Add a 'super-switch' so that different format superblocks can be used.

[thirdparty/mdadm.git] / mdadm.c

diff --git a/mdadm.c b/mdadm.c
index daf24123ab40d430a71540da078170001b92fbc9..b738fadd5a0ea664b46016e3b7456f8507f8b789 100644 (file)
--- a/mdadm.c
+++ b/mdadm.c
@@ -32,7 +32,6 @@
 #include <ctype.h>
 
 
-
 int main(int argc, char *argv[])
 {
        int mode = 0;
@@ -41,6 +40,7 @@ int main(int argc, char *argv[])
        char *help_text;
        char *c;
        int rv;
+       int i;
 
        int chunk = 0;
        int size = -1;
@@ -81,6 +81,7 @@ int main(int argc, char *argv[])
        int daemonise = 0;
        char *pidfile = NULL;
        int oneshot = 0;
+       struct superswitch *ss = NULL;
 
        int copies;
 
@@ -273,6 +274,24 @@ int main(int argc, char *argv[])
                        }
                        continue;
 
+               case O(CREATE,'e'):
+               case O(ASSEMBLE,'e'):
+               case O(MISC,'e'): /* set metadata (superblock) information */
+                       if (ss) {
+                               fprintf(stderr, Name ": metadata information already given\n");
+                               exit(2);
+                       }
+                       for(i=0; superlist[i]; i++) 
+                               if (superlist[i]->match_metadata_desc(optarg)) {
+                                       ss = superlist[i];
+                                       break;
+                               }
+                       if (!ss) {
+                               fprintf(stderr, Name ": unrecognised metadata identifier: %s\n", optarg);
+                               exit(2);
+                       }
+                       continue;
+
                case O(GROW,'z'):
                case O(CREATE,'z'): /* size */
                        if (size >= 0) {
@@ -736,14 +755,14 @@ int main(int argc, char *argv[])
                                if (mdfd < 0)
                                        rv |= 1;
                                else {
-                                       rv |= Assemble(devlist->devname, mdfd, array_ident, configfile,
+                                       rv |= Assemble(ss, devlist->devname, mdfd, array_ident, configfile,
                                                       NULL,
                                                       readonly, runstop, update, verbose, force);
                                        close(mdfd);
                                }
                        }
                } else if (!scan)
-                       rv = Assemble(devlist->devname, mdfd, &ident, configfile,
+                       rv = Assemble(ss, devlist->devname, mdfd, &ident, configfile,
                                      devlist->next,
                                      readonly, runstop, update, verbose, force);
                else if (devs_found>0) {
@@ -764,7 +783,7 @@ int main(int argc, char *argv[])
                                        rv |= 1;
                                        continue;
                                }
-                               rv |= Assemble(dv->devname, mdfd, array_ident, configfile,
+                               rv |= Assemble(ss, dv->devname, mdfd, array_ident, configfile,
                                               NULL,
                                               readonly, runstop, update, verbose, force);
                                close(mdfd);
@@ -786,7 +805,7 @@ int main(int argc, char *argv[])
                                                /* already assembled, skip */
                                                ;
                                        else
-                                               rv |= Assemble(array_list->devname, mdfd,
+                                               rv |= Assemble(ss, array_list->devname, mdfd,
                                                               array_list, configfile,
                                                               NULL,
                                                               readonly, runstop, NULL, verbose, force);
@@ -798,7 +817,19 @@ int main(int argc, char *argv[])
                rv = Build(devlist->devname, mdfd, chunk, level, layout, raiddisks, devlist->next, assume_clean);
                break;
        case CREATE:
-               rv = Create(devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
+               if (ss == NULL) {
+                       for(i=0; superlist[i]; i++) 
+                               if (superlist[i]->match_metadata_desc("default")) {
+                                       ss = superlist[i];
+                                       break;
+                               }
+               }
+               if (!ss) {
+                       fprintf(stderr, Name ": internal error - no default metadata style\n");
+                       exit(2);
+               }
+
+               rv = Create(ss, devlist->devname, mdfd, chunk, level, layout, size<0 ? 0 : size,
                            raiddisks, sparedisks,
                            devs_found-1, devlist->next, runstop, verbose, force);
                break;