Ejemplo n.º 1
0
/*
 * Decide whether it is "safe" to wipe the labels on this device.
 * 0 indicates we may not.
 */
static int pvremove_check(struct cmd_context *cmd, const char *name)
{
    struct physical_volume *pv;

    /* is the partition type set correctly ? */
    if ((arg_count(cmd, force_ARG) < 1) && !is_lvm_partition(name)) {
        log_error("%s: Not LVM partition type: use -f to override",
                  name);
        return 0;
    }

    /* Is there a pv here already? */
    /* If not, this is an error unless you used -f. */
    if (!(pv = pv_read(cmd, name, NULL, NULL, 1))) {
        if (arg_count(cmd, force_ARG))
            return 1;
        log_error("Physical Volume %s not found", name);
        return 0;
    }

    /* orphan ? */
    if (is_orphan(pv))
        return 1;

    /* Allow partial & exported VGs to be destroyed. */
    /* we must have -ff to overwrite a non orphan */
    if (arg_count(cmd, force_ARG) < 2) {
        log_error("Can't pvremove physical volume \"%s\" of "
                  "volume group \"%s\" without -ff", name, pv_vg_name(pv));
        return 0;
    }

    /* prompt */
    if (!arg_count(cmd, yes_ARG) &&
            yes_no_prompt(_really_wipe, name, pv_vg_name(pv)) == 'n') {
        log_print("%s: physical volume label not removed", name);
        return 0;
    }

    if (arg_count(cmd, force_ARG)) {
        log_warn("WARNING: Wiping physical volume label from "
                 "%s%s%s%s", name,
                 !is_orphan(pv) ? " of volume group \"" : "",
                 !is_orphan(pv) ? pv_vg_name(pv) : "",
                 !is_orphan(pv) ? "\"" : "");
    }

    return 1;
}
Ejemplo n.º 2
0
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;
}
Ejemplo n.º 3
0
/*
 * Decide whether it is "safe" to wipe the labels on this device.
 * 0 indicates we may not.
 */
static int pvremove_check(struct cmd_context *cmd, const char *name)
{
	struct physical_volume *pv;
	struct dm_list mdas;

	dm_list_init(&mdas);

	/* FIXME Check partition type is LVM unless --force is given */

	/* Is there a pv here already? */
	/* If not, this is an error unless you used -f. */
	if (!(pv = pv_read(cmd, name, &mdas, NULL, 1, 0))) {
		if (arg_count(cmd, force_ARG))
			return 1;
		log_error("Physical Volume %s not found", name);
		return 0;
	}

	/*
	 * If a PV has no MDAs it may appear to be an
	 * orphan until the metadata is read off
	 * another PV in the same VG.  Detecting this
	 * means checking every VG by scanning every
	 * PV on the system.
	 */
	if (is_orphan(pv) && !dm_list_size(&mdas)) {
		if (!scan_vgs_for_pvs(cmd)) {
			log_error("Rescan for PVs without metadata areas "
				  "failed.");
			return 0;
		}
		if (!(pv = pv_read(cmd, name, NULL, NULL, 1, 0))) {
			log_error("Failed to read physical volume %s", name);
			return 0;
		}
	}

	/* orphan ? */
	if (is_orphan(pv))
		return 1;

	/* Allow partial & exported VGs to be destroyed. */
	/* we must have -ff to overwrite a non orphan */
	if (arg_count(cmd, force_ARG) < 2) {
		log_error("Can't pvremove physical volume \"%s\" of "
			  "volume group \"%s\" without -ff", name, pv_vg_name(pv));
		return 0;
	}

	/* prompt */
	if (!arg_count(cmd, yes_ARG) &&
	    yes_no_prompt(_really_wipe, name, pv_vg_name(pv)) == 'n') {
		log_error("%s: physical volume label not removed", name);
		return 0;
	}

	if (arg_count(cmd, force_ARG)) {
		log_warn("WARNING: Wiping physical volume label from "
			  "%s%s%s%s", name,
			  !is_orphan(pv) ? " of volume group \"" : "",
			  !is_orphan(pv) ? pv_vg_name(pv) : "",
			  !is_orphan(pv) ? "\"" : "");
	}

	return 1;
}
Ejemplo n.º 4
0
/*
 * Decide whether it is "safe" to wipe the labels on this device.
 * 0 indicates we may not.
 */
static int pvremove_check(struct cmd_context *cmd, const char *name)
{
	struct physical_volume *pv;

	/* FIXME Check partition type is LVM unless --force is given */

	/* Is there a pv here already? */
	/* If not, this is an error unless you used -f. */
	if (!(pv = pv_read(cmd, name, 1, 0))) {
		if (arg_count(cmd, force_ARG))
			return 1;
		log_error("Physical Volume %s not found", name);
		return 0;
	}

