/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2004 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
*/
/* These are only valid with feature bit '4' */
- __u64 reshape_position; /* next address in array-space for reshape */
__u32 new_level; /* new level we are reshaping to */
+ __u64 reshape_position; /* next address in array-space for reshape */
__u32 delta_disks; /* change in number of raid_disks */
__u32 new_layout; /* new layout */
__u32 new_chunk; /* new chunk size (bytes) */
#define MD_FEATURE_ALL (1|2|4)
#ifndef offsetof
-#define offsetof(t,f) ((int)&(((t*)0)->f))
+#define offsetof(t,f) ((size_t)&(((t*)0)->f))
#endif
static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb)
{
disk_csum = sb->sb_csum;
sb->sb_csum = 0;
newcsum = 0;
- for (i=0; size>=4; size -= 4 )
- newcsum += __le32_to_cpu(*isuper++);
+ for (i=0; size>=4; size -= 4 ) {
+ newcsum += __le32_to_cpu(*isuper);
+ isuper++;
+ }
if (size == 2)
newcsum += __le16_to_cpu(*(unsigned short*) isuper);
csum = (newcsum & 0xffffffff) + (newcsum >> 32);
sb->sb_csum = disk_csum;
- return csum;
+ return __cpu_to_le32(csum);
}
#ifndef MDASSEMBLE
-static void examine_super1(void *sbv)
+static void examine_super1(void *sbv, char *homehost)
{
struct mdp_superblock_1 *sb = sbv;
time_t atime;
int faulty;
int i;
char *c;
+ int l = homehost ? strlen(homehost) : 0;
+ int layout;
printf(" Magic : %08x\n", __le32_to_cpu(sb->magic));
printf(" Version : %02d\n", 1);
printf("%02x", sb->set_uuid[i]);
}
printf("\n");
- printf(" Name : %.32s\n", sb->set_name);
-
+ printf(" Name : %.32s", sb->set_name);
+ if (l > 0 && l < 32 &&
+ sb->set_name[l] == ':' &&
+ strncmp(sb->set_name, homehost, l) == 0)
+ printf(" (local to host %s)", homehost);
+ printf("\n");
atime = __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL;
printf(" Creation Time : %.24s\n", ctime(&atime));
c=map_num(pers, __le32_to_cpu(sb->level));
switch(__le32_to_cpu(sb->level)) {
case 1: ddsks=1;break;
case 4:
- case 5: ddsks = sb->raid_disks-1; break;
- case 6: ddsks = sb->raid_disks-2; break;
- case 10: ddsks = sb->raid_disks / (sb->layout&255) / ((sb->layout>>8)&255);
+ case 5: ddsks = __le32_to_cpu(sb->raid_disks)-1; break;
+ case 6: ddsks = __le32_to_cpu(sb->raid_disks)-2; break;
+ case 10:
+ layout = __le32_to_cpu(sb->layout);
+ ddsks = __le32_to_cpu(sb->raid_disks)
+ / (layout&255) / ((layout>>8)&255);
}
if (ddsks)
- printf(" Array Size : %llu%s\n", ddsks*(unsigned long long)sb->size, human_size(ddsks*sb->size<<9));
+ printf(" Array Size : %llu%s\n",
+ ddsks*(unsigned long long)__le64_to_cpu(sb->size),
+ human_size(ddsks*__le64_to_cpu(sb->size)<<9));
if (sb->size != sb->data_size)
- printf(" Used Size : %llu%s\n", (unsigned long long)sb->size, human_size(sb->size<<9));
+ printf(" Used Size : %llu%s\n",
+ (unsigned long long)__le64_to_cpu(sb->size),
+ human_size(__le64_to_cpu(sb->size)<<9));
}
if (sb->data_offset)
printf(" Data Offset : %llu sectors\n", (unsigned long long)__le64_to_cpu(sb->data_offset));
printf(" New Layout : %s\n", c?c:"-unknown-");
}
if (__le32_to_cpu(sb->level) == 10) {
- printf(" New Layout : near=%d, far=%d\n",
+ printf(" New Layout : near=%d, %s=%d\n",
__le32_to_cpu(sb->new_layout)&255,
+ (__le32_to_cpu(sb->new_layout)&0x10000)?"offset":"far",
