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616 lines
15 KiB
C
616 lines
15 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 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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/*
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* Increments *count by the number of _new_ monitored devices.
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*/
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static int _monitor_lvs_in_vg(struct cmd_context *cmd,
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struct volume_group *vg, int reg, int *count)
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{
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struct lv_list *lvl;
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struct logical_volume *lv;
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struct lvinfo info;
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int lv_active;
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int r = 1;
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dm_list_iterate_items(lvl, &vg->lvs) {
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lv = lvl->lv;
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if (!lv_info(cmd, lv, 0, &info, 0, 0))
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lv_active = 0;
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else
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lv_active = info.exists;
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/*
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* FIXME: Need to consider all cases... PVMOVE, etc
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*/
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if ((lv->status & PVMOVE) || !lv_active)
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continue;
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if (!monitor_dev_for_events(cmd, lv, 0, reg)) {
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r = 0;
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continue;
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} else
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(*count)++;
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}
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return r;
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}
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static int _poll_lvs_in_vg(struct cmd_context *cmd,
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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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struct lvinfo info;
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int lv_active;
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int count = 0;
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dm_list_iterate_items(lvl, &vg->lvs) {
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lv = lvl->lv;
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if (!lv_info(cmd, lv, 0, &info, 0, 0))
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lv_active = 0;
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else
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lv_active = info.exists;
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if (lv_active &&
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(lv->status & (PVMOVE|CONVERTING|MERGING))) {
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lv_spawn_background_polling(cmd, lv);
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count++;
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}
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}
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/*
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* returns the number of polled devices
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* - there is no way to know if lv is already being polled
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*/
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return count;
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}
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static int _activate_lvs_in_vg(struct cmd_context *cmd,
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struct volume_group *vg, int activate)
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{
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struct lv_list *lvl;
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struct logical_volume *lv;
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int count = 0, expected_count = 0;
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sigint_allow();
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dm_list_iterate_items(lvl, &vg->lvs) {
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if (sigint_caught())
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return_0;
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lv = lvl->lv;
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if (!lv_is_visible(lv))
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continue;
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/* If LV is sparse, activate origin instead */
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if (lv_is_cow(lv) && lv_is_virtual_origin(origin_from_cow(lv)))
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lv = origin_from_cow(lv);
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/* Only request activation of snapshot origin devices */
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if ((lv->status & SNAPSHOT) || lv_is_cow(lv))
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continue;
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/* Only request activation of mirror LV */
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if ((lv->status & MIRROR_IMAGE) || (lv->status & MIRROR_LOG))
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continue;
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/* Only request activation of the first replicator-dev LV */
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/* Avoids retry with all heads in case of failure */
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if (lv_is_replicator_dev(lv) && (lv != first_replicator_dev(lv)))
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continue;
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/* Can't deactivate a pvmove LV */
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/* FIXME There needs to be a controlled way of doing this */
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if (((activate == CHANGE_AN) || (activate == CHANGE_ALN)) &&
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((lv->status & PVMOVE) ))
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continue;
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/*
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* If the LV is active exclusive remotely,
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* then ignore it here
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*/
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if (lv_is_active_exclusive_remotely(lv)) {
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log_verbose("%s/%s is exclusively active on"
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" a remote node", vg->name, lv->name);
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continue;
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}
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expected_count++;
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if (activate == CHANGE_AN) {
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if (!deactivate_lv(cmd, lv)) {
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stack;
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continue;
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}
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} else if (activate == CHANGE_ALN) {
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if (!deactivate_lv_local(cmd, lv)) {
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stack;
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continue;
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}
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} else if (lv_is_origin(lv) || (activate == CHANGE_AE)) {
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if (!activate_lv_excl(cmd, lv)) {
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stack;
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continue;
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}
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} else if (activate == CHANGE_ALY) {
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if (!activate_lv_local(cmd, lv)) {
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stack;
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continue;
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}
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} else if (!activate_lv(cmd, lv)) {
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stack;
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continue;
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}
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if (background_polling() &&
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activate != CHANGE_AN && activate != CHANGE_ALN &&
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(lv->status & (PVMOVE|CONVERTING|MERGING)))
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lv_spawn_background_polling(cmd, lv);
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count++;
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}
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sigint_restore();
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if (expected_count)
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log_verbose("%s %d logical volumes in volume group %s",
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(activate == CHANGE_AN || activate == CHANGE_ALN)?
