#define HAVE_STDINT_H 1
#include "mdadm.h"
+#include "mdmon.h"
#include "sha1.h"
#include <values.h>
-static inline int ROUND_UP(int a, int base)
-{
- return ((a+base-1)/base)*base;
-}
-
/* a non-official T10 name for creation GUIDs */
static char T10[] = "Linux-MD";
#define DDF_CONCAT 0x1f
#define DDF_RAID5E 0x15
#define DDF_RAID5EE 0x25
-#define DDF_RAID6 0x16 /* Vendor unique layout */
+#define DDF_RAID6 0x06
/* Raid Level Qualifier (RLQ) */
#define DDF_RAID0_SIMPLE 0x00
#define DDF_RAID4_N 0x01 /* parity in last extent */
/* these apply to raid5e and raid5ee as well */
#define DDF_RAID5_0_RESTART 0x00 /* same as 'right asymmetric' - layout 1 */
+#define DDF_RAID6_0_RESTART 0x01 /* raid6 different from raid5 here!!! */
#define DDF_RAID5_N_RESTART 0x02 /* same as 'left asymmetric' - layout 0 */
#define DDF_RAID5_N_CONTINUE 0x03 /* same as 'left symmetric' - layout 2 */
#define DDF_BBM_LOG_MAGIC __cpu_to_be32(0xABADB10C)
#define DDF_GUID_LEN 24
-#define DDF_REVISION "01.00.00"
+#define DDF_REVISION_0 "01.00.00"
+#define DDF_REVISION_2 "01.02.00"
struct ddf_header {
- __u32 magic;
+ __u32 magic; /* DDF_HEADER_MAGIC */
__u32 crc;
char guid[DDF_GUID_LEN];
- char revision[8]; /* 01.00.00 */
+ char revision[8]; /* 01.02.00 */
__u32 seq; /* starts at '1' */
__u32 timestamp;
__u8 openflag;
/* The content of the 'controller section' - global scope */
struct ddf_controller_data {
- __u32 magic;
+ __u32 magic; /* DDF_CONTROLLER_MAGIC */
__u32 crc;
char guid[DDF_GUID_LEN];
struct controller_type {
/* The content of phys_section - global scope */
struct phys_disk {
- __u32 magic;
+ __u32 magic; /* DDF_PHYS_RECORDS_MAGIC */
__u32 crc;
__u16 used_pdes;
__u16 max_pdes;
/* phys_disk_entry.type is a bitmap - bigendian remember */
#define DDF_Forced_PD_GUID 1
#define DDF_Active_in_VD 2
-#define DDF_Global_Spare 4
+#define DDF_Global_Spare 4 /* VD_CONF records are ignored */
#define DDF_Spare 8 /* overrides Global_spare */
#define DDF_Foreign 16
#define DDF_Legacy 32 /* no DDF on this device */
/* The content of the virt_section global scope */
struct virtual_disk {
- __u32 magic;
+ __u32 magic; /* DDF_VIRT_RECORDS_MAGIC */
__u32 crc;
__u16 populated_vdes;
__u16 max_vdes;
#define DDF_state_deleted 0x2
#define DDF_state_missing 0x3
#define DDF_state_failed 0x4
+#define DDF_state_part_optimal 0x5
#define DDF_state_morphing 0x8
#define DDF_state_inconsistent 0x10
/* virtual_entry.init_state is a bigendian bitmap */
#define DDF_initstate_mask 0x03
#define DDF_init_not 0x00
-#define DDF_init_quick 0x01
+#define DDF_init_quick 0x01 /* initialisation is progress.
+ * i.e. 'state_inconsistent' */
#define DDF_init_full 0x02
#define DDF_access_mask 0xc0
*/
struct vd_config {
- __u32 magic;
+ __u32 magic; /* DDF_VD_CONF_MAGIC */
__u32 crc;
char guid[DDF_GUID_LEN];
__u32 timestamp;
#define DDF_cache_rallowed 64 /* enable read caching */
struct spare_assign {
- __u32 magic;
+ __u32 magic; /* DDF_SPARE_ASSIGN_MAGIC */
__u32 crc;
__u32 timestamp;
__u8 reserved[7];
/* The data_section contents - local scope */
struct disk_data {
- __u32 magic;
+ __u32 magic; /* DDF_PHYS_DATA_MAGIC */
__u32 crc;
char guid[DDF_GUID_LEN];
__u32 refnum; /* crc of some magic drive data ... */
* built in Create or Assemble to describe the whole array.
*/
struct ddf_super {
- struct ddf_header anchor, primary, secondary, *active;
+ struct ddf_header anchor, primary, secondary;
struct ddf_controller_data controller;
+ struct ddf_header *active;
struct phys_disk *phys;
struct virtual_disk *virt;
int pdsize, vdsize;
- int max_part;
+ int max_part, mppe, conf_rec_len;
+ int currentdev;
+ int updates_pending;
struct vcl {
- struct vcl *next;
- __u64 *lba_offset; /* location in 'conf' of
- * the lba table */
+ union {
+ char space[512];
+ struct {
+ struct vcl *next;
+ __u64 *lba_offset; /* location in 'conf' of
+ * the lba table */
+ int vcnum; /* index into ->virt */
+ __u64 *block_sizes; /* NULL if all the same */
+ };
+ };
struct vd_config conf;
- } *conflist, *newconf;
+ } *conflist, *currentconf;
struct dl {
- struct dl *next;
+ union {
+ char space[512];
+ struct {
+ struct dl *next;
+ int major, minor;
+ char *devname;
+ int fd;
+ unsigned long long size; /* sectors */
+ int pdnum; /* index in ->phys */
+ struct spare_assign *spare;
+ };
+ };
struct disk_data disk;
- int major, minor;
- char *devname;
- int fd;
- struct vcl *vlist[0]; /* max_part+1 in size */
- } *dlist;
+ void *mdupdate; /* hold metadata update */
+ struct vcl *vlist[0]; /* max_part in size */
+ } *dlist, *add_list;
};
#ifndef offsetof
#define offsetof(t,f) ((size_t)&(((t*)0)->f))
#endif
-extern struct superswitch super_ddf_container, super_ddf_bvd;
static int calc_crc(void *buf, int len)
{
/* All pre-allocated sections are a single block */
if (len != 1)
return NULL;
- } else
- buf = malloc(len<<9);
+ } else {
+ posix_memalign(&buf, 512, len<<9);
+ }
+
if (!buf)
return NULL;
devname);
return 2;
}
- if (memcmp(super->anchor.revision, DDF_REVISION, 8) != 0) {
+ if (memcmp(super->anchor.revision, DDF_REVISION_0, 8) != 0 &&
+ memcmp(super->anchor.revision, DDF_REVISION_2, 8) != 0) {
if (devname)
fprintf(stderr, Name ": can only support super revision"
- " %.8s, not %.8s on %s\n",
- DDF_REVISION, super->anchor.revision, devname);
+ " %.8s and earlier, not %.8s on %s\n",
+ DDF_REVISION_2, super->anchor.revision,devname);
return 2;
}
if (load_ddf_header(fd, __be64_to_cpu(super->anchor.primary_lba),
!super->virt) {
free(super->phys);
free(super->virt);
+ super->phys = NULL;
+ super->virt = NULL;
return 2;
}
super->conflist = NULL;
super->dlist = NULL;
+
+ super->max_part = __be16_to_cpu(super->active->max_partitions);
+ super->mppe = __be16_to_cpu(super->active->max_primary_element_entries);
+ super->conf_rec_len = __be16_to_cpu(super->active->config_record_len);
return 0;
}
struct stat stb;
char *conf;
int i;
- int conflen;
- int mppe;
+ int vnum;
+ int max_virt_disks = __be16_to_cpu(super->active->max_vd_entries);
+ unsigned long long dsize;
/* First the local disk info */
- super->max_part = __be16_to_cpu(super->active->max_partitions);
- dl = malloc(sizeof(*dl) +
- (super->max_part+1) * sizeof(dl->vlist[0]));
+ posix_memalign((void**)&dl, 512,
+ sizeof(*dl) +
+ (super->max_part) * sizeof(dl->vlist[0]));
load_section(fd, super, &dl->disk,
super->active->data_section_offset,
dl->minor = minor(stb.st_rdev);
dl->next = super->dlist;
dl->fd = keep ? fd : -1;
- for (i=0 ; i < super->max_part + 1 ; i++)
+
+ dl->size = 0;
+ if (get_dev_size(fd, devname, &dsize))
+ dl->size = dsize >> 9;
+ dl->spare = NULL;
+ for (i=0 ; i < super->max_part ; i++)
dl->vlist[i] = NULL;
super->dlist = dl;
+ dl->pdnum = -1;
+ for (i=0; i < __be16_to_cpu(super->active->max_pd_entries); i++)
+ if (memcmp(super->phys->entries[i].guid,
+ dl->disk.guid, DDF_GUID_LEN) == 0)
+ dl->pdnum = i;
/* Now the config list. */
/* 'conf' is an array of config entries, some of which are
* probably invalid. Those which are good need to be copied into
* the conflist
*/
- conflen = __be16_to_cpu(super->active->config_record_len);
conf = load_section(fd, super, NULL,
super->active->config_section_offset,
super->active->config_section_length,
0);
+ vnum = 0;
for (i = 0;
i < __be32_to_cpu(super->active->config_section_length);
- i += conflen) {
+ i += super->conf_rec_len) {
struct vd_config *vd =
(struct vd_config *)((char*)conf + i*512);
struct vcl *vcl;
+ if (vd->magic == DDF_SPARE_ASSIGN_MAGIC) {
+ if (dl->spare)
+ continue;
+ posix_memalign((void**)&dl->spare, 512,
+ super->conf_rec_len*512);
+ memcpy(dl->spare, vd, super->conf_rec_len*512);
+ continue;
+ }
if (vd->magic != DDF_VD_CONF_MAGIC)
continue;
for (vcl = super->conflist; vcl; vcl = vcl->next) {
}
if (vcl) {
- dl->vlist[i/conflen] = vcl;
+ dl->vlist[vnum++] = vcl;
if (__be32_to_cpu(vd->seqnum) <=
__be32_to_cpu(vcl->conf.seqnum))
continue;
- } else {
- vcl = malloc(conflen*512 + offsetof(struct vcl, conf));
+ } else {
+ posix_memalign((void**)&vcl, 512,
+ (super->conf_rec_len*512 +
+ offsetof(struct vcl, conf)));
vcl->next = super->conflist;
+ vcl->block_sizes = NULL; /* FIXME not for CONCAT */
super->conflist = vcl;
+ dl->vlist[vnum++] = vcl;
}
- memcpy(&vcl->conf, vd, conflen*512);
- mppe = __be16_to_cpu(super->anchor.max_primary_element_entries);
