mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
2caa558e7c
Code adds better support for monitoring of thin pool devices. update_pool_lv uses DMEVENTD_MONITOR_IGNORE to not manipulate with monitoring. vgchange & lvchange are checking real thin pool device for existance as we are using _tpool real device and visible LV pool device might not be even active (_tpool is activated implicitely for any thin volume). monitor_dev_for_events is another _lv_postorder like code it might be worth to think about reusing it here - for now update the code to properly monitory thin volume deps. For unmonitoring add extra code to check the usage of thin pool - in case it's in use unmonitoring of thin volume is skipped.
1932 lines
44 KiB
C
1932 lines
44 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2012 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 "metadata.h"
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#include "activate.h"
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#include "memlock.h"
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#include "display.h"
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#include "fs.h"
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#include "lvm-exec.h"
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#include "lvm-file.h"
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#include "lvm-string.h"
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#include "toolcontext.h"
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#include "dev_manager.h"
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#include "str_list.h"
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#include "config.h"
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#include "filter.h"
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#include "segtype.h"
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#include "sharedlib.h"
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#include <limits.h>
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#include <fcntl.h>
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#include <unistd.h>
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#define _skip(fmt, args...) log_very_verbose("Skipping: " fmt , ## args)
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int lvm1_present(struct cmd_context *cmd)
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{
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static char path[PATH_MAX];
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if (dm_snprintf(path, sizeof(path), "%s/lvm/global", cmd->proc_dir)
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< 0) {
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log_error("LVM1 proc global snprintf failed");
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return 0;
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}
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if (path_exists(path))
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return 1;
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else
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return 0;
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}
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int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
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struct dm_list *modules)
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{
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unsigned int s;
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struct lv_segment *seg2, *snap_seg;
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struct dm_list *snh;
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if (seg->segtype->ops->modules_needed &&
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!seg->segtype->ops->modules_needed(mem, seg, modules)) {
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log_error("module string allocation failed");
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return 0;
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}
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if (lv_is_origin(seg->lv))
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dm_list_iterate(snh, &seg->lv->snapshot_segs)
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if (!list_lv_modules(mem,
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dm_list_struct_base(snh,
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struct lv_segment,
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origin_list)->cow,
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modules))
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return_0;
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if (lv_is_cow(seg->lv)) {
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snap_seg = find_cow(seg->lv);
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if (snap_seg->segtype->ops->modules_needed &&
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!snap_seg->segtype->ops->modules_needed(mem, snap_seg,
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modules)) {
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log_error("snap_seg module string allocation failed");
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return 0;
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}
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}
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for (s = 0; s < seg->area_count; s++) {
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switch (seg_type(seg, s)) {
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case AREA_LV:
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seg2 = find_seg_by_le(seg_lv(seg, s), seg_le(seg, s));
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if (seg2 && !list_segment_modules(mem, seg2, modules))
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return_0;
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break;
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case AREA_PV:
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case AREA_UNASSIGNED:
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;
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}
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}
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return 1;
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}
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int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
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struct dm_list *modules)
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{
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struct lv_segment *seg;
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dm_list_iterate_items(seg, &lv->segments)
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if (!list_segment_modules(mem, seg, modules))
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return_0;
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return 1;
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}
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#ifndef DEVMAPPER_SUPPORT
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void set_activation(int act)
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{
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static int warned = 0;
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if (warned || !act)
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return;
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log_error("Compiled without libdevmapper support. "
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"Can't enable activation.");
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warned = 1;
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}
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int activation(void)
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{
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return 0;
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}
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int library_version(char *version, size_t size)
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{
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return 0;
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}
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int driver_version(char *version, size_t size)
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{
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return 0;
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}
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int target_version(const char *target_name, uint32_t *maj,
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uint32_t *min, uint32_t *patchlevel)
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{
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return 0;
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}
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int target_present(struct cmd_context *cmd, const char *target_name,
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int use_modprobe)
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{
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return 0;
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}
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int lvm_dm_prefix_check(int major, int minor, const char *prefix)
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{
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return 0;
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}
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int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_layer,
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struct lvinfo *info, int with_open_count, int with_read_ahead)
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{
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return 0;
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}
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int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, int use_layer,
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struct lvinfo *info, int with_open_count, int with_read_ahead)
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{
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return 0;
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}
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int lv_check_not_in_use(struct cmd_context *cmd __attribute__((unused)),
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struct logical_volume *lv, struct lvinfo *info)
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{
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return 0;
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}
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int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent)
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{
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return 0;
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}
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int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
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int wait, percent_t *percent, uint32_t *event_nr)
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{
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return 0;
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}
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int lv_raid_percent(const struct logical_volume *lv, percent_t *percent)
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{
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return 0;
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}
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int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
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percent_t *percent)
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{
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return 0;
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}
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int lv_thin_percent(const struct logical_volume *lv, int mapped,
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percent_t *percent)
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{
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return 0;
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}
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int lv_thin_pool_transaction_id(const struct logical_volume *lv,
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uint64_t *transaction_id)
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{
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return 0;
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}
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int lvs_in_vg_activated(const struct volume_group *vg)
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{
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return 0;
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}
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int lvs_in_vg_opened(const struct volume_group *vg)
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{
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return 0;
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}
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/******
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int lv_suspend(struct cmd_context *cmd, const char *lvid_s)
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{
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return 1;
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}
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*******/
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int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only, unsigned exclusive)
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{
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return 1;
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}
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int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only)
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{
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return 1;
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}
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int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
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unsigned origin_only, unsigned exclusive, unsigned revert)
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{
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return 1;
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}
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int lv_deactivate(struct cmd_context *cmd, const char *lvid_s)
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{
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return 1;
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}
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int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
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int *activate_lv)
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{
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return 1;
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}
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int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive)
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{
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return 1;
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}
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int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive)
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{
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return 1;
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}
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int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv)
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{
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return 1;
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}
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int pv_uses_vg(struct physical_volume *pv,
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struct volume_group *vg)
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{
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return 0;
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}
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void activation_release(void)
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{
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}
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void activation_exit(void)
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{
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}
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int lv_is_active(const struct logical_volume *lv)
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{
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return 0;
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}
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int lv_is_active_but_not_locally(const struct logical_volume *lv)
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{
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return 0;
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}
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int lv_is_active_exclusive(const struct logical_volume *lv)
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{
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return 0;
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}
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int lv_is_active_exclusive_locally(const struct logical_volume *lv)
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{
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return 0;
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}
