#include <stdio.h>
#include <stdlib.h>
+#include <inttypes.h>
#include <string.h>
#include <unistd.h>
+#include <sys/stat.h>
#include "daemon.h"
#include "c-ctype.h"
int
optgroup_lvm2_available (void)
{
- int r = access ("/sbin/lvm", X_OK);
- return r == 0;
+ return prog_exists ("lvm");
}
/* LVM actions. Keep an eye on liblvm, although at the time
int r;
r = command (&out, &err,
- "/sbin/lvm", "pvs", "-o", "pv_name", "--noheadings", NULL);
+ "lvm", "pvs", "-o", "pv_name", "--noheadings", NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
int r;
r = command (&out, &err,
- "/sbin/lvm", "vgs", "-o", "vg_name", "--noheadings", NULL);
+ "lvm", "vgs", "-o", "vg_name", "--noheadings", NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
int r;
r = command (&out, &err,
- "/sbin/lvm", "lvs",
+ "lvm", "lvs",
"-o", "vg_name,lv_name", "--noheadings",
"--separator", "/", NULL);
if (r == -1) {
int r;
r = command (NULL, &err,
- "/sbin/lvm", "pvcreate", device, NULL);
+ "lvm", "pvcreate", device, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (err);
reply_with_perror ("malloc");
return -1;
}
- argv[0] = "/sbin/lvm";
+ argv[0] = "lvm";
argv[1] = "vgcreate";
argv[2] = volgroup;
for (i = 3; i <= argc; ++i)
snprintf (size, sizeof size, "%d", mbytes);
r = command (NULL, &err,
- "/sbin/lvm", "lvcreate",
+ "lvm", "lvcreate",
"-L", size, "-n", logvol, volgroup, NULL);
if (r == -1) {
reply_with_error ("%s", err);
snprintf (size, sizeof size, "%d", mbytes);
r = command (NULL, &err,
- "/sbin/lvm", "lvresize",
- "-L", size, logvol, NULL);
+ "lvm", "lvresize",
+ "--force", "-L", size, logvol, NULL);
if (r == -1) {
- reply_with_error ("lvresize: %s", err);
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+ return 0;
+}
+
+int
+do_lvresize_free (const char *logvol, int percent)
+{
+ char *err;
+ int r;
+
+ if (percent < 0 || percent > 100) {
+ reply_with_error ("percentage must be [0..100] (was %d)", percent);
+ return -1;
+ }
+
+ char size[64];
+ snprintf (size, sizeof size, "+%d%%FREE", percent);
+
+ r = command (NULL, &err,
+ "lvm", "lvresize", "-l", size, logvol, NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
free (err);
return -1;
}
return -1;
for (i = 0; xs[i] != NULL; ++i) {
- r = command (NULL, &err, "/sbin/lvm", "lvremove", "-f", xs[i], NULL);
+ r = command (NULL, &err, "lvm", "lvremove", "-f", xs[i], NULL);
if (r == -1) {
reply_with_error ("lvremove: %s: %s", xs[i], err);
free (err);
return -1;
for (i = 0; xs[i] != NULL; ++i) {
- r = command (NULL, &err, "/sbin/lvm", "vgremove", "-f", xs[i], NULL);
+ r = command (NULL, &err, "lvm", "vgremove", "-f", xs[i], NULL);
if (r == -1) {
reply_with_error ("vgremove: %s: %s", xs[i], err);
free (err);
return -1;
for (i = 0; xs[i] != NULL; ++i) {
- r = command (NULL, &err, "/sbin/lvm", "pvremove", "-f", xs[i], NULL);
+ r = command (NULL, &err, "lvm", "pvremove", "-f", xs[i], NULL);
if (r == -1) {
reply_with_error ("pvremove: %s: %s", xs[i], err);
free (err);
int r;
r = command (NULL, &err,
- "/sbin/lvm", "lvremove", "-f", device, NULL);
+ "lvm", "lvremove", "-f", device, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (err);
int r;
r = command (NULL, &err,
- "/sbin/lvm", "vgremove", "-f", device, NULL);
+ "lvm", "vgremove", "-f", device, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (err);
int r;
r = command (NULL, &err,
- "/sbin/lvm", "pvremove", "-ff", device, NULL);
+ "lvm", "pvremove", "-ff", device, NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (err);
int r;
r = command (NULL, &err,
- "/sbin/lvm", "pvresize", device, NULL);
+ "lvm", "pvresize", device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s: %s", device, err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+ return 0;
+}
+
+int
+do_pvresize_size (const char *device, int64_t size)
+{
+ char *err;
+ int r;
+
+ char buf[32];
+ snprintf (buf, sizeof buf, "%" PRIi64 "b", size);
+
+ r = command (NULL, &err,
+ "lvm", "pvresize",
+ "--setphysicalvolumesize", buf,
+ device, NULL);
if (r == -1) {
- reply_with_error ("pvresize: %s: %s", device, err);
+ reply_with_error ("%s: %s", device, err);
free (err);
return -1;
}
return -1;
}
- argv[0] = "/sbin/lvm";
+ argv[0] = "lvm";
argv[1] = "vgchange";
argv[2] = "-a";
