]> git.ipfire.org Git - thirdparty/mdadm.git/blobdiff - super0.c
Increase raid456 stripe cache size if needed to --grow the array.
[thirdparty/mdadm.git] / super0.c
index dbf59c8457819ec3bdc5ac74bcca110a06ba1342..d2338a9d2d689a8518d318b7830a992497307390 100644 (file)
--- a/super0.c
+++ b/super0.c
@@ -27,8 +27,9 @@
  *           Australia
  */
 
+#define HAVE_STDINT_H 1
 #include "mdadm.h"
-#include <openssl/sha.h> /* for SHA1 */
+#include "sha1.h"
 /*
  * All handling for the 0.90.0 version superblock is in
  * this file.
@@ -98,9 +99,10 @@ static void examine_super0(void *sbv, char *homehost)
                printf("           UUID : %08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
                       sb->set_uuid2, sb->set_uuid3);
                if (homehost) {
-                       unsigned char *hash = SHA1((unsigned char *)homehost,
-                                                  strlen(homehost),
-                                                  NULL);
+                       char buf[20];
+                       void *hash = sha1_buffer(homehost,
+                                                strlen(homehost),
+                                                buf);
                        if (memcmp(&sb->set_uuid2, hash, 8)==0)
                                printf(" (local to host %s)", homehost);
                }
@@ -189,6 +191,8 @@ static void examine_super0(void *sbv, char *homehost)
        case 0:
        case 4:
        case 5:
+       case 6:
+       case 10:
                printf("     Chunk Size : %dK\n", sb->chunk_size/1024);
                break;
        case -1:
@@ -227,9 +231,12 @@ static void brief_examine_super0(void *sbv)
 {
        mdp_super_t *sb = sbv;
        char *c=map_num(pers, sb->level);
+       char devname[20];
+
+       sprintf(devname, "/dev/md%d", sb->md_minor);
 
        printf("ARRAY %s level=%s num-devices=%d UUID=",
-              get_md_name(sb->md_minor),
+              devname,
               c?c:"-unknown-", sb->raid_disks);
        if (sb->minor_version >= 90)
                printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
@@ -249,9 +256,10 @@ static void detail_super0(void *sbv, char *homehost)
        else
                printf("%08x", sb->set_uuid0);
        if (homehost) {
-               unsigned char *hash = SHA1((unsigned char *)homehost,
-                                          strlen(homehost),
-                                          NULL);
+               char buf[20];
+               void *hash = sha1_buffer(homehost,
+                                        strlen(homehost),
+                                        buf);
                if (memcmp(&sb->set_uuid2, hash, 8)==0)
                        printf(" (local to host %s)", homehost);
        }
@@ -269,6 +277,18 @@ static void brief_detail_super0(void *sbv)
                printf("%08x", sb->set_uuid0);
 }
 #endif
+
+static int match_home0(void *sbv, char *homehost)
+{
+       mdp_super_t *sb = sbv;
+       char buf[20];
+       char *hash = sha1_buffer(homehost,
+                                strlen(homehost),
+                                buf);
+
+       return (memcmp(&sb->set_uuid2, hash, 8)==0);
+}
+
 static void uuid_from_super0(int uuid[4], void * sbv)
 {
        mdp_super_t *super = sbv;
@@ -300,6 +320,7 @@ static void getinfo_super0(struct mdinfo *info, void *sbv)
        info->array.ctime = sb->ctime;
        info->array.utime = sb->utime;
        info->array.chunk_size = sb->chunk_size;
+       info->array.state = sb->state;
        info->component_size = sb->size*2;
 
        info->disk.state = sb->this_disk.state;
@@ -323,10 +344,11 @@ static void getinfo_super0(struct mdinfo *info, void *sbv)
        } else
                info->reshape_active = 0;
 
-       info->name[0] = 0;
+       sprintf(info->name, "%d", sb->md_minor);
        /* work_disks is calculated rather than read directly */
        for (i=0; i < MD_SB_DISKS; i++)
                if ((sb->disks[i].state & (1<<MD_DISK_SYNC)) &&
+                   (sb->disks[i].raid_disk < info->array.raid_disks) &&
                    (sb->disks[i].state & (1<<MD_DISK_ACTIVE)) &&
                    !(sb->disks[i].state & (1<<MD_DISK_FAULTY)))
                        working ++;
@@ -334,7 +356,9 @@ static void getinfo_super0(struct mdinfo *info, void *sbv)
 }
 
