#include "mdadm.h"
#include "mdmon.h"
#include "sha1.h"
+#include "platform-intel.h"
#include <values.h>
#include <scsi/sg.h>
#include <ctype.h>
+#include <dirent.h>
/* MPB == Metadata Parameter Block */
#define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
int updates_pending; /* count of pending updates for mdmon */
int creating_imsm; /* flag to indicate container creation */
int current_vol; /* index of raid device undergoing creation */
+ __u32 create_offset; /* common start for 'current_vol' */
#define IMSM_MAX_RAID_DEVS 2
struct imsm_dev *dev_tbl[IMSM_MAX_RAID_DEVS];
struct dl {
char *devname;
struct imsm_disk disk;
int fd;
+ int extent_cnt;
+ struct extent *e; /* for determining freespace @ create */
} *disks;
struct dl *add; /* list of disks to add while mdmon active */
struct dl *missing; /* disks removed while we weren't looking */
struct bbm_log *bbm_log;
+ const char *hba; /* device path of the raid controller for this metadata */
+ const struct imsm_orom *orom; /* platform firmware support */
};
struct extent {
struct imsm_update_activate_spare *next;
};
+struct disk_info {
+ __u8 serial[MAX_RAID_SERIAL_LEN];
+};
+
struct imsm_update_create_array {
enum imsm_update_type type;
int dev_idx;
return size;
}
+#ifndef MDASSEMBLE
+/* retrieve disk serial number list from a metadata update */
+static struct disk_info *get_disk_info(struct imsm_update_create_array *update)
+{
+ void *u = update;
+ struct disk_info *inf;
+
+ inf = u + sizeof(*update) - sizeof(struct imsm_dev) +
+ sizeof_imsm_dev(&update->dev, 0);
+
+ return inf;
+}
+#endif
+
static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index)
{
int offset;
return 0;
}
-static struct extent *get_extents(struct intel_super *super, struct dl *dl)
+static int count_memberships(struct dl *dl, struct intel_super *super)
{
- /* find a list of used extents on the given physical device */
- struct extent *rv, *e;
- int i, j;
int memberships = 0;
- __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
+ int i, j;
for (i = 0; i < super->anchor->num_raid_devs; i++) {
struct imsm_dev *dev = get_imsm_dev(super, i);
memberships++;
}
}
+
+ return memberships;
+}
+
+static struct extent *get_extents(struct intel_super *super, struct dl *dl)
+{
+ /* find a list of used extents on the given physical device */
+ struct extent *rv, *e;
+ int i, j;
+ int memberships = count_memberships(dl, super);
+ __u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
+
rv = malloc(sizeof(struct extent) * (memberships + 1));
if (!rv)
return NULL;
remainder = __le32_to_cpu(dl->disk.total_blocks) -
(last->start + last->size);
+ /* round down to 1k block to satisfy precision of the kernel
+ * 'size' interface
+ */
+ remainder &= ~1UL;
+ /* make sure remainder is still sane */
+ if (remainder < ROUND_UP(super->len, 512) >> 9)
+ remainder = ROUND_UP(super->len, 512) >> 9;
if (reservation > remainder)
reservation = remainder;
}
fname_from_uuid(st, &info, nbuf,'-');
printf(" UUID=%s", nbuf + 5);
}
+
+static int imsm_read_serial(int fd, char *devname, __u8 *serial);
+static void fd2devname(int fd, char *name);
+
+static int imsm_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose)
+{
+ /* dump an unsorted list of devices attached to ahci, as well as
+ * non-connected ports
+ */
+ int hba_len = strlen(hba_path) + 1;
+ struct dirent *ent;
+ DIR *dir;
+ char *path = NULL;
+ int err = 0;
+ unsigned long port_mask = (1 << port_count) - 1;
+
+ if (port_count > sizeof(port_mask) * 8) {
+ if (verbose)
+ fprintf(stderr, Name ": port_count %d out of range\n", port_count);
+ return 2;
+ }
+
+ /* scroll through /sys/dev/block looking for devices attached to
+ * this hba
+ */
+ dir = opendir("/sys/dev/block");
+ for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) {
+ int fd;
+ char model[64];
+ char vendor[64];
+ char buf[1024];
+ int major, minor;
