/*
* 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.
* - initialising a new superblock
* - printing the superblock for --examine
* - printing part of the superblock for --detail
- * .. other stuff
+ * .. other stuff
*/
return newcsum;
}
-static void examine_super0(void *sbv)
+
+void super0_swap_endian(struct mdp_superblock_s *sb)
{
- mdp_super_t *sb = sbv;
+ /* as super0 superblocks are host-endian, it is sometimes
+ * useful to be able to swap the endianness
+ * as (almost) everything is u32's we byte-swap every 4byte
+ * number.
+ * We then also have to swap the events_hi and events_lo
+ */
+ char *sbc = (char *)sb;
+ __u32 t32;
+ int i;
+
+ for (i=0; i < MD_SB_BYTES ; i+=4) {
+ char t = sbc[i];
+ sbc[i] = sbc[i+3];
+ sbc[i+3] = t;
+ t=sbc[i+1];
+ sbc[i+1]=sbc[i+2];
+ sbc[i+2]=t;
+ }
+ t32 = sb->events_hi;
+ sb->events_hi = sb->events_lo;
+ sb->events_lo = t32;
+
+ t32 = sb->cp_events_hi;
+ sb->cp_events_hi = sb->cp_events_lo;
+ sb->cp_events_lo = t32;
+
+}
+
+#ifndef MDASSEMBLE
+
+static void examine_super0(struct supertype *st, char *homehost)
+{
+ mdp_super_t *sb = st->sb;
time_t atime;
int d;
char *c;
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);
+ if (sb->not_persistent)
+ printf(" Eedk : not persistent\n");
+
atime = sb->ctime;
printf(" Creation Time : %.24s\n", ctime(&atime));
c=map_num(pers, sb->level);
printf(" Raid Level : %s\n", c?c:"-unknown-");
- if ((int)sb->level >= 0)
- printf(" Device Size : %d%s\n", sb->size, human_size((long long)sb->size<<10));
+ if ((int)sb->level >= 0) {
+ int ddsks=0;
+ printf(" Used Dev Size : %d%s\n", sb->size,
+ human_size((long long)sb->size<<10));
+ switch(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);
+ }
+ if (ddsks)
+ printf(" Array Size : %llu%s\n", (unsigned long long)ddsks * sb->size,
+ human_size(ddsks*(long long)sb->size<<10));
+ }
printf(" Raid Devices : %d\n", sb->raid_disks);
printf(" Total Devices : %d\n", sb->nr_disks);
printf("Preferred Minor : %d\n", sb->md_minor);
printf("\n");
+ if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) {
+ printf(" Reshape pos'n : %llu%s\n", (unsigned long long)sb->reshape_position/2, human_size((long long)sb->reshape_position<<9));
+ if (sb->delta_disks) {
+ printf(" Delta Devices : %d", sb->delta_disks);
+ if (sb->delta_disks)
+ printf(" (%d->%d)\n", sb->raid_disks-sb->delta_disks, sb->raid_disks);
+ else
+ printf(" (%d->%d)\n", sb->raid_disks, sb->raid_disks+sb->delta_disks);
+ }
+ if (sb->new_level != sb->level) {
+ c = map_num(pers, sb->new_level);
+ printf(" New Level : %s\n", c?c:"-unknown-");
+ }
+ if (sb->new_layout != sb->layout) {
+ if (sb->level == 5) {
+ c = map_num(r5layout, sb->new_layout);
+ printf(" New Layout : %s\n", c?c:"-unknown-");
+ }
+ if (sb->level == 10) {
+ printf(" New Layout : near=%d, %s=%d\n",
+ sb->new_layout&255,
+ (sb->new_layout&0x10000)?"offset":"far",
+ (sb->new_layout>>8)&255);
+ }
+ }
+ if (sb->new_chunk != sb->chunk_size)
+ printf(" New Chunksize : %d\n", sb->new_chunk);
+ printf("\n");
+ }
atime = sb->utime;
printf(" Update Time : %.24s\n", ctime(&atime));
printf(" State : %s\n",
(sb->state&(1<<MD_SB_CLEAN))?"clean":"active");