(__le32_to_cpu(sb->new_layout)>>8)&255);
}
}
}
if (__le32_to_cpu(sb->level) == 10) {
int lo = __le32_to_cpu(sb->layout);
- printf(" Layout : near=%d, far=%d\n",
- lo&255, (lo>>8)&255);
+ printf(" Layout : near=%d, %s=%d\n",
+ lo&255,
+ (lo&0x10000)?"offset":"far",
+ (lo>>8)&255);
}
switch(__le32_to_cpu(sb->level)) {
case 0:
default: break;
}
printf("\n");
+ printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number));
+ for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--)
+ if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff)
+ break;
+ for (d=0; d < i; d++) {
+ int role = __le16_to_cpu(sb->dev_roles[d]);
+ if (d) printf(", ");
+ if (role == 0xffff) printf("empty");
+ else if(role == 0xfffe) printf("failed");
+ else printf("%d", role);
+ }
+ printf(")\n");
printf(" Array State : ");
for (d=0; d<__le32_to_cpu(sb->raid_disks); d++) {
int cnt = 0;
{
struct mdp_superblock_1 *sb = sbv;
int i;
-
+ char *nm;
char *c=map_num(pers, __le32_to_cpu(sb->level));
- printf("ARRAY /dev/?? level=%s metadata=1 num-devices=%d UUID=",
- c?c:"-unknown-", sb->raid_disks);
+ nm = strchr(sb->set_name, ':');
+ if (nm)
+ nm++;
+ else if (sb->set_name[0])
+ nm = sb->set_name;
+ else
+ nm = "??";
+
+ printf("ARRAY /dev/md/%s level=%s metadata=1 num-devices=%d UUID=",
+ nm,
+ c?c:"-unknown-", __le32_to_cpu(sb->raid_disks));
for (i=0; i<16; i++) {
- printf("%02x", sb->set_uuid[i]);
if ((i&3)==0 && i != 0) printf(":");
+ printf("%02x", sb->set_uuid[i]);
}
if (sb->set_name[0])
printf(" name=%.32s", sb->set_name);
printf("\n");
}
-static void detail_super1(void *sbv)
+static void detail_super1(void *sbv, char *homehost)
{
struct mdp_superblock_1 *sb = sbv;
int i;
-
- printf(" Name : %.32s\n", sb->set_name);
- printf(" UUID : ");
+ int l = homehost ? strlen(homehost) : 0;
+
+ printf(" Name : %.32s", sb->set_name);
+ if (l > 0 && l < 32 &&
+ sb->set_name[l] == ':' &&
+ strncmp(sb->set_name, homehost, l) == 0)
+ printf(" (local to host %s)", homehost);
+ printf("\n UUID : ");
for (i=0; i<16; i++) {
if ((i&3)==0 && i != 0) printf(":");
printf("%02x", sb->set_uuid[i]);
#endif
+static int match_home1(void *sbv, char *homehost)
+{
+ struct mdp_superblock_1 *sb = sbv;
+ int l = homehost ? strlen(homehost) : 0;
+
+ return (l > 0 && l < 32 &&
+ sb->set_name[l] == ':' &&
+ strncmp(sb->set_name, homehost, l) == 0);
+}
+
static void uuid_from_super1(int uuid[4], void * sbv)
{
struct mdp_superblock_1 *super = sbv;
info->array.md_minor = -1;
info->array.ctime = __le64_to_cpu(sb->ctime);
info->array.utime = __le64_to_cpu(sb->utime);
- info->array.chunk_size = __le32_to_cpu(sb->chunksize)/512;
+ info->array.chunk_size = __le32_to_cpu(sb->chunksize)*512;
info->data_offset = __le64_to_cpu(sb->data_offset);
info->component_size = __le64_to_cpu(sb->size);
info->new_level = __le32_to_cpu(sb->new_level);
info->delta_disks = __le32_to_cpu(sb->delta_disks);
info->new_layout = __le32_to_cpu(sb->new_layout);
- info->new_chunk = __le32_to_cpu(sb->new_chunk);
+ info->new_chunk = __le32_to_cpu(sb->new_chunk)<<9;
} else
info->reshape_active = 0;
info->array.working_disks = working;
}
-static int update_super1(struct mdinfo *info, void *sbv, char *update, char *devname, int verbose)
+static int update_super1(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.
