1 /* libguestfs - the guestfsd daemon
2 * Copyright (C) 2009 Red Hat Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include "optgroups.h"
32 optgroup_lvm2_available (void)
34 int r = access ("/sbin/lvm", X_OK);
38 /* LVM actions. Keep an eye on liblvm, although at the time
39 * of writing it hasn't progressed very far.
43 convert_lvm_output (char *out, const char *prefix)
47 int size = 0, alloc = 0;
54 pend = strchr (p, '\n'); /* Get the next line of output. */
60 while (*p && c_isspace (*p)) /* Skip any leading whitespace. */
63 /* Sigh, skip trailing whitespace too. "pvs", I'm looking at you. */
65 while (*p && c_isspace (p[len]))
68 if (!*p) { /* Empty line? Skip it. */
75 snprintf (buf, sizeof buf, "%s%s", prefix, p);
80 if (add_string (&r, &size, &alloc, str) == -1) {
90 if (add_string (&r, &size, &alloc, NULL) == -1)
93 sort_strings (r, size-1);
103 r = command (&out, &err,
104 "/sbin/lvm", "pvs", "-o", "pv_name", "--noheadings", NULL);
106 reply_with_error ("%s", err);
114 return convert_lvm_output (out, NULL);
123 r = command (&out, &err,
124 "/sbin/lvm", "vgs", "-o", "vg_name", "--noheadings", NULL);
126 reply_with_error ("%s", err);
134 return convert_lvm_output (out, NULL);
143 r = command (&out, &err,
145 "-o", "vg_name,lv_name", "--noheadings",
146 "--separator", "/", NULL);
148 reply_with_error ("%s", err);
156 return convert_lvm_output (out, "/dev/");
159 /* These were so complex to implement that I ended up auto-generating
160 * the code. That code is in stubs.c, and it is generated as usual
163 guestfs_int_lvm_pv_list *
166 return parse_command_line_pvs ();
169 guestfs_int_lvm_vg_list *
172 return parse_command_line_vgs ();
175 guestfs_int_lvm_lv_list *
178 return parse_command_line_lvs ();
182 do_pvcreate (const char *device)
187 r = command (NULL, &err,
188 "/sbin/lvm", "pvcreate", device, NULL);
190 reply_with_error ("%s", err);
203 do_vgcreate (const char *volgroup, char *const *physvols)
209 argc = count_strings (physvols) + 3;
210 argv = malloc (sizeof (char *) * (argc + 1));
212 reply_with_perror ("malloc");
215 argv[0] = "/sbin/lvm";
216 argv[1] = "vgcreate";
218 for (i = 3; i <= argc; ++i)
219 argv[i] = physvols[i-3];
221 r = commandv (NULL, &err, (const char * const*) argv);
223 reply_with_error ("%s", err);
236 do_lvcreate (const char *logvol, const char *volgroup, int mbytes)
242 snprintf (size, sizeof size, "%d", mbytes);
244 r = command (NULL, &err,
245 "/sbin/lvm", "lvcreate",
246 "-L", size, "-n", logvol, volgroup, NULL);
248 reply_with_error ("%s", err);
261 do_lvresize (const char *logvol, int mbytes)
267 snprintf (size, sizeof size, "%d", mbytes);
269 r = command (NULL, &err,
270 "/sbin/lvm", "lvresize",
271 "-L", size, logvol, NULL);
273 reply_with_error ("%s", err);
282 /* Super-dangerous command used for testing. It removes all
283 * LVs, VGs and PVs permanently.
286 do_lvm_remove_all (void)
297 for (i = 0; xs[i] != NULL; ++i) {
298 r = command (NULL, &err, "/sbin/lvm", "lvremove", "-f", xs[i], NULL);
300 reply_with_error ("lvremove: %s: %s", xs[i], err);
314 for (i = 0; xs[i] != NULL; ++i) {
315 r = command (NULL, &err, "/sbin/lvm", "vgremove", "-f", xs[i], NULL);
317 reply_with_error ("vgremove: %s: %s", xs[i], err);
331 for (i = 0; xs[i] != NULL; ++i) {
332 r = command (NULL, &err, "/sbin/lvm", "pvremove", "-f", xs[i], NULL);
334 reply_with_error ("pvremove: %s: %s", xs[i], err);
345 /* There, that was easy, sorry about your data. */
350 do_lvremove (const char *device)
355 r = command (NULL, &err,
356 "/sbin/lvm", "lvremove", "-f", device, NULL);
358 reply_with_error ("%s", err);
371 do_vgremove (const char *device)
376 r = command (NULL, &err,
377 "/sbin/lvm", "vgremove", "-f", device, NULL);
379 reply_with_error ("%s", err);
392 do_pvremove (const char *device)
397 r = command (NULL, &err,
398 "/sbin/lvm", "pvremove", "-ff", device, NULL);
400 reply_with_error ("%s", err);
413 do_pvresize (const char *device)
418 r = command (NULL, &err,
419 "/sbin/lvm", "pvresize", device, NULL);
421 reply_with_error ("%s: %s", device, err);
431 do_vg_activate (int activate, char *const *volgroups)
437 argc = count_strings (volgroups) + 4;
438 argv = malloc (sizeof (char *) * (argc+1));
440 reply_with_perror ("malloc");
444 argv[0] = "/sbin/lvm";
445 argv[1] = "vgchange";
447 argv[3] = activate ? "y" : "n";
448 for (i = 4; i <= argc; ++i)
449 argv[i] = volgroups[i-4];
451 r = commandv (NULL, &err, (const char * const*) argv);
453 reply_with_error ("vgchange: %s", err);
466 do_vg_activate_all (int activate)
468 char *empty[] = { NULL };
469 return do_vg_activate (activate, empty);
473 do_lvrename (const char *logvol, const char *newlogvol)
478 r = command (NULL, &err,
479 "/sbin/lvm", "lvrename",
480 logvol, newlogvol, NULL);
482 reply_with_error ("%s -> %s: %s", logvol, newlogvol, err);
495 do_vgrename (const char *volgroup, const char *newvolgroup)
500 r = command (NULL, &err,
501 "/sbin/lvm", "vgrename",
502 volgroup, newvolgroup, NULL);
504 reply_with_error ("%s -> %s: %s", volgroup, newvolgroup, err);