diff options
Diffstat (limited to 'mdadm.c')
| -rw-r--r-- | mdadm.c | 43 |
1 files changed, 42 insertions, 1 deletions
@@ -46,6 +46,7 @@ int main(int argc, char *argv[]) int chunk = 0; long long size = -1; + long long array_size = -1; int level = UnSet; int layout = UnSet; int raiddisks = 0; @@ -397,6 +398,24 @@ int main(int argc, char *argv[]) } continue; + case O(GROW,'Z'): /* array size */ + if (array_size >= 0) { + fprintf(stderr, Name ": array-size may only be specified once. " + "Second value is %s.\n", optarg); + exit(2); + } + if (strcmp(optarg, "max") == 0) + array_size = 0; + else { + array_size = parse_size(optarg); + if (array_size <= 0) { + fprintf(stderr, Name ": invalid array size: %s\n", + optarg); + exit(2); + } + } + continue; + case O(GROW,'l'): /* hack - needed to understand layout */ case O(CREATE,'l'): case O(BUILD,'l'): /* set raid level*/ @@ -1372,6 +1391,28 @@ int main(int argc, char *argv[]) break; case GROW: + if (array_size >= 0) { + /* alway impose array size first, independent of + * anything else + */ + struct mdinfo sra; + int err; + sysfs_init(&sra, mdfd, 0); + if (array_size == 0) + err = sysfs_set_str(&sra, NULL, "array_size", "default"); + else + err = sysfs_set_num(&sra, NULL, "array_size", array_size / 2); + if (err < 0) { + if (errno == E2BIG) + fprintf(stderr, Name ": --array-size setting" + " is too large.\n"); + else + fprintf(stderr, Name ": current kernel does" + " not support setting --array-size\n"); + rv = 1; + break; + } + } if (devs_found > 1) { /* must be '-a'. */ @@ -1398,7 +1439,7 @@ int main(int argc, char *argv[]) if (delay == 0) delay = DEFAULT_BITMAP_DELAY; rv = Grow_addbitmap(devlist->devname, mdfd, bitmap_file, bitmap_chunk, delay, write_behind, force); - } else + } else if (array_size < 0) fprintf(stderr, Name ": no changes to --grow\n"); break; case INCREMENTAL: |