mirror of
git://sourceware.org/git/lvm2.git
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651ff9b328
Make readonly locking available as locking type 4. Fix readonly locking to permit writeable global locks (for vgscan). (2.02.49)
597 lines
14 KiB
C
597 lines
14 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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static int _monitor_lvs_in_vg(struct cmd_context *cmd,
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struct volume_group *vg, int reg)
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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, &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, reg)) {
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continue;
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} else
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count++;
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}
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/*
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* returns the number of _new_ monitored devices
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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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const char *pvname;
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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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/* 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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/* 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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if (activate == CHANGE_AN) {
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if (!deactivate_lv(cmd, lv))
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continue;
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} else if (activate == CHANGE_ALN) {
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if (!deactivate_lv_local(cmd, lv))
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continue;
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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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continue;
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} else if (activate == CHANGE_ALY) {
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if (!activate_lv_local(cmd, lv))
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continue;
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} else if (!activate_lv(cmd, lv))
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continue;
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if ((lv->status & PVMOVE) &&
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(pvname = get_pvmove_pvname_from_lv_mirr(lv))) {
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log_verbose("Spawning background process for %s %s",
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lv->name, pvname);
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pvmove_poll(cmd, pvname, 1);
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continue;
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}
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count++;
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}
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return count;
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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 active, monitored;
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if ((active = lvs_in_vg_activated(vg)) &&
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dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
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monitored = _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode());
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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 ECMD_PROCESSED;
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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;
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int available;
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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 ECMD_FAILED;
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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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monitored = _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode());
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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 && _activate_lvs_in_vg(cmd, vg, available))
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log_verbose("Activated logical volumes in "
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"volume group \"%s\"", vg->name);
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if (!activate && _activate_lvs_in_vg(cmd, vg, available))
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log_verbose("Deactivated logical volumes in "
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"volume group \"%s\"", vg->name);
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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 ECMD_PROCESSED;
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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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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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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 ECMD_FAILED;
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}
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if (!vg_set_alloc_policy(vg, alloc)) {
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stack;
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return ECMD_FAILED;
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}
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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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return ECMD_PROCESSED;
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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_status(vg) & 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 ECMD_FAILED;
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}
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if (!resizeable && !(vg_status(vg) & 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 ECMD_FAILED;
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}
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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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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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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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return ECMD_PROCESSED;
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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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struct lv_list *lvl;
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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 ECMD_FAILED;
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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 ECMD_FAILED;
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}
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if (clustered) {
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dm_list_iterate_items(lvl, &vg->lvs) {
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if (lv_is_origin(lvl->lv) || lv_is_cow(lvl->lv)) {
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log_error("Volume group %s contains snapshots "
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"that are not yet supported.",
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vg->name);
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return ECMD_FAILED;
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}
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}
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}
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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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if (clustered)
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vg->status |= CLUSTERED;
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else
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vg->status &= ~CLUSTERED;
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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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return ECMD_PROCESSED;
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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 (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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if (!vg_set_max_lv(vg, max_lv)) {
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stack;
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return ECMD_FAILED;
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}
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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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return ECMD_PROCESSED;
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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 (arg_sign_value(cmd, maxphysicalvolumes_ARG, 0) == SIGN_MINUS) {
