#define MPB_VERSION_RAID5 "1.2.02"
#define MAX_SIGNATURE_LENGTH 32
#define MAX_RAID_SERIAL_LEN 16
+#define MPB_SECTOR_CNT 418
+#define IMSM_RESERVED_SECTORS 4096
/* Disk configuration info. */
#define IMSM_MAX_DEVICES 255
static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" };
#endif
-static unsigned long long mpb_sectors(struct imsm_super *mpb)
+static unsigned int sector_count(__u32 bytes)
{
- __u32 size = __le32_to_cpu(mpb->mpb_size);
+ return ((bytes + (512-1)) & (~(512-1))) / 512;
+}
- return ((size + (512-1)) & (~(512-1))) / 512;
+static unsigned int mpb_sectors(struct imsm_super *mpb)
+{
+ return sector_count(__le32_to_cpu(mpb->mpb_size));
}
+static struct superswitch super_imsm_volume;
+
/* internal representation of IMSM metadata */
struct intel_super {
union {
struct imsm_super *mpb;
void *buf;
};
- int updates_pending;
+ int updates_pending; /* count of pending updates for mdmon */
+ int creating_imsm; /* flag to indicate container creation */
+ int creating_dev; /* index of raid device undergoing creation */
struct dl {
struct dl *next;
int index;
} *disks;
};
+struct extent {
+ unsigned long long start, size;
+};
+
static struct supertype *match_metadata_desc_imsm(char *arg)
{
struct supertype *st;
return NULL;
st = malloc(sizeof(*st));
+ memset(st, 0, sizeof(*st));
st->ss = &super_imsm;
st->max_devs = IMSM_MAX_DEVICES;
st->minor_version = 0;
return st;
}
-static struct supertype *match_metadata_desc_imsm_raid(char *arg)
+static struct supertype *match_metadata_desc_imsm_volume(char *arg)
{
struct supertype *st;
- if (strcmp(arg, "imsm/raid") != 0 &&
+ if (strcmp(arg, "imsm/volume") != 0 &&
strcmp(arg, "raid") != 0 &&
strcmp(arg, "default") != 0
)
return NULL;
st = malloc(sizeof(*st));
- st->ss = &super_imsm_raid;
+ memset(st, 0, sizeof(*st));
+ st->ss = &super_imsm_volume;
st->max_devs = IMSM_MAX_DEVICES;
st->minor_version = 0;
st->sb = NULL;
return map->raid_level;
}
+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 intel_super *super, struct dl *dl)
+{
+ /* find a list of used extents on the given physical device */
+ struct imsm_super *mpb = super->mpb;
+ struct imsm_disk *disk;
+ struct extent *rv, *e;
+ int i, j;
+ int memberships = 0;
+
+ disk = get_imsm_disk(mpb, dl->index);
+ if (!disk)
+ return NULL;
+
+ for (i = 0; i < mpb->num_raid_devs; i++) {
+ struct imsm_dev *dev = get_imsm_dev(mpb, i);
+ struct imsm_map *map = dev->vol.map;
+
+ for (j = 0; j < map->num_members; j++) {
+ __u32 index = get_imsm_disk_idx(map, j);
+
+ if (index == dl->index)
+ memberships++;
+ }
+ }
+ rv = malloc(sizeof(struct extent) * (memberships + 1));
+ if (!rv)
+ return NULL;
+ e = rv;
+
+ for (i = 0; i < mpb->num_raid_devs; i++) {
+ struct imsm_dev *dev = get_imsm_dev(mpb, i);
+ struct imsm_map *map = dev->vol.map;
+
+ for (j = 0; j < map->num_members; j++) {
+ __u32 index = get_imsm_disk_idx(map, j);
+
+ if (index == dl->index) {
+ e->start = __le32_to_cpu(map->pba_of_lba0);
+ e->size = __le32_to_cpu(map->blocks_per_member);
+ e++;
+ }
+ }
+ }
+ qsort(rv, memberships, sizeof(*rv), cmp_extent);
+
+ e->start = __le32_to_cpu(disk->total_blocks) -
+ (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
+ e->size = 0;
+ return rv;
+}
+
#ifndef MDASSEMBLE
static void print_imsm_dev(struct imsm_dev *dev, int index)
{
s&FAILED_DISK ? " failed" : "",
s&USABLE_DISK ? " usable" : "");
printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id));
- sz = __le32_to_cpu(disk->total_blocks) - mpb_sectors(mpb);
+ sz = __le32_to_cpu(disk->total_blocks) -
+ (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS * mpb->num_raid_devs);
printf(" Usable Size : %llu%s\n", (unsigned long long)sz,
human_size(sz * 512));
}
sum = __le32_to_cpu(mpb->check_sum);
printf(" Checksum : %08x %s\n", sum,
gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect");
+ printf(" MPB Sectors : %d\n", mpb_sectors(mpb));
printf(" Disks : %d\n", mpb->num_disks);
printf(" RAID Devices : %d\n", mpb->num_raid_devs);
print_imsm_disk(mpb, super->disks->index);
printf("%s\n", __FUNCTION__);
}
+#if 0
static void
get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p)
{
*m = strtol(minor, NULL, 0);
*p = strtol(patch, NULL, 0);
}
+#endif
+
+static int imsm_level_to_layout(int level)
+{
+ switch (level) {
+ case 0:
+ case 1:
+ return 0;
+ case 5:
+ case 6:
+ return ALGORITHM_LEFT_SYMMETRIC;
+ case 10:
+ return 0x102; //FIXME is this correct?