+ memcpy(&vcl->conf, vd, super->conf_rec_len*512);
vcl->lba_offset = (__u64*)
- &vcl->conf.phys_refnum[mppe];
- dl->vlist[i/conflen] = vcl;
+ &vcl->conf.phys_refnum[super->mppe];
+
+ for (i=0; i < max_virt_disks ; i++)
+ if (memcmp(super->virt->entries[i].guid,
+ vcl->conf.guid, DDF_GUID_LEN)==0)
+ break;
+ if (i < max_virt_disks)
+ vcl->vcnum = i;
}
free(conf);
int rv;
#ifndef MDASSEMBLE
- if (load_super_ddf_all(st, fd, &st->sb, devname, 0) == 0)
+ /* if 'fd' is a container, load metadata from all the devices */
+ if (load_super_ddf_all(st, fd, &st->sb, devname, 1) == 0)
return 0;
#endif
+ if (st->subarray[0])
+ return 1; /* FIXME Is this correct */
if (get_dev_size(fd, devname, &dsize) == 0)
return 1;
}
}
- super = malloc(sizeof(*super));
- if (!super) {
+ if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) {
fprintf(stderr, Name ": malloc of %zu failed.\n",
sizeof(*super));
return 1;
}
+ memset(super, 0, sizeof(*super));
rv = load_ddf_headers(fd, super, devname);
if (rv) {
st->minor_version = 0;
st->max_devs = 512;
}
+ st->loaded_container = 0;
return 0;
}
while (ddf->conflist) {
struct vcl *v = ddf->conflist;
ddf->conflist = v->next;
+ if (v->block_sizes)
+ free(v->block_sizes);
free(v);
}
while (ddf->dlist) {
ddf->dlist = d->next;
if (d->fd >= 0)
close(d->fd);
+ if (d->spare)
+ free(d->spare);
free(d);
}
free(ddf);
return NULL;
st = malloc(sizeof(*st));
+ memset(st, 0, sizeof(*st));
st->ss = &super_ddf;
st->max_devs = 512;
st->minor_version = 0;
return st;
}
-static struct supertype *match_metadata_desc_ddf_bvd(char *arg)
-{
- struct supertype *st;
- if (strcmp(arg, "ddf/bvd") != 0 &&
- strcmp(arg, "bvd") != 0 &&
- strcmp(arg, "default") != 0
- )
- return NULL;
-
- st = malloc(sizeof(*st));
- st->ss = &super_ddf_bvd;
- st->max_devs = 512;
- st->minor_version = 0;
- st->sb = NULL;
- return st;
-}
-static struct supertype *match_metadata_desc_ddf_svd(char *arg)
-{
- struct supertype *st;
- if (strcmp(arg, "ddf/svd") != 0 &&
- strcmp(arg, "svd") != 0 &&
- strcmp(arg, "default") != 0
- )
- return NULL;
-
- st = malloc(sizeof(*st));
- st->ss = &super_ddf_svd;
- st->max_devs = 512;
- st->minor_version = 0;
- st->sb = NULL;
- return st;
-}
#ifndef MDASSEMBLE
{ DDF_RAID0, 0 },
{ DDF_RAID1, 1 },
{ DDF_RAID3, LEVEL_UNSUPPORTED },
- { DDF_RAID5, 4 },
+ { DDF_RAID4, 4 },
+ { DDF_RAID5, 5 },
{ DDF_RAID1E, LEVEL_UNSUPPORTED },
{ DDF_JBOD, LEVEL_UNSUPPORTED },
{ DDF_CONCAT, LEVEL_LINEAR },
{
/* A GUIDs are part (or all) ASCII and part binary.
* They tend to be space padded.
- * We ignore trailing spaces and print numbers
- * <0x20 and >=0x7f as \xXX
- * Some GUIDs have a time stamp in bytes 16-19.
- * We print that if appropriate
+ * We print the GUID in HEX, then in parentheses add
+ * any initial ASCII sequence, and a possible
+ * time stamp from bytes 16-19
*/
int l = DDF_GUID_LEN;
int i;
+
+ for (i=0 ; i<DDF_GUID_LEN ; i++) {
+ if ((i&3)==0 && i != 0) printf(":");
+ printf("%02X", guid[i]&255);
+ }
+
+ printf(" (");
while (l && guid[l-1] == ' ')
l--;
for (i=0 ; i<l ; i++) {
if (guid[i] >= 0x20 && guid[i] < 0x7f)
fputc(guid[i], stdout);
else
- fprintf(stdout, "\\x%02x", guid[i]&255);
+ break;
}
if (tstamp) {
time_t then = __be32_to_cpu(*(__u32*)(guid+16)) + DECADE;
char tbuf[100];
struct tm *tm;
tm = localtime(&then);
- strftime(tbuf, 100, " (%D %T)",tm);
+ strftime(tbuf, 100, " %D %T",tm);
fputs(tbuf, stdout);
}
+ printf(")");
}
static void examine_vd(int n, struct ddf_super *sb, char *guid)
{
- int crl = __be16_to_cpu(sb->anchor.config_record_len);
+ int crl = sb->conf_rec_len;
struct vcl *vcl;
for (vcl = sb->conflist ; vcl ; vcl = vcl->next) {
examine_pds(sb);
}
+static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info);
+
+
static void brief_examine_super_ddf(struct supertype *st)
{
/* We just write a generic DDF ARRAY entry
- * The uuid is all hex, 6 groups of 4 bytes
*/
- struct ddf_super *ddf = st->sb;
- int i;
- printf("ARRAY /dev/ddf UUID=");
- for (i = 0; i < DDF_GUID_LEN; i++) {
- printf("%02x", ddf->anchor.guid[i]);
- if ((i&3) == 0 && i != 0)
- printf(":");
- }
- printf("\n");
+ struct mdinfo info;
+ char nbuf[64];
+ getinfo_super_ddf(st, &info);
+ fname_from_uuid(st, &info, nbuf, ':');
+ printf("ARRAY /dev/ddf metadata=ddf UUID=%s\n", nbuf + 5);
}
static void detail_super_ddf(struct supertype *st, char *homehost)
* Can that be stored in ddf_super??
*/
// struct ddf_super *ddf = st->sb;
+ struct mdinfo info;
+ char nbuf[64];
+ getinfo_super_ddf(st, &info);
+ fname_from_uuid(st, &info, nbuf,':');
+ printf(" UUID=%s", nbuf + 5);
}
-
-
#endif
static int match_home_ddf(struct supertype *st, char *homehost)
ddf->controller.vendor_data[len] == 0);
}
-static struct vd_config *find_vdcr(struct ddf_super *ddf)
+#ifndef MDASSEMBLE
+static struct vd_config *find_vdcr(struct ddf_super *ddf, int inst)
+{
+ struct vcl *v;
+
+ for (v = ddf->conflist; v; v = v->next)
+ if (inst == v->vcnum)
+ return &v->conf;
+ return NULL;
+}
+#endif
+
+static int find_phys(struct ddf_super *ddf, __u32 phys_refnum)
{
- /* FIXME this just picks off the first one */
- return &ddf->conflist->conf;
+ /* Find the entry in phys_disk which has the given refnum
+ * and return it's index
+ */
+ int i;
+ for (i=0; i < __be16_to_cpu(ddf->phys->max_pdes); i++)
+ if (ddf->phys->entries[i].refnum == phys_refnum)
+ return i;
+ return -1;
}
static void uuid_from_super_ddf(struct supertype *st, int uuid[4])
* uuid to put into bitmap file (Create, Grow)
* uuid for backup header when saving critical section (Grow)
* comparing uuids when re-adding a device into an array
+ * In these cases the uuid required is that of the data-array,
+ * not the device-set.
+ * uuid to recognise same set when adding a missing device back
+ * to an array. This is a uuid for the device-set.
+ *
* For each of these we can make do with a truncated
* or hashed uuid rather than the original, as long as
* everyone agrees.
- * In each case the uuid required is that of the data-array,
- * not the device-set.
* In the case of SVD we assume the BVD is of interest,
* though that might be the case if a bitmap were made for
* a mirrored SVD - worry about that later.
* The first 16 bytes of the sha1 of these is used.
*/
struct ddf_super *ddf = st->sb;
- struct vd_config *vd = find_vdcr(ddf);
-
- if (!vd)
- memset(uuid, 0, sizeof (uuid));
- else {
- char buf[20];
- struct sha1_ctx ctx;
- sha1_init_ctx(&ctx);
- sha1_process_bytes(&vd->guid, DDF_GUID_LEN, &ctx);
- if (vd->sec_elmnt_count > 1)
- sha1_process_bytes(&vd->sec_elmnt_seq, 1, &ctx);
- sha1_finish_ctx(&ctx, buf);
- memcpy(uuid, buf, sizeof(uuid));
- }
+ struct vcl *vcl = ddf->currentconf;
+ char *guid;
+ char buf[20];
+ struct sha1_ctx ctx;
+
+ if (vcl)
+ guid = vcl->conf.guid;
+ else
+ guid = ddf->anchor.guid;
+
+ sha1_init_ctx(&ctx);
+ sha1_process_bytes(guid, DDF_GUID_LEN, &ctx);
+ if (vcl && vcl->conf.sec_elmnt_count > 1)
+ sha1_process_bytes(&vcl->conf.sec_elmnt_seq, 1, &ctx);
+ sha1_finish_ctx(&ctx, buf);
+ memcpy(uuid, buf, 4*4);
}
+static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info);
+
static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info)
{
struct ddf_super *ddf = st->sb;
- int i;
- info->array.major_version = 1000;
- info->array.minor_version = 0; /* FIXME use ddf->revision somehow */
- info->array.patch_version = 0;
+ if (ddf->currentconf) {
+ getinfo_super_ddf_bvd(st, info);
+ return;
+ }
+
info->array.raid_disks = __be16_to_cpu(ddf->phys->used_pdes);
info->array.level = LEVEL_CONTAINER;
info->array.layout = 0;
info->array.utime = 0;
info->array.chunk_size = 0;
-// info->data_offset = ???;
-// info->component_size = ???;
info->disk.major = 0;
info->disk.minor = 0;
- info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum);
-// info->disk.raid_disk = find refnum in the table and use index;
- info->disk.raid_disk = -1;
- for (i = 0; i < __be16_to_cpu(ddf->phys->max_pdes) ; i++)
- if (ddf->phys->entries[i].refnum == ddf->dlist->disk.refnum) {
- info->disk.raid_disk = i;
- break;
- }
+ if (ddf->dlist) {
+ info->disk.number = __be32_to_cpu(ddf->dlist->disk.refnum);
+ info->disk.raid_disk = find_phys(ddf, ddf->dlist->disk.refnum);
+
+ info->data_offset = __be64_to_cpu(ddf->phys->
+ entries[info->disk.raid_disk].