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int lv_is_active_exclusive_remotely(const struct logical_volume *lv)
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{
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return 0;
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}
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int lv_check_transient(struct logical_volume *lv)
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{
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return 1;
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}
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int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv,
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const struct lv_activate_opts *laopts, int monitor)
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{
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return 1;
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}
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/* fs.c */
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void fs_unlock(void)
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{
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}
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/* dev_manager.c */
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#include "targets.h"
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int add_areas_line(struct dev_manager *dm, struct lv_segment *seg,
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struct dm_tree_node *node, uint32_t start_area,
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uint32_t areas)
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{
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return 0;
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}
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int device_is_usable(struct device *dev)
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{
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return 0;
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}
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int lv_has_target_type(struct dm_pool *mem, struct logical_volume *lv,
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const char *layer, const char *target_type)
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{
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return 0;
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}
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#else /* DEVMAPPER_SUPPORT */
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static int _activation = 1;
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void set_activation(int act)
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{
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if (act == _activation)
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return;
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_activation = act;
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if (_activation)
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log_verbose("Activation enabled. Device-mapper kernel "
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"driver will be used.");
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else
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log_warn("WARNING: Activation disabled. No device-mapper "
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"interaction will be attempted.");
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}
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int activation(void)
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{
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return _activation;
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}
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static int _passes_volumes_filter(struct cmd_context *cmd,
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struct logical_volume *lv,
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const struct dm_config_node *cn,
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const char *config_path)
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{
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const struct dm_config_value *cv;
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const char *str;
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static char path[PATH_MAX];
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log_verbose("%s configuration setting defined: "
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"Checking the list to match %s/%s",
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config_path, lv->vg->name, lv->name);
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for (cv = cn->v; cv; cv = cv->next) {
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if (cv->type != DM_CFG_STRING) {
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log_error("Ignoring invalid string in config file %s",
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config_path);
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continue;
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}
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str = cv->v.str;
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if (!*str) {
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log_error("Ignoring empty string in config file %s",
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config_path);
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continue;
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}
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/* Tag? */
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if (*str == '@') {
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str++;
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if (!*str) {
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log_error("Ignoring empty tag in config file "
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"%s", config_path);
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continue;
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}
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/* If any host tag matches any LV or VG tag, activate */
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if (!strcmp(str, "*")) {
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if (str_list_match_list(&cmd->tags, &lv->tags, NULL)
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|| str_list_match_list(&cmd->tags,
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&lv->vg->tags, NULL))
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return 1;
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else
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continue;
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}
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/* If supplied tag matches LV or VG tag, activate */
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if (str_list_match_item(&lv->tags, str) ||
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str_list_match_item(&lv->vg->tags, str))
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return 1;
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else
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continue;
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}
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if (!strchr(str, '/')) {
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/* vgname supplied */
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if (!strcmp(str, lv->vg->name))
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return 1;
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else
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continue;
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}
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/* vgname/lvname */
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if (dm_snprintf(path, sizeof(path), "%s/%s", lv->vg->name,
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lv->name) < 0) {
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log_error("dm_snprintf error from %s/%s", lv->vg->name,
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lv->name);
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continue;
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}
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if (!strcmp(path, str))
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return 1;
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}
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log_verbose("No item supplied in %s configuration setting "
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"matches %s/%s", config_path, lv->vg->name, lv->name);
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return 0;
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}
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static int _passes_activation_filter(struct cmd_context *cmd,
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struct logical_volume *lv)
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{
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const struct dm_config_node *cn;
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if (!(cn = find_config_tree_node(cmd, "activation/volume_list"))) {
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log_verbose("activation/volume_list configuration setting "
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"not defined: Checking only host tags for %s/%s",
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lv->vg->name, lv->name);
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/* If no host tags defined, activate */
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if (dm_list_empty(&cmd->tags))
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return 1;
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/* If any host tag matches any LV or VG tag, activate */
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if (str_list_match_list(&cmd->tags, &lv->tags, NULL) ||
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str_list_match_list(&cmd->tags, &lv->vg->tags, NULL))
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return 1;
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log_verbose("No host tag matches %s/%s",
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lv->vg->name, lv->name);
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/* Don't activate */
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return 0;
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}
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return _passes_volumes_filter(cmd, lv, cn, "activation/volume_list");
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}
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static int _passes_readonly_filter(struct cmd_context *cmd,
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struct logical_volume *lv)
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{
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const struct dm_config_node *cn;
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if (!(cn = find_config_tree_node(cmd, "activation/read_only_volume_list")))
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return 0;
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return _passes_volumes_filter(cmd, lv, cn, "activation/read_only_volume_list");
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}
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int library_version(char *version, size_t size)
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{
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if (!activation())
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return 0;
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return dm_get_library_version(version, size);
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}
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int driver_version(char *version, size_t size)
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{
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if (!activation())
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return 0;
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log_very_verbose("Getting driver version");
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return dm_driver_version(version, size);
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}
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int target_version(const char *target_name, uint32_t *maj,
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uint32_t *min, uint32_t *patchlevel)
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{
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int r = 0;
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struct dm_task *dmt;
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struct dm_versions *target, *last_target;
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log_very_verbose("Getting target version for %s", target_name);
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if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
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return_0;
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if (activation_checks() && !dm_task_enable_checks(dmt))
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goto_out;
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if (!dm_task_run(dmt)) {
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log_debug("Failed to get %s target version", target_name);
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/* Assume this was because LIST_VERSIONS isn't supported */
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*maj = 0;
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*min = 0;
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*patchlevel = 0;
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r = 1;
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goto out;
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}
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target = dm_task_get_versions(dmt);
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do {
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last_target = target;
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if (!strcmp(target_name, target->name)) {
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r = 1;
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*maj = target->version[0];
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*min = target->version[1];
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*patchlevel = target->version[2];
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goto out;
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}
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target = (struct dm_versions *)((char *) target + target->next);
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} while (last_target != target);
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out:
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dm_task_destroy(dmt);
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return r;
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}
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int lvm_dm_prefix_check(int major, int minor, const char *prefix)
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{
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struct dm_task *dmt;
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const char *uuid;
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int r;
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if (!(dmt = dm_task_create(DM_DEVICE_STATUS)))
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return_0;
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if (!dm_task_set_minor(dmt, minor) ||
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!dm_task_set_major(dmt, major) ||
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!dm_task_run(dmt) ||
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!(uuid = dm_task_get_uuid(dmt))) {
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dm_task_destroy(dmt);
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return 0;
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}
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r = strncasecmp(uuid, prefix, strlen(prefix));
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dm_task_destroy(dmt);
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return r ? 0 : 1;
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}
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int module_present(struct cmd_context *cmd, const char *target_name)
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{
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int ret = 0;
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#ifdef MODPROBE_CMD
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char module[128];
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const char *argv[3];
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if (dm_snprintf(module, sizeof(module), "dm-%s", target_name) < 0) {
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log_error("module_present module name too long: %s",
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target_name);
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return 0;
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}
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argv[0] = MODPROBE_CMD;
|
|
argv[1] = module;
|
|
argv[2] = NULL;
|
|
|
|
ret = exec_cmd(cmd, argv, NULL, 0);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
int target_present(struct cmd_context *cmd, const char *target_name,
|
|
int use_modprobe)
|
|
{
|
|
uint32_t maj, min, patchlevel;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
#ifdef MODPROBE_CMD
|
|
if (use_modprobe) {
|
|
if (target_version(target_name, &maj, &min, &patchlevel))
|
|
return 1;
|
|
|
|
if (!module_present(cmd, target_name))
|
|
return_0;
|
|
}
|
|
#endif
|
|
|
|
return target_version(target_name, &maj, &min, &patchlevel);
|
|
}
|
|
|
|
/*
|
|
* Returns 1 if info structure populated, else 0 on failure.