+ char *device;
+ char *c;
+ int port;
+ int type;
+
+ if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2)
+ continue;
+ path = devt_to_devpath(makedev(major, minor));
+ if (!path)
+ continue;
+ if (!path_attached_to_hba(path, hba_path)) {
+ free(path);
+ path = NULL;
+ continue;
+ }
+
+ /* retrieve the scsi device type */
+ if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) {
+ if (verbose)
+ fprintf(stderr, Name ": failed to allocate 'device'\n");
+ err = 2;
+ break;
+ }
+ sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor);
+ if (load_sys(device, buf) != 0) {
+ if (verbose)
+ fprintf(stderr, Name ": failed to read device type for %s\n",
+ path);
+ err = 2;
+ free(device);
+ break;
+ }
+ type = strtoul(buf, NULL, 10);
+
+ /* if it's not a disk print the vendor and model */
+ if (!(type == 0 || type == 7 || type == 14)) {
+ vendor[0] = '\0';
+ model[0] = '\0';
+ sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor);
+ if (load_sys(device, buf) == 0) {
+ strncpy(vendor, buf, sizeof(vendor));
+ vendor[sizeof(vendor) - 1] = '\0';
+ c = (char *) &vendor[sizeof(vendor) - 1];
+ while (isspace(*c) || *c == '\0')
+ *c-- = '\0';
+
+ }
+ sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor);
+ if (load_sys(device, buf) == 0) {
+ strncpy(model, buf, sizeof(model));
+ model[sizeof(model) - 1] = '\0';
+ c = (char *) &model[sizeof(model) - 1];
+ while (isspace(*c) || *c == '\0')
+ *c-- = '\0';
+ }
+
+ if (vendor[0] && model[0])
+ sprintf(buf, "%.64s %.64s", vendor, model);
+ else
+ switch (type) { /* numbers from hald/linux/device.c */
+ case 1: sprintf(buf, "tape"); break;
+ case 2: sprintf(buf, "printer"); break;
+ case 3: sprintf(buf, "processor"); break;
+ case 4:
+ case 5: sprintf(buf, "cdrom"); break;
+ case 6: sprintf(buf, "scanner"); break;
+ case 8: sprintf(buf, "media_changer"); break;
+ case 9: sprintf(buf, "comm"); break;
+ case 12: sprintf(buf, "raid"); break;
+ default: sprintf(buf, "unknown");
+ }
+ } else
+ buf[0] = '\0';
+ free(device);
+
+ /* chop device path to 'host%d' and calculate the port number */
+ c = strchr(&path[hba_len], '/');
+ *c = '\0';
+ if (sscanf(&path[hba_len], "host%d", &port) == 1)
+ port -= host_base;
+ else {
+ if (verbose) {
+ *c = '/'; /* repair the full string */
+ fprintf(stderr, Name ": failed to determine port number for %s\n",
+ path);
+ }
+ err = 2;
+ break;
+ }
+
+ /* mark this port as used */
+ port_mask &= ~(1 << port);
+
+ /* print out the device information */
+ if (buf[0]) {
+ printf(" Port%d : - non-disk device (%s) -\n", port, buf);
+ continue;
+ }
+
+ fd = dev_open(ent->d_name, O_RDONLY);
+ if (fd < 0)
+ printf(" Port%d : - disk info unavailable -\n", port);
+ else {
+ fd2devname(fd, buf);
+ printf(" Port%d : %s", port, buf);
+ if (imsm_read_serial(fd, NULL, (__u8 *) buf) == 0)
+ printf(" (%s)\n", buf);
+ else
+ printf("()\n");
+ }
+ close(fd);
+ free(path);
+ path = NULL;
+ }
+ if (path)
+ free(path);
+ if (dir)
+ closedir(dir);
+ if (err == 0) {
+ int i;
+
+ for (i = 0; i < port_count; i++)
+ if (port_mask & (1 << i))
+ printf(" Port%d : - no device attached -\n", i);
+ }
+
+ return err;
+}
+
+static int detail_platform_imsm(int verbose)
+{
+ /* There are two components to imsm platform support, the ahci SATA
+ * controller and the option-rom. To find the SATA controller we
+ * simply look in /sys/bus/pci/drivers/ahci to see if an ahci
+ * controller with the Intel vendor id is present. This approach
+ * allows mdadm to leverage the kernel's ahci detection logic, with the
+ * caveat that if ahci.ko is not loaded mdadm will not be able to
+ * detect platform raid capabilities. The option-rom resides in a
+ * platform "Adapter ROM". We scan for its signature to retrieve the
+ * platform capabilities. If raid support is disabled in the BIOS the
+ * option-rom capability structure will not be available.