+ if (sb->state & (1<<MD_SB_BITMAP_PRESENT))
+ printf("Internal Bitmap : present\n");
printf(" Active Devices : %d\n", sb->active_disks);
printf("Working Devices : %d\n", sb->working_disks);
printf(" Failed Devices : %d\n", sb->failed_disks);
printf(" Checksum : %x - correct\n", sb->sb_csum);
else
printf(" Checksum : %x - expected %lx\n", sb->sb_csum, calc_sb0_csum(sb));
- printf(" Events : %d.%d\n", sb->events_hi, sb->events_lo);
+ printf(" Events : %llu\n",
+ ((unsigned long long)sb->events_hi << 32)
+ + sb->events_lo);
printf("\n");
if (sb->level == 5) {
c = map_num(r5layout, sb->layout);
printf(" Layout : %s\n", c?c:"-unknown-");
}
+ if (sb->level == 10) {
+ printf(" Layout : near=%d, %s=%d\n",
+ sb->layout&255,
+ (sb->layout&0x10000)?"offset":"far",
+ (sb->layout>>8)&255);
+ }
switch(sb->level) {
case 0:
case 4:
case 5:
+ case 6:
+ case 10:
printf(" Chunk Size : %dK\n", sb->chunk_size/1024);
break;
case -1:
printf(" Rounding : %dK\n", sb->chunk_size/1024);
break;
- default: break;
+ default: break;
}
printf("\n");
printf(" Number Major Minor RaidDevice State\n");
mdp_disk_t *dp;
char *dv;
char nb[5];
+ int wonly;
if (d>=0) dp = &sb->disks[d];
else dp = &sb->this_disk;
- sprintf(nb, "%4d", d);
+ snprintf(nb, sizeof(nb), "%4d", d);
printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb,
dp->number, dp->major, dp->minor, dp->raid_disk);
+ wonly = dp->state & (1<<MD_DISK_WRITEMOSTLY);
+ dp->state &= ~(1<<MD_DISK_WRITEMOSTLY);
if (dp->state & (1<<MD_DISK_FAULTY)) printf(" faulty");
if (dp->state & (1<<MD_DISK_ACTIVE)) printf(" active");
if (dp->state & (1<<MD_DISK_SYNC)) printf(" sync");
if (dp->state & (1<<MD_DISK_REMOVED)) printf(" removed");
+ if (wonly) printf(" write-mostly");
if (dp->state == 0) printf(" spare");
- if ((dv=map_dev(dp->major, dp->minor)))
+ if ((dv=map_dev(dp->major, dp->minor, 0)))
printf(" %s", dv);
printf("\n");
if (d == -1) printf("\n");
}
}
-static void brief_examine_super0(void *sbv)
+static void brief_examine_super0(struct supertype *st)
{
- mdp_super_t *sb = sbv;
+ mdp_super_t *sb = st->sb;
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 export_examine_super0(struct supertype *st)
{
- mdp_super_t *sb = sbv;
+ mdp_super_t *sb = st->sb;
+
+ printf("MD_LEVEL=%s\n", map_num(pers, sb->level));
+ printf("MD_DEVICES=%d\n", sb->raid_disks);
+ if (sb->minor_version >= 90)
+ printf("MD_UUID=%08x:%08x:%08x:%08x\n",
+ sb->set_uuid0, sb->set_uuid1,
+ sb->set_uuid2, sb->set_uuid3);
+ else
+ printf("MD_UUID=%08x\n", sb->set_uuid0);
+ printf("MD_UPDATE_TIME=%llu\n",
+ __le64_to_cpu(sb->ctime) & 0xFFFFFFFFFFULL);
+ printf("MD_EVENTS=%llu\n",
+ ((unsigned long long)sb->events_hi << 32)
+ + sb->events_lo);
+}
+
+static void detail_super0(struct supertype *st, char *homehost)
+{
+ mdp_super_t *sb = st->sb;
printf(" UUID : ");
if (sb->minor_version >= 90)
printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
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);
}
-static void brief_detail_super0(void *sbv)
+static void brief_detail_super0(struct supertype *st)
{
- mdp_super_t *sb = sbv;
+ mdp_super_t *sb = st->sb;
printf(" UUID=");
if (sb->minor_version >= 90)
printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
printf("%08x", sb->set_uuid0);
}
-static void uuid_from_super0(int uuid[4], void * sbv)
+static void export_detail_super0(struct supertype *st)
+{
+ mdp_super_t *sb = st->sb;
+ printf("MD_UUID=");
+ if (sb->minor_version >= 90)
+ printf("%08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
+ sb->set_uuid2, sb->set_uuid3);
+ else
+ printf("%08x", sb->set_uuid0);
+ printf("\n");
+}
+#endif
+
+static int match_home0(struct supertype *st, char *homehost)
{
- mdp_super_t *super = sbv;
+ mdp_super_t *sb = st->sb;
+ char buf[20];
+ char *hash = sha1_buffer(homehost,
+ strlen(homehost),
+ buf);
+
+ return (memcmp(&sb->set_uuid2, hash, 8)==0);
+}
+
+static void uuid_from_super0(struct supertype *st, int uuid[4])
+{
+ mdp_super_t *super = st->sb;
uuid[0] = super->set_uuid0;
if (super->minor_version >= 90) {
uuid[1] = super->set_uuid1;
}
}
-static void getinfo_super0(struct mdinfo *info, void *sbv)
+static void getinfo_super0(struct supertype *st, struct mdinfo *info)
{
- mdp_super_t *sb = sbv;
+ mdp_super_t *sb = st->sb;
int working = 0;
int i;
info->array.patch_version = sb->patch_version;
info->array.raid_disks = sb->raid_disks;
info->array.level = sb->level;
+ info->array.layout = sb->layout;
info->array.md_minor = sb->md_minor;
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;
info->disk.major = sb->this_disk.major;
info->disk.minor = sb->this_disk.minor;
info->disk.raid_disk = sb->this_disk.raid_disk;
+ info->disk.number = sb->this_disk.number;
info->events = md_event(sb);
+ info->data_offset = 0;
+
+ sprintf(info->text_version, "0.%d", sb->minor_version);
- uuid_from_super0(info->uuid, sbv);
-
+ uuid_from_super0(st, info->uuid);
+
+ if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) {
+ info->reshape_active = 1;
+ info->reshape_progress = sb->reshape_position;
+ info->new_level = sb->new_level;
+ info->delta_disks = sb->delta_disks;
+ info->new_layout = sb->new_layout;
+ info->new_chunk = sb->new_chunk;
+ } else
+ info->reshape_active = 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 supertype *st, struct mdinfo *info,
+ 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;
- mdp_super_t *sb = sbv;
+ mdp_super_t *sb = st->sb;
if (strcmp(update, "sparc2.2")==0 ) {
/* 2.2 sparc put the events in the wrong place
* So we copy the tail of the superblock
memcpy(sb32+MD_SB_GENERIC_CONSTANT_WORDS+7,
sb32+MD_SB_GENERIC_CONSTANT_WORDS+7+1,
(MD_SB_WORDS - (MD_SB_GENERIC_CONSTANT_WORDS+7+1))*4);
- fprintf (stderr, Name ": adjusting superblock of %s for 2.2/sparc compatability.\n",
- devname);
+ if (verbose >= 0)
+ fprintf (stderr, Name ": adjusting superblock of %s for 2.2/sparc compatability.\n",
+ devname);
}
if (strcmp(update, "super-minor") ==0) {
sb->md_minor = info->array.md_minor;
- if (verbose)
+ if (verbose > 0)
fprintf(stderr, Name ": updating superblock of %s with minor number %d\n",
devname, info->array.md_minor);
}
if (strcmp(update, "summaries") == 0) {
int i;
/* set nr_disks, active_disks, working_disks,
- * failed_disks, spare_disks based on disks[]
+ * failed_disks, spare_disks based on disks[]
* array in superblock.
