Added possibility to change the name of IMSM volume.
mdadm --misc --update=name <new-name> [ -N <name> | -u <uuid> ] \
<container-or-devlist>
<new-name> must follow --update=name (or -U=name),
<container-or-devlist> is the list of devices provided with the same
rules as delete subarray.
Note that target array must be stopped before an attempt to rename.
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@xxxxxxxxx>
---
Manage.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
mdadm.c | 18 ++++++++++--
mdadm.h | 1 +
3 files changed, 104 insertions(+), 3 deletions(-)
diff --git a/Manage.c b/Manage.c
index f848d8b..e867790 100644
--- a/Manage.c
+++ b/Manage.c
@@ -871,4 +871,92 @@ int autodetect(void)
}
return rv;
}
+
+int Rename(mddev_dev_t devlist, int force, int quiet, struct mddev_ident_s *ident)
+{
+ char new_name[36] = "";
+ mddev_dev_t dv;
+ struct array_dev_list *dl;
+ int rv;
+ int i, found;
+ struct mdinfo info;
+
+ if (!devlist)
+ return 1;
+
+ /* get new name */
+ if (devlist->used == 1) {
+ strncpy(new_name, devlist->devname, sizeof(new_name));
+ devlist = devlist->next;
+ } else {
+ for (dv = devlist; dv;)
+ {
+ if (dv->used == 1) {
+ mddev_dev_t t;
+ t = dv;
+ strncpy(new_name, dv->devname, sizeof(new_name));
+ dv = dv->next;
+ free(t);
+ continue;
+ }
+ dv = dv->next;
+ }
+ }
+
+ if ((dl = check_devices(devlist, force, quiet, "imsm")) == NULL) {
+ return 1;
+ }
+
+ if (new_name[0] == '\0') {
+ if (!quiet)
+ fprintf(stderr, Name ": New name is not provided. Provide new name right after --update=name switch\n");
+ return 1;
+ }
+
+ while(dl) {
+ for (i = 0, found = 0, rv = 0; rv == 0; i++) {
+ snprintf(dl->st->subarray, sizeof(dl->st->subarray) - 1, "%d", i);
+ rv = dl->st->ss->load_super(dl->st, dl->fd, NULL);
+ if (rv)
+ break;
+
+ dl->st->ss->getinfo_super(dl->st, &info);
+ /* match based on subarray number, name or uuid */
+ if ((ident->member_index != -1 && i == ident->member_index) ||
+ (ident->name[0] && !strncmp(info.name, ident->name, sizeof(info.name))) ||
+ (ident->uuid_set && same_uuid(info.uuid, ident->uuid, dl->st->ss->swapuuid))) {
+ if (dl->st->loaded_container) {
+ struct map_ent *map;
+ int devname;
+ map_read(&map);
+ if (!find_array_minor(info.text_version, map, &devname)) {
+ fprintf(stderr, Name ": Attempting to modify properties of array,"
+ " which is active.\n Stop array and try again\n");
+ map_free(map);
+ return -1;
+ }
+ map_free(map);
+ }
+ rv = dl->st->ss->rename_subarray(dl->st, new_name, dl->fd);
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found) {
+ if (!quiet)
+ fprintf(stderr, Name ": Could not find array with given identifier\n");
+ rv = 1;
+ }
+
+ if (!quiet && rv && found)
+ fprintf(stderr, Name ": Failed to rename\n");
+
+ dl = dl->next;
+ }
+
+ free_array_dev_list(dl);
+
+ return rv;
+}
#endif
diff --git a/mdadm.c b/mdadm.c
index 7cc2ad9..c6b28b7 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -103,6 +103,7 @@ int main(int argc, char *argv[])
int dosyslog = 0;
int rebuild_map = 0;
int auto_update_home = 0;
+ int new_name = 0;
int print_help = 0;
FILE *outf;
@@ -293,7 +294,8 @@ int main(int argc, char *argv[])
continue;
}
if (opt == 1) {
- /* an undecorated option - must be a device name.
+ /* an undecorated option - must be a device name, except MISC-rename
+ * New name is provided this way
*/
if (devs_found > 0 && mode == '@' && !devmode) {
fprintf(stderr, Name ": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg);
@@ -312,12 +314,13 @@ int main(int argc, char *argv[])
dv->disposition = devmode;
dv->writemostly = writemostly;
dv->re_add = re_add;
- dv->used = 0;
+ dv->used = new_name;
dv->content = NULL;
dv->next = NULL;
*devlistend = dv;
devlistend = &dv->next;
+ new_name = 0;
devs_found++;
continue;
}
@@ -642,8 +645,11 @@ int main(int argc, char *argv[])
continue;
if (strcmp(update, "uuid")==0)
continue;
- if (strcmp(update, "name")==0)
+ if (strcmp(update, "name")==0) {
+ if (mode == MISC)
+ new_name = 1;
continue;
+ }
if (strcmp(update, "homehost")==0)
continue;
if (strcmp(update, "devicesize")==0)
@@ -1307,6 +1313,12 @@ int main(int argc, char *argv[])
exit(2);
}
rv = DeleteSubarray(devlist, force, quiet, &ident);
+ } else if (update && !strcmp(update, "name")) {
+ if (!ident.uuid_set && !ident.name[0] && ident.member_index == -1) {
+ fprintf(stderr, Name ": Name, Uuid or Member Index must be set for --zero-subarray.\n");
+ exit(2);
+ }
+ rv = Rename(devlist, force, quiet, &ident);
} else {
if (devlist == NULL) {
if ((devmode=='D' || devmode == Waitclean) && scan) {
diff --git a/mdadm.h b/mdadm.h
index 81fde4c..ae9d48d 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -828,6 +828,7 @@ extern int Monitor(mddev_dev_t devlist,
extern int Kill(char *dev, struct supertype *st, int force, int quiet, int noexcl);
extern int DeleteSubarray(mddev_dev_t devlist, int force, int quiet, struct mddev_ident_s *ident);
+extern int Rename(mddev_dev_t devlist, int force, int quiet, struct mddev_ident_s *ident);
extern int Wait(char *dev);
extern int WaitClean(char *dev, int sock, int verbose);
--
1.6.4.2
--
Best Regards,
Przemyslaw Hawrylewicz-Czarnowski
Software Development Engineer
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