+ */
+ const struct imsm_orom *orom;
+ struct sys_dev *list, *hba;
+ DIR *dir;
+ struct dirent *ent;
+ const char *hba_path;
+ int host_base = 0;
+ int port_count = 0;
+
+ list = find_driver_devices("pci", "ahci");
+ for (hba = list; hba; hba = hba->next)
+ if (devpath_to_vendor(hba->path) == 0x8086)
+ break;
+
+ if (!hba) {
+ if (verbose)
+ fprintf(stderr, Name ": unable to find active ahci controller\n");
+ free_sys_dev(&list);
+ return 2;
+ } else if (verbose)
+ fprintf(stderr, Name ": found Intel SATA AHCI Controller\n");
+ hba_path = hba->path;
+ hba->path = NULL;
+ free_sys_dev(&list);
+
+ orom = find_imsm_orom();
+ if (!orom) {
+ if (verbose)
+ fprintf(stderr, Name ": imsm option-rom not found\n");
+ return 2;
+ }
+
+ printf(" Platform : Intel(R) Matrix Storage Manager\n");
+ printf(" Version : %d.%d.%d.%d\n", orom->major_ver, orom->minor_ver,
+ orom->hotfix_ver, orom->build);
+ printf(" RAID Levels :%s%s%s%s%s\n",
+ imsm_orom_has_raid0(orom) ? " raid0" : "",
+ imsm_orom_has_raid1(orom) ? " raid1" : "",
+ imsm_orom_has_raid1e(orom) ? " raid1e" : "",
+ imsm_orom_has_raid10(orom) ? " raid10" : "",
+ imsm_orom_has_raid5(orom) ? " raid5" : "");
+ printf(" Max Disks : %d\n", orom->tds);
+ printf(" Max Volumes : %d\n", orom->vpa);
+ printf(" I/O Controller : %s\n", hba_path);
+
+ /* find the smallest scsi host number to determine a port number base */
+ dir = opendir(hba_path);
+ for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) {
+ int host;
+
+ if (sscanf(ent->d_name, "host%d", &host) != 1)
+ continue;
+ if (port_count == 0)
+ host_base = host;
+ else if (host < host_base)
+ host_base = host;
+
+ if (host + 1 > port_count + host_base)
+ port_count = host + 1 - host_base;
+
+ }
+ if (dir)
+ closedir(dir);
+
+ if (!port_count || imsm_enumerate_ports(hba_path, port_count,
+ host_base, verbose) != 0) {
+ if (verbose)
+ fprintf(stderr, Name ": failed to enumerate ports\n");
+ return 2;
+ }
+
+ return 0;
+}
#endif
static int match_home_imsm(struct supertype *st, char *homehost)
strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN);
}
+static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super)
+{
+ struct dl *dl;
+
+ for (dl = super->disks; dl; dl = dl->next)
+ if (serialcmp(dl->serial, serial) == 0)
+ break;
+
+ return dl;
+}
+
static int
load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd)
{
* super->disks while the current anchor believes it is a raid member,
* check if we need to update dl->index
*/
- for (dl = super->disks; dl; dl = dl->next)
- if (serialcmp(dl->serial, serial) == 0)
- break;
-
+ dl = serial_to_dl(serial, super);
if (!dl)
dl = malloc(sizeof(*dl));
else
dl->devname = devname ? strdup(devname) : NULL;
serialcpy(dl->serial, serial);
dl->index = -2;
+ dl->e = NULL;
} else if (keep_fd) {
close(dl->fd);
dl->fd = fd;
close(d->fd);
if (d->devname)
free(d->devname);
+ if (d->e)
+ free(d->e);
free(d);
}
free(super->dev_tbl[i]);
super->dev_tbl[i] = NULL;
}
+ if (super->hba) {
+ free((void *) super->hba);
+ super->hba = NULL;
+ }
}
static void free_imsm(struct intel_super *super)
memset(super, 0, sizeof(*super));
super->creating_imsm = creating_imsm;
super->current_vol = -1;
+ super->create_offset = ~((__u32 ) 0);
+ if (!check_env("IMSM_NO_PLATFORM"))
+ super->orom = find_imsm_orom();
+ if (super->orom) {
+ struct sys_dev *list, *ent;
+
+ /* find the first intel ahci controller */
+ list = find_driver_devices("pci", "ahci");
+ for (ent = list; ent; ent = ent->next)
+ if (devpath_to_vendor(ent->path) == 0x8086)
+ break;
