mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
0bf836aa14
clang-tidy: avoid using 'else' after return - give more readable code, and also saves indention level.
1656 lines
42 KiB
C
1656 lines
42 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2017 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "lib.h"
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#include "metadata.h"
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#include "display.h"
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#include "activate.h"
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#include "toolcontext.h"
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#include "segtype.h"
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#include "str_list.h"
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#include "lvmlockd.h"
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#include <time.h>
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#include <sys/utsname.h>
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static struct utsname _utsname;
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static int _utsinit = 0;
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int lv_is_historical(const struct logical_volume *lv)
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{
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return lv->this_glv && lv->this_glv->is_historical;
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}
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static struct dm_list *_format_pvsegs(struct dm_pool *mem, const struct lv_segment *seg,
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int range_format, int metadata_areas_only,
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int mark_hidden)
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{
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unsigned int s;
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const char *name = NULL;
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uint32_t extent = 0;
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uint32_t seg_len = 0;
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char extent_str[32];
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struct logical_volume *lv;
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int visible = 1;
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char *list_item;
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size_t list_item_len;
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struct dm_list *result = NULL;
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if (!(result = str_list_create(mem))) {
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log_error("_format_pvsegs: str_list_create failed");
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goto bad;
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}
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if (metadata_areas_only && (!seg_is_raid_with_meta(seg) || !seg->meta_areas || lv_is_raid_metadata(seg->lv) || lv_is_raid_image(seg->lv)))
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goto out;
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for (s = 0; s < seg->area_count; s++) {
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switch (metadata_areas_only ? seg_metatype(seg, s) : seg_type(seg, s)) {
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case AREA_LV:
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lv = metadata_areas_only ? seg_metalv(seg, s) : seg_lv(seg, s);
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seg_len = metadata_areas_only ? seg_metalv(seg, s)->le_count : seg_lv(seg, s)->le_count;
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visible = lv_is_visible(lv);
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name = lv->name;
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extent = metadata_areas_only ? seg_le(seg, s) : 0;
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break;
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case AREA_PV:
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/* Raid metadata never uses PVs directly */
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if (metadata_areas_only)
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continue;
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name = dev_name(seg_dev(seg, s));
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extent = seg_pe(seg, s);
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seg_len = seg->area_len;
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break;
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case AREA_UNASSIGNED:
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name = "unassigned";
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extent = 0;
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seg_len = 0;
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break;
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default:
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log_error(INTERNAL_ERROR "Unknown area segtype.");
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goto bad;
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}
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list_item_len = strlen(name);
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if (!visible && mark_hidden)
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/* +2 for [ ] */
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list_item_len += 2;
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if (range_format) {
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if (dm_snprintf(extent_str, sizeof(extent_str),
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":%" PRIu32 "-%" PRIu32,
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extent, extent + seg_len - 1) < 0) {
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log_error("_format_pvseggs: extent range dm_snprintf failed");
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goto bad;
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}
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} else {
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if (dm_snprintf(extent_str, sizeof(extent_str),
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"(%" PRIu32 ")", extent) < 0) {
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log_error("_format_pvsegs: extent number dm_snprintf failed");
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goto bad;
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}
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}
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list_item_len += strlen(extent_str);
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/* trialing 0 */
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list_item_len += 1;
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if (!(list_item = dm_pool_zalloc(mem, list_item_len))) {
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log_error("_format_pvsegs: list item dm_pool_zalloc failed");
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goto bad;
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}
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if (dm_snprintf(list_item, list_item_len,
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"%s%s%s%s",
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(!visible && mark_hidden) ? "[" : "",
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name,
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(!visible && mark_hidden) ? "]" : "",
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extent_str) < 0) {
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log_error("_format_pvsegs: list item dmsnprintf failed");
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goto bad;
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}
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if (!str_list_add_no_dup_check(mem, result, list_item)) {
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log_error("_format_pvsegs: failed to add item to list");
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goto bad;
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}
