o vgcfgrestore.

lib/format_text/format-text.c

@@ -68,8 +68,27 @@ static int _vg_setup(struct format_instance *fi, struct volume_group *vg)
 static struct volume_group *_vg_read(struct format_instance *fi,
 				     const char *vg_name)
 {
-	_not_written("_get_vgs");
+	char *file = (char *) fi->private;
+	struct volume_group *vg;
+
+	if (!(vg = text_vg_import(fi->cmd, file))) {
+		stack;
 		return NULL;
+	}
+
+	/*
+	 * Currently you can only have a single volume group per
+	 * text file (this restriction may remain).  We need to
+	 * check that it contains the correct volume group.
+	 */
+	if (strcmp(vg_name, vg->name)) {
+		pool_free(fi->cmd->mem, vg);
+		log_err("'%s' does not contain volume group '%s'.",
+			file, vg_name);
+		return NULL;
+	}
+
+	return vg;
 }
 
 static int _vg_write(struct format_instance *fi, struct volume_group *vg)
@@ -87,6 +106,7 @@ static int _vg_write(struct format_instance *fi, struct volume_group *vg)
 	else if (slash - file < PATH_MAX) {
 		strncpy(temp_dir, file, slash - file);
 		temp_dir[slash - file] = '\0';
+
 	} else {
 		log_error("Text format failed to determine directory.");
 		return 0;
@@ -125,7 +145,8 @@ static int _vg_write(struct format_instance *fi, struct volume_group *vg)
 
 static void _destroy(struct format_instance *fi)
 {
-	pool_free(fi->cmd->mem, fi);
+	dbg_free(fi->private);
+	dbg_free(fi);
 }
 
 static struct format_handler _text_handler = {
@@ -148,13 +169,13 @@ struct format_instance *text_format_create(struct cmd_context *cmd,
 	struct format_instance *fi;
 	char *path;
 
-	if (!(fi = pool_alloc(cmd->mem, sizeof(*fi)))) {
+	if (!(fi = dbg_malloc(sizeof(*fi)))) {
 		log_err(no_alloc);
 		return NULL;
 	}
 
-	if (!(path = pool_strdup(cmd->mem, file))) {
+	if (!(path = dbg_strdup(file))) {
-		pool_free(fi->cmd->mem, fi);
+		dbg_free(fi);
 		log_err(no_alloc);
 		return NULL;
 	}

tools/archive.c

@@ -198,3 +198,64 @@ int backup_remove(const char *vg_name)
 	return 1;
 }
 
+static int _read_vg(struct command_context *cmd,
+		    const char *vg_name, const char *file)
+{
+	int r;
+	struct format_instance *tf;
+
+	if (!(tf = text_format_create(cmd, file))) {
+		log_error("Couldn't create text format object.");
+		return 0;
+	}
+
+	if (!(r = tf->ops->vg_read(tf, vg_name)))
+		stack;
+
+	tf->ops->destroy(tf);
+	return r;
+}
+
+int backup_restore_from_file(const char *vg_name, const char *file)
+{
+	struct volume_group *vg;
+
+	/*
+	 * Read in the volume group.
+	 */
+	if (!(vg = _read_vg(vg_name, file))) {
+		stack;
+		return 0;
+	}
+
+	/*
+	 * Check that those pv's referenced in the backup are
+	 * currently orphans or members of the vg.s
+	 */
+	/*
+	 * FIXME: waiting for label code.
+	 */
+
+	/*
+	 * Write the vg.
+	 */
+	if (!fid->ops->vg_write(fid, vg)) {
+		stack;
+		return 0;
+	}
+
+	return 1;
+}
+
+int backup_restore(const char *vg_name)
+{
+	char path[PATH_MAX];
+
+	if (lvm_snprintf(path, sizeof(path), "%s/%s",
+			 _backup_params.dir, vg_name) < 0) {
+		log_err("Failed to generate backup filename (for restore).");
+		return 0;
+	}
+
+	return backup_restore_from_file(vg_name, path);
+}

tools/archive.h

@@ -39,4 +39,7 @@ void backup_enable(int flag);
 int backup(struct volume_group *vg);
 int backup_remove(const char *vg_name);
 
+int backup_restore_from_file(const char *vg_name, const char *file);
+int backup_restore(const char *vg_name);
+
 #endif

tools/stub.h

@@ -1,21 +1,7 @@
 /*
- * Copyright (C) 2001 Sistina Software
+ * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * LVM is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * LVM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with LVM; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
  *
+ * This file is released under the GPL.
  */
 
 int e2fsadm(int argc, char **argv) {return 1;}
@@ -23,7 +9,6 @@ int lvmdiskscan(int argc, char **argv) {return 1;}
 int lvmsadc(int argc, char **argv) {return 1;}
 int lvmsar(int argc, char **argv) {return 1;}
 int pvdata(int argc, char **argv) {return 1;}
-int vgcfgrestore(int argc, char **argv) {return 1;}
 int vgexport(int argc, char **argv) {return 1;}
 int vgimport(int argc, char **argv) {return 1;}
 int vgmknodes(int argc, char **argv) {return 1;}