+ if (ent) {
+ super->hba = ent->path;
+ ent->path = NULL;
+ }
+ free_sys_dev(&list);
+ }
}
return super;
for (i = 0; i < mpb->num_disks; i++) {
disk = __get_imsm_disk(mpb, i);
- for (dl = super->disks; dl; dl = dl->next)
- if (serialcmp(dl->disk.serial, disk->serial) == 0)
- break;
+ dl = serial_to_dl(disk->serial, super);
if (dl)
continue;
/* ok we have a 'disk' without a live entry in
int idx = mpb->num_raid_devs;
int i;
unsigned long long array_blocks;
- __u32 offset = 0;
size_t size_old, size_new;
- if (mpb->num_raid_devs >= 2) {
+ if (super->orom && mpb->num_raid_devs >= super->orom->vpa) {
fprintf(stderr, Name": This imsm-container already has the "
- "maximum of 2 volumes\n");
+ "maximum of %d volumes\n", super->orom->vpa);
return 0;
}
return 0;
}
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);
+ if (info->level == 1)
+ array_blocks = info_to_blocks_per_member(info);
+ else
+ 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);
vol->migr_type = MIGR_INIT;
vol->dirty = 0;
vol->curr_migr_unit = 0;
- for (i = 0; i < idx; i++) {
- struct imsm_dev *prev = get_imsm_dev(super, i);
- struct imsm_map *pmap = get_imsm_map(prev, 0);
-
- offset += __le32_to_cpu(pmap->blocks_per_member);
- offset += IMSM_RESERVED_SECTORS;
- }
map = get_imsm_map(dev, 0);
- map->pba_of_lba0 = __cpu_to_le32(offset);
+ map->pba_of_lba0 = __cpu_to_le32(super->create_offset);
map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info));
map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info));
map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info));
}
#ifndef MDASSEMBLE
-static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
+static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
int fd, char *devname)
{
struct intel_super *super = st->sb;
dev = get_imsm_dev(super, super->current_vol);
map = get_imsm_map(dev, 0);
+ if (! (dk->state & (1<<MD_DISK_SYNC))) {
+ fprintf(stderr, Name ": %s: Cannot add spare devices to IMSM volume\n",
+ devname);
+ return 1;
+ }
+
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;
+ if (!dl) {
+ fprintf(stderr, Name ": %s is not a member of the same container\n", devname);
+ return 1;
+ }
/* add a pristine spare to the metadata */
if (dl->index < 0) {
sum = __gen_imsm_checksum(mpb);
mpb->family_num = __cpu_to_le32(sum);
}
+
+ return 0;
}
-static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
+static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
int fd, char *devname)
{
struct intel_super *super = st->sb;
int rv;
struct stat stb;
- if (super->current_vol >= 0) {
- add_to_super_imsm_volume(st, dk, fd, devname);
- return;
+ /* if we are on an RAID enabled platform check that the disk is
+ * attached to the raid controller
+ */
+ if (super->hba && !disk_attached_to_hba(fd, super->hba)) {
+ fprintf(stderr,
+ Name ": %s is not attached to the raid controller: %s\n",
+ devname ? : "disk", super->hba);
+ return 1;
}
+ if (super->current_vol >= 0)
+ return add_to_super_imsm_volume(st, dk, fd, devname);
+
fstat(fd, &stb);
dd = malloc(sizeof(*dd));
if (!dd) {
fprintf(stderr,
Name ": malloc failed %s:%d.\n", __func__, __LINE__);
- abort();
+ return 1;
}
memset(dd, 0, sizeof(*dd));
dd->major = major(stb.st_rdev);
dd->next = super->disks;
super->disks = dd;
}
+
+ return 0;
}
static int store_imsm_mpb(int fd, struct intel_super *super);
struct imsm_update_create_array *u;
struct intel_super *super = st->sb;
struct imsm_dev *dev = get_imsm_dev(super, super->current_vol);
+ struct imsm_map *map = get_imsm_map(dev, 0);