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}
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out:
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return result;
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bad:
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dm_pool_free(mem, result);
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return NULL;
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}
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struct dm_list *lvseg_devices(struct dm_pool *mem, const struct lv_segment *seg)
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{
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return _format_pvsegs(mem, seg, 0, 0, 0);
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}
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char *lvseg_devices_str(struct dm_pool *mem, const struct lv_segment *seg)
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{
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struct dm_list *list;
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if (!(list = lvseg_devices(mem, seg)))
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return_NULL;
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return str_list_to_str(mem, list, ",");
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}
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struct dm_list *lvseg_metadata_devices(struct dm_pool *mem, const struct lv_segment *seg)
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{
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return _format_pvsegs(mem, seg, 0, 1, 0);
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}
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char *lvseg_metadata_devices_str(struct dm_pool *mem, const struct lv_segment *seg)
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{
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struct dm_list *list;
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if (!(list = lvseg_devices(mem, seg)))
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return_NULL;
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return str_list_to_str(mem, list, ",");
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}
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struct dm_list *lvseg_seg_pe_ranges(struct dm_pool *mem, const struct lv_segment *seg)
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{
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return _format_pvsegs(mem, seg, 1, 0, 0);
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}
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char *lvseg_seg_pe_ranges_str(struct dm_pool *mem, const struct lv_segment *seg)
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{
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struct dm_list *list;
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if (!(list = lvseg_seg_pe_ranges(mem, seg)))
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return_NULL;
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return str_list_to_str(mem, list, " ");
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}
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struct dm_list *lvseg_seg_le_ranges(struct dm_pool *mem, const struct lv_segment *seg)
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{
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return _format_pvsegs(mem, seg, 1, 0, seg->lv->vg->cmd->report_mark_hidden_devices);
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}
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char *lvseg_seg_le_ranges_str(struct dm_pool *mem, const struct lv_segment *seg)
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{
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struct dm_list *list;
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if (!(list = lvseg_seg_pe_ranges(mem, seg)))
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return_NULL;
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return str_list_to_str(mem, list, seg->lv->vg->cmd->report_list_item_separator);
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}
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struct dm_list *lvseg_seg_metadata_le_ranges(struct dm_pool *mem, const struct lv_segment *seg)
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{
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return _format_pvsegs(mem, seg, 1, 1, seg->lv->vg->cmd->report_mark_hidden_devices);
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}
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char *lvseg_seg_metadata_le_ranges_str(struct dm_pool *mem, const struct lv_segment *seg)
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{
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struct dm_list *list;
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if (!(list = lvseg_seg_metadata_le_ranges(mem, seg)))
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return_NULL;
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return str_list_to_str(mem, list, seg->lv->vg->cmd->report_list_item_separator);
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}
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char *lvseg_tags_dup(const struct lv_segment *seg)
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{
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return tags_format_and_copy(seg->lv->vg->vgmem, &seg->tags);
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}
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char *lvseg_segtype_dup(struct dm_pool *mem, const struct lv_segment *seg)
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{
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return dm_pool_strdup(mem, lvseg_name(seg));
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}
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char *lvseg_discards_dup(struct dm_pool *mem, const struct lv_segment *seg)
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{
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if (lv_is_thin_pool(seg->lv))
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return dm_pool_strdup(mem, get_pool_discards_name(seg->discards));
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log_error("Cannot query non thin-pool segment of LV %s for discards property.",
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display_lvname(seg->lv));
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return NULL;
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}
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char *lvseg_kernel_discards_dup_with_info_and_seg_status(struct dm_pool *mem, const struct lv_with_info_and_seg_status *lvdm)
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{
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const char *s = "";
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char *ret;
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thin_discards_t d;
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if (lvdm->seg_status.type == SEG_STATUS_THIN_POOL) {
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switch (lvdm->seg_status.thin_pool->discards) {
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case DM_THIN_DISCARDS_IGNORE: d = THIN_DISCARDS_IGNORE; break;
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case DM_THIN_DISCARDS_NO_PASSDOWN: d = THIN_DISCARDS_NO_PASSDOWN; break;
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case DM_THIN_DISCARDS_PASSDOWN: d = THIN_DISCARDS_PASSDOWN; break;
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default:
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log_error("Kernel reports unknown discards status %u.",
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lvdm->seg_status.thin_pool->discards);
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return 0;
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}
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s = get_pool_discards_name(d);
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}
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if (!(ret = dm_pool_strdup(mem, s))) {
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log_error("lvseg_kernel_discards_dup_with_info_and_seg_status: dm_pool_strdup failed.");