+ }
+ return -1;
+}
static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info)
{
struct intel_super *super = st->sb;
struct imsm_super *mpb = super->mpb;
struct imsm_disk *disk;
+ int sect = mpb_sectors(mpb);
__u32 s;
- int i, j;
- info->array.major_version = 2000;
- get_imsm_numerical_version(mpb, &info->array.minor_version,
- &info->array.patch_version);
info->array.raid_disks = mpb->num_disks;
info->array.level = LEVEL_CONTAINER;
info->array.layout = 0;
info->array.md_minor = -1;
- info->array.ctime = __le32_to_cpu(mpb->generation_num); //??
+ info->array.ctime = 0; /* N/A for imsm */
info->array.utime = 0;
info->array.chunk_size = 0;
info->disk.major = 0;
info->disk.minor = 0;
- info->disk.number = super->disks->index;
info->disk.raid_disk = -1;
- /* is this disk a member of a raid device? */
- for (i = 0; i < mpb->num_raid_devs; i++) {
- struct imsm_dev *dev = get_imsm_dev(mpb, i);
- struct imsm_map *map = dev->vol.map;
+ info->reshape_active = 0;
+ strcpy(info->text_version, "imsm");
+ info->disk.number = -1;
+ info->disk.state = 0;
- for (j = 0; j < map->num_members; j++) {
- __u32 index = get_imsm_disk_idx(map, j);
+ info->data_offset = __le32_to_cpu(get_imsm_disk(super->mpb,
+ super->disks->index)
+ ->total_blocks) - (2 + sect - 1);
+ info->component_size = sect;
- if (index == super->disks->index) {
- info->disk.raid_disk = super->disks->index;
- break;
- }
- }
- if (info->disk.raid_disk != -1)
- break;
+ if (super->disks) {
+ info->disk.number = super->disks->index;
+ info->disk.raid_disk = super->disks->index;
+ disk = get_imsm_disk(mpb, super->disks->index);
+ s = __le32_to_cpu(disk->status);
+ info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0;
+ info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
+ info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0;
}
- disk = get_imsm_disk(mpb, super->disks->index);
- s = __le32_to_cpu(disk->status);
- info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0;
- info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
- info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0;
- info->reshape_active = 0;
-
- strcpy(info->text_version, "imsm");
}
-static void getinfo_super_imsm_raid(struct supertype *st, struct mdinfo *info)
+static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info)
{
- printf("%s\n", __FUNCTION__);
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct imsm_dev *dev = get_imsm_dev(mpb, info->container_member);
+ struct imsm_map *map = &dev->vol.map[0];
+
+ info->array.raid_disks = map->num_members;
+ info->array.level = get_imsm_raid_level(map);
+ info->array.layout = imsm_level_to_layout(info->array.level);
+ info->array.md_minor = -1;
+ info->array.ctime = 0;
+ info->array.utime = 0;
+ info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip * 512);
+
+ info->data_offset = __le32_to_cpu(map->pba_of_lba0);
+ info->component_size = __le32_to_cpu(map->blocks_per_member);
+
+ info->disk.major = 0;
+ info->disk.minor = 0;
sprintf(info->text_version, "/%s/%d",
devnum2devname(st->container_dev),
- info->container_member); // FIXME is this even set here?