|
|
*/
|
|
int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int use_layer,
|
|
struct lvinfo *info, int with_open_count, int with_read_ahead)
|
|
{
|
|
struct dm_info dminfo;
|
|
const char *layer;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
/*
|
|
* If open_count info is requested and we have to be sure our own udev
|
|
* transactions are finished
|
|
* For non-clustered locking type we are only interested for non-delete operation
|
|
* in progress - as only those could lead to opened files
|
|
*/
|
|
if (with_open_count) {
|
|
if (locking_is_clustered())
|
|
sync_local_dev_names(cmd); /* Wait to have udev in sync */
|
|
else if (fs_has_non_delete_ops())
|
|
fs_unlock(); /* For non clustered - wait if there are non-delete ops */
|
|
}
|
|
|
|
if (use_layer && lv_is_thin_pool(lv))
|
|
layer = "tpool";
|
|
else if (use_layer && lv_is_origin(lv))
|
|
layer = "real";
|
|
else
|
|
layer = NULL;
|
|
|
|
if (!dev_manager_info(lv->vg->cmd->mem, lv, layer, with_open_count,
|
|
with_read_ahead, &dminfo, &info->read_ahead))
|
|
return_0;
|
|
|
|
info->exists = dminfo.exists;
|
|
info->suspended = dminfo.suspended;
|
|
info->open_count = dminfo.open_count;
|
|
info->major = dminfo.major;
|
|
info->minor = dminfo.minor;
|
|
info->read_only = dminfo.read_only;
|
|
info->live_table = dminfo.live_table;
|
|
info->inactive_table = dminfo.inactive_table;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s, int use_layer,
|
|
struct lvinfo *info, int with_open_count, int with_read_ahead)
|
|
{
|
|
int r;
|
|
struct logical_volume *lv;
|
|
|
|
if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
|
|
return 0;
|
|
|
|
r = lv_info(cmd, lv, use_layer, info, with_open_count, with_read_ahead);
|
|
release_vg(lv->vg);
|
|
|
|
return r;
|
|
}
|
|
|
|
int lv_check_not_in_use(struct cmd_context *cmd __attribute__((unused)),
|
|
struct logical_volume *lv, struct lvinfo *info)
|
|
{
|
|
if (!info->exists)
|
|
return 1;
|
|
|
|
/* If sysfs is not used, use open_count information only. */
|
|
if (!*dm_sysfs_dir()) {
|
|
if (info->open_count) {
|
|
log_error("Logical volume %s/%s in use.",
|
|
lv->vg->name, lv->name);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (dm_device_has_holders(info->major, info->minor)) {
|
|
log_error("Logical volume %s/%s is used by another device.",
|
|
lv->vg->name, lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (dm_device_has_mounted_fs(info->major, info->minor)) {
|
|
log_error("Logical volume %s/%s contains a filesystem in use.",
|
|
lv->vg->name, lv->name);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Returns 1 if percent set, else 0 on failure.
|
|
*/
|
|
int lv_check_transient(struct logical_volume *lv)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
log_debug("Checking transient status for LV %s/%s", lv->vg->name, lv->name);
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_transient(dm, lv)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Returns 1 if percent set, else 0 on failure.
|
|
*/
|
|
int lv_snapshot_percent(const struct logical_volume *lv, percent_t *percent)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
log_debug("Checking snapshot percent for LV %s/%s", lv->vg->name, lv->name);
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_snapshot_percent(dm, lv, percent)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
return r;
|
|
}
|
|
|
|
/* FIXME Merge with snapshot_percent */
|
|
int lv_mirror_percent(struct cmd_context *cmd, const struct logical_volume *lv,
|
|
int wait, percent_t *percent, uint32_t *event_nr)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
struct lvinfo info;
|
|
|
|
/* If mirrored LV is temporarily shrinked to 1 area (= linear),
|
|
* it should be considered in-sync. */
|
|
if (dm_list_size(&lv->segments) == 1 && first_seg(lv)->area_count == 1) {
|
|
*percent = PERCENT_100;
|
|
return 1;
|
|
}
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
log_debug("Checking mirror percent for LV %s/%s", lv->vg->name, lv->name);
|
|
|
|
if (!lv_info(cmd, lv, 0, &info, 0, 0))
|
|
return_0;
|
|
|
|
if (!info.exists)
|
|
return 0;
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
return r;
|
|
}
|
|
|
|
int lv_raid_percent(const struct logical_volume *lv, percent_t *percent)
|
|
{
|
|
return lv_mirror_percent(lv->vg->cmd, lv, 0, percent, NULL);
|
|
}
|
|
|
|
/*
|
|
* Returns data or metadata percent usage, depends on metadata 0/1.
|
|
* Returns 1 if percent set, else 0 on failure.
|
|
*/
|
|
int lv_thin_pool_percent(const struct logical_volume *lv, int metadata,
|
|
percent_t *percent)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
log_debug("Checking thin %sdata percent for LV %s/%s",
|
|
(metadata) ? "meta" : "", lv->vg->name, lv->name);
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_thin_pool_percent(dm, lv, metadata, percent)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Returns 1 if percent set, else 0 on failure.
|
|
*/
|
|
int lv_thin_percent(const struct logical_volume *lv,
|
|
int mapped, percent_t *percent)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
log_debug("Checking thin percent for LV %s/%s",
|
|
lv->vg->name, lv->name);
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_thin_percent(dm, lv, mapped, percent)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Returns 1 if transaction_id set, else 0 on failure.
|
|
*/
|
|
int lv_thin_pool_transaction_id(const struct logical_volume *lv,
|
|
uint64_t *transaction_id)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
struct dm_status_thin_pool *status;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
log_debug("Checking thin percent for LV %s/%s",
|
|
lv->vg->name, lv->name);
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_thin_pool_status(dm, lv, &status)))
|
|
stack;
|
|
else
|
|
*transaction_id = status->transaction_id;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int _lv_active(struct cmd_context *cmd, const struct logical_volume *lv)
|
|
{
|
|
struct lvinfo info;
|
|
|
|
if (!lv_info(cmd, lv, 0, &info, 0, 0)) {
|
|
stack;
|
|
return -1;
|
|
}
|
|
|
|
return info.exists;
|
|
}
|
|
|
|
static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv)
|
|
{
|
|
struct lvinfo info;
|
|
|
|
if (!lv_info(cmd, lv, 0, &info, 1, 0)) {
|
|
stack;
|
|
return -1;
|
|
}
|
|
|
|
return info.open_count;
|
|
}
|
|
|
|
static int _lv_activate_lv(struct logical_volume *lv, struct lv_activate_opts *laopts)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, (lv->status & PVMOVE) ? 0 : 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_activate(dm, lv, laopts)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
return r;
|
|
}
|
|
|
|
static int _lv_preload(struct logical_volume *lv, struct lv_activate_opts *laopts,
|
|
int *flush_required)
|
|
{
|
|
int r = 0;
|
|
struct dev_manager *dm;
|
|
int old_readonly = laopts->read_only;
|
|
|
|
laopts->read_only = _passes_readonly_filter(lv->vg->cmd, lv);
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, (lv->status & PVMOVE) ? 0 : 1)))
|
|
goto_out;
|
|
|
|
if (!(r = dev_manager_preload(dm, lv, laopts, flush_required)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
|
|
laopts->read_only = old_readonly;
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
static int _lv_deactivate(struct logical_volume *lv)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_deactivate(dm, lv)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
return r;
|
|
}
|
|
|
|
static int _lv_suspend_lv(struct logical_volume *lv, struct lv_activate_opts *laopts,
|
|
int lockfs, int flush_required)
|
|
{
|
|
int r;
|
|
struct dev_manager *dm;
|
|
|
|
laopts->read_only = _passes_readonly_filter(lv->vg->cmd, lv);
|
|
|
|
/*
|
|
* When we are asked to manipulate (normally suspend/resume) the PVMOVE
|
|
* device directly, we don't want to touch the devices that use it.