+ config_size);
+ info->component_size = ddf->dlist->size - info->data_offset;
+ } else {
+ info->disk.number = -1;
+// info->disk.raid_disk = find refnum in the table and use index;
+ }
info->disk.state = (1 << MD_DISK_SYNC);
- info->reshape_active = 0;
-// uuid_from_super_ddf(info->uuid, sbv);
+ info->reshape_active = 0;
+ info->name[0] = 0;
-// info->name[] ?? ;
-}
+ info->array.major_version = -1;
+ info->array.minor_version = -2;
+ strcpy(info->text_version, "ddf");
+ info->safe_mode_delay = 0;
-static void getinfo_super_n_container(struct supertype *st, struct mdinfo *info)
-{
- /* just need offset and size */
- struct ddf_super *ddf = st->sb;
- int n = info->disk.number;
+ uuid_from_super_ddf(st, info->uuid);
- info->data_offset = __be64_to_cpu(ddf->phys->entries[n].config_size);
- info->component_size = 32*1024*1024 / 512;
}
static int rlq_to_layout(int rlq, int prl, int raiddisks);
static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info)
{
struct ddf_super *ddf = st->sb;
- struct vd_config *vd = find_vdcr(ddf);
+ struct vcl *vc = ddf->currentconf;
+ int cd = ddf->currentdev;
/* FIXME this returns BVD info - what if we want SVD ?? */
- info->array.major_version = 1000;
- info->array.minor_version = 0; /* FIXME use ddf->revision somehow */
- info->array.patch_version = 0;
- info->array.raid_disks = __be16_to_cpu(vd->prim_elmnt_count);
- info->array.level = map_num1(ddf_level_num, vd->prl);
- info->array.layout = rlq_to_layout(vd->rlq, vd->prl,
+ info->array.raid_disks = __be16_to_cpu(vc->conf.prim_elmnt_count);
+ info->array.level = map_num1(ddf_level_num, vc->conf.prl);
+ info->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
info->array.raid_disks);
info->array.md_minor = -1;
- info->array.ctime = DECADE + __be32_to_cpu(*(__u32*)(vd->guid+16));
- info->array.utime = DECADE + __be32_to_cpu(vd->timestamp);
- info->array.chunk_size = 512 << vd->chunk_shift;
-
-// info->data_offset = ???;
-// info->component_size = ???;
+ info->array.ctime = DECADE +
+ __be32_to_cpu(*(__u32*)(vc->conf.guid+16));
+ info->array.utime = DECADE + __be32_to_cpu(vc->conf.timestamp);
+ info->array.chunk_size = 512 << vc->conf.chunk_shift;
+
+ if (cd >= 0 && cd < ddf->mppe) {
+ info->data_offset = __be64_to_cpu(vc->lba_offset[cd]);
+ if (vc->block_sizes)
+ info->component_size = vc->block_sizes[cd];
+ else
+ info->component_size = __be64_to_cpu(vc->conf.blocks);
+ }
info->disk.major = 0;
info->disk.minor = 0;
// info->disk.raid_disk = find refnum in the table and use index;
// info->disk.state = ???;
+ info->container_member = ddf->currentconf->vcnum;
+
+ info->resync_start = 0;
+ if (!(ddf->virt->entries[info->container_member].state
+ & DDF_state_inconsistent) &&
+ (ddf->virt->entries[info->container_member].init_state
+ & DDF_initstate_mask)
+ == DDF_init_full)
+ info->resync_start = ~0ULL;
+
uuid_from_super_ddf(st, info->uuid);
-// info->name[] ?? ;
-}
+ info->container_member = atoi(st->subarray);
+ info->array.major_version = -1;
+ info->array.minor_version = -2;
+ sprintf(info->text_version, "/%s/%s",
+ devnum2devname(st->container_dev),
+ st->subarray);
+ info->safe_mode_delay = 200;
-static void getinfo_super_n_bvd(struct supertype *st, struct mdinfo *info)
-{
- /* Find the particular details for info->disk.raid_disk.
- * This includes data_offset, component_size,
- */
- struct ddf_super *ddf = st->sb;
- __u64 *lba_offset = ddf->newconf->lba_offset;
- struct vd_config *conf = &ddf->newconf->conf;
- info->data_offset = __be64_to_cpu(lba_offset[info->disk.raid_disk]);
- info->component_size = __be64_to_cpu(conf->blocks);
+ info->name[0] = 0;
}
+
static int update_super_ddf(struct supertype *st, struct mdinfo *info,
char *update,
char *devname, int verbose,
* grow: Array has gained a new device - this is currently for
* linear only
* resync: mark as dirty so a resync will happen.
- * uuid: Change the uuid of the array to match watch is given
+ * uuid: Change the uuid of the array to match what is given
* homehost: update the recorded homehost
* name: update the name - preserving the homehost
* _reshape_progress: record new reshape_progress position.
*/
int rv = 0;
// struct ddf_super *ddf = st->sb;
-// struct vd_config *vd = find_vdcr(ddf);
+// struct vd_config *vd = find_vdcr(ddf, info->container_member);
// struct virtual_entry *ve = find_ve(ddf);
-
/* we don't need to handle "force-*" or "assemble" as
* there is no need to 'trick' the kernel. We the metadata is
* first updated to activate the array, all the implied modifications
memcpy(guid+20, &stamp, 4);
if (rfd >= 0) close(rfd);
}
+
+static int init_super_ddf_bvd(struct supertype *st,
+ mdu_array_info_t *info,
+ unsigned long long size,
+ char *name, char *homehost,
+ int *uuid);
+
static int init_super_ddf(struct supertype *st,
mdu_array_info_t *info,
unsigned long long size, char *name, char *homehost,
struct phys_disk *pd;
struct virtual_disk *vd;
- ddf = malloc(sizeof(*ddf));
+ if (!info) {
+ st->sb = NULL;
+ return 0;
+ }
+ if (st->sb)
+ return init_super_ddf_bvd(st, info, size, name, homehost,
+ uuid);
+
+ posix_memalign((void**)&ddf, 512, sizeof(*ddf));
+ memset(ddf, 0, sizeof(*ddf));
ddf->dlist = NULL; /* no physical disks yet */
ddf->conflist = NULL; /* No virtual disks yet */
ddf->anchor.magic = DDF_HEADER_MAGIC;
make_header_guid(ddf->anchor.guid);
- memcpy(ddf->anchor.revision, DDF_REVISION, 8);
+ memcpy(ddf->anchor.revision, DDF_REVISION_2, 8);
ddf->anchor.seq = __cpu_to_be32(1);
ddf->anchor.timestamp = __cpu_to_be32(time(0) - DECADE);
ddf->anchor.openflag = 0xFF;
ddf->anchor.max_vd_entries = __cpu_to_be16(max_virt_disks); /* ?? */
ddf->anchor.max_partitions = __cpu_to_be16(64); /* ?? */
ddf->max_part = 64;
- ddf->anchor.config_record_len = __cpu_to_be16(1 + 256*12/512);
- ddf->anchor.max_primary_element_entries = __cpu_to_be16(256);
+ ddf->mppe = 256;
+ ddf->conf_rec_len = 1 + ROUND_UP(ddf->mppe * (4+8), 512)/512;
+ ddf->anchor.config_record_len = __cpu_to_be16(ddf->conf_rec_len);
+ ddf->anchor.max_primary_element_entries = __cpu_to_be16(ddf->mppe);
memset(ddf->anchor.pad3, 0xff, 54);
-
/* controller sections is one sector long immediately
* after the ddf header */
sector = 1;
__cpu_to_be32(vdsize/512); /* max_vd_entries/8 */
sector += vdsize/512;
- clen = (1 + 256*12/512) * (64+1);
+ clen = ddf->conf_rec_len * (ddf->max_part+1);
ddf->anchor.config_section_offset = __cpu_to_be32(sector);
ddf->anchor.config_section_length = __cpu_to_be32(clen);
sector += clen;
* Remaining 16 are serial number.... maybe a hostname would do?
*/
memcpy(ddf->controller.guid, T10, sizeof(T10));
- gethostname(hostname, 17);
- hostname[17] = 0;
+ gethostname(hostname, sizeof(hostname));
+ hostname[sizeof(hostname) - 1] = 0;
hostlen = strlen(hostname);
memcpy(ddf->controller.guid + 24 - hostlen, hostname, hostlen);
for (i = strlen(T10) ; i+hostlen < 24; i++)
memset(ddf->controller.pad, 0xff, 8);
memset(ddf->controller.vendor_data, 0xff, 448);
- pd = ddf->phys = malloc(pdsize);
+ posix_memalign((void**)&pd, 512, pdsize);
+ ddf->phys = pd;
ddf->pdsize = pdsize;
memset(pd, 0xff, pdsize);
pd->max_pdes = __cpu_to_be16(max_phys_disks);
memset(pd->pad, 0xff, 52);
- vd = ddf->virt = malloc(vdsize);
+ posix_memalign((void**)&vd, 512, vdsize);
+ ddf->virt = vd;
ddf->vdsize = vdsize;
memset(vd, 0, vdsize);
vd->magic = DDF_VIRT_RECORDS_MAGIC;
memset(&vd->entries[i], 0xff, sizeof(struct virtual_entry));
st->sb = ddf;
+ ddf->updates_pending = 1;
return 1;
}
case ALGORITHM_LEFT_ASYMMETRIC:
return DDF_RAID5_N_RESTART;
case ALGORITHM_RIGHT_ASYMMETRIC:
- return DDF_RAID5_0_RESTART;
+ if (level == 5)
+ return DDF_RAID5_0_RESTART;
+ else
+ return DDF_RAID6_0_RESTART;
case ALGORITHM_LEFT_SYMMETRIC:
return DDF_RAID5_N_CONTINUE;
case ALGORITHM_RIGHT_SYMMETRIC:
return -1; /* FIXME this isn't checked */
}
case DDF_RAID5:
- case DDF_RAID6:
switch(rlq) {
case DDF_RAID5_N_RESTART:
return ALGORITHM_LEFT_ASYMMETRIC;
default:
return -1;
}
+ case DDF_RAID6:
+ switch(rlq) {
+ case DDF_RAID5_N_RESTART:
+ return ALGORITHM_LEFT_ASYMMETRIC;
+ case DDF_RAID6_0_RESTART:
+ return ALGORITHM_RIGHT_ASYMMETRIC;
+ case DDF_RAID5_N_CONTINUE:
+ return ALGORITHM_LEFT_SYMMETRIC;
+ default:
+ return -1;
+ }
}
return -1;
}
+#ifndef MDASSEMBLE
+struct extent {
+ unsigned long long start, size;
+};
+static int cmp_extent(const void *av, const void *bv)
+{
+ const struct extent *a = av;
+ const struct extent *b = bv;
+ if (a->start < b->start)
+ return -1;
+ if (a->start > b->start)
+ return 1;
+ return 0;
+}
+
+static struct extent *get_extents(struct ddf_super *ddf, struct dl *dl)
+{
+ /* find a list of used extents on the give physical device
+ * (dnum) of the given ddf.
