mirror of
git://sourceware.org/git/lvm2.git
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077a6755ff
Move the free_vg() to vg.c and replace free_vg with release_vg and make the _free_vg internal. Patch is needed for sharing VG in vginfo cache so the release_vg function name is a better fit here.
337 lines
8.3 KiB
C
337 lines
8.3 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "tools.h"
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#include "lv_alloc.h"
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static int _remove_pv(struct volume_group *vg, struct pv_list *pvl, int silent)
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{
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char uuid[64] __attribute__((aligned(8)));
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if (vg->pv_count == 1) {
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log_error("Volume Groups must always contain at least one PV");
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return 0;
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}
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if (!id_write_format(&pvl->pv->id, uuid, sizeof(uuid)))
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return_0;
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log_verbose("Removing PV with UUID %s from VG %s", uuid, vg->name);
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if (pvl->pv->pe_alloc_count) {
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if (!silent)
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log_error("LVs still present on PV with UUID %s: "
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"Can't remove from VG %s", uuid, vg->name);
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return 0;
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}
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vg->free_count -= pvl->pv->pe_count;
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vg->extent_count -= pvl->pv->pe_count;
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del_pvl_from_vgs(vg, pvl);
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free_pv_fid(pvl->pv);
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return 1;
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}
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static int _consolidate_vg(struct cmd_context *cmd, struct volume_group *vg)
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{
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struct pv_list *pvl;
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struct lv_list *lvl;
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int r = 1;
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dm_list_iterate_items(lvl, &vg->lvs)
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if (lvl->lv->status & PARTIAL_LV) {
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log_warn("WARNING: Partial LV %s needs to be repaired "
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"or removed. ", lvl->lv->name);
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r = 0;
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}
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if (!r) {
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cmd->handles_missing_pvs = 1;
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log_warn("WARNING: There are still partial LVs in VG %s.", vg->name);
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log_warn("To remove them unconditionally use: vgreduce --removemissing --force.");
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log_warn("Proceeding to remove empty missing PVs.");
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}
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dm_list_iterate_items(pvl, &vg->pvs) {
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if (pvl->pv->dev && !is_missing_pv(pvl->pv))
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continue;
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if (r && !_remove_pv(vg, pvl, 0))
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return_0;
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}
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return r;
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}
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static int _make_vg_consistent(struct cmd_context *cmd, struct volume_group *vg)
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{
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struct lv_list *lvl;
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struct logical_volume *lv;
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cmd->partial_activation = 1;
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restart:
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vg_mark_partial_lvs(vg, 1);
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dm_list_iterate_items(lvl, &vg->lvs) {
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lv = lvl->lv;
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/* Are any segments of this LV on missing PVs? */
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if (lv->status & PARTIAL_LV) {
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if (lv->status & MIRRORED) {
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if (!mirror_remove_missing(cmd, lv, 1))
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return_0;
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goto restart;
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}
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if (arg_count(cmd, mirrorsonly_ARG) &&!(lv->status & MIRRORED)) {
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log_error("Non-mirror-image LV %s found: can't remove.", lv->name);
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continue;
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}
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if (!lv_is_visible(lv))
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continue;
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log_warn("Removing partial LV %s.", lv->name);
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if (!lv_remove_with_dependencies(cmd, lv, 1, 0))
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return_0;
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goto restart;
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}
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}
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_consolidate_vg(cmd, vg);
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return 1;
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}
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/* Or take pv_name instead? */
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static int _vgreduce_single(struct cmd_context *cmd, struct volume_group *vg,
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struct physical_volume *pv,
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void *handle __attribute__((unused)))
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{
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struct pv_list *pvl;
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struct volume_group *orphan_vg = NULL;
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int r = ECMD_FAILED;
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const char *name = pv_dev_name(pv);
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if (pv_pe_alloc_count(pv)) {
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log_error("Physical volume \"%s\" still in use", name);
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return ECMD_FAILED;
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}
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if (vg->pv_count == 1) {
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log_error("Can't remove final physical volume \"%s\" from "
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"volume group \"%s\"", name, vg->name);
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return ECMD_FAILED;
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}
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if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE)) {
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log_error("Can't get lock for orphan PVs");
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return ECMD_FAILED;
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}
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pvl = find_pv_in_vg(vg, name);
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if (!archive(vg))
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goto_bad;
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log_verbose("Removing \"%s\" from volume group \"%s\"", name, vg->name);
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if (pvl)
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del_pvl_from_vgs(vg, pvl);
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pv->vg_name = vg->fid->fmt->orphan_vg_name;
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pv->status = ALLOCATABLE_PV;
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if (!dev_get_size(pv_dev(pv), &pv->size)) {
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log_error("%s: Couldn't get size.", pv_dev_name(pv));
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goto bad;
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}
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vg->free_count -= pv_pe_count(pv) - pv_pe_alloc_count(pv);
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vg->extent_count -= pv_pe_count(pv);
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orphan_vg = vg_read_for_update(cmd, vg->fid->fmt->orphan_vg_name,
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NULL, 0);
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if (vg_read_error(orphan_vg))
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goto bad;
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if (!vg_split_mdas(cmd, vg, orphan_vg) || !vg->pv_count) {
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log_error("Cannot remove final metadata area on \"%s\" from \"%s\"",
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name, vg->name);
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goto bad;
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}