	/*
	 * If a PV has no MDAs it may appear to be an
	 * orphan until the metadata is read off
	 * another PV in the same VG.  Detecting this
	 * means checking every VG by scanning every
	 * PV on the system.
	 */
	if (is_orphan(pv) && !dm_list_size(&pv->fid->metadata_areas_in_use) &&
	    !dm_list_size(&pv->fid->metadata_areas_ignored)) {
		if (!scan_vgs_for_pvs(cmd, 0)) {
			log_error("Rescan for PVs without metadata areas "
				  "failed.");
			goto bad;
		}
		free_pv_fid(pv);
		if (!(pv = pv_read(cmd, name, 1, 0))) {
			log_error("Failed to read physical volume %s", name);
			goto bad;
		}
	}

	/* orphan ? */
	if (is_orphan(pv)) {
		free_pv_fid(pv);
		return 1;
	}

	/* Allow partial & exported VGs to be destroyed. */
	/* we must have -ff to overwrite a non orphan */
	if (arg_count(cmd, force_ARG) < 2) {
		log_error("PV %s belongs to Volume Group %s so please use vgreduce first.", name, pv_vg_name(pv));
		log_error("(If you are certain you need pvremove, then confirm by using --force twice.)");
		goto bad;
	}

	/* prompt */
	if (!arg_count(cmd, yes_ARG) &&
	    yes_no_prompt(_really_wipe, name, pv_vg_name(pv)) == 'n') {
		log_error("%s: physical volume label not removed", name);
		goto bad;
	}

	if (arg_count(cmd, force_ARG)) {
		log_warn("WARNING: Wiping physical volume label from "
			  "%s%s%s%s", name,
			  !is_orphan(pv) ? " of volume group \"" : "",
			  !is_orphan(pv) ? pv_vg_name(pv) : "",
			  !is_orphan(pv) ? "\"" : "");
	}

	free_pv_fid(pv);
	return 1;

bad:
	free_pv_fid(pv);
	return 0;
}
Ejemplo n.º 5
0
/*
 * See if we may pvcreate on this device.
 * 0 indicates we may not.
 */
static int pvcreate_check(struct cmd_context *cmd, const char *name)
{
	struct physical_volume *pv;
	struct device *dev;
	uint64_t md_superblock;

	/* is the partition type set correctly ? */
	if ((arg_count(cmd, force_ARG) < 1) && !is_lvm_partition(name)) {
		log_error("%s: Not LVM partition type: use -f to override",
			  name);
		return 0;
	}

	/* Is there a pv here already? */
	/* FIXME Use partial mode here? */
	pv = pv_read(cmd, name, NULL, NULL, 0);

	/* Allow partial & exported VGs to be destroyed. */
	/* We must have -ff to overwrite a non orphan */
	if (pv && !is_orphan(pv) && arg_count(cmd, force_ARG) != 2) {
		log_error("Can't initialize physical volume \"%s\" of "
			  "volume group \"%s\" without -ff", name, pv_vg_name(pv));
		return 0;
	}

	/* prompt */
	if (pv && !is_orphan(pv) && !arg_count(cmd, yes_ARG) &&
	    yes_no_prompt(_really_init, name, pv_vg_name(pv)) == 'n') {
		log_print("%s: physical volume not initialized", name);
		return 0;
	}

	if (sigint_caught())
		return 0;

	dev = dev_cache_get(name, cmd->filter);

	/* Is there an md superblock here? */
	if (!dev && md_filtering()) {
		unlock_vg(cmd, ORPHAN);

		persistent_filter_wipe(cmd->filter);
		lvmcache_destroy();

		init_md_filtering(0);
		if (!lock_vol(cmd, ORPHAN, LCK_VG_WRITE)) {
			log_error("Can't get lock for orphan PVs");
			init_md_filtering(1);
			return 0;
		}
		dev = dev_cache_get(name, cmd->filter);
		init_md_filtering(1);
	}

	if (!dev) {
		log_error("Device %s not found (or ignored by filtering).", name);
		return 0;
	}

	if (!dev_test_excl(dev)) {
		log_error("Can't open %s exclusively.  Mounted filesystem?",
			  name);
		return 0;
	}

	/* Wipe superblock? */
	if (dev_is_md(dev, &md_superblock) &&
	    ((!arg_count(cmd, uuidstr_ARG) &&
	      !arg_count(cmd, restorefile_ARG)) ||
	     arg_count(cmd, yes_ARG) || 
	     (yes_no_prompt("Software RAID md superblock "
			    "detected on %s. Wipe it? [y/n] ", name) == 'y'))) {
		log_print("Wiping software RAID md superblock on %s", name);
		if (!dev_set(dev, md_superblock, 4, 0)) {
			log_error("Failed to wipe RAID md superblock on %s",
				  name);
			return 0;
		}
	}

	if (sigint_caught())
		return 0;

	if (pv && !is_orphan(pv) && arg_count(cmd, force_ARG)) {
		log_warn("WARNING: Forcing physical volume creation on "
			  "%s%s%s%s", name,
			  !is_orphan(pv) ? " of volume group \"" : "",
			  !is_orphan(pv) ? pv_vg_name(pv) : "",
			  !is_orphan(pv) ? "\"" : "");
	}

	return 1;
}