+ * Return a malloced array of 'struct extent'
+
+FIXME ignore DDF_Legacy devices?
+
+ */
+ struct extent *rv;
+ int n = 0;
+ int i, j;
+
+ rv = malloc(sizeof(struct extent) * (ddf->max_part + 2));
+ if (!rv)
+ return NULL;
+
+ for (i = 0; i < ddf->max_part; i++) {
+ struct vcl *v = dl->vlist[i];
+ if (v == NULL)
+ continue;
+ for (j=0; j < v->conf.prim_elmnt_count; j++)
+ if (v->conf.phys_refnum[j] == dl->disk.refnum) {
+ /* This device plays role 'j' in 'v'. */
+ rv[n].start = __be64_to_cpu(v->lba_offset[j]);
+ rv[n].size = __be64_to_cpu(v->conf.blocks);
+ n++;
+ break;
+ }
+ }
+ qsort(rv, n, sizeof(*rv), cmp_extent);
+
+ rv[n].start = __be64_to_cpu(ddf->phys->entries[dl->pdnum].config_size);
+ rv[n].size = 0;
+ return rv;
+}
+#endif
+
static int init_super_ddf_bvd(struct supertype *st,
mdu_array_info_t *info,
unsigned long long size,
struct virtual_entry *ve;
struct vcl *vcl;
struct vd_config *vc;
- int mppe;
- int conflen;
if (__be16_to_cpu(ddf->virt->populated_vdes)
>= __be16_to_cpu(ddf->virt->max_vdes)) {
return 0;
}
ve = &ddf->virt->entries[venum];
- st->container_member = venum;
/* A Virtual Disk GUID contains the T10 Vendor ID, controller type,
* timestamp, random number
ve->pad0 = 0xFFFF;
ve->guid_crc = crc32(0, (unsigned char*)ddf->anchor.guid, DDF_GUID_LEN);
ve->type = 0;
- ve->state = 0;
- ve->init_state = 0;
- if (!(info->state & 1))
- ve->init_state = DDF_state_inconsistent;
+ ve->state = DDF_state_degraded; /* Will be modified as devices are added */
+ if (info->state & 1) /* clean */
+ ve->init_state = DDF_init_full;
+ else
+ ve->init_state = DDF_init_not;
+
memset(ve->pad1, 0xff, 14);
memset(ve->name, ' ', 16);
if (name)
__cpu_to_be16(__be16_to_cpu(ddf->virt->populated_vdes)+1);
/* Now create a new vd_config */
- conflen = __be16_to_cpu(ddf->active->config_record_len);
- vcl = malloc(offsetof(struct vcl, conf) + conflen * 512);
- mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
- vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[mppe];
+ posix_memalign((void**)&vcl, 512,
+ (offsetof(struct vcl, conf) + ddf->conf_rec_len * 512));
+ vcl->lba_offset = (__u64*) &vcl->conf.phys_refnum[ddf->mppe];
+ vcl->vcnum = venum;
+ sprintf(st->subarray, "%d", venum);
+ vcl->block_sizes = NULL; /* FIXME not for CONCAT */
vc = &vcl->conf;
memset(vc->v3, 0xff, 16);
memset(vc->vendor, 0xff, 32);
- memset(vc->phys_refnum, 0xff, 4*mppe);
- memset(vc->phys_refnum+mppe, 0x00, 8*mppe);
+ memset(vc->phys_refnum, 0xff, 4*ddf->mppe);
+ memset(vc->phys_refnum+(ddf->mppe * 4), 0x00, 8*ddf->mppe);
vcl->next = ddf->conflist;
ddf->conflist = vcl;
- ddf->newconf = vcl;
+ ddf->currentconf = vcl;
+ ddf->updates_pending = 1;
return 1;
}
+#ifndef MDASSEMBLE
static void add_to_super_ddf_bvd(struct supertype *st,
mdu_disk_info_t *dk, int fd, char *devname)
{
* We need to find suitable free space in that device and update
* the phys_refnum and lba_offset for the newly created vd_config.
* We might also want to update the type in the phys_disk
- * section. FIXME
+ * section.
*/
struct dl *dl;
struct ddf_super *ddf = st->sb;
struct vd_config *vc;
__u64 *lba_offset;
- int mppe;
+ int working;
+ int i;
+ unsigned long long blocks, pos, esize;
+ struct extent *ex;
for (dl = ddf->dlist; dl ; dl = dl->next)
if (dl->major == dk->major &&
if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
return;
- vc = &ddf->newconf->conf;
+ vc = &ddf->currentconf->conf;
+ lba_offset = ddf->currentconf->lba_offset;
+
+ ex = get_extents(ddf, dl);
+ if (!ex)
+ return;
+
+ i = 0; pos = 0;
+ blocks = __be64_to_cpu(vc->blocks);
+ if (ddf->currentconf->block_sizes)
+ blocks = ddf->currentconf->block_sizes[dk->raid_disk];
+
+ do {
+ esize = ex[i].start - pos;
+ if (esize >= blocks)
+ break;
+ pos = ex[i].start + ex[i].size;
+ i++;
+ } while (ex[i-1].size);
+
+ free(ex);
+ if (esize < blocks)
+ return;
+
+ ddf->currentdev = dk->raid_disk;
vc->phys_refnum[dk->raid_disk] = dl->disk.refnum;
- mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
- lba_offset = (__u64*)(vc->phys_refnum + mppe);
- lba_offset[dk->raid_disk] = 0; /* FIXME */
+ lba_offset[dk->raid_disk] = __cpu_to_be64(pos);
- dl->vlist[0] =ddf->newconf; /* FIXME */
+ for (i=0; i < ddf->max_part ; i++)
+ if (dl->vlist[i] == NULL)
+ break;
+ if (i == ddf->max_part)
+ return;
+ dl->vlist[i] = ddf->currentconf;
dl->fd = fd;
dl->devname = devname;
+
+ /* Check how many working raid_disks, and if we can mark
+ * array as optimal yet
+ */
+ working = 0;
+
+ for (i=0; i < __be16_to_cpu(vc->prim_elmnt_count); i++)
+ if (vc->phys_refnum[i] != 0xffffffff)
+ working++;
+
+ /* Find which virtual_entry */
+ i = ddf->currentconf->vcnum;
+ if (working == __be16_to_cpu(vc->prim_elmnt_count))
+ ddf->virt->entries[i].state =
+ (ddf->virt->entries[i].state & ~DDF_state_mask)
+ | DDF_state_optimal;
+
+ if (vc->prl == DDF_RAID6 &&
+ working+1 == __be16_to_cpu(vc->prim_elmnt_count))
+ ddf->virt->entries[i].state =
+ (ddf->virt->entries[i].state & ~DDF_state_mask)
+ | DDF_state_part_optimal;
+
+ ddf->phys->entries[dl->pdnum].type &= ~__cpu_to_be16(DDF_Global_Spare);
+ ddf->phys->entries[dl->pdnum].type |= __cpu_to_be16(DDF_Active_in_VD);
+ ddf->updates_pending = 1;
}
/* add a device to a container, either while creating it or while
int n, i;
struct stat stb;
+ if (ddf->currentconf) {
+ add_to_super_ddf_bvd(st, dk, fd, devname);
+ return;
+ }
+
/* This is device numbered dk->number. We need to create
* a phys_disk entry and a more detailed disk_data entry.
*/
fstat(fd, &stb);
- dd = malloc(sizeof(*dd) + sizeof(dd->vlist[0]) * (ddf->max_part+1));
+ posix_memalign((void**)&dd, 512,
+ sizeof(*dd) + sizeof(dd->vlist[0]) * ddf->max_part);
dd->major = major(stb.st_rdev);
dd->minor = minor(stb.st_rdev);
dd->devname = devname;
- dd->next = ddf->dlist;
dd->fd = fd;
+ dd->spare = NULL;
dd->disk.magic = DDF_PHYS_DATA_MAGIC;
now = time(0);
*(__u32*)(dd->disk.guid + 16) = random();
*(__u32*)(dd->disk.guid + 20) = random();
- dd->disk.refnum = random(); /* and hope for the best FIXME check this is unique!!*/
+ do {
+ /* Cannot be bothered finding a CRC of some irrelevant details*/
+ dd->disk.refnum = random();
+ for (i = __be16_to_cpu(ddf->active->max_pd_entries) - 1;
+ i >= 0; i--)
+ if (ddf->phys->entries[i].refnum == dd->disk.refnum)
+ break;
+ } while (i >= 0);
+
dd->disk.forced_ref = 1;
dd->disk.forced_guid = 1;
memset(dd->disk.vendor, ' ', 32);
memcpy(dd->disk.vendor, "Linux", 5);
memset(dd->disk.pad, 0xff, 442);
- for (i = 0; i < ddf->max_part+1 ; i++)
+ for (i = 0; i < ddf->max_part ; i++)
dd->vlist[i] = NULL;
n = __be16_to_cpu(ddf->phys->used_pdes);
pde = &ddf->phys->entries[n];
- n++;
- ddf->phys->used_pdes = __cpu_to_be16(n);
+ dd->pdnum = n;
+
+ if (st->update_tail) {
+ int len = (sizeof(struct phys_disk) +
+ sizeof(struct phys_disk_entry));
+ struct phys_disk *pd;
+
+ pd = malloc(len);
+ pd->magic = DDF_PHYS_RECORDS_MAGIC;
+ pd->used_pdes = __cpu_to_be16(n);
+ pde = &pd->entries[0];
+ dd->mdupdate = pd;
+ } else {
+ n++;
+ ddf->phys->used_pdes = __cpu_to_be16(n);
+ }
memcpy(pde->guid, dd->disk.guid, DDF_GUID_LEN);
pde->refnum = dd->disk.refnum;
- pde->type = __cpu_to_be16(DDF_Forced_PD_GUID |DDF_Global_Spare);
+ pde->type = __cpu_to_be16(DDF_Forced_PD_GUID | DDF_Global_Spare);
pde->state = __cpu_to_be16(DDF_Online);
get_dev_size(fd, NULL, &size);
/* We are required to reserve 32Meg, and record the size in sectors */
sprintf(pde->path, "%17.17s","Information: nil") ;
memset(pde->pad, 0xff, 6);
- ddf->dlist = dd;
+ dd->size = size >> 9;
+ if (st->update_tail) {
+ dd->next = ddf->add_list;
+ ddf->add_list = dd;
+ } else {
+ dd->next = ddf->dlist;
+ ddf->dlist = dd;
+ ddf->updates_pending = 1;
+ }
}
/*
* container.