 
-static int update_super0(struct mdinfo *info, void *sbv, char *update, char *devname, int verbose)
+static int update_super0(struct mdinfo *info, void *sbv, char *update,
+                        char *devname, int verbose,
+                        int uuid_set, char *homehost)
 {
        /* NOTE: for 'assemble' and 'force' we need to return non-zero if any change was made.
         * For others, the return value is ignored.
@@ -388,13 +412,21 @@ static int update_super0(struct mdinfo *info, void *sbv, char *update, char *dev
                        } else if (i >= sb->raid_disks && sb->disks[i].number == 0)
                                sb->disks[i].state = 0;
        }
-       if (strcmp(update, "force")==0) {
+       if (strcmp(update, "force-one")==0) {
+               /* Not enough devices for a working array, so
+                * bring this one up-to-date.
+                */
                __u32 ehi = sb->events_hi, elo = sb->events_lo;
                sb->events_hi = (info->events>>32) & 0xFFFFFFFF;
                sb->events_lo = (info->events) & 0xFFFFFFFF;
                if (sb->events_hi != ehi ||
                    sb->events_lo != elo)
                        rv = 1;
+       }
+       if (strcmp(update, "force-array")==0) {
+               /* degraded array and 'force' requested, so
+                * maybe need to mark it 'clean'
+                */
                if ((sb->level == 5 || sb->level == 4 || sb->level == 6) &&
                    (sb->state & (1 << MD_SB_CLEAN)) == 0) {
                        /* need to force clean */
@@ -411,16 +443,6 @@ static int update_super0(struct mdinfo *info, void *sbv, char *update, char *dev
                        rv = 1;
                }
        }
-       if (strcmp(update, "newdev") == 0) {
-               int d = info->disk.number;
-               memset(&sb->disks[d], 0, sizeof(sb->disks[d]));
-               sb->disks[d].number = d;
-               sb->disks[d].major = info->disk.major;
-               sb->disks[d].minor = info->disk.minor;
-               sb->disks[d].raid_disk = info->disk.raid_disk;
-               sb->disks[d].state = info->disk.state;
-               sb->this_disk = sb->disks[d];
-       }
        if (strcmp(update, "grow") == 0) {
                sb->raid_disks = info->array.raid_disks;
                sb->nr_disks = info->array.nr_disks;
@@ -440,7 +462,21 @@ static int update_super0(struct mdinfo *info, void *sbv, char *update, char *dev
                sb->state &= ~(1<<MD_SB_CLEAN);
                sb->recovery_cp = 0;
        }
+       if (strcmp(update, "homehost") == 0 &&
+           homehost) {
+               uuid_set = 0;
+               update = "uuid";
+               info->uuid[0] = sb->set_uuid0;
+               info->uuid[1] = sb->set_uuid1;
+       }
        if (strcmp(update, "uuid") == 0) {
+               if (!uuid_set && homehost) {
+                       char buf[20];
+                       char *hash = sha1_buffer(homehost,
+                                                strlen(homehost),
+                                                buf);
+                       memcpy(info->uuid+2, hash, 8);
+               }
                sb->set_uuid0 = info->uuid[0];
                sb->set_uuid1 = info->uuid[1];
                sb->set_uuid2 = info->uuid[2];
@@ -458,12 +494,6 @@ static int update_super0(struct mdinfo *info, void *sbv, char *update, char *dev
        return rv;
 }
 
-static __u64 event_super0(void *sbv)
-{
-       mdp_super_t *sb = sbv;
-       return md_event(sb);
-}
-
 /*
  * For verion-0 superblock, the homehost is 'stored' in the
  * uuid.  8 bytes for a hash of the host leaving 8 bytes
@@ -519,9 +549,10 @@ static int init_super0(struct supertype *st, void **sbp, mdu_array_info_t *info,
        if (rfd >= 0)
                close(rfd);
        if (homehost) {
-               unsigned char *hash = SHA1((unsigned char*)homehost,
-                                          strlen(homehost),
-                                          NULL);
+               char buf[20];
+               char *hash = sha1_buffer(homehost,
+                                        strlen(homehost),
+                                        buf);
                memcpy(&sb->set_uuid2, hash, 8);
        }
 
@@ -587,7 +618,8 @@ static int store_super0(struct supertype *st, int fd, void *sbv)
        if (super->state & (1<<MD_SB_BITMAP_PRESENT)) {
                struct bitmap_super_s * bm = (struct bitmap_super_s*)(super+1);
                if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC)
-                       write(fd, bm, sizeof(*bm));
+                       if (write(fd, bm, sizeof(*bm)) != sizeof(*bm))
+                           return 5;
        }
 
        fsync(fd);
@@ -606,7 +638,6 @@ static int write_init_super0(struct supertype *st, void *sbv, mdu_disk_info_t *d
        }
 
        sb->disks[dinfo->number].state &= ~(1<<MD_DISK_FAULTY);
-       sb->disks[dinfo->number].state |= (1<<MD_DISK_SYNC);
 
        sb->this_disk = sb->disks[dinfo->number];
        sb->sb_csum = calc_sb0_csum(sb);
@@ -797,7 +828,10 @@ static __u64 avail_size0(struct supertype *st, __u64 devsize)
        return MD_NEW_SIZE_SECTORS(devsize);
 }
 
-static int add_internal_bitmap0(struct supertype *st, void *sbv, int chunk, int delay, int write_behind, unsigned long long size, int may_change, int major)
+static int add_internal_bitmap0(struct supertype *st, void *sbv, int *chunkp,
+                               int delay, int write_behind,
+                               unsigned long long size, int may_change,
+                               int major)
 {
        /*
         * The bitmap comes immediately after the superblock and must be 60K in size
@@ -808,6 +842,7 @@ static int add_internal_bitmap0(struct supertype *st, void *sbv, int chunk, int
        unsigned long long bits;
        unsigned long long max_bits = 60*1024*8;
        unsigned long long min_chunk;
+       int chunk = *chunkp;
        mdp_super_t *sb = sbv;
        bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES);
 
@@ -833,7 +868,7 @@ static int add_internal_bitmap0(struct supertype *st, void *sbv, int chunk, int
        bms->daemon_sleep = __cpu_to_le32(delay);
        bms->sync_size = __cpu_to_le64(size);
        bms->write_behind = __cpu_to_le32(write_behind);
-
+       *chunkp = chunk;
        return 1;
 }
 
@@ -927,10 +962,10 @@ struct superswitch super0 = {
        .detail_super = detail_super0,
        .brief_detail_super = brief_detail_super0,
 #endif
+       .match_home = match_home0,
        .uuid_from_super = uuid_from_super0,
        .getinfo_super = getinfo_super0,
        .update_super = update_super0,
-       .event_super = event_super0,
        .init_super = init_super0,
        .add_to_super = add_to_super0,
        .store_super = store_super0,