static int _native_check_pv_min_size(struct device *dev)
{
uint64_t size;
int ret = 0;
/* Check it's accessible */
if (!dev_open_readonly_quiet(dev)) {
log_debug_devs("%s: Skipping: open failed", dev_name(dev));
return 0;
}
/* Check it's not too small */
if (!dev_get_size(dev, &size)) {
log_debug_devs("%s: Skipping: dev_get_size failed", dev_name(dev));
goto out;
}
if (size < pv_min_size()) {
log_debug_devs("%s: Skipping: %s", dev_name(dev),
_too_small_to_hold_pv_msg);
goto out;
}
ret = 1;
out:
if (!dev_close(dev))
stack;
return ret;
}
/*
* Returns -1 on error
*/
int dev_is_md(struct device *dev, uint64_t *sb)
{
int ret = 1;
md_minor_version_t minor;
uint64_t size, sb_offset;
if (!dev_get_size(dev, &size)) {
stack;
return -1;
}
if (size < MD_RESERVED_SECTORS * 2)
return 0;
if (!dev_open_readonly(dev)) {
stack;
return -1;
}
/* Check if it is an md component device. */
/* Version 0.90.0 */
sb_offset = MD_NEW_SIZE_SECTORS(size) << SECTOR_SHIFT;
if (_dev_has_md_magic(dev, sb_offset))
goto out;
minor = MD_MINOR_VERSION_MIN;
/* Version 1, try v1.0 -> v1.2 */
do {
sb_offset = _v1_sb_offset(size, minor);
if (_dev_has_md_magic(dev, sb_offset))
goto out;
} while (++minor <= MD_MINOR_VERSION_MAX);
ret = 0;
out:
if (!dev_close(dev))
stack;
if (ret && sb)
*sb = sb_offset;
return ret;
}
uint64_t
spdk_fd_get_size(int fd)
{
struct stat st;
if (fstat(fd, &st) != 0) {
return 0;
}
if (S_ISLNK(st.st_mode)) {
return 0;
}
if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)) {
return dev_get_size(fd);
} else if (S_ISREG(st.st_mode)) {
return st.st_size;
}
/* Not REG, CHR or BLK */
return 0;
}
int import_pv(const struct format_type *fmt, struct dm_pool *mem,
struct device *dev, struct volume_group *vg,
struct physical_volume *pv, struct pv_disk *pvd,
struct vg_disk *vgd)
{
uint64_t size;
memset(pv, 0, sizeof(*pv));
memcpy(&pv->id, pvd->pv_uuid, ID_LEN);
pv->dev = dev;
if (!*pvd->vg_name)
pv->vg_name = fmt->orphan_vg_name;
else if (!(pv->vg_name = dm_pool_strdup(mem, (char *)pvd->vg_name))) {
log_error("Volume Group name allocation failed.");
return 0;
}
memcpy(&pv->vgid, vgd->vg_uuid, sizeof(vg->id));
/* Store system_id from first PV if PV belongs to a VG */
if (vg && !*vg->lvm1_system_id)
strncpy(vg->lvm1_system_id, (char *)pvd->system_id, NAME_LEN);
if (vg &&
strncmp(vg->lvm1_system_id, (char *)pvd->system_id, sizeof(pvd->system_id)))
log_very_verbose("System ID %s on %s differs from %s for "
"volume group", pvd->system_id,
pv_dev_name(pv), vg->lvm1_system_id);
/*
* If exported, we still need to flag in pv->status too because
* we don't always have a struct volume_group when we need this.