*/
-#ifndef MDASSEMBLE
-static int write_init_super_ddf(struct supertype *st)
+static unsigned char null_conf[4096+512];
+
+static int __write_init_super_ddf(struct supertype *st, int do_close)
{
struct ddf_super *ddf = st->sb;
write(fd, ddf->virt, ddf->vdsize);
/* Now write lots of config records. */
- n_config = __be16_to_cpu(ddf->active->max_partitions);
- conf_size = __be16_to_cpu(ddf->active->config_record_len) * 512;
+ n_config = ddf->max_part;
+ conf_size = ddf->conf_rec_len * 512;
for (i = 0 ; i <= n_config ; i++) {
struct vcl *c = d->vlist[i];
+ if (i == n_config)
+ c = (struct vcl*)d->spare;
if (c) {
c->conf.crc = calc_crc(&c->conf, conf_size);
write(fd, &c->conf, conf_size);
} else {
- __u32 sig = 0xffffffff;
- write(fd, &sig, 4);
- lseek64(fd, conf_size-4, SEEK_CUR);
+ char *null_aligned = (char*)((((unsigned long)null_conf)+511)&~511UL);
+ if (null_conf[0] != 0xff)
+ memset(null_conf, 0xff, sizeof(null_conf));
+ int togo = conf_size;
+ while (togo > sizeof(null_conf)-512) {
+ write(fd, null_aligned, sizeof(null_conf)-512);
+ togo -= sizeof(null_conf)-512;
+ }
+ write(fd, null_aligned, togo);
}
}
d->disk.crc = calc_crc(&d->disk, 512);
lseek64(fd, (size-1)*512, SEEK_SET);
write(fd, &ddf->anchor, 512);
- close(fd);
+ if (do_close) {
+ close(fd);
+ d->fd = -1;
+ }
}
return 1;
}
+
+static int write_init_super_ddf(struct supertype *st)
+{
+
+ if (st->update_tail) {
+ /* queue the virtual_disk and vd_config as metadata updates */
+ struct virtual_disk *vd;
+ struct vd_config *vc;
+ struct ddf_super *ddf = st->sb;
+ int len;
+
+ if (!ddf->currentconf) {
+ int len = (sizeof(struct phys_disk) +
+ sizeof(struct phys_disk_entry));
+
+ /* adding a disk to the container. */
+ if (!ddf->add_list)
+ return 0;
+
+ append_metadata_update(st, ddf->add_list->mdupdate, len);
+ ddf->add_list->mdupdate = NULL;
+ return 0;
+ }
+
+ /* Newly created VD */
+
+ /* First the virtual disk. We have a slightly fake header */
+ len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
+ vd = malloc(len);
+ *vd = *ddf->virt;
+ vd->entries[0] = ddf->virt->entries[ddf->currentconf->vcnum];
+ vd->populated_vdes = __cpu_to_be16(ddf->currentconf->vcnum);
+ append_metadata_update(st, vd, len);
+
+ /* Then the vd_config */
+ len = ddf->conf_rec_len * 512;
+ vc = malloc(len);
+ memcpy(vc, &ddf->currentconf->conf, len);
+ append_metadata_update(st, vc, len);
+
+ /* FIXME I need to close the fds! */
+ return 0;
+ } else
+ return __write_init_super_ddf(st, 1);
+}
+
#endif
static __u64 avail_size_ddf(struct supertype *st, __u64 devsize)
}
#ifndef MDASSEMBLE
-int validate_geometry_ddf(struct supertype *st,
- int level, int layout, int raiddisks,
- int chunk, unsigned long long size,
- char *dev, unsigned long long *freesize)
+static int
+validate_geometry_ddf_container(struct supertype *st,
+ int level, int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *dev, unsigned long long *freesize,
+ int verbose);
+
+static int validate_geometry_ddf_bvd(struct supertype *st,
+ int level, int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *dev, unsigned long long *freesize,
+ int verbose);
+
+static int validate_geometry_ddf(struct supertype *st,
+ int level, int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *dev, unsigned long long *freesize,
+ int verbose)
{
int fd;
struct mdinfo *sra;
*/
if (level == LEVEL_CONTAINER) {
- st->ss = &super_ddf_container;
- if (dev) {
- int rv =st->ss->validate_geometry(st, level, layout,
- raiddisks, chunk,
- size,
- NULL, freesize);
- if (rv)
- return rv;
- }
- return st->ss->validate_geometry(st, level, layout, raiddisks,
- chunk, size, dev, freesize);
+ /* Must be a fresh device to add to a container */
+ return validate_geometry_ddf_container(st, level, layout,
+ raiddisks, chunk,
+ size, dev, freesize,
+ verbose);
}
if (st->sb) {
- /* creating in a given container */
- st->ss = &super_ddf_bvd;
- if (dev) {
- int rv =st->ss->validate_geometry(st, level, layout,
- raiddisks, chunk,
- size,
- NULL, freesize);
- if (rv)
- return rv;
- }
- return st->ss->validate_geometry(st, level, layout, raiddisks,
- chunk, size, dev, freesize);
+ /* A container has already been opened, so we are
+ * creating in there. Maybe a BVD, maybe an SVD.
+ * Should make a distinction one day.
+ */
+ return validate_geometry_ddf_bvd(st, level, layout, raiddisks,
+ chunk, size, dev, freesize,
+ verbose);
}
- /* FIXME should exclude MULTIPATH, or more appropriately, allow
- * only known levels.
- */
- if (!dev)
+ if (!dev) {
+ /* Initial sanity check. Exclude illegal levels. */
+ int i;
+ for (i=0; ddf_level_num[i].num1 != MAXINT; i++)
+ if (ddf_level_num[i].num2 == level)
+ break;
+ if (ddf_level_num[i].num1 == MAXINT)
+ return 0;
+ /* Should check layout? etc */
return 1;
+ }
- /* This device needs to be either a device in a 'ddf' container,
- * or it needs to be a 'ddf-bvd' array.
+ /* This is the first device for the array.
+ * If it is a container, we read it in and do automagic allocations,
+ * no other devices should be given.
+ * Otherwise it must be a member device of a container, and we
+ * do manual allocation.
+ * Later we should check for a BVD and make an SVD.
*/
-
fd = open(dev, O_RDONLY|O_EXCL, 0);
if (fd >= 0) {
sra = sysfs_read(fd, 0, GET_VERSION);
close(fd);
if (sra && sra->array.major_version == -1 &&
- strcmp(sra->text_version, "ddf-bvd") == 0) {
- st->ss = &super_ddf_svd;
- return st->ss->validate_geometry(st, level, layout,
- raiddisks, chunk, size,
- dev, freesize);
+ strcmp(sra->text_version, "ddf") == 0) {
+
+ /* load super */
+ /* find space for 'n' devices. */
+ /* remember the devices */
+ /* Somehow return the fact that we have enough */
}
- fprintf(stderr,
- Name ": Cannot create this array on device %s\n",
- dev);
+ if (verbose)
+ fprintf(stderr,
+ Name ": ddf: Cannot create this array "
+ "on device %s\n",
+ dev);
return 0;
}
if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
- fprintf(stderr, Name ": Cannot open %s: %s\n",
- dev, strerror(errno));
+ if (verbose)
+ fprintf(stderr, Name ": ddf: Cannot open %s: %s\n",
+ dev, strerror(errno));
return 0;
}
/* Well, it is in use by someone, maybe a 'ddf' container. */
cfd = open_container(fd);
if (cfd < 0) {
close(fd);
- fprintf(stderr, Name ": Cannot use %s: It is busy\n",
- dev);
+ if (verbose)
+ fprintf(stderr, Name ": ddf: Cannot use %s: %s\n",
+ dev, strerror(EBUSY));
return 0;
}
sra = sysfs_read(cfd, 0, GET_VERSION);
* and try to create a bvd
*/
struct ddf_super *ddf;
- st->ss = &super_ddf_bvd;
if (load_super_ddf_all(st, cfd, (void **)&ddf, NULL, 1) == 0) {
st->sb = ddf;
st->container_dev = fd2devnum(cfd);
- st->container_member = 27; // FIXME
close(cfd);
- return st->ss->validate_geometry(st, level, layout,
+ return validate_geometry_ddf_bvd(st, level, layout,
raiddisks, chunk, size,
- dev, freesize);
+ dev, freesize,
+ verbose);
}
close(cfd);
- }
- fprintf(stderr, Name ": Cannot use %s: Already in use\n",
- dev);
+ } else /* device may belong to a different container */
+ return 0;
+
return 1;
}
-int validate_geometry_ddf_container(struct supertype *st,
- int level, int layout, int raiddisks,
- int chunk, unsigned long long size,
- char *dev, unsigned long long *freesize)
+static int
+validate_geometry_ddf_container(struct supertype *st,
+ int level, int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *dev, unsigned long long *freesize,
+ int verbose)
{
int fd;
unsigned long long ldsize;
fd = open(dev, O_RDONLY|O_EXCL, 0);
if (fd < 0) {
- fprintf(stderr, Name ": Cannot open %s: %s\n",
- dev, strerror(errno));
+ if (verbose)
+ fprintf(stderr, Name ": ddf: Cannot open %s: %s\n",
+ dev, strerror(errno));
return 0;
}
if (!get_dev_size(fd, dev, &ldsize)) {
}
close(fd);
- *freesize = avail_size_ddf(st, ldsize);
+ *freesize = avail_size_ddf(st, ldsize >> 9);
return 1;
}
-struct extent {
- unsigned long long start, size;
-};
-int cmp_extent(const void *av, const void *bv)
-{
- const struct extent *a = av;
- const struct extent *b = bv;
- if (a->start < b->start)
- return -1;
- if (a->start > b->start)
- return 1;
- return 0;
-}
-
-struct extent *get_extents(struct ddf_super *ddf, struct dl *dl)
-{
- /* find a list of used extents on the give physical device
- * (dnum) or the given ddf.
- * Return a malloced array of 'struct extent'
-
-FIXME ignore DDF_Legacy devices?