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return NULL;
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}
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return ret;
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}
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char *lvseg_kernel_discards_dup(struct dm_pool *mem, const struct lv_segment *seg)
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{
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char *ret = NULL;
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struct lv_with_info_and_seg_status status = {
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.seg_status.type = SEG_STATUS_NONE
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};
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if (!lv_is_thin_pool(seg->lv))
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return NULL;
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if (!(status.seg_status.mem = dm_pool_create("reporter_pool", 1024)))
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return_NULL;
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if (!(status.info_ok = lv_info_with_seg_status(seg->lv->vg->cmd, seg, &status, 0, 0)))
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goto_bad;
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if (!(ret = lvseg_kernel_discards_dup_with_info_and_seg_status(mem, &status)))
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stack;
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bad:
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dm_pool_destroy(status.seg_status.mem);
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return ret;
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}
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char *lvseg_cachemode_dup(struct dm_pool *mem, const struct lv_segment *seg)
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{
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const char *name = get_cache_mode_name(seg);
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if (!name)
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return_NULL;
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return dm_pool_strdup(mem, name);
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}
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#ifdef DMEVENTD
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# include "libdevmapper-event.h"
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#endif
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char *lvseg_monitor_dup(struct dm_pool *mem, const struct lv_segment *seg)
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{
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const char *s = "";
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#ifdef DMEVENTD
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struct lvinfo info;
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int pending = 0, monitored;
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struct lv_segment *segm = (struct lv_segment *) seg;
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if (lv_is_cow(seg->lv) && !lv_is_merging_cow(seg->lv))
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segm = first_seg(seg->lv->snapshot->lv);
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// log_debug("Query LV:%s mon:%s segm:%s tgtm:%p segmon:%d statusm:%d", seg->lv->name, segm->lv->name, segm->segtype->name, segm->segtype->ops->target_monitored, seg_monitored(segm), (int)(segm->status & PVMOVE));
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if ((dmeventd_monitor_mode() != 1) ||
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!segm->segtype->ops ||
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!segm->segtype->ops->target_monitored)
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/* Nothing to do, monitoring not supported */;
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else if (lv_is_cow_covering_origin(seg->lv))
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/* Nothing to do, snapshot already covers origin */;
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else if (!seg_monitored(segm) || (segm->status & PVMOVE))
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s = "not monitored";
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else if (lv_info(seg->lv->vg->cmd, seg->lv, 1, &info, 0, 0) && info.exists) {
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monitored = segm->segtype->ops->target_monitored(segm, &pending);
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if (pending)
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s = "pending";
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else
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s = (monitored) ? "monitored" : "not monitored";
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} // else log_debug("Not active");
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#endif
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return dm_pool_strdup(mem, s);
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}
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uint64_t lvseg_chunksize(const struct lv_segment *seg)
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{
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uint64_t size;
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if (lv_is_cow(seg->lv))
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size = (uint64_t) find_snapshot(seg->lv)->chunk_size;
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else if (seg_is_pool(seg))
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size = (uint64_t) seg->chunk_size;
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else if (seg_is_cache(seg))
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return lvseg_chunksize(first_seg(seg->pool_lv));
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else
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size = UINT64_C(0);
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return size;
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}
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const char *lvseg_name(const struct lv_segment *seg)
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{
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/* Support even segtypes without 'ops' */
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if (seg->segtype->ops &&
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seg->segtype->ops->name)
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return seg->segtype->ops->name(seg);
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return seg->segtype->name;
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}
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uint64_t lvseg_start(const struct lv_segment *seg)
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{
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return (uint64_t) seg->le * seg->lv->vg->extent_size;
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}
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uint64_t lvseg_size(const struct lv_segment *seg)
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{
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return (uint64_t) seg->len * seg->lv->vg->extent_size;
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}
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dm_percent_t lvseg_percent_with_info_and_seg_status(const struct lv_with_info_and_seg_status *lvdm,
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percent_get_t type)
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{
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dm_percent_t p;
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uint64_t csize;
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const struct lv_segment *seg;
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const struct lv_seg_status *s = &lvdm->seg_status;
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/*
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* TODO:
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* Later move to segment methods, instead of using single place.
