]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - mdadm.c
mdadm.man: added encouragement to shrink filesystem before array.
[thirdparty/mdadm.git] / mdadm.c
diff --git a/mdadm.c b/mdadm.c
index 3dc8be950121cadb279498d787c653c70be91d76..efba8dd84cd512a74aad7b70f26324935a2cd5b7 100644 (file)
--- a/mdadm.c
+++ b/mdadm.c
@@ -46,7 +46,6 @@ int main(int argc, char *argv[])
        int layout = UnSet;
        char *layout_str = NULL;
        int raiddisks = 0;
-       int max_disks = MD_SB_DISKS; /* just a default */
        int sparedisks = 0;
        struct mddev_ident_s ident;
        char *configfile = NULL;
@@ -103,6 +102,7 @@ int main(int argc, char *argv[])
        int dosyslog = 0;
        int rebuild_map = 0;
        int auto_update_home = 0;
+       char *subarray = NULL;
 
        int print_help = 0;
        FILE *outf;
@@ -151,13 +151,10 @@ int main(int argc, char *argv[])
                        continue;
 
                case 'b':
-                       if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW)
+                       if (mode == ASSEMBLE || mode == BUILD || mode == CREATE || mode == GROW ||
+                           mode == INCREMENTAL || mode == MANAGE)
                                break; /* b means bitmap */
                        brief = 1;
-                       if (optarg) {
-                               fprintf(stderr, Name ": -b cannot have any extra immediately after it, sorry.\n");
-                               exit(2);
-                       }
                        continue;
 
                case 'Y': export++;
@@ -219,6 +216,15 @@ int main(int argc, char *argv[])
                case 'W':
                case Waitclean:
                case DetailPlatform:
+               case KillSubarray:
+               case UpdateSubarray:
+                       if (opt == KillSubarray || opt == UpdateSubarray) {
+                               if (subarray) {
+                                       fprintf(stderr, Name ": subarray can only be specified once\n");
+                                       exit(2);
+                               }
+                               subarray = optarg;
+                       }
                case 'K': if (!mode) newmode = MISC; break;
                }
                if (mode && newmode == mode) {
@@ -267,7 +273,8 @@ int main(int argc, char *argv[])
                                        continue;
                                }
                                /* No mode yet, and this is the second device ... */
-                               fprintf(stderr, Name ": An option must be given to set the mode before a second device is listed\n");
+                               fprintf(stderr, Name ": An option must be given to set the mode before a second device\n"
+                                       "       (%s) is listed\n", optarg);
                                exit(2);
                        }
                        if (option_index >= 0)
@@ -361,7 +368,6 @@ int main(int argc, char *argv[])
                                fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
                                exit(2);
                        }
-                       max_disks = ss->max_devs;
                        continue;
 
                case O(MANAGE,'W'):
@@ -591,11 +597,16 @@ int main(int argc, char *argv[])
 
                case O(CREATE,'N'):
                case O(ASSEMBLE,'N'):
+               case O(MISC,'N'):
                        if (ident.name[0]) {
                                fprintf(stderr, Name ": name cannot be set twice.   "
                                        "Second value %s.\n", optarg);
                                exit(2);
                        }
+                       if (mode == MISC && !subarray) {
+                               fprintf(stderr, Name ": -N/--name only valid with --update-subarray in misc mode\n");
+                               exit(2);
+                       }
                        if (strlen(optarg) > 32) {
                                fprintf(stderr, Name ": name '%s' is too long, 32 chars max.\n",
                                        optarg);
@@ -622,11 +633,16 @@ int main(int argc, char *argv[])
                        continue;
 
                case O(ASSEMBLE,'U'): /* update the superblock */
+               case O(MISC,'U'):
                        if (update) {
                                fprintf(stderr, Name ": Can only update one aspect of superblock, both %s and %s given.\n",
                                        update, optarg);
                                exit(2);
                        }
+                       if (mode == MISC && !subarray) {
+                               fprintf(stderr, Name ": Only subarrays can be updated in misc mode\n");
+                               exit(2);
+                       }
                        update = optarg;
                        if (strcmp(update, "sparc2.2")==0)
                                continue;
@@ -644,6 +660,8 @@ int main(int argc, char *argv[])
                                continue;
                        if (strcmp(update, "devicesize")==0)
                                continue;
+                       if (strcmp(update, "no-bitmap")==0)
+                               continue;
                        if (strcmp(update, "byteorder")==0) {
                                if (ss) {
                                        fprintf(stderr, Name ": must not set metadata type with --update=byteorder.\n");
@@ -670,10 +688,12 @@ int main(int argc, char *argv[])
                        }
                        fprintf(outf, "Valid --update options are:\n"
                "     'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
-               "     'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
+               "     'summaries', 'homehost', 'byteorder', 'devicesize',\n"
+               "     'no-bitmap'\n");
                        exit(outf == stdout ? 0 : 2);
 
