mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-28 20:25:52 +03:00
328 lines
7.1 KiB
C
328 lines
7.1 KiB
C
|
/*
|
||
|
* Copyright (C) 2009-2010 Red Hat, Inc. All rights reserved.
|
||
|
*
|
||
|
* This file is part of LVM2.
|
||
|
*
|
||
|
* This copyrighted material is made available to anyone wishing to use,
|
||
|
* modify, copy, or redistribute it subject to the terms and conditions
|
||
|
* of the GNU Lesser General Public License v.2.1.
|
||
|
*
|
||
|
* You should have received a copy of the GNU Lesser General Public License
|
||
|
* along with this program; if not, write to the Free Software Foundation,
|
||
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
*/
|
||
|
|
||
|
#include "lib.h"
|
||
|
#include "metadata.h"
|
||
|
#include "segtype.h"
|
||
|
|
||
|
/* Add lv as replicator_dev device */
|
||
|
int replicator_dev_add_rimage(struct replicator_device *rdev,
|
||
|
struct logical_volume *lv)
|
||
|
{
|
||
|
if (!lv || !rdev)
|
||
|
return_0;
|
||
|
|
||
|
if (lv_is_rimage(lv)) {
|
||
|
log_error("Logical volume %s is already part of other "
|
||
|
"replicator.", lv->name);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (rdev->lv) {
|
||
|
log_error("Logical volume %s can not be attached to an "
|
||
|
"already defined replicator device", lv->name);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
lv_set_hidden(lv);
|
||
|
lv->rdevice = rdev;
|
||
|
rdev->lv = lv;
|
||
|
|
||
|
return add_seg_to_segs_using_this_lv(lv, rdev->replicator_dev);
|
||
|
}
|
||
|
|
||
|
/* Remove lv from replicator_dev device */
|
||
|
struct logical_volume *replicator_dev_remove_rimage(struct replicator_device *rdev)
|
||
|
{
|
||
|
struct logical_volume *lv;
|
||
|
|
||
|
if (!rdev || !rdev->lv)
|
||
|
return_NULL;
|
||
|
|
||
|
lv = rdev->lv;
|
||
|
if (!remove_seg_from_segs_using_this_lv(lv, rdev->replicator_dev))
|
||
|
return_NULL;
|
||
|
|
||
|
/* FIXME: - check for site references */
|
||
|
rdev->lv = NULL;
|
||
|
lv->rdevice = NULL;
|
||
|
lv_set_visible(lv);
|
||
|
|
||
|
return lv;
|
||
|
}
|
||
|
|
||
|
int replicator_dev_add_slog(struct replicator_device *rdev,
|
||
|
struct logical_volume *slog)
|
||
|
{
|
||
|
if (!slog || !rdev)
|
||
|
return_0;
|
||
|
|
||
|
if (rdev->slog) {
|
||
|
log_error("Replicator device in site %s already has sync log.",
|
||
|
rdev->rsite->name);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (slog->rdevice) {
|
||
|
log_error("Sync log %s is already used by replicator %s.",
|
||
|
slog->name, slog->rdevice->rsite->replicator->name);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
lv_set_hidden(slog);
|
||
|
slog->rdevice = rdev;
|
||
|
rdev->slog = slog;
|
||
|
|
||
|
return add_seg_to_segs_using_this_lv(slog, rdev->replicator_dev);
|
||
|
}
|
||
|
|
||
|
struct logical_volume *replicator_dev_remove_slog(struct replicator_device *rdev)
|
||
|
{
|
||
|
struct logical_volume *lv;
|
||
|
|
||
|
if (!rdev)
|
||
|
return_NULL;
|
||
|
|
||
|
lv = rdev->slog;
|
||
|
if (!lv) {
|
||
|
log_error("Replicator device in site %s does not have sync log.",
|
||
|
rdev->rsite->name);
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