* Also make sure extra slots aren't 'failed'
*/
sb->nr_disks = sb->active_disks =
sb->working_disks = sb->failed_disks =
sb->spare_disks = 0;
- for (i=0; i < MD_SB_DISKS ; i++)
+ for (i=0; i < MD_SB_DISKS ; i++)
if (sb->disks[i].major ||
sb->disks[i].minor) {
int state = sb->disks[i].state;
} 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->level == 5 || sb->level == 4 || sb->level == 6)
+ 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 */
sb->state |= (1 << MD_SB_CLEAN);
+ rv = 1;
+ }
}
if (strcmp(update, "assemble")==0) {
int d = info->disk.number;
- if (sb->disks[d].state != info->disk.state) {
- sb->disks[d].state = info->disk.state;
+ int wonly = sb->disks[d].state & (1<<MD_DISK_WRITEMOSTLY);
+ if ((sb->disks[d].state & ~(1<<MD_DISK_WRITEMOSTLY))
+ != info->disk.state) {
+ sb->disks[d].state = info->disk.state | wonly;
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) {
+ if (strcmp(update, "linear-grow-new") == 0) {
+ memset(&sb->disks[info->disk.number], 0, sizeof(sb->disks[0]));
+ sb->disks[info->disk.number].number = info->disk.number;
+ sb->disks[info->disk.number].major = info->disk.major;
+ sb->disks[info->disk.number].minor = info->disk.minor;
+ sb->disks[info->disk.number].raid_disk = info->disk.raid_disk;
+ sb->disks[info->disk.number].state = info->disk.state;
+ sb->this_disk = sb->disks[info->disk.number];
+ }
+ if (strcmp(update, "linear-grow-update") == 0) {
sb->raid_disks = info->array.raid_disks;
sb->nr_disks = info->array.nr_disks;
sb->active_disks = info->array.active_disks;
sb->disks[info->disk.number].minor = info->disk.minor;
sb->disks[info->disk.number].raid_disk = info->disk.raid_disk;
sb->disks[info->disk.number].state = info->disk.state;
- if (sb->this_disk.number == info->disk.number)
- sb->this_disk = sb->disks[info->disk.number];
}
if (strcmp(update, "resync") == 0) {
/* make sure resync happens */
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];
+ sb->set_uuid3 = info->uuid[3];
+ if (sb->state & (1<<MD_SB_BITMAP_PRESENT)) {
+ struct bitmap_super_s *bm;
+ bm = (struct bitmap_super_s*)(sb+1);
+ uuid_from_super0(st, (int*)bm->uuid);
+ }
+ }
+ if (strcmp(update, "_reshape_progress")==0)
+ sb->reshape_position = info->reshape_progress;
sb->sb_csum = calc_sb0_csum(sb);
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(void **sbp, mdu_array_info_t *info)
+static int init_super0(struct supertype *st, mdu_array_info_t *info,
+ unsigned long long size, char *ignored_name, char *homehost,
+ int *uuid)
{
- mdp_super_t *sb = malloc(MD_SB_BYTES);
+ mdp_super_t *sb = malloc(MD_SB_BYTES + sizeof(bitmap_super_t));
int spares;
- memset(sb, 0, MD_SB_BYTES);
+ memset(sb, 0, MD_SB_BYTES + sizeof(bitmap_super_t));
+ st->sb = sb;
if (info->major_version == -1) {
/* zeroing the superblock */
return 0;
sb->minor_version = 90;
sb->patch_version = 0;
sb->gvalid_words = 0; /* ignored */
- sb->set_uuid0 = random();
sb->ctime = time(0);
sb->level = info->level;
+ if (size != info->size)
+ return 0;
sb->size = info->size;
sb->nr_disks = info->nr_disks;
sb->raid_disks = info->raid_disks;
sb->md_minor = info->md_minor;
sb->not_persistent = 0;
- sb->set_uuid1 = random();
- sb->set_uuid2 = random();
- sb->set_uuid3 = random();
+ if (uuid) {
+ sb->set_uuid0 = uuid[0];