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"Deactivated" : "Activated", count, vg->name);
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return (expected_count != count) ? 0 : 1;
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}
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static int _vgchange_monitoring(struct cmd_context *cmd, struct volume_group *vg)
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{
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int r = 1;
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int monitored = 0;
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if (lvs_in_vg_activated(vg) &&
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dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
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if (!_monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode(), &monitored))
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r = 0;
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log_print("%d logical volume(s) in volume group "
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"\"%s\" %smonitored",
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monitored, vg->name, (dmeventd_monitor_mode()) ? "" : "un");
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}
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return r;
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}
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static int _vgchange_background_polling(struct cmd_context *cmd, struct volume_group *vg)
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{
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int polled;
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if (lvs_in_vg_activated(vg) && background_polling()) {
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polled = _poll_lvs_in_vg(cmd, vg);
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if (polled)
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log_print("Background polling started for %d logical volume(s) "
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"in volume group \"%s\"",
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polled, vg->name);
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}
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return 1;
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}
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static int _vgchange_available(struct cmd_context *cmd, struct volume_group *vg)
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{
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int lv_open, active, monitored = 0;
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int available, r = 1;
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int activate = 1;
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/*
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* Safe, since we never write out new metadata here. Required for
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* partial activation to work.
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*/
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cmd->handles_missing_pvs = 1;
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available = arg_uint_value(cmd, available_ARG, 0);
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if ((available == CHANGE_AN) || (available == CHANGE_ALN))
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activate = 0;
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/* FIXME: Force argument to deactivate them? */
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if (!activate && (lv_open = lvs_in_vg_opened(vg))) {
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log_error("Can't deactivate volume group \"%s\" with %d open "
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"logical volume(s)", vg->name, lv_open);
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return 0;
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}
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/* FIXME Move into library where clvmd can use it */
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if (activate)
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check_current_backup(vg);
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if (activate && (active = lvs_in_vg_activated(vg))) {
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log_verbose("%d logical volume(s) in volume group \"%s\" "
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"already active", active, vg->name);
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if (dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
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if (!_monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode(), &monitored))
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r = 0;
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log_verbose("%d existing logical volume(s) in volume "
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"group \"%s\" %smonitored",
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monitored, vg->name,
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dmeventd_monitor_mode() ? "" : "un");
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}
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}
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if (!_activate_lvs_in_vg(cmd, vg, available))
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r = 0;
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/* Print message only if there was not found a missing VG */
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if (!vg->cmd_missing_vgs)
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log_print("%d logical volume(s) in volume group \"%s\" now active",
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lvs_in_vg_activated(vg), vg->name);
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return r;
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}
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static int _vgchange_refresh(struct cmd_context *cmd, struct volume_group *vg)
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{
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log_verbose("Refreshing volume group \"%s\"", vg->name);
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if (!vg_refresh_visible(cmd, vg)) {
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stack;
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return 0;
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}
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return 1;
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}
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static int _vgchange_alloc(struct cmd_context *cmd, struct volume_group *vg)
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{
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alloc_policy_t alloc;
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alloc = arg_uint_value(cmd, alloc_ARG, ALLOC_NORMAL);
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/* FIXME: make consistent with vg_set_alloc_policy() */
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if (alloc == vg->alloc) {
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log_error("Volume group allocation policy is already %s",
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get_alloc_string(vg->alloc));
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return 0;
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}
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if (!vg_set_alloc_policy(vg, alloc))
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return_0;
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return 1;
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}
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static int _vgchange_resizeable(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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int resizeable = !strcmp(arg_str_value(cmd, resizeable_ARG, "n"), "y");
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if (resizeable && vg_is_resizeable(vg)) {
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log_error("Volume group \"%s\" is already resizeable",
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vg->name);
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return 0;
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}
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if (!resizeable && !vg_is_resizeable(vg)) {
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log_error("Volume group \"%s\" is already not resizeable",
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vg->name);
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return 0;
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}
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if (resizeable)
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vg->status |= RESIZEABLE_VG;
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else
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vg->status &= ~RESIZEABLE_VG;
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return 1;
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}
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static int _vgchange_clustered(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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int clustered = !strcmp(arg_str_value(cmd, clustered_ARG, "n"), "y");
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if (clustered && (vg_is_clustered(vg))) {
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log_error("Volume group \"%s\" is already clustered",
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vg->name);
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return 0;
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}
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if (!clustered && !(vg_is_clustered(vg))) {