if (!remove_seg_from_segs_using_this_lv(lv, rdev->replicator_dev))
|
||
|
return_NULL;
|
||
|
|
||
|
rdev->slog = NULL;
|
||
|
lv->rdevice = NULL;
|
||
|
lv_set_visible(lv);
|
||
|
|
||
|
return lv;
|
||
|
}
|
||
|
|
||
|
int replicator_add_replicator_dev(struct logical_volume *replicator_lv,
|
||
|
struct lv_segment *replicator_dev_seg)
|
||
|
{
|
||
|
if (!replicator_lv)
|
||
|
return_0;
|
||
|
|
||
|
if (!(replicator_lv->status & REPLICATOR)) {
|
||
|
dm_list_init(&replicator_lv->rsites);
|
||
|
lv_set_hidden(replicator_lv);
|
||
|
replicator_lv->status |= REPLICATOR;
|
||
|
}
|
||
|
|
||
|
if (!replicator_dev_seg)
|
||
|
return 1;
|
||
|
|
||
|
if (replicator_dev_seg->replicator) {
|
||
|
log_error("Replicator device %s is already part of replicator.",
|
||
|
replicator_dev_seg->lv->name);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
replicator_dev_seg->replicator = replicator_lv;
|
||
|
|
||
|
return add_seg_to_segs_using_this_lv(replicator_lv, replicator_dev_seg);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Returns rimage ?? lv upon succeful detach of device
|
||
|
* entire LV entry should be removed by this crootall ??
|
||
|
*/
|
||
|
struct logical_volume *replicator_remove_replicator_dev(struct lv_segment *replicator_dev_seg)
|
||
|
{
|
||
|
struct logical_volume *lv = NULL;
|
||
|
|
||
|
log_error("FIXME: not implemented.");
|
||
|
#if 0
|
||
|
/* FIXME: - this is going to be complex.... */
|
||
|
if (!replicator_dev_seg)
|
||
|
return_NULL;
|
||
|
|
||
|
/* if slog or rimage - exit */
|
||
|
|
||
|
if (!remove_seg_from_segs_using_this_lv(lv, replicator_seg))
|
||
|
return_NULL;
|
||
|
|
||
|
replicator_seg->rlog_lv = NULL;
|
||
|
lv->status &= ~REPLICATOR_LOG;
|
||
|
lv_set_visible(lv);
|
||
|
#endif
|
||
|
|
||
|
return lv;
|
||
|
}
|
||
|
|
||
|
int replicator_add_rlog(struct lv_segment *replicator_seg,
|
||
|
struct logical_volume *rlog_lv)
|
||
|
{
|
||
|
if (!rlog_lv)
|
||
|
return_0;
|
||
|
|
||
|
if (rlog_lv->status & REPLICATOR_LOG) {
|
||
|
log_error("Rlog device %s is already used.", rlog_lv->name);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
lv_set_hidden(rlog_lv);
|
||
|
rlog_lv->status |= REPLICATOR_LOG;
|
||
|
replicator_seg->rlog_lv = rlog_lv;
|
||
|
|
||
|
return add_seg_to_segs_using_this_lv(rlog_lv, replicator_seg);
|
||
|
}
|
||
|
|
||
|
struct logical_volume *replicator_remove_rlog(struct lv_segment *replicator_seg)
|
||
|
{
|
||
|
struct logical_volume *lv;
|
||
|
|
||
|
if (!replicator_seg)
|
||
|
return_0;
|
||
|
|
||
|
if (!(lv = replicator_seg->rlog_lv)) {
|
||
|
log_error("Replog segment %s does not have rlog.",
|
||
|
replicator_seg->lv->name);
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
if (!remove_seg_from_segs_using_this_lv(lv, replicator_seg))
|
||
|
return_NULL;
|
||
|
|
||
|
replicator_seg->rlog_lv = NULL;
|
||
|
lv->status &= ~REPLICATOR_LOG;
|
||
|
lv_set_visible(lv);
|
||
|
|
||
|
return lv;
|
||
|
}
|
||
|
|
||
|
|
||
|
#if 0
|
||
|
/*
|
||
|
* Create new LV to pretend the original LV
|
||
|
* this target will have a 'replicator' segment
|
||
|
*/
|
||
|
int lv_add_replicator(struct logical_volume *origin, const char *rep_suffix)
|
||
|
{
|
||
|
struct logical_volume *rep_lv;