|
|
*/
|
|
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name, (lv->status & PVMOVE) ? 0 : 1)))
|
|
return_0;
|
|
|
|
if (!(r = dev_manager_suspend(dm, lv, laopts, lockfs, flush_required)))
|
|
stack;
|
|
|
|
dev_manager_destroy(dm);
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* These two functions return the number of visible LVs in the state,
|
|
* or -1 on error. FIXME Check this.
|
|
*/
|
|
int lvs_in_vg_activated(const struct volume_group *vg)
|
|
{
|
|
struct lv_list *lvl;
|
|
int count = 0;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
dm_list_iterate_items(lvl, &vg->lvs)
|
|
if (lv_is_visible(lvl->lv))
|
|
count += (_lv_active(vg->cmd, lvl->lv) == 1);
|
|
|
|
log_debug("Counted %d active LVs in VG %s", count, vg->name);
|
|
|
|
return count;
|
|
}
|
|
|
|
int lvs_in_vg_opened(const struct volume_group *vg)
|
|
{
|
|
const struct lv_list *lvl;
|
|
int count = 0;
|
|
|
|
if (!activation())
|
|
return 0;
|
|
|
|
dm_list_iterate_items(lvl, &vg->lvs)
|
|
if (lv_is_visible(lvl->lv))
|
|
count += (_lv_open_count(vg->cmd, lvl->lv) > 0);
|
|
|
|
log_debug("Counted %d open LVs in VG %s", count, vg->name);
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* _lv_is_active
|
|
* @lv: logical volume being queried
|
|
* @locally: set if active locally (when provided)
|
|
* @exclusive: set if active exclusively (when provided)
|
|
*
|
|
* Determine whether an LV is active locally or in a cluster.
|
|
* In addition to the return code which indicates whether or
|
|
* not the LV is active somewhere, two other values are set
|
|
* to yield more information about the status of the activation:
|
|
* return locally exclusively status
|
|
* ====== ======= =========== ======
|
|
* 0 0 0 not active
|
|
* 1 0 0 active remotely
|
|
* 1 0 1 exclusive remotely
|
|
* 1 1 0 active locally and possibly remotely
|
|
* 1 1 1 exclusive locally (or local && !cluster)
|
|
* The VG lock must be held to call this function.
|
|
*
|
|
* Returns: 0 or 1
|
|
*/
|
|
static int _lv_is_active(const struct logical_volume *lv,
|
|
int *locally, int *exclusive)
|
|
{
|
|
int r, l, e; /* remote, local, and exclusive */
|
|
|
|
r = l = e = 0;
|
|
|
|
if (_lv_active(lv->vg->cmd, lv))
|
|
l = 1;
|
|
|
|
if (!vg_is_clustered(lv->vg)) {
|
|
if (l)
|
|
e = 1; /* exclusive by definition */
|
|
goto out;
|
|
}
|
|
|
|
/* Active locally, and the caller doesn't care about exclusive */
|
|
if (l && !exclusive)
|
|
goto out;
|
|
|
|
if ((r = remote_lock_held(lv->lvid.s, &e)) >= 0)
|
|
goto out;
|
|
|
|
/*
|
|
* If lock query is not supported (due to interfacing with old
|
|
* code), then we cannot evaluate exclusivity properly.
|
|
*
|
|
* Old users of this function will never be affected by this,
|
|
* since they are only concerned about active vs. not active.
|
|
* New users of this function who specifically ask for 'exclusive'
|
|
* will be given an error message.
|
|
*/
|
|
log_error("Unable to determine exclusivity of %s", lv->name);
|
|
|
|
e = 0;
|
|
|
|
/*
|
|
* We used to attempt activate_lv_excl_local(lv->vg->cmd, lv) here,
|
|
* but it's unreliable.
|
|
*/
|
|
|
|
out:
|
|
if (locally)
|
|
*locally = l;
|
|
if (exclusive)
|
|
*exclusive = e;
|
|
|
|
log_very_verbose("%s/%s is %sactive%s%s",
|
|
lv->vg->name, lv->name,
|
|
(r || l) ? "" : "not ",
|
|
(exclusive && e) ? " exclusive" : "",
|
|
e ? (l ? " locally" : " remotely") : "");
|
|
|
|
return r || l;
|
|
}
|
|
|
|
int lv_is_active(const struct logical_volume *lv)
|
|
{
|
|
return _lv_is_active(lv, NULL, NULL);
|
|
}
|
|
|
|
int lv_is_active_but_not_locally(const struct logical_volume *lv)
|
|
{
|
|
int l;
|
|
return _lv_is_active(lv, &l, NULL) && !l;
|
|
}
|
|
|
|
int lv_is_active_exclusive(const struct logical_volume *lv)
|
|
{
|
|
int e;
|
|
|
|
return _lv_is_active(lv, NULL, &e) && e;
|
|
}
|
|
|
|
int lv_is_active_exclusive_locally(const struct logical_volume *lv)
|
|
{
|
|
int l, e;
|
|
|
|
return _lv_is_active(lv, &l, &e) && l && e;
|
|
}
|
|
|
|
int lv_is_active_exclusive_remotely(const struct logical_volume *lv)
|
|
{
|
|
int l, e;
|
|
|
|
return _lv_is_active(lv, &l, &e) && !l && e;
|
|
}
|
|
|
|
#ifdef DMEVENTD
|
|
static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso,
|
|
const int timeout, enum dm_event_mask mask)
|
|
{
|
|
struct dm_event_handler *dmevh;
|
|
|
|
if (!(dmevh = dm_event_handler_create()))
|
|
return_NULL;
|
|
|
|
if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL)))
|
|
goto_bad;
|
|
|
|
if (dm_event_handler_set_dso(dmevh, dso))
|
|
goto_bad;
|
|
|
|
if (dm_event_handler_set_uuid(dmevh, dmuuid))
|
|
goto_bad;
|
|
|
|
dm_event_handler_set_timeout(dmevh, timeout);
|
|
dm_event_handler_set_event_mask(dmevh, mask);