+ sb->set_uuid1 = uuid[1];
+ sb->set_uuid2 = uuid[2];
+ sb->set_uuid3 = uuid[3];
+ } else {
+ int rfd = open("/dev/urandom", O_RDONLY);
+ if (rfd < 0 || read(rfd, &sb->set_uuid0, 4) != 4)
+ sb->set_uuid0 = random();
+ if (rfd < 0 || read(rfd, &sb->set_uuid1, 12) != 12) {
+ sb->set_uuid1 = random();
+ sb->set_uuid2 = random();
+ sb->set_uuid3 = random();
+ }
+ 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;
sb->active_disks = info->active_disks;
sb->working_disks = info->working_disks;
sb->failed_disks = info->failed_disks;
+ sb->spare_disks = info->spare_disks;
sb->events_hi = 0;
sb->events_lo = 1;
sb->layout = info->layout;
sb->chunk_size = info->chunk_size;
- *sbp = sb;
return 1;
}
+struct devinfo {
+ int fd;
+ char *devname;
+ mdu_disk_info_t disk;
+ struct devinfo *next;
+};
/* Add a device to the superblock being created */
-static void add_to_super0(void *sbv, mdu_disk_info_t *dinfo)
+static void add_to_super0(struct supertype *st, mdu_disk_info_t *dinfo,
+ int fd, char *devname)
{
- mdp_super_t *sb = sbv;
+ mdp_super_t *sb = st->sb;
mdp_disk_t *dk = &sb->disks[dinfo->number];
-
+ struct devinfo *di, **dip;
+
dk->number = dinfo->number;
dk->major = dinfo->major;
dk->minor = dinfo->minor;
dk->raid_disk = dinfo->raid_disk;
dk->state = dinfo->state;
+
+ sb->this_disk = sb->disks[dinfo->number];
+ sb->sb_csum = calc_sb0_csum(sb);
+
+ dip = (struct devinfo **)&st->info;
+ while (*dip)
+ dip = &(*dip)->next;
+ di = malloc(sizeof(struct devinfo));
+ di->fd = fd;
+ di->devname = devname;
+ di->disk = *dinfo;
+ di->next = NULL;
+ *dip = di;
}
-static int store_super0(int fd, void *sbv)
+static int store_super0(struct supertype *st, int fd)
{
- unsigned long size;
unsigned long long dsize;
unsigned long long offset;
- mdp_super_t *super = sbv;
-
-#ifdef BLKGETSIZE64
- if (ioctl(fd, BLKGETSIZE64, &dsize) != 0)
-#endif
- {
- if (ioctl(fd, BLKGETSIZE, &size))
- return 1;
- else
- dsize = ((unsigned long long)size)<<9;
- }
+ mdp_super_t *super = st->sb;
+
+ if (!get_dev_size(fd, NULL, &dsize))
+ return 1;
- if (dsize < MD_RESERVED_SECTORS*2)
+ if (dsize < MD_RESERVED_SECTORS*512)
return 2;
-
+
offset = MD_NEW_SIZE_SECTORS(dsize>>9);
offset *= 512;
if (write(fd, super, sizeof(*super)) != sizeof(*super))
return 4;
+ 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)
+ if (write(fd, bm, sizeof(*bm)) != sizeof(*bm))
+ return 5;
+ }
+
+ fsync(fd);
return 0;
}
-static int write_init_super0(struct supertype *st, void *sbv, mdu_disk_info_t *dinfo, char *devname)
+#ifndef MDASSEMBLE
+static int write_init_super0(struct supertype *st)
{
- mdp_super_t *sb = sbv;
- int fd = open(devname, O_RDWR, O_EXCL);
- int rv;
+ mdp_super_t *sb = st->sb;
+ int rv = 0;
+ struct devinfo *di;
- if (fd < 0) {
- fprintf(stderr, Name ": Failed to open %s to write superblock\n", devname);
- return -1;
- }
+ for (di = st->info ; di && ! rv ; di = di->next) {
- sb->this_disk = sb->disks[dinfo->number];
- sb->sb_csum = calc_sb0_csum(sb);
- rv = store_super0(fd, sb);
- close(fd);
- if (rv)
- fprintf(stderr, Name ": failed to write superblock to %s\n", devname);
+ if (di->disk.state == 1)
+ continue;
+ if (di->fd == -1)
+ continue;
+ Kill(di->devname, 0, 1, 1);
+ Kill(di->devname, 0, 1, 1);
+
+ sb->disks[di->disk.number].state &= ~(1<<MD_DISK_FAULTY);