+ info->container_member);
}
static int update_super_imsm(struct supertype *st, struct mdinfo *info,
return rv;
}
-static __u64 avail_size_imsm(struct supertype *st, __u64 size)
+static size_t disks_to_mpb_size(int disks)
{
- printf("%s\n", __FUNCTION__);
+ size_t size;
- return 0;
+ size = sizeof(struct imsm_super);
+ size += (disks - 1) * sizeof(struct imsm_disk);
+ size += 2 * sizeof(struct imsm_dev);
+ /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
+ size += (4 - 2) * sizeof(struct imsm_map);
+ /* 4 possible disk_ord_tbl's */
+ size += 4 * (disks - 1) * sizeof(__u32);
+
+ return size;
+}
+
+static __u64 avail_size_imsm(struct supertype *st, __u64 devsize)
+{
+ if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS))
+ return 0;
+
+ return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
}
static int compare_super_imsm(struct supertype *st, struct supertype *tst)
__u8 serial[MAX_RAID_SERIAL_LEN])
{
unsigned char scsi_serial[255];
- struct stat stb;
int sg_fd;
- int minor;
- char sg_path[20];
int rv;
int rsp_len;
int i, cnt;
memset(scsi_serial, 0, sizeof(scsi_serial));
- fstat(fd, &stb);
- minor = minor(stb.st_rdev);
- minor /= 16;
- sprintf(sg_path, "/dev/sg%d", minor);
- sg_fd = open(sg_path, O_RDONLY);
+ sg_fd = sysfs_disk_to_sg(fd);
if (sg_fd < 0) {
if (devname)
fprintf(stderr,
- Name ": Failed to open %s for %s: %s\n",
- sg_path, devname, strerror(errno));
+ Name ": Failed to open sg interface for %s: %s\n",
+ devname, strerror(errno));
return 1;
}
st->sb = NULL;
}
+static struct intel_super *alloc_super(int creating_imsm)
+{
+ struct intel_super *super = malloc(sizeof(*super));
+
+ if (super) {
+ memset(super, 0, sizeof(*super));
+ super->creating_imsm = creating_imsm;
+ super->creating_dev = -1;
+ }
+
+ return super;
+}
+
#ifndef MDASSEMBLE
static int load_super_imsm_all(struct supertype *st, int fd, void **sbp,
char *devname, int keep_fd)
strcmp(sra->text_version, "imsm") != 0)
return 1;
- super = malloc(sizeof(*super));
+ super = alloc_super(0);
if (!super)
return 1;
close(dfd);
}
+ if (st->subarray[0]) {
+ /* FIXME */
+ }
+
*sbp = super;
if (st->ss == NULL) {
st->ss = &super_imsm_container;
st->minor_version = 0;
st->max_devs = IMSM_MAX_DEVICES;
+ st->container_dev = fd2devnum(fd);
}
return 0;
if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0)
return 0;
#endif
+ if (st->subarray[0])
+ return 1; /* FIXME */
- super = malloc(sizeof(*super));
+ super = alloc_super(0);
if (!super) {
fprintf(stderr,
Name ": malloc of %zu failed.\n",
unsigned long long size, char *name,
char *homehost, int *uuid)
{
- printf("%s\n", __FUNCTION__);
-
+ st->sb = NULL;
return 0;
}
unsigned long long size, char *name,
char *homehost, int *uuid)
{
- printf("%s\n", __FUNCTION__);
+ /* This is primarily called by Create when creating a new array.
+ * We will then get add_to_super called for each component, and then
+ * write_init_super called to write it out to each device.
+ * For IMSM, Create can create on fresh devices or on a pre-existing
+ * array.
+ * To create on a pre-existing array a different method will be called.
+ * This one is just for fresh drives.
+ */
+ struct intel_super *super;
+ struct imsm_super *mpb;
+ size_t mpb_size;
- return 0;
+ super = alloc_super(1);
+ if (!super)
+ return 0;
+ mpb_size = disks_to_mpb_size(info->nr_disks);
+ mpb = malloc(mpb_size);
+ if (!mpb) {
+ free(super);
+ return 0;
+ }
+ memset(mpb, 0, mpb_size);
+
+ memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE));
+ memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5,
+ strlen(MPB_VERSION_RAID5));
+ mpb->mpb_size = mpb_size;
+
+ super->mpb = mpb;
+ st->sb = super;
+ return 1;
}
-static int init_super_imsm_raid(struct supertype *st, mdu_array_info_t *info,
- unsigned long long size, char *name,
- char *homehost, int *uuid)
+static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
+ unsigned long long size, char *name,
+ char *homehost, int *uuid)
{
- printf("%s\n", __FUNCTION__);
+ /* We are creating a volume inside a pre-existing container.