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log_error("Volume group \"%s\" is already not clustered",
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vg->name);
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return 0;
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}
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if (!vg_set_clustered(vg, clustered))
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return_0;
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return 1;
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}
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static int _vgchange_logicalvolume(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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uint32_t max_lv = arg_uint_value(cmd, logicalvolume_ARG, 0);
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if (!vg_set_max_lv(vg, max_lv))
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return_0;
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return 1;
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}
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static int _vgchange_physicalvolumes(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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uint32_t max_pv = arg_uint_value(cmd, maxphysicalvolumes_ARG, 0);
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if (!vg_set_max_pv(vg, max_pv))
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return_0;
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return 1;
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}
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static int _vgchange_pesize(struct cmd_context *cmd, struct volume_group *vg)
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{
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uint32_t extent_size;
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if (arg_uint64_value(cmd, physicalextentsize_ARG, 0) > MAX_EXTENT_SIZE) {
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log_error("Physical extent size cannot be larger than %s",
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display_size(cmd, (uint64_t) MAX_EXTENT_SIZE));
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return 1;
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}
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extent_size = arg_uint_value(cmd, physicalextentsize_ARG, 0);
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/* FIXME: remove check - redundant with vg_change_pesize */
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if (extent_size == vg->extent_size) {
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log_error("Physical extent size of VG %s is already %s",
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vg->name, display_size(cmd, (uint64_t) extent_size));
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return 1;
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}
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if (!vg_set_extent_size(vg, extent_size))
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return_0;
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return 1;
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}
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static int _vgchange_addtag(struct cmd_context *cmd, struct volume_group *vg)
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{
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return change_tag(cmd, vg, NULL, NULL, addtag_ARG);
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}
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static int _vgchange_deltag(struct cmd_context *cmd, struct volume_group *vg)
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{
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return change_tag(cmd, vg, NULL, NULL, deltag_ARG);
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}
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static int _vgchange_uuid(struct cmd_context *cmd __attribute__((unused)),
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struct volume_group *vg)
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{
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struct lv_list *lvl;
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if (lvs_in_vg_activated(vg)) {
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log_error("Volume group has active logical volumes");
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return 0;
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}
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if (!id_create(&vg->id)) {
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log_error("Failed to generate new random UUID for VG %s.",
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vg->name);
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return 0;
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}
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dm_list_iterate_items(lvl, &vg->lvs) {
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memcpy(&lvl->lv->lvid, &vg->id, sizeof(vg->id));
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}
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return 1;
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}
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static int _vgchange_metadata_copies(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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uint32_t mda_copies = arg_uint_value(cmd, vgmetadatacopies_ARG, DEFAULT_VGMETADATACOPIES);
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if (mda_copies == vg_mda_copies(vg)) {
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if (vg_mda_copies(vg) == VGMETADATACOPIES_UNMANAGED)
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log_error("Number of metadata copies for VG %s is already unmanaged.",
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vg->name);
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else
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log_error("Number of metadata copies for VG %s is already %" PRIu32,
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vg->name, mda_copies);
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return 1;
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}
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if (!vg_set_mda_copies(vg, mda_copies))
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return_0;
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return 1;
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}
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static int vgchange_single(struct cmd_context *cmd, const char *vg_name,
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struct volume_group *vg,
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void *handle __attribute__((unused)))
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{
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int dmeventd_mode;
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int archived = 0;
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int i;
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static struct {
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int arg;
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int (*fn)(struct cmd_context *cmd, struct volume_group *vg);
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} _vgchange_args[] = {
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{ logicalvolume_ARG, &_vgchange_logicalvolume },
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{ maxphysicalvolumes_ARG, &_vgchange_physicalvolumes },
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{ resizeable_ARG, &_vgchange_resizeable },
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{ deltag_ARG, &_vgchange_deltag },
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{ addtag_ARG, &_vgchange_addtag },
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{ physicalextentsize_ARG, &_vgchange_pesize },
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{ uuid_ARG, &_vgchange_uuid },
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{ alloc_ARG, &_vgchange_alloc },
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{ clustered_ARG, &_vgchange_clustered },
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{ vgmetadatacopies_ARG, &_vgchange_metadata_copies },
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{ -1, NULL },
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};
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if (vg_is_exported(vg)) {
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log_error("Volume group \"%s\" is exported", vg_name);
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return ECMD_FAILED;
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}
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if (!get_activation_monitoring_mode(cmd, vg, &dmeventd_mode))
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return ECMD_FAILED;
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init_dmeventd_monitor(dmeventd_mode);
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/*
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* FIXME: DEFAULT_BACKGROUND_POLLING should be "unspecified".
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* If --poll is explicitly provided use it; otherwise polling
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* should only be started if the LV is not already active. So:
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* 1) change the activation code to say if the LV was actually activated
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* 2) make polling of an LV tightly coupled with LV activation
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*
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* Do not initiate any polling if --sysinit option is used.