+
+ sb->this_disk = sb->disks[di->disk.number];
+ sb->sb_csum = calc_sb0_csum(sb);
+ rv = store_super0(st, di->fd);
+
+ if (rv == 0 && (sb->state & (1<<MD_SB_BITMAP_PRESENT)))
+ rv = st->ss->write_bitmap(st, di->fd);
+
+ if (rv)
+ fprintf(stderr,
+ Name ": failed to write superblock to %s\n",
+ di->devname);
+ close(di->fd);
+ di->fd = -1;
+ }
return rv;
}
+#endif
-static int compare_super0(void **firstp, void *secondv)
+static int compare_super0(struct supertype *st, struct supertype *tst)
{
/*
* return:
* 2 wrong uuid
* 3 wrong other info
*/
- mdp_super_t *first = *firstp;
- mdp_super_t *second = secondv;
-
+ mdp_super_t *first = st->sb;
+ mdp_super_t *second = tst->sb;
int uuid1[4], uuid2[4];
+
if (second->md_magic != MD_SB_MAGIC)
return 1;
if (!first) {
- first = malloc(MD_SB_BYTES);
- memcpy(first, second, MD_SB_BYTES);
- *firstp = first;
+ first = malloc(MD_SB_BYTES + sizeof(struct bitmap_super_s));
+ memcpy(first, second, MD_SB_BYTES + sizeof(struct bitmap_super_s));
+ st->sb = first;
return 0;
}
- uuid_from_super0(uuid1, first);
- uuid_from_super0(uuid2, second);
- if (!same_uuid(uuid1, uuid2))
+ uuid_from_super0(st, uuid1);
+ uuid_from_super0(tst, uuid2);
+ if (!same_uuid(uuid1, uuid2, 0))
return 2;
if (first->major_version != second->major_version ||
first->minor_version != second->minor_version ||
}
-static int load_super0(struct supertype *st, int fd, void **sbp, char *devname)
+static void free_super0(struct supertype *st);
+
+static int load_super0(struct supertype *st, int fd, char *devname)
{
/* try to read in the superblock
* Return:
* 1 on cannot get superblock
* 2 on superblock meaningless
*/
- unsigned long size;
unsigned long long dsize;
unsigned long long offset;
mdp_super_t *super;
-
-#ifdef BLKGETSIZE64
- if (ioctl(fd, BLKGETSIZE64, &dsize) != 0)
-#endif
- {
- if (ioctl(fd, BLKGETSIZE, &size)) {
- if (devname)
- fprintf(stderr, Name ": cannot find device size for %s: %s\n",
- devname, strerror(errno));
- return 1;
- } else
- dsize = size << 9;
- }
+ int uuid[4];
+ struct bitmap_super_s *bsb;
+
+ free_super0(st);
+
+ if (st->subarray[0])
+ return 1;
+
+ if (!get_dev_size(fd, devname, &dsize))
+ return 1;
- if (dsize < MD_RESERVED_SECTORS*2) {
+ if (dsize < MD_RESERVED_SECTORS*512) {
if (devname)
- fprintf(stderr, Name ": %s is too small for md: size is %ld sectors.\n",
- devname, size);
+ fprintf(stderr, Name
+ ": %s is too small for md: size is %llu sectors.\n",
+ devname, dsize);
return 1;
}
-
+
offset = MD_NEW_SIZE_SECTORS(dsize>>9);
offset *= 512;
return 1;
}
- super = malloc(MD_SB_BYTES);
+ super = malloc(MD_SB_BYTES + sizeof(bitmap_super_t));
if (read(fd, super, sizeof(*super)) != MD_SB_BYTES) {
if (devname)
return 1;
}
+ if (st->ss && st->minor_version == 9)
+ super0_swap_endian(super);
+
if (super->md_magic != MD_SB_MAGIC) {
if (devname)
fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n",
free(super);
return 2;
}
- *sbp = super;
+ st->sb = super;
+
if (st->ss == NULL) {
st->ss = &super0;
- st->minor_version = 90;
+ st->minor_version = super->minor_version;
+ st->max_devs = MD_SB_DISKS;
+ st->info = NULL;
}
+ /* Now check on the bitmap superblock */
+ if ((super->state & (1<<MD_SB_BITMAP_PRESENT)) == 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.