                case O(INCREMENTAL,NoDegraded):
+                       fprintf(stderr, Name ": --no-degraded is deprecated in Incremental mode\n");
                case O(ASSEMBLE,NoDegraded): /* --no-degraded */
                        runstop = -1; /* --stop isn't allowed for --assemble,
                                       * so we overload slightly */
@@ -776,6 +796,9 @@ int main(int argc, char *argv[])
                        devmode = 'r';
                        continue;
                case O(MANAGE,'f'): /* set faulty */
+               case O(INCREMENTAL,'f'): /* r for incremental is taken, use f
+                                         * even though we will both fail and
+                                         * remove the device */
                        devmode = 'f';
                        continue;
                case O(INCREMENTAL,'R'):
@@ -796,6 +819,9 @@ int main(int argc, char *argv[])
                        }
                        runstop = -1;
                        continue;
+               case O(MANAGE,'t'):
+                       test = 1;
+                       continue;
 
                case O(MISC,'Q'):
                case O(MISC,'D'):
@@ -809,10 +835,21 @@ int main(int argc, char *argv[])
                case O(MISC,'W'):
                case O(MISC, Waitclean):
                case O(MISC, DetailPlatform):
+               case O(MISC, KillSubarray):
+               case O(MISC, UpdateSubarray):
                        if (devmode && devmode != opt &&
                            (devmode == 'E' || (opt == 'E' && devmode != 'Q'))) {
-                               fprintf(stderr, Name ": --examine/-E cannot be given with -%c\n",
-                                       devmode =='E'?opt:devmode);
+                               fprintf(stderr, Name ": --examine/-E cannot be given with ");
+                               if (devmode == 'E') {
+                                       if (option_index >= 0)
+                                               fprintf(stderr, "--%s\n",
+                                                       long_options[option_index].name);
+                                       else
+                                               fprintf(stderr, "-%c\n", opt);
+                               } else if (isalpha(devmode))
+                                       fprintf(stderr, "-%c\n", devmode);
+                               else
+                                       fprintf(stderr, "previous option\n");
                                exit(2);
                        }
                        devmode = opt;
@@ -874,7 +911,8 @@ int main(int argc, char *argv[])
                                continue;
                        }
                        /* probable typo */
-                       fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n");
+                       fprintf(stderr, Name ": bitmap file must contain a '/', or be 'internal', or 'none'\n"
+                               "       not '%s'\n", optarg);
                        exit(2);
 
                case O(GROW,BitmapChunk):
@@ -1018,11 +1056,6 @@ int main(int argc, char *argv[])
        }
 
        if (raiddisks) {
-               if (raiddisks > max_disks) {
-                       fprintf(stderr, Name ": invalid number of raid devices: %d\n",
-                               raiddisks);
-                       exit(2);
-               }
                if (raiddisks == 1 &&  !force && level != -5) {
                        fprintf(stderr, Name ": '1' is an unusual number of drives for an array, so it is probably\n"
                                "     a mistake.  If you really mean it you will need to specify --force before\n"
@@ -1030,13 +1063,6 @@ int main(int argc, char *argv[])
                        exit(2);
                }
        }
-       if (sparedisks) {
-               if ( sparedisks > max_disks - raiddisks) {
-                       fprintf(stderr, Name ": invalid number of spare-devices: %d\n",
-                               sparedisks);
-                       exit(2);
-               }
-       }
 
        if (homehost == NULL)
                homehost = conf_get_homehost(&require_homehost);
@@ -1047,6 +1073,12 @@ int main(int argc, char *argv[])
                }
        }
 
+       if ((mode != MISC || devmode != 'E') &&
+           geteuid() != 0) {
+               fprintf(stderr, Name ": must be super-user to perform this action\n");
+               exit(1);
+       }
+
        ident.autof = autof;
 