-
- */
- struct extent *rv;
- int n = 0;
- int dnum;
- int i, j;
-
- for (dnum = 0; dnum < ddf->phys->used_pdes; dnum++)
- if (memcmp(dl->disk.guid,
- ddf->phys->entries[dnum].guid,
- DDF_GUID_LEN) == 0)
- break;
-
- if (dnum == ddf->phys->used_pdes)
- return NULL;
-
- rv = malloc(sizeof(struct extent) * (ddf->max_part + 2));
- if (!rv)
- return NULL;
-
- for (i = 0; i < ddf->max_part+1; i++) {
- struct vcl *v = dl->vlist[i];
- if (v == NULL)
- continue;
- for (j=0; j < v->conf.prim_elmnt_count; j++)
- if (v->conf.phys_refnum[j] == dl->disk.refnum) {
- /* This device plays role 'j' in 'v'. */
- rv[n].start = __be64_to_cpu(v->lba_offset[j]);
- rv[n].size = __be64_to_cpu(v->conf.blocks);
- n++;
- break;
- }
- }
- qsort(rv, n, sizeof(*rv), cmp_extent);
-
- rv[n].start = __be64_to_cpu(ddf->phys->entries[dnum].config_size);
- rv[n].size = 0;
- return rv;
-}
-
-int validate_geometry_ddf_bvd(struct supertype *st,
- int level, int layout, int raiddisks,
- int chunk, unsigned long long size,
- char *dev, unsigned long long *freesize)
+static int validate_geometry_ddf_bvd(struct supertype *st,
+ int level, int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *dev, unsigned long long *freesize,
+ int verbose)
{
struct stat stb;
struct ddf_super *ddf = st->sb;
for (dl = ddf->dlist; dl ; dl = dl->next)
{
int found = 0;
+ pos = 0;
i = 0;
e = get_extents(ddf, dl);
free(e);
}
if (dcnt < raiddisks) {
- fprintf(stderr, Name ": Not enough devices with space "
- "for this array (%d < %d)\n",
- dcnt, raiddisks);
+ if (verbose)
+ fprintf(stderr,
+ Name ": ddf: Not enough devices with "
+ "space for this array (%d < %d)\n",
+ dcnt, raiddisks);
return 0;
}
return 1;
break;
}
if (!dl) {
- fprintf(stderr, Name ": %s is not in the same DDF set\n",
- dev);
+ if (verbose)
+ fprintf(stderr, Name ": ddf: %s is not in the "
+ "same DDF set\n",
+ dev);
return 0;
}
e = get_extents(ddf, dl);
return 1;
}
-int validate_geometry_ddf_svd(struct supertype *st,
- int level, int layout, int raiddisks,
- int chunk, unsigned long long size,
- char *dev, unsigned long long *freesize)
-{
- /* dd/svd only supports striped, mirrored, concat, spanned... */
- if (level != LEVEL_LINEAR &&
- level != 0 &&
- level != 1)
- return 0;
- return 1;
-}
-
static int load_super_ddf_all(struct supertype *st, int fd,
void **sbp, char *devname, int keep_fd)
strcmp(sra->text_version, "ddf") != 0)
return 1;
- super = malloc(sizeof(*super));
- if (!super)
+ if (posix_memalign((void**)&super, 512, sizeof(*super)) != 0)
return 1;
+ memset(super, 0, sizeof(*super));
/* first, try each device, and choose the best ddf */
for (sd = sra->devs ; sd ; sd = sd->next) {
int rv;
sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
- dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY);
- if (!dfd)
+ dfd = dev_open(nm, O_RDONLY);
+ if (dfd < 0)
return 2;
rv = load_ddf_headers(dfd, super, NULL);
- if (!keep_fd) close(dfd);
+ close(dfd);
if (rv == 0) {
seq = __be32_to_cpu(super->active->seq);
if (super->active->openflag)
/* OK, load this ddf */
sprintf(nm, "%d:%d", best->disk.major, best->disk.minor);
dfd = dev_open(nm, O_RDONLY);
- if (!dfd)
+ if (dfd < 0)
return 1;
load_ddf_headers(dfd, super, NULL);
load_ddf_global(dfd, super, NULL);
for (sd = sra->devs ; sd ; sd = sd->next) {
sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY);
- if (!dfd)
+ if (dfd < 0)
return 2;
+ load_ddf_headers(dfd, super, NULL);
seq = load_ddf_local(dfd, super, NULL, keep_fd);
if (!keep_fd) close(dfd);
}
+ if (st->subarray[0]) {
+ struct vcl *v;
+
+ for (v = super->conflist; v; v = v->next)
+ if (v->vcnum == atoi(st->subarray))
+ super->currentconf = v;
+ if (!super->currentconf)
+ return 1;
+ }
*sbp = super;
if (st->ss == NULL) {
- st->ss = &super_ddf_container;
+ st->ss = &super_ddf;
st->minor_version = 0;
st->max_devs = 512;
+ st->container_dev = fd2devnum(fd);
}
+ st->loaded_container = 1;
return 0;
}
-#endif
-
-
+#endif /* MDASSEMBLE */
static struct mdinfo *container_content_ddf(struct supertype *st)
{
for (vc = ddf->conflist ; vc ; vc=vc->next)
{
- int mppe;
int i;
struct mdinfo *this;
this = malloc(sizeof(*this));
this->next = rest;
rest = this;
- this->array.major_version = 1000;
- this->array.minor_version = 0;
- this->array.patch_version = 0;
this->array.level = map_num1(ddf_level_num, vc->conf.prl);
this->array.raid_disks =
__be16_to_cpu(vc->conf.prim_elmnt_count);
- /* FIXME this should be mapped */
- this->array.layout = vc->conf.rlq;
+ this->array.layout = rlq_to_layout(vc->conf.rlq, vc->conf.prl,
+ this->array.raid_disks);
this->array.md_minor = -1;
+ this->array.major_version = -1;
+ this->array.minor_version = -2;
this->array.ctime = DECADE +
__be32_to_cpu(*(__u32*)(vc->conf.guid+16));
this->array.utime = DECADE +
__be32_to_cpu(vc->conf.timestamp);
this->array.chunk_size = 512 << vc->conf.chunk_shift;
- for (i=0; i < __be16_to_cpu(ddf->virt->populated_vdes); i++)
- if (memcmp(ddf->virt->entries[i].guid,
- vc->conf.guid, DDF_GUID_LEN) == 0)
- break;
- if (ddf->virt->entries[i].state & DDF_state_inconsistent)
+ i = vc->vcnum;
+ if ((ddf->virt->entries[i].state & DDF_state_inconsistent) ||
+ (ddf->virt->entries[i].init_state & DDF_initstate_mask) !=
+ DDF_init_full) {
this->array.state = 0;
- else
+ this->resync_start = 0;
+ } else {
this->array.state = 1;
+ this->resync_start = ~0ULL;
+ }
memcpy(this->name, ddf->virt->entries[i].name, 32);
- this->name[33]=0;
+ this->name[32]=0;
memset(this->uuid, 0, sizeof(this->uuid));
this->component_size = __be64_to_cpu(vc->conf.blocks);
this->array.size = this->component_size / 2;
+ this->container_member = i;
- mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
- for (i=0 ; i < mppe ; i++) {
+ ddf->currentconf = vc;
+ uuid_from_super_ddf(st, this->uuid);
+ ddf->currentconf = NULL;
+
+ sprintf(this->text_version, "/%s/%d",
+ devnum2devname(st->container_dev),
+ this->container_member);
+
+ for (i=0 ; i < ddf->mppe ; i++) {
struct mdinfo *dev;
struct dl *d;
dev->disk.raid_disk = i;
dev->disk.state = (1<<MD_DISK_SYNC)|(1<<MD_DISK_ACTIVE);
- dev->events = __le32_to_cpu(ddf->primary.seq);
- dev->data_offset = vc->lba_offset[i];
+ dev->events = __be32_to_cpu(ddf->primary.seq);
+ dev->data_offset = __be64_to_cpu(vc->lba_offset[i]);
dev->component_size = __be64_to_cpu(vc->conf.blocks);
if (d->devname)
strcpy(dev->name, d->devname);
return rest;
}
-static int init_zero_ddf(struct supertype *st,
- mdu_array_info_t *info,
- unsigned long long size, char *name,
- char *homehost, int *uuid)
-{
- st->sb = NULL;
- return 0;
-}
-
static int store_zero_ddf(struct supertype *st, int fd)
{
unsigned long long dsize;
- char buf[512];
- memset(buf, 0, 512);
-
+ void *buf;
if (!get_dev_size(fd, NULL, &dsize))
return 1;
+ posix_memalign(&buf, 512, 512);
+ memset(buf, 0, 512);
+
lseek64(fd, dsize-512, 0);
write(fd, buf, 512);
+ free(buf);
return 0;
}
return 0;
}
+#ifndef MDASSEMBLE
+/*
+ * A new array 'a' has been started which claims to be instance 'inst'
+ * within container 'c'.
+ * We need to confirm that the array matches the metadata in 'c' so
+ * that we don't corrupt any metadata.
+ */
+static int ddf_open_new(struct supertype *c, struct active_array *a, char *inst)
+{
+ dprintf("ddf: open_new %s\n", inst);
+ a->info.container_member = atoi(inst);
+ return 0;
+}
+
+/*
+ * The array 'a' is to be marked clean in the metadata.
+ * If '->resync_start' is not ~(unsigned long long)0, then the array is only
+ * clean up to the point (in sectors). If that cannot be recorded in the
+ * metadata, then leave it as dirty.
+ *
+ * For DDF, we need to clear the DDF_state_inconsistent bit in the
+ * !global! virtual_disk.virtual_entry structure.
+ */
+static int ddf_set_array_state(struct active_array *a, int consistent)
+{
+ struct ddf_super *ddf = a->container->sb;
+ int inst = a->info.container_member;
+ int old = ddf->virt->entries[inst].state;
+ if (consistent == 2) {
+ /* Should check if a recovery should be started FIXME */
+ consistent = 1;
+ if (a->resync_start != ~0ULL)
+ consistent = 0;
+ }
+ if (consistent)
+ ddf->virt->entries[inst].state &= ~DDF_state_inconsistent;
+ else
+ ddf->virt->entries[inst].state |= DDF_state_inconsistent;
+ if (old != ddf->virt->entries[inst].state)
+ ddf->updates_pending = 1;
+
+ old = ddf->virt->entries[inst].init_state;
+ ddf->virt->entries[inst].init_state &= ~DDF_initstate_mask;
+ if (a->resync_start == ~0ULL)
+ ddf->virt->entries[inst].init_state |= DDF_init_full;
+ else if (a->resync_start == 0)
+ ddf->virt->entries[inst].init_state |= DDF_init_not;
+ else
+ ddf->virt->entries[inst].init_state |= DDF_init_quick;
+ if (old != ddf->virt->entries[inst].init_state)
+ ddf->updates_pending = 1;
+
+ dprintf("ddf mark %d %s %llu\n", inst, consistent?"clean":"dirty",
+ a->resync_start);
+ return consistent;
+}
+
+/*
+ * The state of each disk is stored in the global phys_disk structure
+ * in phys_disk.entries[n].state.