+ struct disk_info *inf;
+ struct imsm_disk *disk;
+ int i;
+ int idx;
- len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0);
+ len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) +
+ sizeof(*inf) * map->num_members;
u = malloc(len);
if (!u) {
fprintf(stderr, "%s: failed to allocate update buffer\n",
u->type = update_create_array;
u->dev_idx = super->current_vol;
imsm_copy_dev(&u->dev, dev);
+ inf = get_disk_info(u);
+ for (i = 0; i < map->num_members; i++) {
+ idx = get_imsm_disk_idx(dev, i);
+ disk = get_imsm_disk(super, idx);
+ serialcpy(inf[i].serial, disk->serial);
+ }
append_metadata_update(st, u, len);
return 0;
{
int fd;
unsigned long long ldsize;
+ const struct imsm_orom *orom;
if (level != LEVEL_CONTAINER)
return 0;
if (!dev)
return 1;
+ if (check_env("IMSM_NO_PLATFORM"))
+ orom = NULL;
+ else
+ orom = find_imsm_orom();
+ if (orom && raiddisks > orom->tds) {
+ if (verbose)
+ fprintf(stderr, Name ": %d exceeds maximum number of"
+ " platform supported disks: %d\n",
+ raiddisks, orom->tds);
+ return 0;
+ }
+
fd = open(dev, O_RDONLY|O_EXCL, 0);
if (fd < 0) {
if (verbose)
return 1;
}
+static unsigned long long find_size(struct extent *e, int *idx, int num_extents)
+{
+ const unsigned long long base_start = e[*idx].start;
+ unsigned long long end = base_start + e[*idx].size;
+ int i;
+
+ if (base_start == end)
+ return 0;
+
+ *idx = *idx + 1;
+ for (i = *idx; i < num_extents; i++) {
+ /* extend overlapping extents */
+ if (e[i].start >= base_start &&
+ e[i].start <= end) {
+ if (e[i].size == 0)
+ return 0;
+ if (e[i].start + e[i].size > end)
+ end = e[i].start + e[i].size;
+ } else if (e[i].start > end) {
+ *idx = i;
+ break;
+ }
+ }
+
+ return end - base_start;
+}
+
+static unsigned long long merge_extents(struct intel_super *super, int sum_extents)
+{
+ /* build a composite disk with all known extents and generate a new
+ * 'maxsize' given the "all disks in an array must share a common start
+ * offset" constraint
+ */
+ struct extent *e = calloc(sum_extents, sizeof(*e));
+ struct dl *dl;
+ int i, j;
+ int start_extent;
+ unsigned long long pos;
+ unsigned long long start;
+ unsigned long long maxsize;
+ unsigned long reserve;
+
+ if (!e)
+ return ~0ULL; /* error */
+
+ /* coalesce and sort all extents. also, check to see if we need to
+ * reserve space between member arrays
+ */
+ j = 0;
+ for (dl = super->disks; dl; dl = dl->next) {
+ if (!dl->e)
+ continue;
+ for (i = 0; i < dl->extent_cnt; i++)
+ e[j++] = dl->e[i];
+ }
+ qsort(e, sum_extents, sizeof(*e), cmp_extent);
+
+ /* merge extents */
+ i = 0;
+ j = 0;
+ while (i < sum_extents) {
+ e[j].start = e[i].start;
+ e[j].size = find_size(e, &i, sum_extents);
+ j++;
+ if (e[j-1].size == 0)
+ break;
+ }
+
+ pos = 0;
+ maxsize = 0;
+ start_extent = 0;
+ i = 0;
+ do {
+ unsigned long long esize;
+
+ esize = e[i].start - pos;
+ if (esize >= maxsize) {
+ maxsize = esize;
+ start = pos;
+ start_extent = i;
+ }
+ pos = e[i].start + e[i].size;
+ i++;
+ } while (e[i-1].size);
+ free(e);
+
+ if (start_extent > 0)
+ reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */
+ else
+ reserve = 0;
+
+ if (maxsize < reserve)
+ return ~0ULL;
+
+ super->create_offset = ~((__u32) 0);
+ if (start + reserve > super->create_offset)
+ return ~0ULL; /* start overflows create_offset */
+ super->create_offset = start + reserve;
+
+ return maxsize - reserve;
+}
+
+static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks)
+{
+ if (level < 0 || level == 6 || level == 4)
+ return 0;
+
+ /* if we have an orom prevent invalid raid levels */
