mirror of
git://sourceware.org/git/lvm2.git
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534 lines
13 KiB
C
534 lines
13 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 lvchange_permission(struct cmd_context *cmd,
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struct logical_volume *lv)
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{
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uint32_t lv_access;
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lv_access = arg_uint_value(cmd, permission_ARG, 0);
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if ((lv_access & LVM_WRITE) && (lv->status & LVM_WRITE)) {
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log_error("Logical volume \"%s\" is already writable",
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lv->name);
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return 0;
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}
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if (!(lv_access & LVM_WRITE) && !(lv->status & LVM_WRITE)) {
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log_error("Logical volume \"%s\" is already read only",
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lv->name);
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return 0;
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}
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if (lv_access & LVM_WRITE) {
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lv->status |= LVM_WRITE;
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log_verbose("Setting logical volume \"%s\" read/write",
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lv->name);
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} else {
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lv->status &= ~LVM_WRITE;
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log_verbose("Setting logical volume \"%s\" read-only",
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lv->name);
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}
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log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
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if (!vg_write(lv->vg)) {
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stack;
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return 0;
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}
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backup(lv->vg);
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if (!suspend_lv(cmd, lv)) {
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log_error("Failed to lock %s", lv->name);
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vg_revert(lv->vg);
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return 0;
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}
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if (!vg_commit(lv->vg)) {
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resume_lv(cmd, lv);
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return 0;
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}
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log_very_verbose("Updating permissions for \"%s\" in kernel", lv->name);
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if (!resume_lv(cmd, lv)) {
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log_error("Problem reactivating %s", lv->name);
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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 lvchange_availability(struct cmd_context *cmd,
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struct logical_volume *lv)
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{
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int activate;
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const char *pvname;
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activate = arg_uint_value(cmd, available_ARG, 0);
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if (activate == CHANGE_ALN) {
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log_verbose("Deactivating logical volume \"%s\" locally",
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lv->name);
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if (!deactivate_lv_local(cmd, lv)) {
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stack;
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return 0;
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}
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} else if (activate == CHANGE_AN) {
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log_verbose("Deactivating logical volume \"%s\"", lv->name);
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if (!deactivate_lv(cmd, lv)) {
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stack;
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return 0;
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}
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} else {
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if (lockingfailed() && (lv->vg->status & CLUSTERED)) {
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log_verbose("Locking failed: ignoring clustered "
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"logical volume %s", lv->name);
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return 0;
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}
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if (lv_is_origin(lv) || (activate == CHANGE_AE)) {
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log_verbose("Activating logical volume \"%s\" "
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"exclusively", lv->name);
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if (!activate_lv_excl(cmd, lv)) {
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stack;
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return 0;
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}
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} else if (activate == CHANGE_ALY) {
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log_verbose("Activating logical volume \"%s\" locally",
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lv->name);
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if (!activate_lv_local(cmd, lv)) {
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stack;
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return 0;
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}
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} else {
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log_verbose("Activating logical volume \"%s\"",
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lv->name);
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if (!activate_lv(cmd, lv)) {
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stack;
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return 0;
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}
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}
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if ((lv->status & LOCKED) &&
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(pvname = get_pvmove_pvname_from_lv(lv))) {
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log_verbose("Spawning background pvmove process for %s",
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pvname);
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pvmove_poll(cmd, pvname, 1);
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}
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}
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return 1;
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}
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static int lvchange_refresh(struct cmd_context *cmd, struct logical_volume *lv)
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{
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log_verbose("Refreshing logical volume \"%s\" (if active)", lv->name);
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if (!suspend_lv(cmd, lv) || !resume_lv(cmd, lv))
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return 0;
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return 1;
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}
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static int lvchange_alloc(struct cmd_context *cmd, struct logical_volume *lv)
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{
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int want_contiguous = 0;
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alloc_policy_t alloc;
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want_contiguous = strcmp(arg_str_value(cmd, contiguous_ARG, "n"), "n");
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alloc = want_contiguous ? ALLOC_CONTIGUOUS : ALLOC_INHERIT;
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alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, alloc);
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if (alloc == lv->alloc) {
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log_error("Allocation policy of logical volume \"%s\" is "
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"already %s", lv->name, get_alloc_string(alloc));
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return 0;
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}
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lv->alloc = alloc;
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/* FIXME If contiguous, check existing extents already are */
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log_verbose("Setting contiguous allocation policy for \"%s\" to %s",
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lv->name, get_alloc_string(alloc));
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log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
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if (!vg_write(lv->vg)) {
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stack;
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return 0;
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}
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backup(lv->vg);
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/* No need to suspend LV for this change */
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if (!vg_commit(lv->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 lvchange_readahead(struct cmd_context *cmd,
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struct logical_volume *lv)
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{
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unsigned int read_ahead = 0;
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read_ahead = arg_uint_value(cmd, readahead_ARG, 0);
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/******* FIXME Ranges?
