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126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/*
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* Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2015 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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#include "pvmove_poll.h"
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static int _is_pvmove_image_removable(struct logical_volume *mimage_lv,
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void *baton)
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{
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uint32_t mimage_to_remove = *((uint32_t *)baton);
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struct lv_segment *mirror_seg;
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if (!(mirror_seg = get_only_segment_using_this_lv(mimage_lv))) {
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log_error(INTERNAL_ERROR "%s is not a proper mirror image",
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mimage_lv->name);
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return 0;
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}
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if (seg_type(mirror_seg, 0) != AREA_LV) {
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log_error(INTERNAL_ERROR "%s is not a pvmove mirror of LV-type",
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mirror_seg->lv->name);
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return 0;
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}
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if (mimage_to_remove > mirror_seg->area_count) {
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log_error(INTERNAL_ERROR "Mirror image %" PRIu32 " not found in segment",
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mimage_to_remove);
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return 0;
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}
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if (seg_lv(mirror_seg, mimage_to_remove) == mimage_lv)
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return 1;
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return 0;
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}
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static int _detach_pvmove_mirror(struct cmd_context *cmd,
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struct logical_volume *lv_mirr)
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{
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uint32_t mimage_to_remove = 0;
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struct dm_list lvs_completed;
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/* Update metadata to remove mirror segments and break dependencies */
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dm_list_init(&lvs_completed);
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if (arg_is_set(cmd, abort_ARG) &&
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(seg_type(first_seg(lv_mirr), 0) == AREA_LV))
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mimage_to_remove = 1; /* remove the second mirror leg */
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if (!lv_remove_mirrors(cmd, lv_mirr, 1, 0, _is_pvmove_image_removable, &mimage_to_remove, PVMOVE) ||
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!remove_layers_for_segments_all(cmd, lv_mirr, PVMOVE,
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&lvs_completed)) {
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return_0;
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}
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return 1;
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}
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/*
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* Called to advance the mirror to successive sections of it.
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* (Not called first time or after the last section completes.)
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*/
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int pvmove_update_metadata(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv_mirr,
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struct dm_list *lvs_changed __attribute__((unused)),
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unsigned flags __attribute__((unused)))
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{
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if (!lv_update_and_reload(lv_mirr))
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return_0;
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return 1;
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}
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int pvmove_finish(struct cmd_context *cmd, struct volume_group *vg,
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struct logical_volume *lv_mirr, struct dm_list *lvs_changed)
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{
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if (!dm_list_empty(lvs_changed) &&
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(!_detach_pvmove_mirror(cmd, lv_mirr) ||
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!replace_lv_with_error_segment(lv_mirr))) {
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log_error("ABORTING: Removal of temporary mirror failed");
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return 0;
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}
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if (!lv_update_and_reload(lv_mirr))
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return_0;
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/* Deactivate mirror LV */
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if (!deactivate_lv(cmd, lv_mirr)) {
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log_error("ABORTING: Unable to deactivate temporary logical "
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"volume %s.", display_lvname(lv_mirr));
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return 0;
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}
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log_verbose("Removing temporary pvmove LV");
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if (!lv_remove(lv_mirr)) {
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log_error("ABORTING: Removal of temporary pvmove LV failed");
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return 0;
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}
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/* Store it on disks */
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log_verbose("Writing out final volume group after pvmove");
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if (!vg_write(vg) || !vg_commit(vg)) {
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log_error("ABORTING: Failed to write new data locations "
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"to disk.");
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return 0;
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}
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/* FIXME backup positioning */
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backup(vg);
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return 1;
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}
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