+ * so st->sb is already set.
+ */
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct imsm_dev *dev;
+ struct imsm_vol *vol;
+ struct imsm_map *map;
+ int idx = mpb->num_raid_devs;
+ int i;
+ unsigned long long array_blocks;
+ unsigned long long sz;
+ __u32 offset = 0;
- return 0;
+ if (mpb->num_raid_devs >= 2) {
+ fprintf(stderr, Name": This imsm-container already has the "
+ "maximum of 2 volumes\n");
+ return 0;
+ }
+
+ super->creating_dev = idx;
+ mpb->num_raid_devs++;
+ dev = get_imsm_dev(mpb, idx);
+ strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN);
+ array_blocks = calc_array_size(info->level, info->raid_disks,
+ info->layout, info->chunk_size,
+ info->size*2);
+ dev->size_low = __cpu_to_le32((__u32) array_blocks);
+ dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32));
+ dev->status = __cpu_to_le32(0);
+ dev->reserved_blocks = __cpu_to_le32(0);
+ vol = &dev->vol;
+ vol->migr_state = 0;
+ vol->migr_type = 0;
+ vol->dirty = 0;
+ for (i = 0; i < idx; i++) {
+ struct imsm_dev *prev = get_imsm_dev(mpb, i);
+ struct imsm_map *pmap = &prev->vol.map[0];
+
+ offset += __le32_to_cpu(pmap->blocks_per_member);
+ offset += IMSM_RESERVED_SECTORS;
+ }
+ map = &vol->map[0];
+ map->pba_of_lba0 = __cpu_to_le32(offset);
+ sz = info->size * 2;
+ map->blocks_per_member = __cpu_to_le32(sz);
+ map->blocks_per_strip = __cpu_to_le16(info->chunk_size >> 9);
+ map->num_data_stripes = __cpu_to_le32(sz / (info->chunk_size >> 9));
+ map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED :
+ IMSM_T_STATE_NORMAL;
+ if (info->level == 10)
+ map->raid_level = 1;
+ else
+ map->raid_level = info->level;
+ map->num_members = info->raid_disks;
+ for (i = 0; i < map->num_members; i++) {
+ /* initialized in add_to_super */
+ map->disk_ord_tbl[i] = __cpu_to_le32(0);
+ }
+
+ return 1;
}
-static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dinfo,
+static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
int fd, char *devname)
{
- printf("%s\n", __FUNCTION__);
-}
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct imsm_disk *disk;
+ struct dl *dd;
+ unsigned long long size;
+ __u32 status, id;
+ int rv;
+ struct stat stb;
-static void add_to_super_imsm_raid(struct supertype *st, mdu_disk_info_t *dinfo,
- int fd, char *devname)
-{
- printf("%s\n", __FUNCTION__);
-}
+ fstat(fd, &stb);
+ dd = malloc(sizeof(*dd));
+ if (!dd) {
+ fprintf(stderr,
+ Name ": malloc failed %s:%d.\n", __func__, __LINE__);
+ abort();
+ }
+ memset(dd, 0, sizeof(*dd));
+ dd->major = major(stb.st_rdev);
+ dd->minor = minor(stb.st_rdev);
+ dd->index = dk->number;
+ dd->devname = devname ? strdup(devname) : NULL;
+ dd->next = super->disks;
+ dd->fd = fd;
+ rv = imsm_read_serial(fd, devname, dd->serial);
+ if (rv) {
+ fprintf(stderr,
+ Name ": failed to retrieve scsi serial "
+ "using \'%s\' instead\n", devname);
+ strcpy((char *) dd->serial, devname);
+ }
-static int write_init_super_imsm(struct supertype *st)
-{
- printf("%s\n", __FUNCTION__);
+ if (mpb->num_disks <= dk->number)
+ mpb->num_disks = dk->number + 1;
+
+ disk = get_imsm_disk(mpb, dk->number);
+ get_dev_size(fd, NULL, &size);
+ size /= 512;
+ status = USABLE_DISK | SPARE_DISK;
+ strcpy((char *) disk->serial, (char *) dd->serial);
+ disk->total_blocks = __cpu_to_le32(size);
+ disk->status = __cpu_to_le32(status);
+ if (sysfs_disk_to_scsi_id(fd, &id) == 0)
+ disk->scsi_id = __cpu_to_le32(id);
+ else
