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eb283dcbc6
This patch update lv_t handle to be consistent with lvm_t - define as a pointer to internal struct logical_volume. Author: Dave Wysochanski <dwysocha@redhat.com>
195 lines
4.6 KiB
C
195 lines
4.6 KiB
C
/*
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* Copyright (C) 2008,2009 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 "lib.h"
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#include "lvm2app.h"
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#include "metadata-exported.h"
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#include "lvm-string.h"
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#include "defaults.h"
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#include "segtype.h"
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#include "locking.h"
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#include "activate.h"
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#include <string.h>
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/* FIXME: have lib/report/report.c _disp function call lv_size()? */
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uint64_t lvm_lv_get_size(const lv_t lv)
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{
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return lv_size(lv);
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}
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char *lvm_lv_get_uuid(const lv_t lv)
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{
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char uuid[64] __attribute((aligned(8)));
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if (!id_write_format(&lv->lvid.id[1], uuid, sizeof(uuid))) {
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log_error("Internal error converting uuid");
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return NULL;
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}
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return strndup((const char *)uuid, 64);
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}
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char *lvm_lv_get_name(const lv_t lv)
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{
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char *name;
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name = dm_malloc(NAME_LEN + 1);
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strncpy(name, (const char *)lv->name, NAME_LEN);
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name[NAME_LEN] = '\0';
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return name;
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}
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uint64_t lvm_lv_is_active(const lv_t lv)
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{
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struct lvinfo info;
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if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
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info.exists && info.live_table)
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return 1;
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return 0;
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}
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uint64_t lvm_lv_is_suspended(const lv_t lv)
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{
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struct lvinfo info;
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if (lv_info(lv->vg->cmd, lv, &info, 1, 0) &&
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info.exists && info.suspended)
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return 1;
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return 0;
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}
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/* Set defaults for non-segment specific LV parameters */
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static void _lv_set_default_params(struct lvcreate_params *lp,
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vg_t vg, const char *lvname,
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uint64_t extents)
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{
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lp->zero = 1;
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lp->major = -1;
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lp->minor = -1;
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lp->vg_name = vg->name;
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lp->lv_name = lvname; /* FIXME: check this for safety */
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lp->pvh = &vg->pvs;
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lp->extents = extents;
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lp->permission = LVM_READ | LVM_WRITE;
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lp->read_ahead = DM_READ_AHEAD_NONE;
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lp->alloc = ALLOC_INHERIT;
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lp->tag = NULL;
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}
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/* Set default for linear segment specific LV parameters */
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static void _lv_set_default_linear_params(struct cmd_context *cmd,
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struct lvcreate_params *lp)
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{
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lp->segtype = get_segtype_from_string(cmd, "striped");
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lp->stripes = 1;
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lp->stripe_size = DEFAULT_STRIPESIZE * 2;
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}
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/*
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* FIXME: This function should probably not commit to disk but require calling
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* lvm_vg_write. However, this appears to be non-trivial change until
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* lv_create_single is refactored by segtype.
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*/
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lv_t lvm_vg_create_lv_linear(vg_t vg, const char *name, uint64_t size)
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{
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struct lvcreate_params lp;
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uint64_t extents;
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struct lv_list *lvl;
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if (vg_read_error(vg))
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return NULL;
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if (!vg_check_write_mode(vg))
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return NULL;
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memset(&lp, 0, sizeof(lp));
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extents = extents_from_size(vg->cmd, size, vg->extent_size);
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_lv_set_default_params(&lp, vg, name, extents);
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_lv_set_default_linear_params(vg->cmd, &lp);
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if (!lv_create_single(vg, &lp))
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return NULL;
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lvl = find_lv_in_vg(vg, name);
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if (!lvl)
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return NULL;
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return (lv_t) lvl->lv;
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}
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/*
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* FIXME: This function should probably not commit to disk but require calling
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* lvm_vg_write.
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*/
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int lvm_vg_remove_lv(lv_t lv)
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{
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if (!lv || !lv->vg || vg_read_error(lv->vg))
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return -1;
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if (!vg_check_write_mode(lv->vg))
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return -1;
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if (!lv_remove_single(lv->vg->cmd, lv, DONT_PROMPT))
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return -1;
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return 0;
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}
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int lvm_lv_activate(lv_t lv)
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{
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if (!lv || !lv->vg || vg_read_error(lv->vg) || !lv->vg->cmd)
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return -1;
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/* FIXME: handle pvmove stuff later */
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if (lv->status & LOCKED) {
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log_error("Unable to activate locked LV");
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return -1;
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}
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/* FIXME: handle lvconvert stuff later */
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if (lv->status & CONVERTING) {
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log_error("Unable to activate LV with in-progress lvconvert");
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return -1;
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}
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if (lv_is_origin(lv)) {
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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(lv->vg->cmd, lv)) {
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log_error("Activate exclusive failed.");
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return -1;
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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(lv->vg->cmd, lv)) {
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log_error("Activate failed.");
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return -1;
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}
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}
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return 0;
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}
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int lvm_lv_deactivate(lv_t lv)
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{
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if (!lv || !lv->vg || vg_read_error(lv->vg) || !lv->vg->cmd)
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return -1;
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log_verbose("Deactivating logical volume \"%s\"", lv->name);
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if (!deactivate_lv(lv->vg->cmd, lv)) {
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log_error("Deactivate failed.");
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return -1;
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}
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return 0;
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}
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int lvm_lv_resize(const lv_t lv, uint64_t new_size)
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{
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/* FIXME: add lv resize code here */
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log_error("NOT IMPLEMENTED YET");
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return -1;
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}
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