+ if (orom)
+ switch (level) {
+ case 0: return imsm_orom_has_raid0(orom);
+ case 1:
+ if (raiddisks > 2)
+ return imsm_orom_has_raid1e(orom);
+ else
+ return imsm_orom_has_raid1(orom);
+ case 10: return imsm_orom_has_raid10(orom);
+ case 5: return imsm_orom_has_raid5(orom);
+ }
+ else
+ return 1; /* not on an Intel RAID platform so anything goes */
+
+ return 0;
+}
+
+#define vprintf(fmt, arg...) (void) (verbose && fprintf(stderr, Name fmt, ##arg))
/* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
* FIX ME add ahci details
*/
struct extent *e;
int i;
- if (level == LEVEL_CONTAINER)
+ /* We must have the container info already read in. */
+ if (!super)
return 0;
- if (level == 1 && raiddisks > 2) {
- if (verbose)
- fprintf(stderr, Name ": imsm does not support more "
- "than 2 in a raid1 configuration\n");
+ if (!is_raid_level_supported(super->orom, level, raiddisks)) {
+ vprintf(": platform does not support raid level: %d\n", level);
return 0;
}
-
- /* We must have the container info already read in. */
- if (!super)
+ if (super->orom && !imsm_orom_has_chunk(super->orom, chunk)) {
+ vprintf(": platform does not support a chunk size of: %d\n", chunk);
+ return 0;
+ }
+ if (layout != imsm_level_to_layout(level)) {
+ if (level == 5)
+ vprintf(": imsm raid 5 only supports the left-asymmetric layout\n");
+ else if (level == 10)
+ vprintf(": imsm raid 10 only supports the n2 layout\n");
+ else
+ vprintf(": imsm unknown layout %#x for this raid level %d\n",
+ layout, level);
return 0;
+ }
if (!dev) {
/* General test: make sure there is space for
}
return 1;
}
+
/* This device must be a member of the set */
if (stat(dev, &stb) < 0)
return 0;
"same imsm set\n", dev);
return 0;
}
+
+ /* retrieve the largest free space block */
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);
+ 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);
+ dl->e = e;
+ dl->extent_cnt = i;
+ } else {
+ if (verbose)
+ fprintf(stderr, Name ": unable to determine free space for: %s\n",
+ dev);
+ return 0;
+ }
+ if (maxsize < size) {
+ if (verbose)
+ fprintf(stderr, Name ": %s not enough space (%llu < %llu)\n",
+ dev, maxsize, size);
+ return 0;
+ }
+
+ /* count total number of extents for merge */
+ i = 0;
+ for (dl = super->disks; dl; dl = dl->next)
+ if (dl->e)
+ i += dl->extent_cnt;
+
+ maxsize = merge_extents(super, i);
+ if (maxsize < size) {
+ if (verbose)
+ fprintf(stderr, Name ": not enough space after merge (%llu < %llu)\n",
+ maxsize, size);
+ return 0;
+ } else if (maxsize == ~0ULL) {
+ if (verbose)
+ fprintf(stderr, Name ": failed to merge %d extents\n", i);
+ return 0;
+ }
+
*freesize = maxsize;
return 1;
return rv;
}
-static int disks_overlap(struct imsm_dev *d1, struct imsm_dev *d2)
+static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u)
{
- struct imsm_map *m1 = get_imsm_map(d1, 0);
- struct imsm_map *m2 = get_imsm_map(d2, 0);
+ struct imsm_dev *dev = get_imsm_dev(super, idx);
+ struct imsm_map *map = get_imsm_map(dev, 0);
+ struct imsm_map *new_map = get_imsm_map(&u->dev, 0);
+ struct disk_info *inf = get_disk_info(u);
+ struct imsm_disk *disk;
int i;
int j;
- int idx;
- for (i = 0; i < m1->num_members; i++) {
- idx = get_imsm_disk_idx(d1, i);
- for (j = 0; j < m2->num_members; j++)
- if (idx == get_imsm_disk_idx(d2, j))
+ for (i = 0; i < map->num_members; i++) {
+ disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
+ for (j = 0; j < new_map->num_members; j++)
+ if (serialcmp(disk->serial, inf[j].serial) == 0)
return 1;
}