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* Also handle logic for mirror segments and it total_* summing
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* Esentially rework _target_percent API for segtype.
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*/
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switch (s->type) {
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case SEG_STATUS_CACHE:
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if (s->cache->fail || s->cache->error)
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p = DM_PERCENT_INVALID;
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else {
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switch (type) {
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case PERCENT_GET_DIRTY:
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p = (s->cache->used_blocks) ?
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dm_make_percent(s->cache->dirty_blocks,
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s->cache->used_blocks) : DM_PERCENT_0;
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break;
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case PERCENT_GET_METADATA:
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p = dm_make_percent(s->cache->metadata_used_blocks,
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s->cache->metadata_total_blocks);
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break;
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default:
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p = dm_make_percent(s->cache->used_blocks,
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s->cache->total_blocks);
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}
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}
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break;
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case SEG_STATUS_RAID:
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switch (type) {
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case PERCENT_GET_DIRTY:
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p = dm_make_percent(s->raid->insync_regions, s->raid->total_regions);
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break;
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default:
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p = DM_PERCENT_INVALID;
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}
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break;
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case SEG_STATUS_SNAPSHOT:
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if (s->snapshot->merge_failed)
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p = DM_PERCENT_INVALID;
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else if (s->snapshot->invalid)
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p = DM_PERCENT_100; /* Shown as 100% full */
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else if (s->snapshot->has_metadata_sectors &&
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(s->snapshot->used_sectors == s->snapshot->metadata_sectors))
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p = DM_PERCENT_0;
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else
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p = dm_make_percent(s->snapshot->used_sectors,
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s->snapshot->total_sectors);
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break;
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case SEG_STATUS_THIN_POOL:
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if (s->thin_pool->fail || s->thin_pool->error)
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p = DM_PERCENT_INVALID;
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else if (type == PERCENT_GET_METADATA)
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p = dm_make_percent(s->thin_pool->used_metadata_blocks,
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s->thin_pool->total_metadata_blocks);
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else
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p = dm_make_percent(s->thin_pool->used_data_blocks,
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s->thin_pool->total_data_blocks);
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break;
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case SEG_STATUS_THIN:
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if (s->thin->fail || (type != PERCENT_GET_DATA))
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/* TODO: expose highest mapped sector */
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p = DM_PERCENT_INVALID;
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else {
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seg = lvdm->seg_status.seg;
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/* Pool allocates whole chunk so round-up to nearest one */
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csize = first_seg(seg->pool_lv)->chunk_size;
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csize = ((seg->lv->size + csize - 1) / csize) * csize;
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if (s->thin->mapped_sectors <= csize)
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p = dm_make_percent(s->thin->mapped_sectors, csize);
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else {
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log_warn("WARNING: Thin volume %s maps %s while the size is only %s.",
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display_lvname(seg->lv),
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display_size(seg->lv->vg->cmd, s->thin->mapped_sectors),
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display_size(seg->lv->vg->cmd, csize));
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/* Don't show nonsense numbers like i.e. 1000% full */
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p = DM_PERCENT_100;
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}
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}
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break;
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default:
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p = DM_PERCENT_INVALID;
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}
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return p;
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}
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|
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uint32_t lv_kernel_read_ahead(const struct logical_volume *lv)
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{
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struct lvinfo info;
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|
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if (!lv_info(lv->vg->cmd, lv, 0, &info, 0, 1) || !info.exists)
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return UINT32_MAX;
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return info.read_ahead;
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}
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|
|
struct pv_and_int {
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struct physical_volume *pv;
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int *i;
|
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};
|
|
|
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static int _lv_is_on_pv(struct logical_volume *lv, void *data)
|
|
{
|
|
int *is_on_pv = ((struct pv_and_int *)data)->i;
|
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struct physical_volume *pv = ((struct pv_and_int *)data)->pv;
|
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uint32_t s;
|
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struct physical_volume *pv2;
|
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struct lv_segment *seg;
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|
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if (!lv || !(first_seg(lv)))
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|
return_0;
|
|
|
|
/*
|
|
* If the LV has already been found to be on the PV, then
|
|
* we don't need to continue checking - just return.