+ * This makes various combinations awkward.
+ * - When a device fails in any array, it must be failed in all arrays
+ * that include a part of this device.
+ * - When a component is rebuilding, we cannot include it officially in the
+ * array unless this is the only array that uses the device.
+ *
+ * So: when transitioning:
+ * Online -> failed, just set failed flag. monitor will propagate
+ * spare -> online, the device might need to be added to the array.
+ * spare -> failed, just set failed. Don't worry if in array or not.
+ */
+static void ddf_set_disk(struct active_array *a, int n, int state)
+{
+ struct ddf_super *ddf = a->container->sb;
+ int inst = a->info.container_member;
+ struct vd_config *vc = find_vdcr(ddf, inst);
+ int pd = find_phys(ddf, vc->phys_refnum[n]);
+ int i, st, working;
+
+ if (vc == NULL) {
+ dprintf("ddf: cannot find instance %d!!\n", inst);
+ return;
+ }
+ if (pd < 0) {
+ /* disk doesn't currently exist. If it is now in_sync,
+ * insert it. */
+ if ((state & DS_INSYNC) && ! (state & DS_FAULTY)) {
+ /* Find dev 'n' in a->info->devs, determine the
+ * ddf refnum, and set vc->phys_refnum and update
+ * phys->entries[]
+ */
+ /* FIXME */
+ }
+ } else {
+ int old = ddf->phys->entries[pd].state;
+ if (state & DS_FAULTY)
+ ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Failed);
+ if (state & DS_INSYNC) {
+ ddf->phys->entries[pd].state |= __cpu_to_be16(DDF_Online);
+ ddf->phys->entries[pd].state &= __cpu_to_be16(~DDF_Rebuilding);
+ }
+ if (old != ddf->phys->entries[pd].state)
+ ddf->updates_pending = 1;
+ }
+
+ dprintf("ddf: set_disk %d to %x\n", n, state);
+
+ /* Now we need to check the state of the array and update
+ * virtual_disk.entries[n].state.
+ * It needs to be one of "optimal", "degraded", "failed".
+ * I don't understand 'deleted' or 'missing'.
+ */
+ working = 0;
+ for (i=0; i < a->info.array.raid_disks; i++) {
+ pd = find_phys(ddf, vc->phys_refnum[i]);
+ if (pd < 0)
+ continue;
+ st = __be16_to_cpu(ddf->phys->entries[pd].state);
+ if ((st & (DDF_Online|DDF_Failed|DDF_Rebuilding))
+ == DDF_Online)
+ working++;
+ }
+ state = DDF_state_degraded;
+ if (working == a->info.array.raid_disks)
+ state = DDF_state_optimal;
+ else switch(vc->prl) {
+ case DDF_RAID0:
+ case DDF_CONCAT:
+ case DDF_JBOD:
+ state = DDF_state_failed;
+ break;
+ case DDF_RAID1:
+ if (working == 0)
+ state = DDF_state_failed;
+ break;
+ case DDF_RAID4:
+ case DDF_RAID5:
+ if (working < a->info.array.raid_disks-1)
+ state = DDF_state_failed;
+ break;
+ case DDF_RAID6:
+ if (working < a->info.array.raid_disks-2)
+ state = DDF_state_failed;
+ else if (working == a->info.array.raid_disks-1)
+ state = DDF_state_part_optimal;
+ break;
+ }
+
+ if (ddf->virt->entries[inst].state !=
+ ((ddf->virt->entries[inst].state & ~DDF_state_mask)
+ | state)) {
+
+ ddf->virt->entries[inst].state =
+ (ddf->virt->entries[inst].state & ~DDF_state_mask)
+ | state;
+ ddf->updates_pending = 1;
+ }
+
+}
+
+static void ddf_sync_metadata(struct supertype *st)
+{
+
+ /*
+ * Write all data to all devices.
+ * Later, we might be able to track whether only local changes
+ * have been made, or whether any global data has been changed,
+ * but ddf is sufficiently weird that it probably always
+ * changes global data ....
+ */
+ struct ddf_super *ddf = st->sb;
+ if (!ddf->updates_pending)
+ return;
+ ddf->updates_pending = 0;
+ __write_init_super_ddf(st, 0);
+ dprintf("ddf: sync_metadata\n");
+}
+
+static void ddf_process_update(struct supertype *st,
+ struct metadata_update *update)
+{
+ /* Apply this update to the metadata.
+ * The first 4 bytes are a DDF_*_MAGIC which guides
+ * our actions.
+ * Possible update are:
+ * DDF_PHYS_RECORDS_MAGIC
+ * Add a new physical device. Changes to this record
+ * only happen implicitly.
+ * used_pdes is the device number.
+ * DDF_VIRT_RECORDS_MAGIC
+ * Add a new VD. Possibly also change the 'access' bits.
+ * populated_vdes is the entry number.
+ * DDF_VD_CONF_MAGIC
+ * New or updated VD. the VIRT_RECORD must already
+ * exist. For an update, phys_refnum and lba_offset
+ * (at least) are updated, and the VD_CONF must
+ * be written to precisely those devices listed with
+ * a phys_refnum.
+ * DDF_SPARE_ASSIGN_MAGIC
+ * replacement Spare Assignment Record... but for which device?
+ *
+ * So, e.g.:
+ * - to create a new array, we send a VIRT_RECORD and
+ * a VD_CONF. Then assemble and start the array.
+ * - to activate a spare we send a VD_CONF to add the phys_refnum
+ * and offset. This will also mark the spare as active with
+ * a spare-assignment record.
+ */
+ struct ddf_super *ddf = st->sb;
+ __u32 *magic = (__u32*)update->buf;
+ struct phys_disk *pd;
+ struct virtual_disk *vd;
+ struct vd_config *vc;
+ struct vcl *vcl;
+ struct dl *dl;
+ int mppe;
+ int ent;
+
+ dprintf("Process update %x\n", *magic);
+
+ switch (*magic) {
+ case DDF_PHYS_RECORDS_MAGIC:
+
+ if (update->len != (sizeof(struct phys_disk) +
+ sizeof(struct phys_disk_entry)))
+ return;
+ pd = (struct phys_disk*)update->buf;
+
+ ent = __be16_to_cpu(pd->used_pdes);
+ if (ent >= __be16_to_cpu(ddf->phys->max_pdes))
+ return;
+ if (!all_ff(ddf->phys->entries[ent].guid))
+ return;
+ ddf->phys->entries[ent] = pd->entries[0];
+ ddf->phys->used_pdes = __cpu_to_be16(1 +
+ __be16_to_cpu(ddf->phys->used_pdes));
+ ddf->updates_pending = 1;
+ if (ddf->add_list) {
+ struct active_array *a;
+ struct dl *al = ddf->add_list;
+ ddf->add_list = al->next;
+
+ al->next = ddf->dlist;
+ ddf->dlist = al;
+
+ /* As a device has been added, we should check
+ * for any degraded devices that might make
+ * use of this spare */
+ for (a = st->arrays ; a; a=a->next)
+ a->check_degraded = 1;
+ }
+ break;
+
+ case DDF_VIRT_RECORDS_MAGIC:
+
+ if (update->len != (sizeof(struct virtual_disk) +
+ sizeof(struct virtual_entry)))
+ return;
+ vd = (struct virtual_disk*)update->buf;
+
+ ent = __be16_to_cpu(vd->populated_vdes);
+ if (ent >= __be16_to_cpu(ddf->virt->max_vdes))
+ return;
+ if (!all_ff(ddf->virt->entries[ent].guid))
+ return;
+ ddf->virt->entries[ent] = vd->entries[0];
+ ddf->virt->populated_vdes = __cpu_to_be16(1 +
+ __be16_to_cpu(ddf->virt->populated_vdes));
+ ddf->updates_pending = 1;
+ break;
+
+ case DDF_VD_CONF_MAGIC:
+ dprintf("len %d %d\n", update->len, ddf->conf_rec_len);
+
+ mppe = __be16_to_cpu(ddf->anchor.max_primary_element_entries);
+ if (update->len != ddf->conf_rec_len * 512)
+ return;
+ vc = (struct vd_config*)update->buf;
+ for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
+ if (memcmp(vcl->conf.guid, vc->guid, DDF_GUID_LEN) == 0)
+ break;
+ dprintf("vcl = %p\n", vcl);
+ if (vcl) {
+ /* An update, just copy the phys_refnum and lba_offset
+ * fields
+ */
+ memcpy(vcl->conf.phys_refnum, vc->phys_refnum,
+ mppe * (sizeof(__u32) + sizeof(__u64)));
+ } else {
+ /* A new VD_CONF */
+ vcl = update->space;
+ update->space = NULL;
+ vcl->next = ddf->conflist;
+ memcpy(&vcl->conf, vc, update->len);
+ vcl->lba_offset = (__u64*)
+ &vcl->conf.phys_refnum[mppe];
+ ddf->conflist = vcl;
+ }
+ /* Now make sure vlist is correct for each dl. */
+ for (dl = ddf->dlist; dl; dl = dl->next) {
+ int dn;
+ int vn = 0;
+ for (vcl = ddf->conflist; vcl ; vcl = vcl->next)
+ for (dn=0; dn < ddf->mppe ; dn++)
+ if (vcl->conf.phys_refnum[dn] ==
+ dl->disk.refnum) {
+ dprintf("dev %d has %p at %d\n",
+ dl->pdnum, vcl, vn);
+ dl->vlist[vn++] = vcl;
+ break;
+ }
+ while (vn < ddf->max_part)
+ dl->vlist[vn++] = NULL;
+ if (dl->vlist[0]) {
+ ddf->phys->entries[dl->pdnum].type &=
+ ~__cpu_to_be16(DDF_Global_Spare);
+ ddf->phys->entries[dl->pdnum].type |=
+ __cpu_to_be16(DDF_Active_in_VD);
+ }
+ if (dl->spare) {
+ ddf->phys->entries[dl->pdnum].type &=
+ ~__cpu_to_be16(DDF_Global_Spare);
+ ddf->phys->entries[dl->pdnum].type |=
+ __cpu_to_be16(DDF_Spare);
+ }
+ if (!dl->vlist[0] && !dl->spare) {
+ ddf->phys->entries[dl->pdnum].type |=
+ __cpu_to_be16(DDF_Global_Spare);
+ ddf->phys->entries[dl->pdnum].type &=
+ ~__cpu_to_be16(DDF_Spare |
+ DDF_Active_in_VD);
+ }
+ }
+ ddf->updates_pending = 1;
+ break;
+ case DDF_SPARE_ASSIGN_MAGIC:
+ default: break;
+ }
+}
+
+static void ddf_prepare_update(struct supertype *st,
+ struct metadata_update *update)
+{
+ /* This update arrived at managemon.