+ disk->scsi_id = __cpu_to_le32(0);
- return 0;
+ /* update the family number if we are creating a container */
+ if (super->creating_imsm)
+ mpb->family_num = __cpu_to_le32(gen_imsm_checksum(mpb));
+
+ super->disks = dd;
}
-static int store_zero_imsm(struct supertype *st, int fd)
+static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
+ int fd, char *devname)
{
- printf("%s\n", __FUNCTION__);
+ struct intel_super *super = st->sb;
+ struct imsm_super *mpb = super->mpb;
+ struct dl *dl;
+ struct imsm_dev *dev;
+ struct imsm_map *map;
+ struct imsm_disk *disk;
+ __u32 status;
- return 0;
+ if (super->creating_dev == -1) {
+ fprintf(stderr, Name ": no active raid device\n");
+ abort();
+ }
+
+ dev = get_imsm_dev(mpb, super->creating_dev);
+ map = &dev->vol.map[0];
+
+ for (dl = super->disks; dl ; dl = dl->next)
+ if (dl->major == dk->major &&
+ dl->minor == dk->minor)
+ break;
+ if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
+ return;
+
+ map->disk_ord_tbl[dk->number] = __cpu_to_le32(dl->index);
+
+ disk = get_imsm_disk(mpb, dl->index);
+ status = CONFIGURED_DISK | USABLE_DISK;
+ disk->status = __cpu_to_le32(status);
}
-static void getinfo_super_n_imsm_container(struct supertype *st, struct mdinfo *info)
+static int store_imsm_mpb(int fd, struct intel_super *super);
+
+static int write_super_imsm(struct intel_super *super, int doclose)
{
- /* just need offset and size...
- * of the metadata??
- */
- struct intel_super *super = st->sb;
struct imsm_super *mpb = super->mpb;
- struct imsm_disk *disk = get_imsm_disk(mpb, info->disk.number);
- int sect = mpb_sectors(mpb);
+ struct dl *d;
+ __u32 generation;
+ __u32 sum;
- info->data_offset = __le32_to_cpu(disk->total_blocks) - (2 + sect - 1);
- info->component_size = sect;
+ /* 'generation' is incremented everytime the metadata is written */
+ generation = __le32_to_cpu(mpb->generation_num);
+ generation++;
+ mpb->generation_num = __cpu_to_le32(generation);
+
+ /* recalculate checksum */
+ sum = gen_imsm_checksum(mpb);
+ mpb->check_sum = __cpu_to_le32(sum);
+
+ for (d = super->disks; d ; d = d->next) {
+ if (store_imsm_mpb(d->fd, super)) {
+ fprintf(stderr, "%s: failed for device %d:%d %s\n",
+ __func__, d->major, d->minor, strerror(errno));
+ return 0;
+ }
+ if (doclose) {
+ close(d->fd);
+ d->fd = -1;
+ }
+ }
+
+ return 1;
}
-static void getinfo_super_n_raid(struct supertype *st, struct mdinfo *info)
+static int write_init_super_imsm(struct supertype *st)
{
- printf("%s\n", __FUNCTION__);
+ return write_super_imsm(st->sb, 1);
+}
+
+static int store_zero_imsm(struct supertype *st, int fd)
+{
+ unsigned long long dsize;
+ char buf[512];
+
+ get_dev_size(fd, NULL, &dsize);
+
+ /* first block is stored on second to last sector of the disk */
+ if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0)
+ return 1;
+
+ memset(buf, 0, sizeof(buf));
+ if (write(fd, buf, sizeof(buf)) != sizeof(buf))
+ return 1;
+ return 0;
}
static int validate_geometry_imsm(struct supertype *st, int level, int layout,
int raiddisks, int chunk, unsigned long long size,
- char *subdev, unsigned long long *freesize)
+ char *dev, unsigned long long *freesize)
{
- printf("%s\n", __FUNCTION__);
+ int fd, cfd;
+ struct mdinfo *sra;
- return 0;
+ /* if given unused devices create a container
+ * if given given devices in a container create a member volume
+ */
+ if (level == LEVEL_CONTAINER) {