+ */
+ if (read(fd, super+1, sizeof(struct bitmap_super_s))
+ != sizeof(struct bitmap_super_s))
+ goto no_bitmap;
+
+ uuid_from_super0(st, uuid);
+ bsb = (struct bitmap_super_s *)(super+1);
+ if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC ||
+ memcmp(bsb->uuid, uuid, 16) != 0)
+ goto no_bitmap;
+ return 0;
+
+ no_bitmap:
+ super->state &= ~(1<<MD_SB_BITMAP_PRESENT);
+
return 0;
}
struct supertype *st = malloc(sizeof(*st));
if (!st) return st;
+ memset(st, 0, sizeof(*st));
st->ss = &super0;
+ st->info = NULL;
st->minor_version = 90;
+ st->max_devs = MD_SB_DISKS;
+ st->sb = NULL;
if (strcmp(arg, "0") == 0 ||
strcmp(arg, "0.90") == 0 ||
- strcmp(arg, "default") == 0
+ strcmp(arg, "default") == 0 ||
+ strcmp(arg, "") == 0 /* no metadata */
)
return st;
+ st->minor_version = 91; /* reshape in progress */
+ if (strcmp(arg, "0.91") == 0) /* For dup_super support */
+ return st;
+
+ st->minor_version = 9; /* flag for 'byte-swapped' */
+ if (strcmp(arg, "0.swap")==0 ||
+ strcmp(arg, "0.9") == 0) /* For dup_super support */
+ return st;
+
free(st);
return NULL;
}
-static __u64 avail_size0(__u64 devsize)
+static __u64 avail_size0(struct supertype *st, __u64 devsize)
{
- if (devsize < MD_RESERVED_SECTORS*2)
+ if (devsize < MD_RESERVED_SECTORS)
return 0ULL;
return MD_NEW_SIZE_SECTORS(devsize);
}
+static int add_internal_bitmap0(struct supertype *st, 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
+ * at most. The default size is between 30K and 60K
+ *
+ * size is in sectors, chunk is in bytes !!!