|
|
*/
|
|
if (*is_on_pv)
|
|
return 1;
|
|
|
|
dm_list_iterate_items(seg, &lv->segments) {
|
|
for (s = 0; s < seg->area_count; s++) {
|
|
if (seg_type(seg, s) != AREA_PV)
|
|
continue;
|
|
|
|
pv2 = seg_pv(seg, s);
|
|
if (id_equal(&pv->id, &pv2->id)) {
|
|
*is_on_pv = 1;
|
|
return 1;
|
|
}
|
|
if (pv->dev && pv2->dev &&
|
|
(pv->dev->dev == pv2->dev->dev)) {
|
|
*is_on_pv = 1;
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* lv_is_on_pv
|
|
* @lv:
|
|
* @pv:
|
|
*
|
|
* If any of the component devices of the LV are on the given PV, 1
|
|
* is returned; otherwise 0. For example if one of the images of a RAID
|
|
* (or its metadata device) is on the PV, 1 would be returned for the
|
|
* top-level LV.
|
|
* If you wish to check the images themselves, you should pass them.
|
|
*
|
|
* Returns: 1 if LV (or part of LV) is on PV, 0 otherwise
|
|
*/
|
|
int lv_is_on_pv(struct logical_volume *lv, struct physical_volume *pv)
|
|
{
|
|
int is_on_pv = 0;
|
|
struct pv_and_int context = { pv, &is_on_pv };
|
|
|
|
if (!_lv_is_on_pv(lv, &context) ||
|
|
!for_each_sub_lv(lv, _lv_is_on_pv, &context))
|
|
/* Failure only happens if bad arguments are passed */
|
|
log_error(INTERNAL_ERROR "for_each_sub_lv failure.");
|
|
|
|
log_debug_metadata("%s is %son %s", lv->name,
|
|
is_on_pv ? "" : "not ", pv_dev_name(pv));
|
|
return is_on_pv;
|
|
}
|
|
|
|
/*
|
|
* lv_is_on_pvs
|
|
* @lv
|
|
* @pvs
|
|
*
|
|
* Returns 1 if the LV (or part of the LV) is on any of the pvs
|
|
* in the list, 0 otherwise.
|
|
*/
|
|
int lv_is_on_pvs(struct logical_volume *lv, struct dm_list *pvs)
|
|
{
|
|
struct pv_list *pvl;
|
|
|
|
dm_list_iterate_items(pvl, pvs)
|
|
if (lv_is_on_pv(lv, pvl->pv))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
struct logical_volume *lv_origin_lv(const struct logical_volume *lv)
|
|
{
|
|
struct logical_volume *origin = NULL;
|
|
|
|
if (lv_is_cow(lv))
|
|
origin = origin_from_cow(lv);
|
|
else if (lv_is_cache(lv) && !lv_is_pending_delete(lv))
|
|
origin = seg_lv(first_seg(lv), 0);
|
|
else if (lv_is_thin_volume(lv) && first_seg(lv)->origin)
|
|
origin = first_seg(lv)->origin;
|
|
else if (lv_is_thin_volume(lv) && first_seg(lv)->external_lv)
|
|
origin = first_seg(lv)->external_lv;
|
|
|
|
return origin;
|
|
}
|
|
|
|
static char *_do_lv_origin_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *origin_lv = lv_origin_lv(lv);
|
|
|
|
if (!origin_lv)
|
|
return NULL;
|
|
|
|
if (uuid)
|
|
return lv_uuid_dup(mem, origin_lv);
|
|
|
|
return lv_name_dup(mem, origin_lv);
|
|
}
|
|
|
|
char *lv_origin_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_origin_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_origin_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_origin_dup(mem, lv, 1);
|
|
}
|
|
|
|
char *lv_name_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return dm_pool_strdup(mem, lv->name);
|
|
}
|
|
|
|
char *lv_fullname_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
char lvfullname[NAME_LEN * 2 + 2];
|
|
|
|
if (dm_snprintf(lvfullname, sizeof(lvfullname), "%s/%s", lv->vg->name, lv->name) < 0) {
|
|
log_error("lvfullname snprintf failed");
|
|
return NULL;
|
|
}
|
|
|
|
return dm_pool_strdup(mem, lvfullname);
|
|
}
|
|
|
|
struct logical_volume *lv_parent(const struct logical_volume *lv)
|
|
{
|
|
struct logical_volume *parent_lv = NULL;
|
|
struct lv_segment *seg;
|
|
|
|
if (lv_is_visible(lv))
|
|
;
|
|