unsigned long long start, end;
unsigned long long new_start, new_end;
int i;
- int overlap = 0;
+ struct disk_info *inf;
+ struct dl *dl;
/* handle racing creates: first come first serve */
if (u->dev_idx < mpb->num_raid_devs) {
new_map = get_imsm_map(&u->dev, 0);
new_start = __le32_to_cpu(new_map->pba_of_lba0);
new_end = new_start + __le32_to_cpu(new_map->blocks_per_member);
+ inf = get_disk_info(u);
/* handle activate_spare versus create race:
* check to make sure that overlapping arrays do not include
end = start + __le32_to_cpu(map->blocks_per_member);
if ((new_start >= start && new_start <= end) ||
(start >= new_start && start <= new_end))
- overlap = 1;
- if (overlap && disks_overlap(dev, &u->dev)) {
+ /* overlap */;
+ else
+ continue;
+
+ if (disks_overlap(super, i, u)) {
dprintf("%s: arrays overlap\n", __func__);
return;
}
}
- /* check num_members sanity */
- if (new_map->num_members > mpb->num_disks) {
- dprintf("%s: num_disks out of range\n", __func__);
- return;
- }
/* check that prepare update was successful */
if (!update->space) {
return;
}
+ /* check that all disks are still active before committing
+ * changes. FIXME: could we instead handle this by creating a
+ * degraded array? That's probably not what the user expects,
+ * so better to drop this update on the floor.
+ */
+ for (i = 0; i < new_map->num_members; i++) {
+ dl = serial_to_dl(inf[i].serial, super);
+ if (!dl) {
+ dprintf("%s: disk disappeared\n", __func__);
+ return;
+ }
+ }
+
super->updates_pending++;
+
+ /* convert spares to members and fixup ord_tbl */
+ for (i = 0; i < new_map->num_members; i++) {
+ dl = serial_to_dl(inf[i].serial, super);
+ if (dl->index == -1) {
+ dl->index = mpb->num_disks;
+ mpb->num_disks++;
+ dl->disk.status |= CONFIGURED_DISK;
+ dl->disk.status &= ~SPARE_DISK;
+ }
+ set_imsm_ord_tbl_ent(new_map, i, dl->index);
+ }
+
dev = update->space;
- map = get_imsm_map(dev, 0);
update->space = NULL;
imsm_copy_dev(dev, &u->dev);
- map = get_imsm_map(dev, 0);
super->dev_tbl[u->dev_idx] = dev;
mpb->num_raid_devs++;
- /* fix up flags */
- for (i = 0; i < map->num_members; i++) {
- struct imsm_disk *disk;
-
- disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
- disk->status |= CONFIGURED_DISK;
- disk->status &= ~SPARE_DISK;
- }
-
imsm_update_version_info(super);
-
break;
}
case update_add_disk:
switch (type) {
case update_create_array: {
struct imsm_update_create_array *u = (void *) update->buf;
+ struct imsm_dev *dev = &u->dev;
+ struct imsm_map *map = get_imsm_map(dev, 0);
+ struct dl *dl;
+ struct disk_info *inf;
+ int i;
+ int activate = 0;
- len = sizeof_imsm_dev(&u->dev, 1);
+ inf = get_disk_info(u);
+ len = sizeof_imsm_dev(dev, 1);
+ /* allocate a new super->dev_tbl entry */
update->space = malloc(len);
+
+ /* count how many spares will be converted to members */
+ for (i = 0; i < map->num_members; i++) {
+ dl = serial_to_dl(inf[i].serial, super);
+ if (!dl) {
+ /* hmm maybe it failed?, nothing we can do about
+ * it here
+ */
+ continue;
+ }
+ if (count_memberships(dl, super) == 0)
+ activate++;
+ }
+ len += activate * sizeof(struct imsm_disk);
break;
default:
break;
.write_init_super = write_init_super_imsm,
.validate_geometry = validate_geometry_imsm,
.add_to_super = add_to_super_imsm,
+ .detail_platform = detail_platform_imsm,
#endif
.match_home = match_home_imsm,
.uuid_from_super= uuid_from_super_imsm,
.container_content = container_content_imsm,
.external = 1,
+ .name = "imsm",
#ifndef MDASSEMBLE
/* for mdmon */
projects / thirdparty / mdadm.git / blobdiff