+ */
int rv = 0;
struct mdp_superblock_1 *sb = sbv;
- 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
+ */
+ if (sb->events != __cpu_to_le64(info->events))
+ rv = 1;
sb->events = __cpu_to_le64(info->events);
+ }
+ if (strcmp(update, "force-array")==0) {
+ /* Degraded array and 'force' requests to
+ * maybe need to mark it 'clean'.
+ */
switch(__le32_to_cpu(sb->level)) {
case 5: case 4: case 6:
/* need to force clean */
+ if (sb->resync_offset != ~0ULL)
+ rv = 1;
sb->resync_offset = ~0ULL;
}
}
rv = 1;
}
}
-#if 0
- 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];
- }
-#endif
if (strcmp(update, "grow") == 0) {
sb->raid_disks = __cpu_to_le32(info->array.raid_disks);
/* FIXME */
}
if (strcmp(update, "resync") == 0) {
/* make sure resync happens */
- sb->resync_offset = ~0ULL;
+ sb->resync_offset = 0ULL;
}
- if (strcmp(update, "uuid") == 0)
+ if (strcmp(update, "uuid") == 0) {
memcpy(sb->set_uuid, info->uuid, 16);
+ if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) {
+ struct bitmap_super_s *bm;
+ bm = (struct bitmap_super_s*)(sbv+1024);
+ memcpy(bm->uuid, info->uuid, 16);
+ }
+ }
+ if (strcmp(update, "homehost") == 0 &&
+ homehost) {
+ char *c;
+ update = "name";
+ c = strchr(sb->set_name, ':');
+ if (c)
+ strncpy(info->name, c+1, 31 - (c-sb->set_name));
+ else
+ strncpy(info->name, sb->set_name, 32);
+ info->name[32] = 0;
+ }
+ if (strcmp(update, "name") == 0) {
+ if (info->name[0] == 0)
+ sprintf(info->name, "%d", info->array.md_minor);
+ memset(sb->set_name, 0, sizeof(sb->set_name));
+ if (homehost &&
+ strchr(info->name, ':') == NULL &&
+ strlen(homehost)+1+strlen(info->name) < 32) {
+ strcpy(sb->set_name, homehost);
+ strcat(sb->set_name, ":");
+ strcat(sb->set_name, info->name);
+ } else
+ strcpy(sb->set_name, info->name);
+ }
if (strcmp(update, "_reshape_progress")==0)
sb->reshape_position = __cpu_to_le64(info->reshape_progress);
return rv;
}
-
-static __u64 event_super1(void *sbv)
-{
- struct mdp_superblock_1 *sb = sbv;
- return __le64_to_cpu(sb->events);
-}
-
-static int init_super1(struct supertype *st, void **sbp, mdu_array_info_t *info, unsigned long long size, char *name)
+static int init_super1(struct supertype *st, void **sbp, mdu_array_info_t *info,
+ unsigned long long size, char *name, char *homehost)
{
struct mdp_superblock_1 *sb = malloc(1024 + sizeof(bitmap_super_t));
int spares;
int rfd;
+ char defname[10];
memset(sb, 0, 1024);
- if (info->major_version == -1)
+ if (info->major_version == -1) {
/* zeroing superblock */
+ *sbp = sb;
return 0;
+ }
spares = info->working_disks - info->active_disks;
if (info->raid_disks + spares > 384) {
return 0;
}
-
sb->magic = __cpu_to_le32(MD_SB_MAGIC);
sb->major_version = __cpu_to_le32(1);
sb->feature_map = 0;
}
if (rfd >= 0) close(rfd);
+ if (name == NULL || *name == 0) {
+ sprintf(defname, "%d", info->md_minor);
+ name = defname;
+ }
memset(sb->set_name, 0, 32);
- strcpy(sb->set_name, name);
+ if (homehost &&
+ strchr(name, ':')== NULL &&
+ strlen(homehost)+1+strlen(name) < 32) {
+ strcpy(sb->set_name, homehost);
+ strcat(sb->set_name, ":");
+ strcat(sb->set_name, name);
+ } else
+ strcpy(sb->set_name, name);
sb->ctime = __cpu_to_le64((unsigned long long)time(0));
sb->level = __cpu_to_le32(info->level);
*rp = 0xfffe;
}
+static void locate_bitmap1(struct supertype *st, int fd, void *sbv);
+
static int store_super1(struct supertype *st, int fd, void *sbv)
{
struct mdp_superblock_1 *sb = sbv;
if (write(fd, sb, sbsize) != sbsize)
return 4;