+ * We are about to pass it to monitor.
+ * If a malloc is needed, do it here.
+ */
+ struct ddf_super *ddf = st->sb;
+ __u32 *magic = (__u32*)update->buf;
+ if (*magic == DDF_VD_CONF_MAGIC)
+ posix_memalign(&update->space, 512,
+ offsetof(struct vcl, conf)
+ + ddf->conf_rec_len * 512);
+}
+
+/*
+ * Check if the array 'a' is degraded but not failed.
+ * If it is, find as many spares as are available and needed and
+ * arrange for their inclusion.
+ * We only choose devices which are not already in the array,
+ * and prefer those with a spare-assignment to this array.
+ * otherwise we choose global spares - assuming always that
+ * there is enough room.
+ * For each spare that we assign, we return an 'mdinfo' which
+ * describes the position for the device in the array.
+ * We also add to 'updates' a DDF_VD_CONF_MAGIC update with
+ * the new phys_refnum and lba_offset values.
+ *
+ * Only worry about BVDs at the moment.
+ */
+static struct mdinfo *ddf_activate_spare(struct active_array *a,
+ struct metadata_update **updates)
+{
+ int working = 0;
+ struct mdinfo *d;
+ struct ddf_super *ddf = a->container->sb;
+ int global_ok = 0;
+ struct mdinfo *rv = NULL;
+ struct mdinfo *di;
+ struct metadata_update *mu;
+ struct dl *dl;
+ int i;
+ struct vd_config *vc;
+ __u64 *lba;
+
+ for (d = a->info.devs ; d ; d = d->next) {
+ if ((d->curr_state & DS_FAULTY) &&
+ d->state_fd >= 0)
+ /* wait for Removal to happen */
+ return NULL;
+ if (d->state_fd >= 0)
+ working ++;
+ }
+
+ dprintf("ddf_activate: working=%d (%d) level=%d\n", working, a->info.array.raid_disks,
+ a->info.array.level);
+ if (working == a->info.array.raid_disks)
+ return NULL; /* array not degraded */
+ switch (a->info.array.level) {
+ case 1:
+ if (working == 0)
+ return NULL; /* failed */
+ break;
+ case 4:
+ case 5:
+ if (working < a->info.array.raid_disks - 1)
+ return NULL; /* failed */
+ break;
+ case 6:
+ if (working < a->info.array.raid_disks - 2)
+ return NULL; /* failed */
+ break;
+ default: /* concat or stripe */
+ return NULL; /* failed */
+ }
+
+ /* For each slot, if it is not working, find a spare */
+ dl = ddf->dlist;
+ for (i = 0; i < a->info.array.raid_disks; i++) {
+ for (d = a->info.devs ; d ; d = d->next)
+ if (d->disk.raid_disk == i)
+ break;
+ dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
+ if (d && (d->state_fd >= 0))
+ continue;
+
+ /* OK, this device needs recovery. Find a spare */
+ again:
+ for ( ; dl ; dl = dl->next) {
+ unsigned long long esize;
+ unsigned long long pos;
+ struct mdinfo *d2;
+ int is_global = 0;
+ int is_dedicated = 0;
+ struct extent *ex;
+ int j;
+ /* If in this array, skip */
+ for (d2 = a->info.devs ; d2 ; d2 = d2->next)
+ if (d2->disk.major == dl->major &&
+ d2->disk.minor == dl->minor) {
+ dprintf("%x:%x already in array\n", dl->major, dl->minor);
+ break;
+ }
+ if (d2)
+ continue;
+ if (ddf->phys->entries[dl->pdnum].type &
+ __cpu_to_be16(DDF_Spare)) {
+ /* Check spare assign record */
+ if (dl->spare) {
+ if (dl->spare->type & DDF_spare_dedicated) {
+ /* check spare_ents for guid */
+ for (j = 0 ;
+ j < __be16_to_cpu(dl->spare->populated);
+ j++) {
+ if (memcmp(dl->spare->spare_ents[j].guid,
+ ddf->virt->entries[a->info.container_member].guid,
+ DDF_GUID_LEN) == 0)
+ is_dedicated = 1;
+ }
+ } else
+ is_global = 1;
+ }
+ } else if (ddf->phys->entries[dl->pdnum].type &
+ __cpu_to_be16(DDF_Global_Spare)) {
+ is_global = 1;
+ }
+ if ( ! (is_dedicated ||
+ (is_global && global_ok))) {
+ dprintf("%x:%x not suitable: %d %d\n", dl->major, dl->minor,
+ is_dedicated, is_global);
+ continue;
+ }
+
+ /* We are allowed to use this device - is there space?
+ * We need a->info.component_size sectors */
+ ex = get_extents(ddf, dl);
+ if (!ex) {
+ dprintf("cannot get extents\n");
+ continue;
+ }
+ j = 0; pos = 0;
+ esize = 0;
+
+ do {
+ esize = ex[j].start - pos;
+ if (esize >= a->info.component_size)
+ break;
+ pos = ex[i].start + ex[i].size;
+ i++;
+ } while (ex[i-1].size);
+
+ free(ex);
+ if (esize < a->info.component_size) {
+ dprintf("%x:%x has no room: %llu %llu\n", dl->major, dl->minor,
+ esize, a->info.component_size);
+ /* No room */
+ continue;
+ }
+
+ /* Cool, we have a device with some space at pos */
+ di = malloc(sizeof(*di));
+ memset(di, 0, sizeof(*di));
+ di->disk.number = i;
+ di->disk.raid_disk = i;
+ di->disk.major = dl->major;
+ di->disk.minor = dl->minor;
+ di->disk.state = 0;
+ di->data_offset = pos;
+ di->component_size = a->info.component_size;
+ di->container_member = dl->pdnum;
+ di->next = rv;
+ rv = di;
+ dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
+ i, pos);
+
+ break;
+ }
+ if (!dl && ! global_ok) {
+ /* not enough dedicated spares, try global */
+ global_ok = 1;
+ dl = ddf->dlist;
+ goto again;
+ }
+ }
+
+ if (!rv)
+ /* No spares found */
+ return rv;
+ /* Now 'rv' has a list of devices to return.
+ * Create a metadata_update record to update the
+ * phys_refnum and lba_offset values
+ */
+ mu = malloc(sizeof(*mu));
+ mu->buf = malloc(ddf->conf_rec_len * 512);
+ posix_memalign(&mu->space, 512, sizeof(struct vcl));
+ mu->len = ddf->conf_rec_len;
+ mu->next = *updates;
+ vc = find_vdcr(ddf, a->info.container_member);
+ memcpy(mu->buf, vc, ddf->conf_rec_len * 512);
+
+ vc = (struct vd_config*)mu->buf;
+ lba = (__u64*)&vc->phys_refnum[ddf->mppe];
+ for (di = rv ; di ; di = di->next) {
+ vc->phys_refnum[di->disk.raid_disk] =
+ ddf->phys->entries[dl->pdnum].refnum;
+ lba[di->disk.raid_disk] = di->data_offset;
+ }
+ *updates = mu;
+ return rv;
+}
+#endif /* MDASSEMBLE */
+
struct superswitch super_ddf = {
#ifndef MDASSEMBLE
.examine_super = examine_super_ddf,
.detail_super = detail_super_ddf,
.brief_detail_super = brief_detail_super_ddf,
.validate_geometry = validate_geometry_ddf,
+ .write_init_super = write_init_super_ddf,
+ .add_to_super = add_to_super_ddf,
#endif
.match_home = match_home_ddf,
.uuid_from_super= uuid_from_super_ddf,
.compare_super = compare_super_ddf,
.load_super = load_super_ddf,
- .init_super = init_zero_ddf,
+ .init_super = init_super_ddf,
.store_super = store_zero_ddf,
.free_super = free_super_ddf,
.match_metadata_desc = match_metadata_desc_ddf,
- .getinfo_super_n = getinfo_super_n_container,
-
-
- .major = 1000,
- .swapuuid = 0,
- .external = 1,
- .text_version = "ddf",
-};
-
-/* Super_ddf_container is set by validate_geometry_ddf when given a
- * device that is not part of any array
- */
-struct superswitch super_ddf_container = {
-#ifndef MDASSEMBLE
- .validate_geometry = validate_geometry_ddf_container,
- .write_init_super = write_init_super_ddf,
-#endif
-
- .init_super = init_super_ddf,
- .add_to_super = add_to_super_ddf,
-
- .free_super = free_super_ddf,
-
.container_content = container_content_ddf,
- .major = 1000,
- .swapuuid = 0,
.external = 1,
- .text_version = "ddf",
-};
-
-struct superswitch super_ddf_bvd = {
-#ifndef MDASSEMBLE
-// .detail_super = detail_super_ddf_bvd,
-// .brief_detail_super = brief_detail_super_ddf_bvd,
- .validate_geometry = validate_geometry_ddf_bvd,
- .write_init_super = write_init_super_ddf,
-#endif
- .update_super = update_super_ddf,
- .init_super = init_super_ddf_bvd,
- .add_to_super = add_to_super_ddf_bvd,
- .getinfo_super = getinfo_super_ddf_bvd,
- .getinfo_super_n = getinfo_super_n_bvd,
-
- .load_super = load_super_ddf,
- .free_super = free_super_ddf,
- .match_metadata_desc = match_metadata_desc_ddf_bvd,
-
- .major = 1001,
- .swapuuid = 0,
- .external = 2,
- .text_version = "ddf",
-};
-
-struct superswitch super_ddf_svd = {
-#ifndef MDASSEMBLE
-// .detail_super = detail_super_ddf_svd,
-// .brief_detail_super = brief_detail_super_ddf_svd,
- .validate_geometry = validate_geometry_ddf_svd,
+#ifndef MDASSEMBLE
+/* for mdmon */
+ .open_new = ddf_open_new,
+ .set_array_state= ddf_set_array_state,
+ .set_disk = ddf_set_disk,
+ .sync_metadata = ddf_sync_metadata,
+ .process_update = ddf_process_update,
+ .prepare_update = ddf_prepare_update,
+ .activate_spare = ddf_activate_spare,
#endif
- .update_super = update_super_ddf,
- .init_super = init_super_ddf,
-
- .load_super = load_super_ddf,
- .free_super = free_super_ddf,
- .match_metadata_desc = match_metadata_desc_ddf_svd,
-
- .major = 1002,
- .swapuuid = 0,
- .external = 2,
- .text_version = "ddf",
};
projects / thirdparty / mdadm.git / blobdiff