|
|
|
|
return dmevh;
|
|
|
|
bad:
|
|
dm_event_handler_destroy(dmevh);
|
|
return NULL;
|
|
}
|
|
|
|
char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath)
|
|
{
|
|
char *path;
|
|
|
|
if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) {
|
|
log_error("Failed to allocate dmeventd library path.");
|
|
return NULL;
|
|
}
|
|
|
|
get_shared_library_path(cmd, libpath, path, PATH_MAX);
|
|
|
|
return path;
|
|
}
|
|
|
|
static char *_build_target_uuid(struct cmd_context *cmd, struct logical_volume *lv)
|
|
{
|
|
const char *layer;
|
|
|
|
if (lv_is_thin_pool(lv))
|
|
layer = "tpool"; /* Monitor "tpool" for the "thin pool". */
|
|
else if (lv_is_origin(lv))
|
|
layer = "real"; /* Monitor "real" for "snapshot-origin". */
|
|
else
|
|
layer = NULL;
|
|
|
|
return build_dm_uuid(cmd->mem, lv->lvid.s, layer);
|
|
}
|
|
|
|
int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso,
|
|
struct logical_volume *lv, int *pending)
|
|
{
|
|
char *uuid;
|
|
enum dm_event_mask evmask = 0;
|
|
struct dm_event_handler *dmevh;
|
|
*pending = 0;
|
|
|
|
if (!dso)
|
|
return_0;
|
|
|
|
if (!(uuid = _build_target_uuid(cmd, lv)))
|
|
return_0;
|
|
|
|
if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS)))
|
|
return_0;
|
|
|
|
if (dm_event_get_registered_device(dmevh, 0)) {
|
|
dm_event_handler_destroy(dmevh);
|
|
return 0;
|
|
}
|
|
|
|
evmask = dm_event_handler_get_event_mask(dmevh);
|
|
if (evmask & DM_EVENT_REGISTRATION_PENDING) {
|
|
*pending = 1;
|
|
evmask &= ~DM_EVENT_REGISTRATION_PENDING;
|
|
}
|
|
|
|
dm_event_handler_destroy(dmevh);
|
|
|
|
return evmask;
|
|
}
|
|
|
|
int target_register_events(struct cmd_context *cmd, const char *dso, struct logical_volume *lv,
|
|
int evmask __attribute__((unused)), int set, int timeout)
|
|
{
|
|
char *uuid;
|
|
struct dm_event_handler *dmevh;
|
|
int r;
|
|
|
|
if (!dso)
|
|
return_0;
|
|
|
|
/* We always monitor the "real" device, never the "snapshot-origin" itself. */
|
|
if (!(uuid = _build_target_uuid(cmd, lv)))
|
|
return_0;
|
|
|
|
if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout,
|
|
DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0))))
|
|
return_0;
|
|
|
|
r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh);
|
|
|
|
dm_event_handler_destroy(dmevh);
|
|
|
|
if (!r)
|
|
return_0;
|
|
|
|
log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid);
|
|
|
|
return 1;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Returns 0 if an attempt to (un)monitor the device failed.
|
|
* Returns 1 otherwise.
|
|
*/
|
|
int monitor_dev_for_events(struct cmd_context *cmd, struct logical_volume *lv,
|
|
const struct lv_activate_opts *laopts, int monitor)
|
|
{
|
|
#ifdef DMEVENTD
|
|
int i, pending = 0, monitored;
|
|
int r = 1;
|
|
struct dm_list *tmp, *snh, *snht;
|
|
struct lv_segment *seg;
|
|
struct lv_segment *log_seg;
|
|
int (*monitor_fn) (struct lv_segment *s, int e);
|
|
uint32_t s;
|
|
static const struct lv_activate_opts zlaopts = { 0 };
|
|
static const struct lv_activate_opts thinopts = { .skip_in_use = 1 };
|
|
struct lvinfo info;
|
|
|
|
if (!laopts)
|
|
laopts = &zlaopts;
|
|
|
|
/* skip dmeventd code altogether */
|
|
if (dmeventd_monitor_mode() == DMEVENTD_MONITOR_IGNORE)
|
|
return 1;
|
|
|
|
/*
|
|
* Nothing to do if dmeventd configured not to be used.
|
|
*/
|
|
if (monitor && !dmeventd_monitor_mode())
|
|
return 1;
|
|
|
|
/*
|
|
* Allow to unmonitor thin pool via explicit pool unmonitor
|
|
* or unmonitor before the last thin pool user deactivation
|
|
* Skip unmonitor, if invoked via unmonitor of thin volume
|
|
* and there is another thin pool user (open_count > 1)
|
|
*/
|
|
if (laopts->skip_in_use && lv_info(lv->vg->cmd, lv, 1, &info, 1, 0) &&
|
|
(info.open_count != 1)) {
|
|
log_debug("Skipping unmonitor of opened %s (open:%d)",
|
|
lv->name, info.open_count);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* In case of a snapshot device, we monitor lv->snapshot->lv,
|
|
* not the actual LV itself.
|
|
*/
|
|
if (lv_is_cow(lv) && (laopts->no_merging || !lv_is_merging_cow(lv)))
|
|
return monitor_dev_for_events(cmd, lv->snapshot->lv, NULL, monitor);
|
|
|
|
/*
|
|
* In case this LV is a snapshot origin, we instead monitor
|
|
* each of its respective snapshots. The origin itself may
|
|
* also need to be monitored if it is a mirror, for example.
|
|
*/
|
|
if (!laopts->origin_only && lv_is_origin(lv))
|
|
dm_list_iterate_safe(snh, snht, &lv->snapshot_segs)
|
|
if (!monitor_dev_for_events(cmd, dm_list_struct_base(snh,
|
|
struct lv_segment, origin_list)->cow, NULL, monitor))
|
|
r = 0;
|
|
|
|
/*
|
|
* If the volume is mirrored and its log is also mirrored, monitor
|
|
* the log volume as well.