else if ((lv_is_mirror_image(lv) || lv_is_mirror_log(lv)) ||
|
|
(lv_is_raid_image(lv) || lv_is_raid_metadata(lv)) ||
|
|
(lv_is_cache_pool_data(lv) || lv_is_cache_pool_metadata(lv)) ||
|
|
(lv_is_thin_pool_data(lv) || lv_is_thin_pool_metadata(lv))) {
|
|
if (!(seg = get_only_segment_using_this_lv(lv)))
|
|
stack;
|
|
else
|
|
parent_lv = seg->lv;
|
|
}
|
|
|
|
return parent_lv;
|
|
}
|
|
|
|
char *lv_parent_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
struct logical_volume *parent_lv = lv_parent(lv);
|
|
|
|
return dm_pool_strdup(mem, parent_lv ? parent_lv->name : "");
|
|
}
|
|
|
|
char *lv_modules_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
struct dm_list *modules;
|
|
|
|
if (!(modules = str_list_create(mem))) {
|
|
log_error("modules str_list allocation failed");
|
|
return NULL;
|
|
}
|
|
|
|
if (!list_lv_modules(mem, lv, modules))
|
|
return_NULL;
|
|
|
|
return tags_format_and_copy(mem, modules);
|
|
}
|
|
|
|
struct logical_volume *lv_mirror_log_lv(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg;
|
|
|
|
dm_list_iterate_items(seg, &lv->segments) {
|
|
if (seg_is_mirrored(seg) && seg->log_lv)
|
|
return seg->log_lv;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static char *_do_lv_mirror_log_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *mirror_log_lv = lv_mirror_log_lv(lv);
|
|
|
|
if (!mirror_log_lv)
|
|
return NULL;
|
|
|
|
if (uuid)
|
|
return lv_uuid_dup(mem, mirror_log_lv);
|
|
|
|
return lv_name_dup(mem, mirror_log_lv);
|
|
}
|
|
|
|
char *lv_mirror_log_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_mirror_log_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_mirror_log_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_mirror_log_dup(mem, lv, 1);
|
|
}
|
|
|
|
struct logical_volume *lv_pool_lv(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg = (lv_is_thin_volume(lv) || lv_is_cache(lv)) ?
|
|
first_seg(lv) : NULL;
|
|
struct logical_volume *pool_lv = seg ? seg->pool_lv : NULL;
|
|
|
|
return pool_lv;
|
|
}
|
|
|
|
static char *_do_lv_pool_lv_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *pool_lv = lv_pool_lv(lv);
|
|
|
|
if (!pool_lv)
|
|
return NULL;
|
|
|
|
if (uuid)
|
|
return lv_uuid_dup(mem, pool_lv);
|
|
|
|
return lv_name_dup(mem, pool_lv);
|
|
}
|
|
|
|
char *lv_pool_lv_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_pool_lv_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_pool_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_pool_lv_dup(mem, lv, 1);
|
|
}
|
|
|
|
struct logical_volume *lv_data_lv(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg = (lv_is_thin_pool(lv) || lv_is_cache_pool(lv)) ?
|
|
first_seg(lv) : NULL;
|
|
struct logical_volume *data_lv = seg ? seg_lv(seg, 0) : NULL;
|
|
|
|
return data_lv;
|
|
}
|
|
|
|
static char *_do_lv_data_lv_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *data_lv = lv_data_lv(lv);
|
|
|
|
if (!data_lv)
|
|
return NULL;
|
|
|
|
if (uuid)
|
|
return lv_uuid_dup(mem, data_lv);
|
|
|
|
return lv_name_dup(mem, data_lv);
|
|
}
|
|
|
|
char *lv_data_lv_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_data_lv_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_data_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_data_lv_dup(mem, lv, 1);
|
|
}
|
|
|
|
struct logical_volume *lv_metadata_lv(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg = (lv_is_thin_pool(lv) || lv_is_cache_pool(lv)) ?