+ st->ss = &super_imsm_container;
+ if (dev) {
+ /* validate the container, dev == NULL */
+ 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);
+ }
+
+ if (st->sb) {
+ /* creating in a given container */
+ st->ss = &super_imsm_volume;
+ 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);
+ }
+
+ /* limit creation to the following levels */
+ if (!dev)
+ switch (level) {
+ case 0:
+ case 1:
+ case 10:
+ case 5:
+ break;
+ default:
+ return 1;
+ }
+
+ /* This device needs to be a device in an 'imsm' container */
+ fd = open(dev, O_RDONLY|O_EXCL, 0);
+ if (fd >= 0) {
+ fprintf(stderr,
+ Name ": Cannot create this array on device %s\n",
+ dev);
+ close(fd);
+ return 0;
+ }
+ if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
+ fprintf(stderr, Name ": Cannot open %s: %s\n",
+ dev, strerror(errno));
+ return 0;
+ }
+ /* Well, it is in use by someone, maybe an 'imsm' container. */
+ cfd = open_container(fd);
+ if (cfd < 0) {
+ close(fd);
+ fprintf(stderr, Name ": Cannot use %s: It is busy\n",
+ dev);
+ return 0;
+ }
+ sra = sysfs_read(cfd, 0, GET_VERSION);
+ close(fd);
+ if (sra && sra->array.major_version == -1 &&
+ strcmp(sra->text_version, "imsm") == 0) {
+ /* This is a member of a imsm container. Load the container
+ * and try to create a volume
+ */
+ struct intel_super *super;
+ st->ss = &super_imsm_volume;
+ if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) {
+ st->sb = super;
+ st->container_dev = fd2devnum(cfd);
+ close(cfd);
+ return st->ss->validate_geometry(st, level, layout,
+ raiddisks, chunk, size,
+ dev, freesize);
+ }
+ close(cfd);
+ } else /* may belong to another container */
+ return 0;
+
+ return 1;
}
static int validate_geometry_imsm_container(struct supertype *st, int level,
int layout, int raiddisks, int chunk,
- unsigned long long size, char *subdev,
+ unsigned long long size, char *dev,
unsigned long long *freesize)
{
- printf("%s\n", __FUNCTION__);
+ int fd;
+ unsigned long long ldsize;
- return 0;
+ if (level != LEVEL_CONTAINER)
+ return 0;
+ if (!dev)
+ return 1;
+
+ fd = open(dev, O_RDONLY|O_EXCL, 0);
+ if (fd < 0) {
+ fprintf(stderr, Name ": Cannot open %s: %s\n",
+ dev, strerror(errno));
+ return 0;
+ }
+ if (!get_dev_size(fd, dev, &ldsize)) {
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ *freesize = avail_size_imsm(st, ldsize >> 9);
+
+ return 1;
}
-static int validate_geometry_imsm_raid(struct supertype *st, int level,
- int layout, int raiddisks, int chunk,
- unsigned long long size, char *subdev,
- unsigned long long *freesize)
+/* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
+ * FIX ME add ahci details
+ */
+static int validate_geometry_imsm_volume(struct supertype *st, int level,
+ int layout, int raiddisks, int chunk,
+ unsigned long long size, char *dev,
+ unsigned long long *freesize)
{
- printf("%s\n", __FUNCTION__);
+ struct stat stb;
+ struct intel_super *super = st->sb;
+ struct dl *dl;
+ unsigned long long pos = 0;
+ unsigned long long maxsize;
+ struct extent *e;
+ int i;
- return 0;
+ if (level == LEVEL_CONTAINER)
+ return 0;
+
+ if (level == 1 && raiddisks > 2) {
+ fprintf(stderr, Name ": imsm does not support more than 2 "
+ "in a raid1 configuration\n");
+ return 0;
+ }
+
+ /* We must have the container info already read in. */
+ if (!super)
+ return 0;
+
+ if (!dev) {
+ /* General test: make sure there is space for
+ * 'raiddisks' device extents of size 'size'.