|
|
*/
|
|
if ((seg = first_seg(lv)) != NULL && seg->log_lv != NULL &&
|
|
(log_seg = first_seg(seg->log_lv)) != NULL &&
|
|
seg_is_mirrored(log_seg))
|
|
if (!monitor_dev_for_events(cmd, seg->log_lv, NULL, monitor))
|
|
r = 0;
|
|
|
|
dm_list_iterate(tmp, &lv->segments) {
|
|
seg = dm_list_item(tmp, struct lv_segment);
|
|
|
|
/* Recurse for AREA_LV */
|
|
for (s = 0; s < seg->area_count; s++) {
|
|
if (seg_type(seg, s) != AREA_LV)
|
|
continue;
|
|
if (!monitor_dev_for_events(cmd, seg_lv(seg, s), NULL,
|
|
monitor)) {
|
|
log_error("Failed to %smonitor %s",
|
|
monitor ? "" : "un",
|
|
seg_lv(seg, s)->name);
|
|
r = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If requested unmonitoring of thin volume, request test
|
|
* if there is no other thin pool user
|
|
*
|
|
* FIXME: code here looks like _lv_postorder()
|
|
*/
|
|
if (seg->pool_lv &&
|
|
!monitor_dev_for_events(cmd, seg->pool_lv,
|
|
(!monitor) ? &thinopts : NULL, monitor))
|
|
r = 0;
|
|
|
|
if (seg->metadata_lv &&
|
|
!monitor_dev_for_events(cmd, seg->metadata_lv, NULL, monitor))
|
|
r = 0;
|
|
|
|
if (!seg_monitored(seg) || (seg->status & PVMOVE))
|
|
continue;
|
|
|
|
monitor_fn = NULL;
|
|
|
|
/* Check monitoring status */
|
|
if (seg->segtype->ops->target_monitored)
|
|
monitored = seg->segtype->ops->target_monitored(seg, &pending);
|
|
else
|
|
continue; /* segtype doesn't support registration */
|
|
|
|
/*
|
|
* FIXME: We should really try again if pending
|
|
*/
|
|
monitored = (pending) ? 0 : monitored;
|
|
|
|
if (monitor) {
|
|
if (monitored)
|
|
log_verbose("%s/%s already monitored.", lv->vg->name, lv->name);
|
|
else if (seg->segtype->ops->target_monitor_events)
|
|
monitor_fn = seg->segtype->ops->target_monitor_events;
|
|
} else {
|
|
if (!monitored)
|
|
log_verbose("%s/%s already not monitored.", lv->vg->name, lv->name);
|
|
else if (seg->segtype->ops->target_unmonitor_events)
|
|
monitor_fn = seg->segtype->ops->target_unmonitor_events;
|
|
}
|
|
|
|
/* Do [un]monitor */
|
|
if (!monitor_fn)
|
|
continue;
|
|
|
|
log_verbose("%sonitoring %s/%s%s", monitor ? "M" : "Not m", lv->vg->name, lv->name,
|
|
test_mode() ? " [Test mode: skipping this]" : "");
|
|
|
|
/* FIXME Test mode should really continue a bit further. */
|
|
if (test_mode())
|
|
continue;
|
|
|
|
/* FIXME specify events */
|
|
if (!monitor_fn(seg, 0)) {
|
|
log_error("%s/%s: %s segment monitoring function failed.",
|
|
lv->vg->name, lv->name, seg->segtype->name);
|
|
return 0;
|
|
}
|
|
|
|
/* Check [un]monitor results */
|
|
/* Try a couple times if pending, but not forever... */
|
|
for (i = 0; i < 10; i++) {
|
|
pending = 0;
|
|
monitored = seg->segtype->ops->target_monitored(seg, &pending);
|
|
if (pending ||
|
|
(!monitored && monitor) ||
|
|
(monitored && !monitor))
|
|
log_very_verbose("%s/%s %smonitoring still pending: waiting...",
|
|
lv->vg->name, lv->name, monitor ? "" : "un");
|
|
else
|
|
break;
|
|
sleep(1);
|
|
}
|
|
|
|
if (r)
|
|
r = (monitored && monitor) || (!monitored && !monitor);
|
|
}
|
|
|
|
return r;
|
|
#else
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
struct detached_lv_data {
|
|
struct logical_volume *lv_pre;
|
|
struct lv_activate_opts *laopts;
|
|
int *flush_required;
|
|
};
|
|
|
|
static int _preload_detached_lv(struct cmd_context *cmd, struct logical_volume *lv, void *data)
|
|
{
|
|
struct detached_lv_data *detached = data;
|
|
struct lv_list *lvl_pre;
|
|
|
|
if ((lvl_pre = find_lv_in_vg(detached->lv_pre->vg, lv->name))) {
|
|
if (lv_is_visible(lvl_pre->lv) && lv_is_active(lv) && (!lv_is_cow(lv) || !lv_is_cow(lvl_pre->lv)) &&
|
|
!_lv_preload(lvl_pre->lv, detached->laopts, detached->flush_required))
|
|
return_0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s,
|
|
struct lv_activate_opts *laopts, int error_if_not_suspended)
|
|
{
|
|
struct logical_volume *lv = NULL, *lv_pre = NULL, *pvmove_lv = NULL;
|
|
struct lv_list *lvl_pre;
|
|
struct seg_list *sl;
|
|
struct lv_segment *snap_seg;
|
|
struct lvinfo info;
|
|
int r = 0, lockfs = 0, flush_required = 0;
|
|
struct detached_lv_data detached;
|
|
|
|
if (!activation())
|
|
return 1;
|
|
|
|
if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
|
|
goto_out;
|
|
|
|
/* Use precommitted metadata if present */
|
|
if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1)))
|
|
goto_out;
|
|
|
|
/* Ignore origin_only unless LV is origin in both old and new metadata */
|
|
if (!lv_is_thin_volume(lv) && !(lv_is_origin(lv) && lv_is_origin(lv_pre)))
|
|
laopts->origin_only = 0;
|
|
|
|
if (test_mode()) {
|
|
_skip("Suspending %s%s.", lv->name, laopts->origin_only ? " origin without snapshots" : "");
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (!lv_info(cmd, lv, laopts->origin_only, &info, 0, 0))
|
|
goto_out;
|
|
|
|
if (!info.exists || info.suspended) {
|
|
if (!error_if_not_suspended) {
|
|
r = 1;
|
|
if (info.suspended)
|
|
critical_section_inc(cmd, "already suspended");
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
if (!lv_read_replicator_vgs(lv))
|
|
goto_out;
|
|
|
|
lv_calculate_readahead(lv, NULL);
|
|
|
|
/*
|
|
* Preload devices for the LV.
|
|
* If the PVMOVE LV is being removed, it's only present in the old
|
|
* metadata and not the new, so we must explicitly add the new
|
|
* tables for all the changed LVs here, as the relationships
|
|
* are not found by walking the new metadata.
|
|
*/
|
|
if (!(lv_pre->status & LOCKED) &&
|
|
(lv->status & LOCKED) &&
|
|
(pvmove_lv = find_pvmove_lv_in_lv(lv))) {
|
|
/* Preload all the LVs above the PVMOVE LV */
|
|
dm_list_iterate_items(sl, &pvmove_lv->segs_using_this_lv) {
|
|
if (!(lvl_pre = find_lv_in_vg(lv_pre->vg, sl->seg->lv->name))) {
|
|
log_error(INTERNAL_ERROR "LV %s missing from preload metadata", sl->seg->lv->name);
|
|
goto out;
|
|
}
|
|
if (!_lv_preload(lvl_pre->lv, laopts, &flush_required))
|
|
goto_out;
|
|
}
|
|
/* Now preload the PVMOVE LV itself */
|
|
if (!(lvl_pre = find_lv_in_vg(lv_pre->vg, pvmove_lv->name))) {
|
|
log_error(INTERNAL_ERROR "LV %s missing from preload metadata", pvmove_lv->name);
|
|
goto out;
|
|
}
|
|
if (!_lv_preload(lvl_pre->lv, laopts, &flush_required))
|
|
goto_out;
|
|
} else {
|
|
if (!_lv_preload(lv_pre, laopts, &flush_required))
|
|
/* FIXME Revert preloading */
|
|
goto_out;
|
|
|
|
/*
|
|
* Search for existing LVs that have become detached and preload them.
