mirror of
git://sourceware.org/git/lvm2.git
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375 lines
9.3 KiB
C
375 lines
9.3 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004 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 General Public License v.2.
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*
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* You should have received a copy of the GNU 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 _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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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_is_cow(lv))
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continue;
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/* Can't deactive 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->lvid.s))
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continue;
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} else if (activate == CHANGE_ALN) {
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if (!deactivate_lv_local(cmd, lv->lvid.s))
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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->lvid.s))
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continue;
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} else if (activate == CHANGE_ALY) {
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if (!activate_lv_local(cmd, lv->lvid.s))
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continue;
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} else if (!activate_lv(cmd, lv->lvid.s))
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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_available(struct cmd_context *cmd, struct volume_group *vg)
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{
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int lv_open, active;
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int available;
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int activate = 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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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 (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 = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, ALLOC_NORMAL);
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if (alloc == ALLOC_INHERIT) {
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log_error("Volume Group allocation policy cannot inherit "
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"from anything");
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return EINVALID_CMD_LINE;
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}
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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 (!archive(vg))
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return ECMD_FAILED;
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vg->alloc = alloc;
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if (!vg_write(vg) || !vg_commit(vg))
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return ECMD_FAILED;
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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 & 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 & 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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return ECMD_FAILED;
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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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return ECMD_FAILED;
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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 (!(vg->status & RESIZEABLE_VG)) {
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log_error("Volume group \"%s\" must be resizeable "
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"to change MaxLogicalVolume", vg->name);
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return ECMD_FAILED;
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}
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if (!(vg->fid->fmt->features & FMT_UNLIMITED_VOLS)) {
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if (!max_lv)
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max_lv = 255;
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else if (max_lv > 255) {
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log_error("MaxLogicalVolume limit is 255");
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return ECMD_FAILED;
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}
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}
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if (max_lv && max_lv < vg->lv_count) {
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log_error("MaxLogicalVolume is less than the current number "
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"%d of logical volume(s) for \"%s\"", vg->lv_count,
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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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return ECMD_FAILED;
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vg->max_lv = max_lv;
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if (!vg_write(vg) || !vg_commit(vg))
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return ECMD_FAILED;
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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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return ECMD_FAILED;
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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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return ECMD_FAILED;
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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, 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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return ECMD_FAILED;
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id_create(&vg->id);
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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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return ECMD_FAILED;
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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_single(struct cmd_context *cmd, const char *vg_name,
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struct volume_group *vg, int consistent,
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void *handle)
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{
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int r = ECMD_FAILED;
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if (!vg) {
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log_error("Unable to find volume group \"%s\"", vg_name);
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return ECMD_FAILED;
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}
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if (!consistent) {
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unlock_vg(cmd, vg_name);
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dev_close_all();
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log_error("Volume group \"%s\" inconsistent", vg_name);
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if (!(vg = recover_vg(cmd, vg_name, LCK_VG_WRITE)))
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return ECMD_FAILED;
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}
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if (!(vg->status & LVM_WRITE) && !arg_count(cmd, available_ARG)) {
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log_error("Volume group \"%s\" is read-only", vg->name);
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return ECMD_FAILED;
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}
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if (vg->status & 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 (arg_count(cmd, available_ARG))
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r = _vgchange_available(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, 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, 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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return r;
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}
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int vgchange(struct cmd_context *cmd, int argc, char **argv)
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{
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if (!
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(arg_count(cmd, available_ARG) + arg_count(cmd, logicalvolume_ARG) +
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arg_count(cmd, resizeable_ARG) + arg_count(cmd, deltag_ARG) +
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arg_count(cmd, addtag_ARG) + arg_count(cmd, uuid_ARG) +
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arg_count(cmd, alloc_ARG))) {
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log_error("One of -a, -l, -x, --alloc, --addtag, --deltag "
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"or --uuid required");
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return EINVALID_CMD_LINE;
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}
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/* FIXME Cope with several changes at once! */
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if (arg_count(cmd, available_ARG) + arg_count(cmd, logicalvolume_ARG) +
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arg_count(cmd, resizeable_ARG) + arg_count(cmd, deltag_ARG) +
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arg_count(cmd, addtag_ARG) + arg_count(cmd, alloc_ARG) +
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arg_count(cmd, uuid_ARG) > 1) {
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log_error("Only one of -a, -l, -x, --alloc, --addtag, --deltag "
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"or --uuid allowed");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, ignorelockingfailure_ARG) &&
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!arg_count(cmd, available_ARG)) {
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log_error("--ignorelockingfailure only available with -a");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, available_ARG) == 1
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&& arg_count(cmd, autobackup_ARG)) {
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log_error("-A option not necessary with -a option");
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return EINVALID_CMD_LINE;
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}
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return process_each_vg(cmd, argc, argv,
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(arg_count(cmd, available_ARG)) ?
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LCK_VG_READ : LCK_VG_WRITE, 0, NULL,
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&vgchange_single);
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}
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