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*/
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init_background_polling(arg_count(cmd, sysinit_ARG) ? 0 :
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arg_int_value(cmd, poll_ARG,
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DEFAULT_BACKGROUND_POLLING));
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for (i = 0; _vgchange_args[i].arg >= 0; i++) {
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if (arg_count(cmd, _vgchange_args[i].arg)) {
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if (!archived && !archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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archived = 1;
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if (!_vgchange_args[i].fn(cmd, vg)) {
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stack;
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return ECMD_FAILED;
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}
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}
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}
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if (archived) {
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if (!vg_write(vg) || !vg_commit(vg)) {
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stack;
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return ECMD_FAILED;
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}
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backup(vg);
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log_print("Volume group \"%s\" successfully changed", vg->name);
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}
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if (arg_count(cmd, available_ARG)) {
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if (!_vgchange_available(cmd, vg))
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return ECMD_FAILED;
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}
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if (arg_count(cmd, refresh_ARG)) {
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/* refreshes the visible LVs (which starts polling) */
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if (!_vgchange_refresh(cmd, vg))
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return ECMD_FAILED;
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}
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if (!arg_count(cmd, available_ARG) &&
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!arg_count(cmd, refresh_ARG) &&
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arg_count(cmd, monitor_ARG)) {
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/* -ay* will have already done monitoring changes */
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if (!_vgchange_monitoring(cmd, vg))
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return ECMD_FAILED;
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}
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|
|
if (!arg_count(cmd, refresh_ARG) &&
|
|
background_polling())
|
|
if (!_vgchange_background_polling(cmd, vg))
|
|
return ECMD_FAILED;
|
|
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
int vgchange(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
/* Update commands that can be combined */
|
|
int update =
|
|
arg_count(cmd, logicalvolume_ARG) ||
|
|
arg_count(cmd, maxphysicalvolumes_ARG) ||
|
|
arg_count(cmd, resizeable_ARG) ||
|
|
arg_count(cmd, deltag_ARG) ||
|
|
arg_count(cmd, addtag_ARG) ||
|
|
arg_count(cmd, uuid_ARG) ||
|
|
arg_count(cmd, physicalextentsize_ARG) ||
|
|
arg_count(cmd, clustered_ARG) ||
|
|
arg_count(cmd, alloc_ARG) ||
|
|
arg_count(cmd, vgmetadatacopies_ARG);
|
|
|
|
if (!update &&
|
|
!arg_count(cmd, available_ARG) &&
|
|
!arg_count(cmd, monitor_ARG) &&
|
|
!arg_count(cmd, poll_ARG) &&
|
|
!arg_count(cmd, refresh_ARG)) {
|
|
log_error("Need 1 or more of -a, -c, -l, -p, -s, -x, "
|
|
"--refresh, --uuid, --alloc, --addtag, --deltag, "
|
|
"--monitor, --poll, --vgmetadatacopies or "
|
|
"--metadatacopies");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, available_ARG) && arg_count(cmd, refresh_ARG)) {
|
|
log_error("Only one of -a and --refresh permitted.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if ((arg_count(cmd, ignorelockingfailure_ARG) ||
|
|
arg_count(cmd, sysinit_ARG)) && update) {
|
|
log_error("Only -a permitted with --ignorelockingfailure and --sysinit");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, available_ARG) &&
|
|
(arg_count(cmd, monitor_ARG) || arg_count(cmd, poll_ARG))) {
|
|
int activate = arg_uint_value(cmd, available_ARG, 0);
|
|
if (activate == CHANGE_AN || activate == CHANGE_ALN) {
|
|
log_error("Only -ay* allowed with --monitor or --poll.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
}
|
|
|
|
if (arg_count(cmd, poll_ARG) && arg_count(cmd, sysinit_ARG)) {
|
|
log_error("Only one of --poll and --sysinit permitted.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, available_ARG) == 1
|
|
&& arg_count(cmd, autobackup_ARG)) {
|
|
log_error("-A option not necessary with -a option");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, maxphysicalvolumes_ARG) &&
|
|
arg_sign_value(cmd, maxphysicalvolumes_ARG, 0) == SIGN_MINUS) {
|
|
log_error("MaxPhysicalVolumes may not be negative");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, physicalextentsize_ARG) &&
|
|
arg_sign_value(cmd, physicalextentsize_ARG, 0) == SIGN_MINUS) {
|
|
log_error("Physical extent size may not be negative");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
return process_each_vg(cmd, argc, argv, update ? READ_FOR_UPDATE : 0,
|
|
NULL, &vgchange_single);
|
|
}
|