+ if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) {
+ struct bitmap_super_s *bm = (struct bitmap_super_s*)
+ (((char*)sb)+1024);
+ if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) {
+ locate_bitmap1(st, fd, sbv);
+ if (write(fd, bm, sizeof(*bm)) != sizeof(*bm))
+ return 5;
+ }
+ }
fsync(fd);
return 0;
}
sb->dev_number = __cpu_to_le32(dinfo->number);
if (dinfo->state & (1<<MD_DISK_WRITEMOSTLY))
- sb->devflags |= WriteMostly1;
+ sb->devflags |= __cpu_to_le32(WriteMostly1);
if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 ||
read(rfd, sb->device_uuid, 16) != 16) {
if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) {
/* same array, so preserve events and dev_number */
sb->events = refsb->events;
- sb->dev_number = refsb->dev_number;
+ /* bugs in 2.6.17 and earlier mean the dev_number
+ * chosen in Manage must be preserved
+ */
+ if (get_linux_version() >= 2006018)
+ sb->dev_number = refsb->dev_number;
}
free(refsb);
}
return 1;
if (!first) {
- first = malloc(1024);
- memcpy(first, second, 1024);
+ first = malloc(1024+sizeof(bitmap_super_t));
+ memcpy(first, second, 1024+sizeof(bitmap_super_t));
*firstp = first;
return 0;
}
unsigned long long dsize;
unsigned long long sb_offset;
struct mdp_superblock_1 *super;
-
+ int uuid[4];
+ struct bitmap_super_s *bsb;
if (st->ss == NULL) {
/*
* Calculate the position of the superblock.
* It is always aligned to a 4K boundary and
- * depeding on minor_version, it can be:
+ * depending on minor_version, it can be:
* 0: At least 8K, but less than 12K, from end of device
* 1: At start of device
* 2: 4K from start of device.
return 2;
}
*sbp = super;
+
+ /* Now check on the bitmap superblock */
+ if ((__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) == 0)
+ return 0;
+ /* Read the bitmap superblock and make sure it looks
+ * valid. If it doesn't clear the bit. An --assemble --force
+ * should get that written out.
+ */
+ locate_bitmap1(st, fd, super);
+ if (read(fd, ((char*)super)+1024, sizeof(struct bitmap_super_s))
+ != sizeof(struct bitmap_super_s))
+ goto no_bitmap;
+
+ uuid_from_super1(uuid, super);
+ bsb = (struct bitmap_super_s *)(((char*)super)+1024);
+ if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC ||
+ memcmp(bsb->uuid, uuid, 16) != 0)
+ goto no_bitmap;
+ return 0;
+
+ no_bitmap:
+ super->feature_map = __cpu_to_le32(__le32_to_cpu(super->feature_map) & ~1);
return 0;
}
*/
unsigned long long bits;
- unsigned long long max_bits = (3*512 - sizeof(bitmap_super_t)) * 8;
+ unsigned long long max_bits = (6*512 - sizeof(bitmap_super_t)) * 8;
unsigned long long min_chunk;
struct mdp_superblock_1 *sb = sbv;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + 1024);
}
-void locate_bitmap1(struct supertype *st, int fd, void *sbv)
+static void locate_bitmap1(struct supertype *st, int fd, void *sbv)
{
unsigned long long offset;
struct mdp_superblock_1 *sb;
lseek64(fd, offset<<9, 0);
}
-int write_bitmap1(struct supertype *st, int fd, void *sbv)
+static int write_bitmap1(struct supertype *st, int fd, void *sbv)
{
struct mdp_superblock_1 *sb = sbv;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+1024);
.detail_super = detail_super1,
.brief_detail_super = brief_detail_super1,
#endif
+ .match_home = match_home1,
.uuid_from_super = uuid_from_super1,
.getinfo_super = getinfo_super1,
.update_super = update_super1,
- .event_super = event_super1,
.init_super = init_super1,
.add_to_super = add_to_super1,
.store_super = store_super1,
projects / thirdparty / mdadm.git / blobdiff