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if (read_ahead < LVM_MIN_READ_AHEAD || read_ahead > LVM_MAX_READ_AHEAD) {
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log_error("read ahead sector argument is invalid");
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return 0;
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}
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********/
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if (lv->read_ahead == read_ahead) {
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log_error("Read ahead is already %u for \"%s\"",
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read_ahead, lv->name);
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return 0;
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}
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lv->read_ahead = read_ahead;
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log_verbose("Setting read ahead to %u for \"%s\"", read_ahead,
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lv->name);
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log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
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if (!vg_write(lv->vg)) {
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stack;
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return 0;
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}
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backup(lv->vg);
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if (!suspend_lv(cmd, lv)) {
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log_error("Failed to lock %s", lv->name);
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vg_revert(lv->vg);
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return 0;
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}
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if (!vg_commit(lv->vg)) {
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resume_lv(cmd, lv);
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return 0;
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}
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log_very_verbose("Updating permissions for \"%s\" in kernel", lv->name);
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if (!resume_lv(cmd, lv)) {
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log_error("Problem reactivating %s", lv->name);
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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 lvchange_persistent(struct cmd_context *cmd,
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struct logical_volume *lv)
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{
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struct lvinfo info;
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int active = 0;
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if (!strcmp(arg_str_value(cmd, persistent_ARG, "n"), "n")) {
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if (!(lv->status & FIXED_MINOR)) {
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log_error("Minor number is already not persistent "
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"for \"%s\"", lv->name);
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return 0;
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}
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lv->status &= ~FIXED_MINOR;
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lv->minor = -1;
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lv->major = -1;
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log_verbose("Disabling persistent device number for \"%s\"",
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lv->name);
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} else {
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if (!arg_count(cmd, minor_ARG) && lv->minor < 0) {
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log_error("Minor number must be specified with -My");
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return 0;
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}
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if (!arg_count(cmd, major_ARG) && lv->major < 0) {
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log_error("Major number must be specified with -My");
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return 0;
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}
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if (lv_info(cmd, lv, &info, 0) && info.exists &&
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!arg_count(cmd, force_ARG)) {
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if (yes_no_prompt("Logical volume %s will be "
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"deactivated temporarily. "
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"Continue? [y/n]: ", lv->name) == 'n') {
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log_print("%s device number not changed.",
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lv->name);
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return 0;
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}
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active = 1;
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}
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log_verbose("Ensuring %s is inactive.", lv->name);
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if (!deactivate_lv(cmd, lv)) {
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log_error("%s: deactivation failed", lv->name);
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return 0;
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}
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lv->status |= FIXED_MINOR;
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lv->minor = arg_int_value(cmd, minor_ARG, lv->minor);
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lv->major = arg_int_value(cmd, major_ARG, lv->major);
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log_verbose("Setting persistent device number to (%d, %d) "
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"for \"%s\"", lv->major, lv->minor, lv->name);
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if (active) {
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log_verbose("Re-activating logical volume \"%s\"",
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lv->name);
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if (!activate_lv(cmd, lv)) {
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log_error("%s: reactivation failed", lv->name);
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return 0;
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}
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}
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}
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log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
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if (!vg_write(lv->vg)) {
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stack;
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return 0;
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}
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backup(lv->vg);
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if (!suspend_lv(cmd, lv)) {
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log_error("Failed to lock %s", lv->name);
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vg_revert(lv->vg);
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return 0;
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}
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if (!vg_commit(lv->vg)) {
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resume_lv(cmd, lv);
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return 0;
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}
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log_very_verbose("Updating permissions for \"%s\" in kernel", lv->name);
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if (!resume_lv(cmd, lv)) {
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log_error("Problem reactivating %s", lv->name);
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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 lvchange_tag(struct cmd_context *cmd, struct logical_volume *lv,
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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 0;
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}
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if (!(lv->vg->fid->fmt->features & FMT_TAGS)) {
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log_error("Logical volume %s/%s does not support tags",
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lv->vg->name, lv->name);
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return 0;
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}
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if ((arg == addtag_ARG)) {
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if (!str_list_add(cmd->mem, &lv->tags, tag)) {
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log_error("Failed to add tag %s to %s/%s",
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tag, lv->vg->name, lv->name);
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return 0;
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}
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} else {
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if (!str_list_del(&lv->tags, tag)) {
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log_error("Failed to remove tag %s from %s/%s",
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tag, lv->vg->name, lv->name);
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return 0;
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}
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}
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log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
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if (!vg_write(lv->vg)) {
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stack;
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return 0;
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}
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backup(lv->vg);
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/* No need to suspend LV for this change */
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if (!vg_commit(lv->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 lvchange_single(struct cmd_context *cmd, struct logical_volume *lv,