+ */
+ unsigned long long bits;
+ unsigned long long max_bits = 60*1024*8;
+ unsigned long long min_chunk;
+ int chunk = *chunkp;
+ mdp_super_t *sb = st->sb;
+ bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES);
+
+
+ min_chunk = 4096; /* sub-page chunks don't work yet.. */
+ bits = (size * 512) / min_chunk + 1;
+ while (bits > max_bits) {
+ min_chunk *= 2;
+ bits = (bits+1)/2;
+ }
+ if (chunk == UnSet)
+ chunk = min_chunk;
+ else if (chunk < min_chunk)
+ return 0; /* chunk size too small */
+
+ sb->state |= (1<<MD_SB_BITMAP_PRESENT);
+
+ memset(bms, 0, sizeof(*bms));
+ bms->magic = __cpu_to_le32(BITMAP_MAGIC);
+ bms->version = __cpu_to_le32(major);
+ uuid_from_super0(st, (int*)bms->uuid);
+ bms->chunksize = __cpu_to_le32(chunk);
+ 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;
+}
+
+
+void locate_bitmap0(struct supertype *st, int fd)
+{
+ unsigned long long dsize;
+ unsigned long long offset;
+
+ if (!get_dev_size(fd, NULL, &dsize))
+ return;
+
+ if (dsize < MD_RESERVED_SECTORS*512)
+ return;
+
+ offset = MD_NEW_SIZE_SECTORS(dsize>>9);
+
+ offset *= 512;
+
+ offset += MD_SB_BYTES;
+
+ lseek64(fd, offset, 0);
+}
+
+int write_bitmap0(struct supertype *st, int fd)
+{
+ unsigned long long dsize;
+ unsigned long long offset;
+ mdp_super_t *sb = st->sb;
+
+ int rv = 0;
+
+ int towrite, n;
+ char buf[4096];
+
+ if (!get_dev_size(fd, NULL, &dsize))
+ return 1;
+
+
+ if (dsize < MD_RESERVED_SECTORS*512)
+ return -1;
+
+ offset = MD_NEW_SIZE_SECTORS(dsize>>9);
+
+ offset *= 512;
+
+ if (lseek64(fd, offset + 4096, 0)< 0LL)
+ return 3;
+
+
+ if (write(fd, ((char*)sb)+MD_SB_BYTES, sizeof(bitmap_super_t)) !=
+ sizeof(bitmap_super_t))
+ return -2;
+ towrite = 64*1024 - MD_SB_BYTES - sizeof(bitmap_super_t);
+ memset(buf, 0xff, sizeof(buf));
+ while (towrite > 0) {
+ n = towrite;
+ if (n > sizeof(buf))
+ n = sizeof(buf);
+ n = write(fd, buf, n);
+ if (n > 0)
+ towrite -= n;
+ else
+ break;
+ }
+ fsync(fd);
+ if (towrite)
+ rv = -2;
+
+ return rv;
+}
+
+static void free_super0(struct supertype *st)
+{
+ if (st->sb)
+ free(st->sb);
+ st->sb = NULL;
+}
+
+static int validate_geometry0(struct supertype *st, int level,
+ int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *subdev, unsigned long long *freesize)
+{
+ unsigned long long ldsize;
+ int fd;
+
+ if (level == LEVEL_CONTAINER)
+ return 0;
+ if (raiddisks > MD_SB_DISKS)
+ return 0;
+ if (size > (0x7fffffffULL<<10))
+ return 0;
+ if (!subdev)
+ return 1;
+
+ fd = open(subdev, O_RDONLY|O_EXCL, 0);
+ if (fd < 0) {
+ fprintf(stderr, Name ": Cannot open %s: %s\n",
+ subdev, strerror(errno));
+ return 0;
+ }
+ if (!get_dev_size(fd, subdev, &ldsize)) {
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ if (ldsize < MD_RESERVED_SECTORS * 512)
+ return 0;
+ if (size > (0x7fffffffULL<<10))
+ return 0;
+ *freesize = MD_NEW_SIZE_SECTORS(ldsize >> 9);
+ return 1;
+}
+
struct superswitch super0 = {
+#ifndef MDASSEMBLE
.examine_super = examine_super0,
.brief_examine_super = brief_examine_super0,
+ .export_examine_super = export_examine_super0,
.detail_super = detail_super0,
.brief_detail_super = brief_detail_super0,
+ .export_detail_super = export_detail_super0,
+ .write_init_super = write_init_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,
- .write_init_super = write_init_super0,
.compare_super = compare_super0,
.load_super = load_super0,
.match_metadata_desc = match_metadata_desc0,
.avail_size = avail_size0,
- .major = 0,
+ .add_internal_bitmap = add_internal_bitmap0,
+ .locate_bitmap = locate_bitmap0,
+ .write_bitmap = write_bitmap0,
+ .free_super = free_super0,
+ .validate_geometry = validate_geometry0,
};
projects / thirdparty / mdadm.git / blobdiff