+ */
+ unsigned long long minsize = size*2 /* convert to blocks */;
+ int dcnt = 0;
+ if (minsize == 0)
+ minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
+ for (dl = super->disks; dl ; dl = dl->next) {
+ int found = 0;
+
+ i = 0;
+ e = get_extents(super, dl);
+ if (!e) continue;
+ do {
+ unsigned long long esize;
+ esize = e[i].start - pos;
+ if (esize >= minsize)
+ found = 1;
+ pos = e[i].start + e[i].size;
+ i++;
+ } while (e[i-1].size);
+ if (found)
+ dcnt++;
+ free(e);
+ }
+ if (dcnt < raiddisks) {
+ fprintf(stderr, Name ": Not enough devices with space "
+ "for this array (%d < %d)\n",
+ dcnt, raiddisks);
+ return 0;
+ }
+ return 1;
+ }
+ /* This device must be a member of the set */
+ if (stat(dev, &stb) < 0)
+ return 0;
+ if ((S_IFMT & stb.st_mode) != S_IFBLK)
+ return 0;
+ for (dl = super->disks ; dl ; dl = dl->next) {
+ if (dl->major == major(stb.st_rdev) &&
+ dl->minor == minor(stb.st_rdev))
+ break;
+ }
+ if (!dl) {
+ fprintf(stderr, Name ": %s is not in the same imsm set\n",
+ dev);
+ return 0;
+ }
+ e = get_extents(super, dl);
+ maxsize = 0;
+ i = 0;
+ if (e) do {
+ unsigned long long esize;
+ esize = e[i].start - pos;
+ if (esize >= maxsize)
+ maxsize = esize;
+ pos = e[i].start + e[i].size;
+ i++;
+ } while (e[i-1].size);
+ *freesize = maxsize;
+
+ return 1;
}
static struct mdinfo *container_content_imsm(struct supertype *st)
this->next = rest;
rest = this;
- this->array.major_version = 2000;
- get_imsm_numerical_version(mpb, &this->array.minor_version,
- &this->array.patch_version);
this->array.level = get_imsm_raid_level(map);
this->array.raid_disks = map->num_members;
- switch(this->array.level) {
- case 0:
- case 1:
- this->array.layout = 0;
- break;
- case 5:
- case 6:
- this->array.layout = ALGORITHM_LEFT_SYMMETRIC;
- break;
- case 10:
- this->array.layout = 0x102; //FIXME is this correct?
- break;
- default:
- this->array.layout = -1; // FIXME
- }
+ this->array.layout = imsm_level_to_layout(this->array.level);
this->array.md_minor = -1;
this->array.ctime = 0;
this->array.utime = 0;
static int imsm_open_new(struct supertype *c, struct active_array *a,
char *inst)
{
- fprintf(stderr, "imsm: open_new %s\n", inst);
+ dprintf("imsm: open_new %s\n", inst);
a->info.container_member = atoi(inst);
return 0;
}
-static void imsm_set_array_state(struct active_array *a, int consistent)
-{
- int inst = a->info.container_member;
- struct intel_super *super = a->container->sb;
- struct imsm_dev *dev = get_imsm_dev(super->mpb, inst);
- int dirty = !consistent || (a->resync_start != ~0ULL);
-
- if (dev->vol.dirty != dirty) {
- fprintf(stderr, "imsm: mark '%s' (%llu)\n",
- dirty?"dirty":"clean", a->resync_start);
-
- dev->vol.dirty = dirty;
- super->updates_pending++;
- }
-}
-
static __u8 imsm_check_degraded(struct imsm_super *mpb, int n, int failed)
{
struct imsm_dev *dev = get_imsm_dev(mpb, n);
return failed;
}
+static void imsm_set_array_state(struct active_array *a, int consistent)
+{
+ int inst = a->info.container_member;
+ struct intel_super *super = a->container->sb;
+ struct imsm_dev *dev = get_imsm_dev(super->mpb, inst);
+ struct imsm_map *map = &dev->vol.map[0];
+ int dirty = !consistent;
+ int failed;
+ __u8 map_state;
+
+ if (a->resync_start == ~0ULL) {
+ failed = imsm_count_failed(super->mpb, map);
+ map_state = imsm_check_degraded(super->mpb, inst, failed);
+ if (!failed)
+ map_state = IMSM_T_STATE_NORMAL;
+ if (map->map_state != map_state) {
+ dprintf("imsm: map_state %d: %d\n",
+ inst, map_state);
+ map->map_state = map_state;
+ super->updates_pending++;
+ }
+ }
+
+ if (dev->vol.dirty != dirty) {
+ dprintf("imsm: mark '%s' (%llu)\n",
+ dirty?"dirty":"clean", a->resync_start);
+
+ dev->vol.dirty = dirty;
+ super->updates_pending++;