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if (!vg_write(vg) || !vg_commit(vg)) {
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log_error("Removal of physical volume \"%s\" from "
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"\"%s\" failed", name, vg->name);
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goto bad;
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}
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if (!pv_write(cmd, pv, 0)) {
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log_error("Failed to clear metadata from physical "
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"volume \"%s\" "
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"after removal from \"%s\"", name, vg->name);
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goto bad;
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}
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backup(vg);
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log_print("Removed \"%s\" from volume group \"%s\"", name, vg->name);
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r = ECMD_PROCESSED;
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bad:
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if (pvl)
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free_pv_fid(pvl->pv);
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unlock_and_release_vg(cmd, orphan_vg, VG_ORPHANS);
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return r;
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}
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int vgreduce(struct cmd_context *cmd, int argc, char **argv)
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{
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struct volume_group *vg;
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const char *vg_name;
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int ret = ECMD_FAILED;
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int fixed = 1;
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int repairing = arg_count(cmd, removemissing_ARG);
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int saved_ignore_suspended_devices = ignore_suspended_devices();
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if (!argc && !repairing) {
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log_error("Please give volume group name and "
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"physical volume paths");
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return EINVALID_CMD_LINE;
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}
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if (!argc && repairing) {
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log_error("Please give volume group name");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, mirrorsonly_ARG) && !repairing) {
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log_error("--mirrorsonly requires --removemissing");
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return EINVALID_CMD_LINE;
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}
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if (argc == 1 && !arg_count(cmd, all_ARG) && !repairing) {
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log_error("Please enter physical volume paths or option -a");
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return EINVALID_CMD_LINE;
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}
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if (argc > 1 && arg_count(cmd, all_ARG)) {
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log_error("Option -a and physical volume paths mutually "
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"exclusive");
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return EINVALID_CMD_LINE;
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}
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if (argc > 1 && repairing) {
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log_error("Please only specify the volume group");
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return EINVALID_CMD_LINE;
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}
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vg_name = skip_dev_dir(cmd, argv[0], NULL);
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argv++;
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argc--;
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log_verbose("Finding volume group \"%s\"", vg_name);
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if (repairing) {
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init_ignore_suspended_devices(1);
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cmd->handles_missing_pvs = 1;
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}
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vg = vg_read_for_update(cmd, vg_name, NULL, READ_ALLOW_EXPORTED);
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if (vg_read_error(vg) == FAILED_ALLOCATION ||
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vg_read_error(vg) == FAILED_NOTFOUND)
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goto_out;
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/* FIXME We want to allow read-only VGs to be changed here? */
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if (vg_read_error(vg) && vg_read_error(vg) != FAILED_READ_ONLY
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&& !arg_count(cmd, removemissing_ARG))
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goto_out;
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if (repairing) {
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if (!vg_read_error(vg) && !vg_missing_pv_count(vg)) {
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log_error("Volume group \"%s\" is already consistent",
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vg_name);
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ret = ECMD_PROCESSED;
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goto out;
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}
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release_vg(vg);
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log_verbose("Trying to open VG %s for recovery...", vg_name);
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vg = vg_read_for_update(cmd, vg_name, NULL,
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READ_ALLOW_INCONSISTENT
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| READ_ALLOW_EXPORTED);
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if (vg_read_error(vg) && vg_read_error(vg) != FAILED_READ_ONLY
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&& vg_read_error(vg) != FAILED_INCONSISTENT)
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goto_out;
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if (!archive(vg))
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goto_out;
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if (arg_count(cmd, force_ARG)) {
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if (!_make_vg_consistent(cmd, vg))
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goto_out;
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} else
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fixed = _consolidate_vg(cmd, vg);
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if (!vg_write(vg) || !vg_commit(vg)) {
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log_error("Failed to write out a consistent VG for %s",
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vg_name);
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goto out;
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}
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backup(vg);
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if (fixed) {
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log_print("Wrote out consistent volume group %s",
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vg_name);
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ret = ECMD_PROCESSED;
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} else
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ret = ECMD_FAILED;
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} else {
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if (!vg_check_status(vg, EXPORTED_VG | LVM_WRITE | RESIZEABLE_VG))
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goto_out;
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/* FIXME: Pass private struct through to all these functions */
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/* and update in batch here? */
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ret = process_each_pv(cmd, argc, argv, vg, READ_FOR_UPDATE, 0, NULL,
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_vgreduce_single);
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}
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out:
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init_ignore_suspended_devices(saved_ignore_suspended_devices);
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unlock_and_release_vg(cmd, vg, vg_name);
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return ret;
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/******* FIXME
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log_error ("no empty physical volumes found in volume group \"%s\"", vg_name);
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log_verbose
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("volume group \"%s\" will be reduced by %d physical volume%s",
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vg_name, np, np > 1 ? "s" : "");
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log_verbose ("reducing volume group \"%s\" by physical volume \"%s\"",
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vg_name, pv_names[p]);
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log_print
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("volume group \"%s\" %ssuccessfully reduced by physical volume%s:",
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vg_name, error > 0 ? "NOT " : "", p > 1 ? "s" : "");
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log_print("%s", pv_this[p]->pv_name);
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********/
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}
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