/*
* 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
* Australia
*/
+#define HAVE_STDINT_H 1
#include "mdadm.h"
-
+#include "sha1.h"
/*
* All handling for the 0.90.0 version superblock is in
* this file.
#ifndef MDASSEMBLE
-static void examine_super0(void *sbv)
+static void examine_super0(void *sbv, char *homehost)
{
mdp_super_t *sb = sbv;
time_t atime;
printf(" Magic : %08x\n", sb->md_magic);
printf(" Version : %02d.%02d.%02d\n", sb->major_version, sb->minor_version,
sb->patch_version);
- if (sb->minor_version >= 90)
- printf(" UUID : %08x:%08x:%08x:%08x\n", sb->set_uuid0, sb->set_uuid1,
+ if (sb->minor_version >= 90) {
+ printf(" UUID : %08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
sb->set_uuid2, sb->set_uuid3);
- else
+ if (homehost) {
+ 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);
+ }
+ printf("\n");
+ } else
printf(" UUID : %08x\n", sb->set_uuid0);
atime = sb->ctime;
case 0:
case 4:
case 5:
+ case 6:
+ case 10:
printf(" Chunk Size : %dK\n", sb->chunk_size/1024);
break;
case -1:
{
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,
printf("\n");
}
-static void detail_super0(void *sbv)
+static void detail_super0(void *sbv, char *homehost)
{
mdp_super_t *sb = sbv;
printf(" UUID : ");
sb->set_uuid2, sb->set_uuid3);
else
printf("%08x", sb->set_uuid0);
+ if (homehost) {
+ 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);
+ }
printf("\n Events : %d.%d\n\n", sb->events_hi, sb->events_lo);
}
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;
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;
} 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 ++;
}
-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.
} 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 */
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;
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];
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
+ * of random material.
+ * We use the first 8 bytes (64bits) of the sha1 of the
+ * host name
+ */
-static int init_super0(struct supertype *st, void **sbp, mdu_array_info_t *info, unsigned long long size, char *ignored_name)
+static int init_super0(struct supertype *st, void **sbp, mdu_array_info_t *info,
+ unsigned long long size, char *ignored_name, char *homehost)
{
mdp_super_t *sb = malloc(MD_SB_BYTES + sizeof(bitmap_super_t));
int spares;
if (info->major_version == -1) {
/* zeroing the superblock */
+ *sbp = sb;
return 0;
}
}
if (rfd >= 0)
close(rfd);
+ if (homehost) {
+ char buf[20];
+ char *hash = sha1_buffer(homehost,
+ strlen(homehost),
+ buf);
+ memcpy(&sb->set_uuid2, hash, 8);
+ }
sb->utime = sb->ctime;
sb->state = info->state;
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);
}
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);
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
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);
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;
}
.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,
projects / thirdparty / mdadm.git / blobdiff