        rv = 0;
@@ -1057,7 +1089,7 @@ int main(int argc, char *argv[])
                        rv = Manage_ro(devlist->devname, mdfd, readonly);
                if (!rv && devs_found>1)
                        rv = Manage_subdevs(devlist->devname, mdfd,
-                                           devlist->next, verbose-quiet);
+                                           devlist->next, verbose-quiet, test);
                if (!rv && readonly < 0)
                        rv = Manage_ro(devlist->devname, mdfd, readonly);
                if (!rv && runstop)
@@ -1115,9 +1147,10 @@ int main(int argc, char *argv[])
                                               verbose-quiet, force);
                        }
                } else {
-                       mddev_ident_t array_list =  conf_get_ident(NULL);
+                       mddev_ident_t a, array_list =  conf_get_ident(NULL);
                        mddev_dev_t devlist = conf_get_devs();
                        int cnt = 0;
+                       int failures, successes;
                        if (devlist == NULL) {
                                fprintf(stderr, Name ": No devices listed in conf file were found.\n");
                                exit(1);
@@ -1130,21 +1163,38 @@ int main(int argc, char *argv[])
                                fprintf(stderr, Name ": --backup_file not meaningful with a --scan assembly.\n");
                                exit(1);
                        }
-                       for (; array_list; array_list = array_list->next) {
-                               if (array_list->devname &&
-                                   strcasecmp(array_list->devname, "<ignore>") == 0)
-                                       continue;
-                               if (array_list->autof == 0)
-                                       array_list->autof = autof;
+                       for (a = array_list; a ; a = a->next) {
+                               a->assembled = 0;
+                               if (a->autof == 0)
+                                       a->autof = autof;
+                       }
+                       do {
+                               failures = 0;
+                               successes = 0;
+                               rv = 0;
+                               for (a = array_list; a ; a = a->next) {
+                                       int r;
+                                       if (a->assembled)
+                                               continue;
+                                       if (a->devname &&
+                                           strcasecmp(a->devname, "<ignore>") == 0)
+                                               continue;
                                
-                               rv |= Assemble(ss, array_list->devname,
-                                              array_list,
-                                              NULL, NULL,
-                                              readonly, runstop, NULL,
-                                              homehost, require_homehost,
-                                              verbose-quiet, force);
-                               cnt++;
-                       }
+                                       r = Assemble(ss, a->devname,
+                                                    a,
+                                                    NULL, NULL,
+                                                    readonly, runstop, NULL,
+                                                    homehost, require_homehost,
+                                                    verbose-quiet, force);
+                                       if (r == 0) {
+                                               a->assembled = 1;
+                                               successes++;
+                                       } else
+                                               failures++;
+                                       rv |= r;
+                                       cnt++;
+                               }
+                       } while (failures && successes);
                        if (homehost && cnt == 0) {
                                /* Maybe we can auto-assemble something.
                                 * Repeatedly call Assemble in auto-assemble mode
@@ -1361,7 +1411,16 @@ int main(int argc, char *argv[])
                                                     export, test, homehost);
                                        continue;
                                case 'K': /* Zero superblock */
-                                       rv |= Kill(dv->devname, force, quiet,0);
+                                       if (ss)
+                                               rv |= Kill(dv->devname, ss, force, quiet,0);
+                                       else {
+                                               int q = quiet;
+                                               do {
+                                                       rv |= Kill(dv->devname, NULL, force, q, 0);
+                                                       q = 1;
+                                               } while (rv == 0);
+                                               rv &= ~2;
+                                       }
                                        continue;
                                case 'Q':
                                        rv |= Query(dv->devname); continue;
@@ -1371,6 +1430,18 @@ int main(int argc, char *argv[])
                                        rv |= Wait(dv->devname); continue;
                                case Waitclean:
                                        rv |= WaitClean(dv->devname, -1, verbose-quiet); continue;
+                               case KillSubarray:
+                                       rv |= Kill_subarray(dv->devname, subarray, quiet);
+                                       continue;
+                               case UpdateSubarray:
+                                       if (update == NULL) {
+                                               fprintf(stderr,
+                                                       Name ": -U/--update must be specified with --update-subarray\n");
+                                               rv |= 1;
+                                               continue;
+                                       }
+                                       rv |= Update_subarray(dv->devname, subarray, update, &ident, quiet);
+                                       continue;
                                }
                                mdfd = open_mddev(dv->devname, 1);
                                if (mdfd>=0) {
@@ -1485,6 +1556,11 @@ int main(int argc, char *argv[])
                         ": --incremental --scan meaningless without --run.\n");
                                break;
                        }
+                       if (devmode == 'f') {
+                               fprintf(stderr, Name
+                        ": --incremental --scan --fail not supported.\n");
+                               break;
+                       }
                        rv = IncrementalScan(verbose);
                }
                if (!devlist) {
@@ -1501,6 +1577,10 @@ int main(int argc, char *argv[])
                        rv = 1;
                        break;
                }
+               if (devmode == 'f') {
+                       rv = IncrementalRemove(devlist->devname, verbose-quiet);
+                       break;
+               }
                rv = Incremental(devlist->devname, verbose-quiet, runstop,
                                 ss, homehost, require_homehost, autof);
                break;