argv[3] = activate ? "y" : "n";
int r;
r = command (NULL, &err,
- "/sbin/lvm", "lvrename",
+ "lvm", "lvrename",
logvol, newlogvol, NULL);
if (r == -1) {
- reply_with_error ("lvrename: %s -> %s: %s", logvol, newlogvol, err);
+ reply_with_error ("%s -> %s: %s", logvol, newlogvol, err);
free (err);
return -1;
}
int r;
r = command (NULL, &err,
- "/sbin/lvm", "vgrename",
+ "lvm", "vgrename",
volgroup, newvolgroup, NULL);
if (r == -1) {
- reply_with_error ("vgrename: %s -> %s: %s", volgroup, newvolgroup, err);
+ reply_with_error ("%s -> %s: %s", volgroup, newvolgroup, err);
free (err);
return -1;
}
return 0;
}
+
+static char *
+get_lvm_field (const char *cmd, const char *field, const char *device)
+{
+ char *out;
+ char *err;
+ int r = command (&out, &err,
+ "lvm", cmd,
+ "--unbuffered", "--noheadings", "-o", field,
+ device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s: %s", device, err);
+ free (out);
+ free (err);
+ return NULL;
+ }
+
+ free (err);
+
+ trim (out);
+ return out; /* Caller frees. */
+}
+
+char *
+do_pvuuid (const char *device)
+{
+ return get_lvm_field ("pvs", "pv_uuid", device);
+}
+
+char *
+do_vguuid (const char *vgname)
+{
+ return get_lvm_field ("vgs", "vg_uuid", vgname);
+}
+
+char *
+do_lvuuid (const char *device)
+{
+ return get_lvm_field ("lvs", "lv_uuid", device);
+}
+
+static char **
+get_lvm_fields (const char *cmd, const char *field, const char *device)
+{
+ char *out;
+ char *err;
+ int r = command (&out, &err,
+ "lvm", cmd,
+ "--unbuffered", "--noheadings", "-o", field,
+ device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s: %s", device, err);
+ free (out);
+ free (err);
+ return NULL;
+ }
+
+ free (err);
+
+ char **ret = split_lines (out);
+ free (out);
+
+ if (ret == NULL)
+ return NULL;
+
+ size_t i;
+ for (i = 0; ret[i] != NULL; ++i)
+ trim (ret[i]);
+
+ return ret;
+}
+
+char **
+do_vgpvuuids (const char *vgname)
+{
+ return get_lvm_fields ("vgs", "pv_uuid", vgname);
+}
+
+char **
+do_vglvuuids (const char *vgname)
+{
+ return get_lvm_fields ("vgs", "lv_uuid", vgname);
+}
+
+int
+do_vgscan (void)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "lvm", "vgscan", NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+ return 0;
+}
+
+/* Test if a device is a logical volume (RHBZ#619793).
+ *
+ * This is harder than it should be. A LV device like /dev/VG/LV is
+ * really a symlink to a device-mapper device like /dev/dm-0. However
+ * at the device-mapper (kernel) level, nothing is really known about
+ * LVM (a userspace concept). Therefore we use a convoluted method to
+ * determine this, by listing out known LVs and checking whether the
+ * rdev (major/minor) of the device we are passed matches any of them.
+ *
+ * Note use of 'stat' instead of 'lstat' so that symlinks are fully
+ * resolved.
+ */
+int
+do_is_lv (const char *device)
+{
+ struct stat stat1, stat2;
+
+ int r = stat (device, &stat1);
+ if (r == -1) {
+ reply_with_perror ("stat: %s", device);
+ return -1;
+ }
+
+ char **lvs = do_lvs ();
+ if (lvs == NULL)
+ return -1;
+
+ size_t i;
+ for (i = 0; lvs[i] != NULL; ++i) {
+ r = stat (lvs[i], &stat2);
+ if (r == -1) {
+ reply_with_perror ("stat: %s", lvs[i]);
+ free_strings (lvs);
+ return -1;
+ }
+ if (stat1.st_rdev == stat2.st_rdev) { /* found it */
+ free_strings (lvs);
+ return 1;
+ }
+ }
+
+ /* not found */
+ free_strings (lvs);
+ return 0;
+}
+
+/* Similar to is_lv above (RHBZ#638899). */
+char *
+do_lvm_canonical_lv_name (const char *device)
+{
+ struct stat stat1, stat2;
+
+ int r = stat (device, &stat1);
+ if (r == -1) {
+ reply_with_perror ("stat: %s", device);
+ return NULL;
+ }
+
+ char **lvs = do_lvs ();
+ if (lvs == NULL)
+ return NULL;
+
+ size_t i;
+ for (i = 0; lvs[i] != NULL; ++i) {
+ r = stat (lvs[i], &stat2);
+ if (r == -1) {
+ reply_with_perror ("stat: %s", lvs[i]);
+ free_strings (lvs);
+ return NULL;
+ }
+ if (stat1.st_rdev == stat2.st_rdev) { /* found it */
+ char *r = strdup (lvs[i]);
+ if (r == NULL) {
+ reply_with_perror ("strdup");
+ free_strings (lvs);
+ }
+ free_strings (lvs);
+ return r;
+ }
+ }
+
+ free_strings (lvs);
+
+ /* not found */
+ reply_with_error ("%s: not a logical volume", device);
+ return NULL;
+}
git.annexia.org / libguestfs.git / blobdiff