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6620dc9475
Save the list of PVs in /run/lvm/hints. These hints are used to reduce scanning in a number of commands to only the PVs on the system, or only the PVs in a requested VG (rather than all devices on the system.)
281 lines
6.7 KiB
C
281 lines
6.7 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "tools.h"
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struct vgreduce_params {
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int force;
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int fixed;
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int already_consistent;
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};
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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 (lv_is_partial(lvl->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_error("There are still partial LVs in VG %s.", vg->name);
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log_error("To remove them unconditionally use: vgreduce --removemissing --force.");
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log_warn("WARNING: 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_is_partial(lv)) {
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if (seg_is_raid(first_seg(lv))) {
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if (!lv_raid_remove_missing(lv))
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return_0;
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goto restart;
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}
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if (lv_is_mirror(lv)) {
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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_is_set(cmd, mirrorsonly_ARG) && !lv_is_mirrored(lv)) {
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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("WARNING: Removing partial LV %s.", display_lvname(lv));
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if (!lv_remove_with_dependencies(cmd, lv, DONT_PROMPT, 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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struct processing_handle *handle __attribute__((unused)))
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{
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int r;
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if (!vg_check_status(vg, EXPORTED_VG | LVM_WRITE | RESIZEABLE_VG))
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return ECMD_FAILED;
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r = vgreduce_single(cmd, vg, pv, 1);
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if (!r)
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return ECMD_FAILED;
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return ECMD_PROCESSED;
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}
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static int _vgreduce_repair_single(struct cmd_context *cmd, const char *vg_name,
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struct volume_group *vg, struct processing_handle *handle)
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{
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struct vgreduce_params *vp = (struct vgreduce_params *) handle->custom_handle;
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if (!vg_missing_pv_count(vg)) {
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vp->already_consistent = 1;
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return ECMD_PROCESSED;
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}
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if (!archive(vg))
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return_ECMD_FAILED;
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if (vp->force) {
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if (!_make_vg_consistent(cmd, vg))
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return_ECMD_FAILED;
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vp->fixed = 1;
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} else
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vp->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", vg_name);
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return ECMD_FAILED;
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}
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backup(vg);
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return ECMD_PROCESSED;
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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 processing_handle *handle;
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struct vgreduce_params vp = { 0 };
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const char *vg_name;
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int repairing = arg_is_set(cmd, removemissing_ARG);
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int saved_ignore_suspended_devices = ignore_suspended_devices();
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int ret;
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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_is_set(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_is_set(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_is_set(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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/* Needed to change the set of orphan PVs. */
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if (!lockd_gl(cmd, "ex", 0))
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return_ECMD_FAILED;
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cmd->lockd_gl_disable = 1;
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clear_hint_file(cmd);
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if (!(handle = init_processing_handle(cmd, NULL))) {
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log_error("Failed to initialize processing handle.");
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return ECMD_FAILED;
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}
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handle->custom_handle = &vp;
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if (!repairing) {
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if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE, NULL)) {
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log_error("Can't get lock for orphan PVs");
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ret = ECMD_FAILED;
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goto out;
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}
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/* FIXME: Pass private struct through to all these functions */
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/* and update in batch afterwards? */
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ret = process_each_pv(cmd, argc, argv, vg_name, 0,
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READ_FOR_UPDATE | PROCESS_SKIP_ORPHAN_LOCK,
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handle, _vgreduce_single);
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unlock_vg(cmd, NULL, VG_ORPHANS);
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goto out;
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}
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/*
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* VG repair (removemissing)
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*/
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vp.force = arg_count(cmd, force_ARG);
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cmd->handles_missing_pvs = 1;
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init_ignore_suspended_devices(1);
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process_each_vg(cmd, 0, NULL, vg_name, NULL,
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READ_FOR_UPDATE | READ_ALLOW_EXPORTED,
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0, handle, &_vgreduce_repair_single);
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if (vp.already_consistent) {
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log_print_unless_silent("Volume group \"%s\" is already consistent.", vg_name);
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ret = ECMD_PROCESSED;
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} else if (vp.fixed) {
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log_print_unless_silent("Wrote out consistent volume group %s.", 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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out:
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init_ignore_suspended_devices(saved_ignore_suspended_devices);
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destroy_processing_handle(cmd, handle);
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return ret;
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}
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