lvdisplay & lvreduce

1 files changed, 86 insertions, 0 deletions

diff --git a/tools/lvdisplay.c b/tools/lvdisplay.c
new file mode 100644
index 00000000..8130a33d
--- /dev/null
+++ b/tools/lvdisplay.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2001  Sistina Software
+ *
+ * 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.
+ *
+ */
+
+#include "tools.h"
+
+int lvdisplay_single(char *lv_name);
+int lvdisplay(int argc, char **argv)
+{
+	int ret = 0;
+	int ret_max = 0;
+	int opt = 0;
+
+	/* FIXME Allow VG / all arguments via a process_each? */
+	if (!argc) {
+		log_error("Please enter one or more logical volume paths");
+		return EINVALID_CMD_LINE;
+	}
+
+	if (arg_count(colon_ARG) && arg_count(verbose_ARG)) {
+		log_error("Options -v and -c are incompatible");
+		return EINVALID_CMD_LINE;
+	}
+
+	for (opt = 0; opt < argc; opt++) {
+		ret = lvdisplay_single(argv[opt]);
+		if (ret > ret_max)
+			ret_max = ret;
+	}
+
+	return ret_max;
+}
+
+int lvdisplay_single(char *lv_name)
+{
+	char *vg_name = NULL;
+
+	struct volume_group *vg;
+	struct list *lvh;
+	struct logical_volume *lv;
+
+	/* does VG exist? */
+	if (!(vg_name = extract_vgname(ios, lv_name))) {
+		return ECMD_FAILED;
+	}
+
+	log_verbose("Finding volume group %s", vg_name);
+	if (!(vg = ios->vg_read(ios, vg_name))) {
+		log_error("Volume group %s doesn't exist", vg_name);
+		return ECMD_FAILED;
+	}
+
+	if (!(lvh = find_lv_in_vg(vg, lv_name))) {
+		log_error("Can't find logical volume %s in volume group %s",
+			  lv_name, vg_name);
+		return ECMD_FAILED;
+	}
+
+	lv = &list_item(lvh, struct lv_list)->lv;
+
+	if (arg_count(colon_ARG))
+		lvdisplay_colons(lv);
+	else {
+		lvdisplay_full(lv);
+		if (arg_count(verbose_ARG))
+			lvdisplay_extents(lv);
+	}
+
+	return 0;
+}