*/
if (pvd->pv_status & VG_EXPORTED)
pv->status |= EXPORTED_VG;
if (pvd->pv_allocatable)
pv->status |= ALLOCATABLE_PV;
pv->size = pvd->pv_size;
pv->pe_size = pvd->pe_size;
pv->pe_start = pvd->pe_start;
pv->pe_count = pvd->pe_total;
pv->pe_alloc_count = 0;
pv->pe_align = 0;
pv->is_labelled = 0; /* format1 PVs have no label */
pv->label_sector = 0;
/* Fix up pv size if missing or impossibly large */
if (!pv->size || pv->size > (1ULL << 62)) {
if (!dev_get_size(dev, &pv->size)) {
log_error("%s: Couldn't get size.", pv_dev_name(pv));
return 0;
}
log_verbose("Fixing up missing format1 size (%s) "
"for PV %s", display_size(fmt->cmd, pv->size),
pv_dev_name(pv));
if (vg) {
size = pv->pe_count * (uint64_t) vg->extent_size +
pv->pe_start;
if (size > pv->size)
log_warn("WARNING: Physical Volume %s is too "
"large for underlying device",
pv_dev_name(pv));
}
}
dm_list_init(&pv->tags);
dm_list_init(&pv->segments);
if (!alloc_pv_segment_whole_pv(mem, pv))
return_0;
return 1;
}
static int _pv_resize_single(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
const uint64_t new_size)
{
struct pv_list *pvl;
uint64_t size = 0;
uint32_t new_pe_count = 0;
int r = 0;
struct dm_list mdas;
const char *pv_name = pv_dev_name(pv);
const char *vg_name;
struct lvmcache_info *info;
int mda_count = 0;
struct volume_group *old_vg = vg;
dm_list_init(&mdas);
if (is_orphan_vg(pv_vg_name(pv))) {
vg_name = VG_ORPHANS;
if (!lock_vol(cmd, vg_name, LCK_VG_WRITE)) {
log_error("Can't get lock for orphans");
return 0;
}
if (!(pv = pv_read(cmd, pv_name, &mdas, NULL, 1, 0))) {
unlock_vg(cmd, vg_name);
log_error("Unable to read PV \"%s\"", pv_name);
return 0;
}
mda_count = dm_list_size(&mdas);
} else {
vg_name = pv_vg_name(pv);
vg = vg_read_for_update(cmd, vg_name, NULL, 0);
if (vg_read_error(vg))
goto bad;
if (!(pvl = find_pv_in_vg(vg, pv_name))) {
log_error("Unable to find \"%s\" in volume group \"%s\"",
pv_name, vg->name);
goto bad;
}
pv = pvl->pv;
if (!(info = info_from_pvid(pv->dev->pvid, 0))) {
log_error("Can't get info for PV %s in volume group %s",
pv_name, vg->name);
goto bad;
}
mda_count = dm_list_size(&info->mdas);
if (!archive(vg))
goto bad;
}
/* FIXME Create function to test compatibility properly */
if (mda_count > 1) {
log_error("%s: too many metadata areas for pvresize", pv_name);
goto bad;
}
if (!(pv->fmt->features & FMT_RESIZE_PV)) {
log_error("Physical volume %s format does not support resizing.",
pv_name);
goto bad;
}
/* Get new size */
if (!dev_get_size(pv_dev(pv), &size)) {
log_error("%s: Couldn't get size.", pv_name);
goto bad;
}
if (new_size) {
if (new_size > size)
log_warn("WARNING: %s: Overriding real size. "
"You could lose data.", pv_name);
log_verbose("%s: Pretending size is %" PRIu64 " not %" PRIu64
" sectors.", pv_name, new_size, pv_size(pv));
size = new_size;
}
if (size < PV_MIN_SIZE) {
log_error("%s: Size must exceed minimum of %ld sectors.",
pv_name, PV_MIN_SIZE);
goto bad;
}
if (size < pv_pe_start(pv)) {
log_error("%s: Size must exceed physical extent start of "
"%" PRIu64 " sectors.", pv_name, pv_pe_start(pv));
goto bad;
}
pv->size = size;
if (vg) {
pv->size -= pv_pe_start(pv);
new_pe_count = pv_size(pv) / vg->extent_size;
if (!new_pe_count) {
log_error("%s: Size must leave space for at "
"least one physical extent of "
"%" PRIu32 " sectors.", pv_name,
pv_pe_size(pv));
goto bad;
}
if (!pv_resize(pv, vg, new_pe_count))
goto_bad;
}
log_verbose("Resizing volume \"%s\" to %" PRIu64 " sectors.",
pv_name, pv_size(pv));
log_verbose("Updating physical volume \"%s\"", pv_name);
if (!is_orphan_vg(pv_vg_name(pv))) {
if (!vg_write(vg) || !vg_commit(vg)) {
log_error("Failed to store physical volume \"%s\" in "
"volume group \"%s\"", pv_name, vg->name);
goto bad;
}
backup(vg);
} else if (!(pv_write(cmd, pv, NULL, INT64_C(-1)))) {
log_error("Failed to store physical volume \"%s\"",
pv_name);
goto bad;;
}
log_print("Physical volume \"%s\" changed", pv_name);
r = 1;
bad:
unlock_vg(cmd, vg_name);
if (!old_vg)
vg_release(vg);
return r;
}