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void *handle)
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{
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int doit = 0;
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int archived = 0;
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if (!(lv->vg->status & LVM_WRITE) &&
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(arg_count(cmd, contiguous_ARG) || arg_count(cmd, permission_ARG) ||
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arg_count(cmd, readahead_ARG) || arg_count(cmd, persistent_ARG) ||
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arg_count(cmd, alloc_ARG))) {
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log_error("Only -a permitted with read-only volume "
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"group \"%s\"", lv->vg->name);
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return EINVALID_CMD_LINE;
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}
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if (lv_is_origin(lv) &&
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(arg_count(cmd, contiguous_ARG) || arg_count(cmd, permission_ARG) ||
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arg_count(cmd, readahead_ARG) || arg_count(cmd, persistent_ARG) ||
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arg_count(cmd, alloc_ARG))) {
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log_error("Can't change logical volume \"%s\" under snapshot",
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lv->name);
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return ECMD_FAILED;
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}
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if (lv_is_cow(lv)) {
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log_error("Can't change snapshot logical volume \"%s\"",
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lv->name);
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return ECMD_FAILED;
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}
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if (lv->status & PVMOVE) {
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log_error("Unable to change pvmove LV %s", lv->name);
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if (arg_count(cmd, available_ARG))
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log_error("Use 'pvmove --abort' to abandon a pvmove");
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return ECMD_FAILED;
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}
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if (lv->status & MIRROR_LOG) {
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log_error("Unable to change mirror log LV %s directly", lv->name);
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return ECMD_FAILED;
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}
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if (lv->status & MIRROR_IMAGE) {
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log_error("Unable to change mirror image LV %s directly",
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lv->name);
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return ECMD_FAILED;
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}
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if (!(lv->status & VISIBLE_LV)) {
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log_error("Unable to change internal LV %s directly",
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lv->name);
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return ECMD_FAILED;
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}
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/* access permission change */
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if (arg_count(cmd, permission_ARG)) {
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if (!archive(lv->vg))
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return ECMD_FAILED;
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archived = 1;
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doit += lvchange_permission(cmd, lv);
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}
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/* allocation policy change */
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if (arg_count(cmd, contiguous_ARG) || arg_count(cmd, alloc_ARG)) {
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if (!archived && !archive(lv->vg))
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return ECMD_FAILED;
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archived = 1;
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doit += lvchange_alloc(cmd, lv);
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}
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/* read ahead sector change */
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if (arg_count(cmd, readahead_ARG)) {
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if (!archived && !archive(lv->vg))
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return ECMD_FAILED;
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archived = 1;
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doit += lvchange_readahead(cmd, lv);
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}
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/* read ahead sector change */
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if (arg_count(cmd, persistent_ARG)) {
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if (!archived && !archive(lv->vg))
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return ECMD_FAILED;
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archived = 1;
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doit += lvchange_persistent(cmd, lv);
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}
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/* add tag */
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if (arg_count(cmd, addtag_ARG)) {
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if (!archived && !archive(lv->vg))
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return ECMD_FAILED;
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archived = 1;
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doit += lvchange_tag(cmd, lv, addtag_ARG);
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}
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/* del tag */
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if (arg_count(cmd, deltag_ARG)) {
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if (!archived && !archive(lv->vg))
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return ECMD_FAILED;
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archived = 1;
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doit += lvchange_tag(cmd, lv, deltag_ARG);
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}
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if (doit)
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log_print("Logical volume \"%s\" changed", lv->name);
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/* availability change */
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if (arg_count(cmd, available_ARG))
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if (!lvchange_availability(cmd, lv))
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return ECMD_FAILED;
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if (arg_count(cmd, refresh_ARG))
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if (!lvchange_refresh(cmd, lv))
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return ECMD_FAILED;
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return ECMD_PROCESSED;
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}
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int lvchange(struct cmd_context *cmd, int argc, char **argv)
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{
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if (!arg_count(cmd, available_ARG) && !arg_count(cmd, contiguous_ARG)
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&& !arg_count(cmd, permission_ARG) && !arg_count(cmd, readahead_ARG)
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&& !arg_count(cmd, minor_ARG) && !arg_count(cmd, major_ARG)
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&& !arg_count(cmd, persistent_ARG) && !arg_count(cmd, addtag_ARG)
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&& !arg_count(cmd, deltag_ARG) && !arg_count(cmd, refresh_ARG)
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&& !arg_count(cmd, alloc_ARG)) {
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log_error("One or more of -a, -C, -j, -m, -M, -p, -r, "
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"--refresh, --alloc, --addtag or --deltag required");
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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, contiguous_ARG) || arg_count(cmd, permission_ARG) ||
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arg_count(cmd, readahead_ARG) || arg_count(cmd, persistent_ARG) ||
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arg_count(cmd, addtag_ARG) || arg_count(cmd, deltag_ARG) ||
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arg_count(cmd, refresh_ARG) || arg_count(cmd, alloc_ARG))) {
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log_error("Only -a permitted with --ignorelockingfailure");
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return EINVALID_CMD_LINE;
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}
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if (!argc) {
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log_error("Please give logical volume path(s)");
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return EINVALID_CMD_LINE;
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}
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if ((arg_count(cmd, minor_ARG) || arg_count(cmd, major_ARG)) &&
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!arg_count(cmd, persistent_ARG)) {
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log_error("--major and --minor require -My");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, minor_ARG) && argc != 1) {
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log_error("Only give one logical volume when specifying minor");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, contiguous_ARG) && arg_count(cmd, alloc_ARG)) {
|
|
log_error("Only one of --alloc and --contiguous permitted");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
return process_each_lv(cmd, argc, argv, LCK_VG_WRITE, NULL,
|
|
&lvchange_single);
|
|
}
|