/*
* 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
}
#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;
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));
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:
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.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.
/* make sure resync happens */
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[33] = 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 __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);
+ write(fd, bm, sizeof(*bm));
+ }
+ }
fsync(fd);
return 0;
}
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;
}
}
-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,
projects / thirdparty / mdadm.git / blobdiff