|
|
*/
|
|
detached.lv_pre = lv_pre;
|
|
detached.laopts = laopts;
|
|
detached.flush_required = &flush_required;
|
|
|
|
if (!for_each_sub_lv(cmd, lv, &_preload_detached_lv, &detached))
|
|
goto_out;
|
|
|
|
/*
|
|
* Preload any snapshots that are being removed.
|
|
*/
|
|
if (!laopts->origin_only && lv_is_origin(lv)) {
|
|
dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) {
|
|
if (!(lvl_pre = find_lv_in_vg_by_lvid(lv_pre->vg, &snap_seg->cow->lvid))) {
|
|
log_error(INTERNAL_ERROR "LV %s (%s) missing from preload metadata",
|
|
snap_seg->cow->name, snap_seg->cow->lvid.id[1].uuid);
|
|
goto out;
|
|
}
|
|
if (!lv_is_cow(lvl_pre->lv) &&
|
|
!_lv_preload(lvl_pre->lv, laopts, &flush_required))
|
|
goto_out;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!monitor_dev_for_events(cmd, lv, laopts, 0))
|
|
/* FIXME Consider aborting here */
|
|
stack;
|
|
|
|
critical_section_inc(cmd, "suspending");
|
|
if (pvmove_lv)
|
|
critical_section_inc(cmd, "suspending pvmove LV");
|
|
|
|
if (!laopts->origin_only &&
|
|
(lv_is_origin(lv_pre) || lv_is_cow(lv_pre)))
|
|
lockfs = 1;
|
|
|
|
/*
|
|
* Suspending an LV directly above a PVMOVE LV also
|
|
* suspends other LVs using that same PVMOVE LV.
|
|
* FIXME Remove this and delay the 'clear node' until
|
|
* after the code knows whether there's a different
|
|
* inactive table to load or not instead so lv_suspend
|
|
* can be called separately for each LV safely.
|
|
*/
|
|
if ((lv_pre->vg->status & PRECOMMITTED) &&
|
|
(lv_pre->status & LOCKED) && find_pvmove_lv_in_lv(lv_pre)) {
|
|
if (!_lv_suspend_lv(lv_pre, laopts, lockfs, flush_required)) {
|
|
critical_section_dec(cmd, "failed precommitted suspend");
|
|
if (pvmove_lv)
|
|
critical_section_dec(cmd, "failed precommitted suspend (pvmove)");
|
|
goto_out;
|
|
}
|
|
} else {
|
|
/* Normal suspend */
|
|
if (!_lv_suspend_lv(lv, laopts, lockfs, flush_required)) {
|
|
critical_section_dec(cmd, "failed suspend");
|
|
if (pvmove_lv)
|
|
critical_section_dec(cmd, "failed suspend (pvmove)");
|
|
goto_out;
|
|
}
|
|
}
|
|
|
|
r = 1;
|
|
out:
|
|
if (lv_pre)
|
|
release_vg(lv_pre->vg);
|
|
if (lv) {
|
|
lv_release_replicator_vgs(lv);
|
|
release_vg(lv->vg);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* In a cluster, set exclusive to indicate that only one node is using the
|
|
* device. Any preloaded tables may then use non-clustered targets.
|
|
*
|
|
* Returns success if the device is not active
|
|
*/
|
|
int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only, unsigned exclusive)
|
|
{
|
|
struct lv_activate_opts laopts = {
|
|
.origin_only = origin_only,
|
|
.exclusive = exclusive
|
|
};
|
|
|
|
return _lv_suspend(cmd, lvid_s, &laopts, 0);
|
|
}
|
|
|
|
/* No longer used */
|
|
/***********
|
|
int lv_suspend(struct cmd_context *cmd, const char *lvid_s)
|
|
{
|
|
return _lv_suspend(cmd, lvid_s, 1);
|
|
}
|
|
***********/
|
|
|
|
static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
|
|
struct lv_activate_opts *laopts, int error_if_not_active)
|
|
{
|
|
struct logical_volume *lv;
|
|
struct lvinfo info;
|
|
int r = 0;
|
|
int messages_only = 0;
|
|
|
|
if (!activation())
|
|
return 1;
|
|
|
|
if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
|
|
goto_out;
|
|
|
|
if (lv_is_thin_pool(lv) && laopts->origin_only)
|
|
messages_only = 1;
|
|
|
|
if (!lv_is_origin(lv))
|
|
laopts->origin_only = 0;
|
|
|
|
if (test_mode()) {
|
|
_skip("Resuming %s%s%s.", lv->name, laopts->origin_only ? " without snapshots" : "",
|
|
laopts->revert ? " (reverting)" : "");
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
log_debug("Resuming LV %s/%s%s%s%s.", lv->vg->name, lv->name,
|
|
error_if_not_active ? "" : " if active",
|
|
laopts->origin_only ? " without snapshots" : "",
|
|
laopts->revert ? " (reverting)" : "");
|
|
|
|
if (!lv_info(cmd, lv, laopts->origin_only, &info, 0, 0))
|
|
goto_out;
|
|
|
|
if (!info.exists || !(info.suspended || messages_only)) {
|
|
if (error_if_not_active)
|
|
goto_out;
|
|
r = 1;
|
|
if (!info.suspended)
|
|
critical_section_dec(cmd, "already resumed");
|
|
goto out;
|
|
}
|
|
|
|
laopts->read_only = _passes_readonly_filter(cmd, lv);
|
|
|
|
if (!_lv_activate_lv(lv, laopts))
|
|
goto_out;
|
|
|
|
critical_section_dec(cmd, "resumed");
|
|
|
|
if (!monitor_dev_for_events(cmd, lv, laopts, 1))
|
|
stack;
|
|
|
|
r = 1;
|
|
out:
|
|
if (lv)
|
|
release_vg(lv->vg);
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* In a cluster, set exclusive to indicate that only one node is using the
|
|
* device. Any tables loaded may then use non-clustered targets.
|
|
*
|
|
* @origin_only
|
|
* @exclusive This parameter only has an affect in cluster-context.
|
|
* It forces local target type to be used (instead of
|
|
* cluster-aware type).
