o test program for reading a vg

lib/Makefile.in

@@ -14,6 +14,7 @@ SOURCES=\
 	dev-mgr/dev-cache.c \
 	device/dev-cache.c \
 	device/dev-io.c \
+	format1/format1.c \
 	log/log.c \
 	mm/dbg_malloc.c \
 	mm/pool.c

lib/format1/disk-rep.h

@@ -101,6 +101,7 @@ struct lv_list {
 struct disk_list {
 	struct device *dev;
 	struct list_head list;
+
 	struct pv_disk pv;
 	struct vg_disk vg;
 	struct list_head uuids;

lib/format1/format1.c

@@ -2,7 +2,6 @@
  * Copyright (C) 2001 Sistina Software (UK) Limited.
  *
  * This file is released under the GPL.
- *
  */
 
 #include "disk-rep.h"

lib/format1/format1.h

@@ -2,7 +2,6 @@
  * Copyright (C) 2001 Sistina Software (UK) Limited.
  *
  * This file is released under the GPL.
- *
  */
 
 #ifndef LVM_FORMAT1_H

lib/metadata/metadata.h

@@ -117,18 +117,22 @@ struct pv_list {
 
 /* ownership of returned objects passes */
 struct io_space {
-	/* Returns list of names of all vgs - vg component only, not full path*/
+	/* Returns list of names of all vgs - vg
+           component only, not full path*/
 	struct name_list *(*get_vgs)(struct io_space *is);
 
-	/* Returns list of fully-populated pv structures */
+	/* Returns list of fully-populated pv
+           structures */
 	struct pv_list *(*get_pvs)(struct io_space *is);
 
-	/* Return PV with given name (may be full or relative path) */
+	/* Return PV with given name (may be full
+           or relative path) */
 	struct physical_volume *(*pv_read)(struct io_space *is,
-					const char *pv_name);
+					   const char *pv_name);
 
 	/* Write a PV structure to disk. */
-	/* Fails if the PV is in a VG ie pv->vg_name must be null */
+	/* Fails if the PV is in a VG ie
+           pv->vg_name must be null */
 	int (*pv_write)(struct io_space *is, struct physical_volume *pv);
 
 	/* if vg_name doesn't contain any slash, this function adds prefix */
@@ -136,9 +140,9 @@ struct io_space {
 					const char *vg_name);
 
 	/* Write out complete VG metadata. */
-	/* Ensure *internal* consistency before writing anything. 
+	/* Ensure *internal* consistency before writing anything.
-	 *   eg. PEs can't refer to PVs not part of the VG 
+	 *   eg. PEs can't refer to PVs not part of the VG
-	 * Order write sequence to aid recovery if process is aborted 
+	 * Order write sequence to aid recovery if process is aborted
 	 *   (eg flush entire set of changes to each disk in turn)
 	 * It is the responsibility of the caller to ensure external
  	 * consistency, eg by calling pv_write() if removing PVs from a VG

old-tests/format1/read_vg_t.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2001 Sistina Software (UK) Limited.
+ *
+ * This file is released under the GPL.
+ */
+
+#include "log.h"
+#include "format1.h"
+#include <stdio.h>
+
+int main(int argc, char **argv)
+{
+	struct io_space *ios;
+	struct volume_group *vg;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: read_vg_t <vg_name>\n");
+		exit(1);
+	}
+
+	init_log(stderr);
+	init_debug(_LOG_DEBUG);
+
+	if (!dev_cache_init()) {
+		fprintf(stderr, "init of dev-cache failed\n");
+		exit(1);
+	}
+
+	if (!dev_cache_add_dir("/dev")) {
+		fprintf(stderr, "couldn't add /dev to dir-cache\n");
+		exit(1);
+	}
+
+	ios = create_lvm_v1_format(NULL);
+	vg = ios->vg_read(ios, argv[1]);
+
+	if (!vg) {
+		fprintf(stderr, "couldn't read vg %s\n", argv[1]);
+		exit(1);
+	}
+
+	ios->destroy(ios);
+
+	dump_memory();
+	fin_log();
+	return 0;
+}