|
||
|
char *name;
|
||
|
size_t slen;
|
||
|
|
||
|
if (!(name = strstr(origin->name, rep_suffix))) {
|
||
|
log_error("Failed to find replicator suffix %s in LV name %s",
|
||
|
rep_suffix, origin->name);
|
||
|
return 0;
|
||
|
}
|
||
|
slen = (size_t)(name - origin->name);
|
||
|
name = alloca(slen + 1);
|
||
|
memcpy(name, origin->name, slen);
|
||
|
name[slen] = 0;
|
||
|
|
||
|
if ((rep_lv = find_lv(origin->vg, name))) {
|
||
|
rep_lv->status |= VIRTUAL;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
if (!(rep_lv = lv_create_empty(name, &origin->lvid,
|
||
|
LVM_READ | LVM_WRITE | VISIBLE_LV,
|
||
|
ALLOC_INHERIT, origin->vg)))
|
||
|
return_0;
|
||
|
|
||
|
if (!lv_add_virtual_segment(rep_lv, 0, origin->le_count,
|
||
|
get_segtype_from_string(origin->vg->cmd,
|
||
|
"error")))
|
||
|
return_0;
|
||
|
|
||
|
rep_lv->status |= VIRTUAL;
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
int lv_remove_replicator(struct logical_volume *lv)
|
||
|
{
|
||
|
return 1;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
/**
|
||
|
* Is this segment part of active replicator
|
||
|
*/
|
||
|
int lv_is_active_replicator_dev(const struct logical_volume *lv)
|
||
|
{
|
||
|
return ((lv->status & REPLICATOR) &&
|
||
|
lv->rdevice &&
|
||
|
lv->rdevice->rsite &&
|
||
|
lv->rdevice->rsite->state == REPLICATOR_STATE_ACTIVE);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Is this LV replicator control device
|
||
|
*/
|
||
|
int lv_is_replicator(const struct logical_volume *lv)
|
||
|
{
|
||
|
return ((lv->status & REPLICATOR) &&
|
||
|
!dm_list_empty(&lv->segments) &&
|
||
|
seg_is_replicator(first_seg(lv)));
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Is this LV replicator device
|
||
|
*/
|
||
|
int lv_is_replicator_dev(const struct logical_volume *lv)
|
||
|
{
|
||
|
return ((lv->status & REPLICATOR) &&
|
||
|
!dm_list_empty(&lv->segments) &&
|
||
|
seg_is_replicator_dev(first_seg(lv)));
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Is this LV replicated origin lv
|
||
|
*/
|
||
|
int lv_is_rimage(const struct logical_volume *lv)
|
||
|
{
|
||
|
return (lv->rdevice && lv->rdevice->lv == lv);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Is this LV rlog
|
||
|
*/
|
||
|
int lv_is_rlog(const struct logical_volume *lv)
|
||
|
{
|
||
|
return (lv->status & REPLICATOR_LOG);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Is this LV sync log
|
||
|
*/
|
||
|
int lv_is_slog(const struct logical_volume *lv)
|
||
|
{
|
||
|
return (lv->rdevice && lv->rdevice->slog == lv);
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Returns first replicator-dev in site in case the LV is replicator-dev,
|
||
|
* NULL otherwise
|
||
|
*/
|
||
|
struct logical_volume *first_replicator_dev(const struct logical_volume *lv)
|
||
|
{
|
||
|
struct replicator_device *rdev;
|
||
|
struct replicator_site *rsite;
|
||
|
|
||
|
if (lv_is_replicator_dev(lv))
|
||
|
dm_list_iterate_items(rsite, &first_seg(lv)->replicator->rsites) {
|
||
|
dm_list_iterate_items(rdev, &rsite->rdevices)
|
||
|
return rdev->replicator_dev->lv;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return NULL;
|
||
|
}
|