.show_info = 1;
 				break;
+			case 'l':
+				logdev = optarg;
+				break;
 			case 'V':
 				printf("%s version %s\n", progname, VERSION);
 				exit(0);
@@ -493,6 +497,8 @@ main(
 	}
 
 	if (mdrestore_ops_v1.read_header(&mb, src_f) == 0) {
+		if (logdev != NULL)
+			usage();
 		mdrestore.mdrops = &mdrestore_ops_v1;
 		header = &mb;
 	} else if (mdrestore_ops_v2.read_header(&xmh, src_f) == 0) {
-- 
2.39.1




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