+ }
+}
+
static void imsm_set_disk(struct active_array *a, int n, int state)
{
int inst = a->info.container_member;
if (n < 0)
return;
- fprintf(stderr, "imsm: set_disk %d:%x\n", n, state);
+ dprintf("imsm: set_disk %d:%x\n", n, state);
disk = get_imsm_disk(super->mpb, get_imsm_disk_idx(map, n));
get_dev_size(fd, NULL, &dsize);
- /* first block is stored on second to last sector of the disk */
- if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0)
- return 1;
-
- if (write(fd, super->buf, 512) != 512)
- return 1;
+ if (mpb_size > 512) {
+ /* -1 to account for anchor */
+ sectors = mpb_sectors(mpb) - 1;
- if (mpb_size <= 512)
- return 0;
+ /* write the extended mpb to the sectors preceeding the anchor */
+ if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0)
+ return 1;
- /* -1 because we already wrote a sector */
- sectors = mpb_sectors(mpb) - 1;
+ if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512)
+ return 1;
+ }
- /* write the extended mpb to the sectors preceeding the anchor */
- if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0)
+ /* first block is stored on second to last sector of the disk */
+ if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0)
return 1;
- if (write(fd, super->buf + 512, mpb_size - 512) != mpb_size - 512)
+ if (write(fd, super->buf, 512) != 512)
return 1;
fsync(fd);
return 0;
}
-static void imsm_sync_metadata(struct active_array *a)
+static void imsm_sync_metadata(struct supertype *container)
{
- struct intel_super *super = a->container->sb;
- struct imsm_super *mpb = super->mpb;
- struct dl *d;
- __u32 generation;
- __u32 sum;
+ struct intel_super *super = container->sb;
if (!super->updates_pending)
return;
- fprintf(stderr, "imsm: sync_metadata\n");
-
- /* 'generation' is incremented everytime the metadata is written */
- generation = __le32_to_cpu(mpb->generation_num);
- generation++;
- mpb->generation_num = __cpu_to_le32(generation);
-
- /* recalculate checksum */
- sum = gen_imsm_checksum(mpb);
- mpb->check_sum = __cpu_to_le32(sum);
-
- for (d = super->disks; d ; d = d->next)
- if (store_imsm_mpb(d->fd, super))
- fprintf(stderr, "%s: failed for device %d:%d %s\n",
- __func__, d->major, d->minor, strerror(errno));
+ write_super_imsm(super, 0);
super->updates_pending = 0;
}
.store_super = store_zero_imsm,
.free_super = free_super_imsm,
.match_metadata_desc = match_metadata_desc_imsm,
- .getinfo_super_n = getinfo_super_n_imsm_container,
.validate_geometry = validate_geometry_imsm,
- .major = 2000,
- .swapuuid = 0,
.external = 1,
/* for mdmon */
.add_to_super = add_to_super_imsm,
.write_init_super = write_init_super_imsm,
.getinfo_super = getinfo_super_imsm,
- .getinfo_super_n = getinfo_super_n_imsm_container,
.load_super = load_super_imsm,
#ifndef MDASSEMBLE
.container_content = container_content_imsm,
- .major = 2000,
- .swapuuid = 0,
.external = 1,
};
-struct superswitch super_imsm_raid = {
+static struct superswitch super_imsm_volume = {
.update_super = update_super_imsm,
- .init_super = init_super_imsm_raid,
- .add_to_super = add_to_super_imsm_raid,
- .getinfo_super = getinfo_super_imsm_raid,
- .getinfo_super_n = getinfo_super_n_raid,
+ .init_super = init_super_imsm_volume,
+ .add_to_super = add_to_super_imsm_volume,
+ .getinfo_super = getinfo_super_imsm_volume,
.write_init_super = write_init_super_imsm,
.load_super = load_super_imsm,
.free_super = free_super_imsm,
- .match_metadata_desc = match_metadata_desc_imsm_raid,
+ .match_metadata_desc = match_metadata_desc_imsm_volume,
- .validate_geometry = validate_geometry_imsm_raid,
- .major = 2001,
- .swapuuid = 0,
+ .validate_geometry = validate_geometry_imsm_volume,
.external = 2,
};
projects / thirdparty / mdadm.git / blobdiff