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log_error("MaxPhysicalVolumes may not be negative");
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return EINVALID_CMD_LINE;
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}
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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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if (!vg_set_max_pv(vg, max_pv)) {
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stack;
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return ECMD_FAILED;
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}
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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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return ECMD_PROCESSED;
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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_sign_value(cmd, physicalextentsize_ARG, 0) == SIGN_MINUS) {
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log_error("Physical extent size may not be negative");
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return EINVALID_CMD_LINE;
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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 ECMD_PROCESSED;
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}
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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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if (!vg_set_extent_size(vg, extent_size)) {
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stack;
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return EINVALID_CMD_LINE;
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}
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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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return ECMD_PROCESSED;
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}
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static int _vgchange_tag(struct cmd_context *cmd, struct volume_group *vg,
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int arg)
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{
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const char *tag;
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if (!(tag = arg_str_value(cmd, arg, NULL))) {
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log_error("Failed to get tag");
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return ECMD_FAILED;
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}
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if (!(vg->fid->fmt->features & FMT_TAGS)) {
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log_error("Volume group %s does not support tags", vg->name);
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return ECMD_FAILED;
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}
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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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}
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if ((arg == addtag_ARG)) {
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if (!str_list_add(cmd->mem, &vg->tags, tag)) {
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log_error("Failed to add tag %s to volume group %s",
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tag, vg->name);
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return ECMD_FAILED;
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}
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} else {
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if (!str_list_del(&vg->tags, tag)) {
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log_error("Failed to remove tag %s from volume group "
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"%s", tag, vg->name);
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return ECMD_FAILED;
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}
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}
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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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return ECMD_PROCESSED;
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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 ECMD_FAILED;
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}
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if (!archive(vg)) {
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stack;
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return ECMD_FAILED;
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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 ECMD_FAILED;
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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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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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return ECMD_PROCESSED;
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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 ECMD_FAILED;
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}
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return ECMD_PROCESSED;
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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 r = ECMD_FAILED;
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if (vg_read_error(vg)) {
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stack;
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return ECMD_FAILED;
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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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init_dmeventd_monitor(arg_int_value(cmd, monitor_ARG,
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(is_static() || arg_count(cmd, ignoremonitoring_ARG)) ?
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DMEVENTD_MONITOR_IGNORE : DEFAULT_DMEVENTD_MONITOR));
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if (arg_count(cmd, available_ARG))
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r = _vgchange_available(cmd, vg);
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else if (arg_count(cmd, monitor_ARG))
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r = _vgchange_monitoring(cmd, vg);
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else if (arg_count(cmd, resizeable_ARG))
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r = _vgchange_resizeable(cmd, vg);
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else if (arg_count(cmd, logicalvolume_ARG))
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r = _vgchange_logicalvolume(cmd, vg);
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else if (arg_count(cmd, maxphysicalvolumes_ARG))
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r = _vgchange_physicalvolumes(cmd, vg);
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else if (arg_count(cmd, addtag_ARG))
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r = _vgchange_tag(cmd, vg, addtag_ARG);
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else if (arg_count(cmd, deltag_ARG))
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r = _vgchange_tag(cmd, vg, deltag_ARG);
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else if (arg_count(cmd, physicalextentsize_ARG))
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r = _vgchange_pesize(cmd, vg);
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else if (arg_count(cmd, uuid_ARG))
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r = _vgchange_uuid(cmd, vg);
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else if (arg_count(cmd, alloc_ARG))
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r = _vgchange_alloc(cmd, vg);
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else if (arg_count(cmd, clustered_ARG))
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r = _vgchange_clustered(cmd, vg);
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else if (arg_count(cmd, refresh_ARG))
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r = _vgchange_refresh(cmd, vg);
|
|
|
|
return r;
|
|
}
|
|
|
|
int vgchange(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
if (!
|
|
(arg_count(cmd, available_ARG) + 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, monitor_ARG) + arg_count(cmd, refresh_ARG))) {
|
|
log_error("One of -a, -c, -l, -p, -s, -x, --refresh, "
|
|
"--uuid, --alloc, --addtag or --deltag required");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
/* FIXME Cope with several changes at once! */
|
|
if (arg_count(cmd, available_ARG) + 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, alloc_ARG) +
|
|
arg_count(cmd, uuid_ARG) + arg_count(cmd, clustered_ARG) +
|
|
arg_count(cmd, physicalextentsize_ARG) > 1) {
|
|
log_error("Only one of -a, -c, -l, -p, -s, -x, --uuid, "
|
|
"--alloc, --addtag or --deltag allowed");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_count(cmd, ignorelockingfailure_ARG) &&
|
|
!arg_count(cmd, available_ARG)) {
|
|
log_error("--ignorelockingfailure only available with -a");
|
|
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;
|
|
}
|
|
|
|
return process_each_vg(cmd, argc, argv,
|
|
(arg_count(cmd, available_ARG)) ?
|
|
0 : READ_FOR_UPDATE,
|
|
NULL,
|
|
&vgchange_single);
|
|
}
|