|
|
* Returns success if the device is not active
|
|
*/
|
|
int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
|
|
unsigned origin_only, unsigned exclusive,
|
|
unsigned revert)
|
|
{
|
|
struct lv_activate_opts laopts = {
|
|
.origin_only = origin_only,
|
|
.exclusive = exclusive,
|
|
.revert = revert
|
|
};
|
|
|
|
return _lv_resume(cmd, lvid_s, &laopts, 0);
|
|
}
|
|
|
|
int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only)
|
|
{
|
|
struct lv_activate_opts laopts = { .origin_only = origin_only, };
|
|
|
|
return _lv_resume(cmd, lvid_s, &laopts, 1);
|
|
}
|
|
|
|
static int _lv_has_open_snapshots(struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *snap_seg;
|
|
struct lvinfo info;
|
|
int r = 0;
|
|
|
|
dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list) {
|
|
if (!lv_info(lv->vg->cmd, snap_seg->cow, 0, &info, 1, 0)) {
|
|
r = 1;
|
|
continue;
|
|
}
|
|
|
|
if (info.exists && info.open_count) {
|
|
log_error("LV %s/%s has open snapshot %s: "
|
|
"not deactivating", lv->vg->name, lv->name,
|
|
snap_seg->cow->name);
|
|
r = 1;
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int lv_deactivate(struct cmd_context *cmd, const char *lvid_s)
|
|
{
|
|
struct logical_volume *lv;
|
|
struct lvinfo info;
|
|
int r = 0;
|
|
|
|
if (!activation())
|
|
return 1;
|
|
|
|
if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
|
|
goto out;
|
|
|
|
if (test_mode()) {
|
|
_skip("Deactivating '%s'.", lv->name);
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
log_debug("Deactivating %s/%s.", lv->vg->name, lv->name);
|
|
|
|
if (!lv_info(cmd, lv, 0, &info, 1, 0))
|
|
goto_out;
|
|
|
|
if (!info.exists) {
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (lv_is_visible(lv)) {
|
|
if (!lv_check_not_in_use(cmd, lv, &info))
|
|
goto_out;
|
|
|
|
if (lv_is_origin(lv) && _lv_has_open_snapshots(lv))
|
|
goto_out;
|
|
}
|
|
|
|
if (!lv_read_replicator_vgs(lv))
|
|
goto_out;
|
|
|
|
lv_calculate_readahead(lv, NULL);
|
|
|
|
if (!monitor_dev_for_events(cmd, lv, NULL, 0))
|
|
stack;
|
|
|
|
critical_section_inc(cmd, "deactivating");
|
|
r = _lv_deactivate(lv);
|
|
critical_section_dec(cmd, "deactivated");
|
|
|
|
if (!lv_info(cmd, lv, 0, &info, 0, 0) || info.exists)
|
|
r = 0;
|
|
out:
|
|
if (lv) {
|
|
lv_release_replicator_vgs(lv);
|
|
release_vg(lv->vg);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/* Test if LV passes filter */
|
|
int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
|
|
int *activate_lv)
|
|
{
|
|
struct logical_volume *lv;
|
|
int r = 0;
|
|
|
|
if (!activation()) {
|
|
*activate_lv = 1;
|
|
return 1;
|
|
}
|
|
|
|
if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
|
|
goto out;
|
|
|
|
if (!_passes_activation_filter(cmd, lv)) {
|
|
log_verbose("Not activating %s/%s since it does not pass "
|
|
"activation filter.", lv->vg->name, lv->name);
|
|
*activate_lv = 0;
|
|
} else
|
|
*activate_lv = 1;
|
|
r = 1;
|
|
out:
|
|
if (lv)
|
|
release_vg(lv->vg);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int _lv_activate(struct cmd_context *cmd, const char *lvid_s,
|
|
struct lv_activate_opts *laopts, int filter)
|
|
{
|
|
struct logical_volume *lv;
|
|
struct lvinfo info;
|
|
int r = 0;
|
|
|
|
if (!activation())
|
|
return 1;
|
|
|
|
if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
|
|
goto out;
|
|
|
|
if (filter && !_passes_activation_filter(cmd, lv)) {
|
|
log_error("Not activating %s/%s since it does not pass "
|
|
"activation filter.", lv->vg->name, lv->name);
|
|
goto out;
|
|
}
|
|
|
|
if ((!lv->vg->cmd->partial_activation) && (lv->status & PARTIAL_LV)) {
|
|
log_error("Refusing activation of partial LV %s. Use --partial to override.",
|
|
lv->name);
|
|
goto_out;
|
|
}
|
|
|
|
if (lv_has_unknown_segments(lv)) {
|
|
log_error("Refusing activation of LV %s containing "
|
|
"an unrecognised segment.", lv->name);
|
|
goto_out;
|
|
}
|
|
|
|
if (test_mode()) {
|
|
_skip("Activating '%s'.", lv->name);
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (filter)
|
|
laopts->read_only = _passes_readonly_filter(cmd, lv);
|
|
|
|
log_debug("Activating %s/%s%s%s.", lv->vg->name, lv->name,
|
|
laopts->exclusive ? " exclusively" : "",
|
|
laopts->read_only ? " read-only" : "");
|
|
|
|
if (!lv_info(cmd, lv, 0, &info, 0, 0))
|
|
goto_out;
|
|
|
|
/*
|
|
* Nothing to do?
|
|
*/
|
|
if (info.exists && !info.suspended && info.live_table &&
|
|
(info.read_only == read_only_lv(lv, laopts))) {
|
|
r = 1;
|
|
goto out;
|
|
}
|
|
|
|
if (!lv_read_replicator_vgs(lv))
|
|
goto_out;
|
|
|
|
lv_calculate_readahead(lv, NULL);
|
|
|
|
critical_section_inc(cmd, "activating");
|
|
if (!(r = _lv_activate_lv(lv, laopts)))
|
|
stack;
|
|
critical_section_dec(cmd, "activated");
|
|
|
|
if (r && !monitor_dev_for_events(cmd, lv, laopts, 1))
|
|
stack;
|
|
|
|
out:
|
|
if (lv) {
|
|
lv_release_replicator_vgs(lv);
|
|
release_vg(lv->vg);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/* Activate LV */
|
|
int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive)
|
|
{
|
|
struct lv_activate_opts laopts = { .exclusive = exclusive };
|
|
|
|
if (!_lv_activate(cmd, lvid_s, &laopts, 0))
|
|
return_0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Activate LV only if it passes filter */
|
|
int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive)
|
|
{
|
|
struct lv_activate_opts laopts = { .exclusive = exclusive };
|
|
|
|
if (!_lv_activate(cmd, lvid_s, &laopts, 1))
|
|
return_0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv)
|
|
{
|
|
int r = 1;
|
|
|
|
if (!lv) {
|
|
r = dm_mknodes(NULL);
|
|
fs_unlock();
|
|
return r;
|
|
}
|
|
|
|
if (!activation())
|
|
return 1;
|
|
|
|
r = dev_manager_mknodes(lv);
|
|
|
|
fs_unlock();
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Does PV use VG somewhere in its construction?
|
|
* Returns 1 on failure.
|
|
*/
|
|
int pv_uses_vg(struct physical_volume *pv,
|
|
struct volume_group *vg)
|
|
{
|
|
if (!activation() || !pv->dev)
|
|
return 0;
|
|
|
|
if (!dm_is_dm_major(MAJOR(pv->dev->dev)))
|
|
return 0;
|
|
|
|
return dev_manager_device_uses_vg(pv->dev, vg);
|
|
}
|
|
|
|
void activation_release(void)
|
|
{
|
|
dev_manager_release();
|
|
}
|
|
|
|
void activation_exit(void)
|
|
{
|
|
dev_manager_exit();
|
|
}
|
|
#endif
|