|
|
first_seg(lv) : NULL;
|
|
struct logical_volume *metadata_lv = seg ? seg->metadata_lv : NULL;
|
|
|
|
return metadata_lv;
|
|
}
|
|
|
|
static char *_do_lv_metadata_lv_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *metadata_lv = lv_metadata_lv(lv);
|
|
|
|
if (!metadata_lv)
|
|
return NULL;
|
|
|
|
if (uuid)
|
|
return lv_uuid_dup(mem, metadata_lv);
|
|
|
|
return lv_name_dup(mem, metadata_lv);
|
|
}
|
|
|
|
char *lv_metadata_lv_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_metadata_lv_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_metadata_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_metadata_lv_dup(mem, lv, 1);
|
|
}
|
|
|
|
const char *lv_layer(const struct logical_volume *lv)
|
|
{
|
|
if (lv_is_thin_pool(lv))
|
|
return "tpool";
|
|
|
|
if (lv_is_origin(lv) || lv_is_external_origin(lv))
|
|
return "real";
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int lv_kernel_minor(const struct logical_volume *lv)
|
|
{
|
|
struct lvinfo info;
|
|
|
|
if (lv_info(lv->vg->cmd, lv, 0, &info, 0, 0) && info.exists)
|
|
return info.minor;
|
|
return -1;
|
|
}
|
|
|
|
int lv_kernel_major(const struct logical_volume *lv)
|
|
{
|
|
struct lvinfo info;
|
|
if (lv_info(lv->vg->cmd, lv, 0, &info, 0, 0) && info.exists)
|
|
return info.major;
|
|
return -1;
|
|
}
|
|
|
|
struct logical_volume *lv_convert_lv(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg;
|
|
|
|
if (lv_is_converting(lv) || lv_is_mirrored(lv)) {
|
|
seg = first_seg(lv);
|
|
|
|
/* Temporary mirror is always area_num == 0 */
|
|
if (seg_type(seg, 0) == AREA_LV &&
|
|
is_temporary_mirror_layer(seg_lv(seg, 0)))
|
|
return seg_lv(seg, 0);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static char *_do_lv_convert_lv_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *convert_lv = lv_convert_lv(lv);
|
|
|
|
if (!convert_lv)
|
|
return NULL;
|
|
|
|
if (uuid)
|
|
return lv_uuid_dup(mem, convert_lv);
|
|
|
|
return lv_name_dup(mem, convert_lv);
|
|
}
|
|
|
|
char *lv_convert_lv_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_convert_lv_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_convert_lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_convert_lv_dup(mem, lv, 1);
|
|
}
|
|
|
|
static char *_do_lv_move_pv_dup(struct dm_pool *mem, const struct logical_volume *lv,
|
|
int uuid)
|
|
{
|
|
struct logical_volume *mimage0_lv;
|
|
struct lv_segment *seg;
|
|
struct pv_segment *pvseg;
|
|
|
|
dm_list_iterate_items(seg, &lv->segments) {
|
|
if (seg->status & PVMOVE) {
|
|
if (seg_type(seg, 0) == AREA_LV) { /* atomic pvmove */
|
|
mimage0_lv = seg_lv(seg, 0);
|
|
if (!lv_is_mirror_image(mimage0_lv)) {
|
|
log_error(INTERNAL_ERROR
|
|
"Bad pvmove structure");
|
|
return NULL;
|
|
}
|
|
pvseg = seg_pvseg(first_seg(mimage0_lv), 0);
|
|
} else /* Segment pvmove */
|
|
pvseg = seg_pvseg(seg, 0);
|
|
|
|
if (uuid)
|
|
return pv_uuid_dup(mem, pvseg->pv);
|
|
|
|
return pv_name_dup(mem, pvseg->pv);
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
char *lv_move_pv_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_move_pv_dup(mem, lv, 0);
|
|
}
|
|
|
|
char *lv_move_pv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return _do_lv_move_pv_dup(mem, lv, 1);
|
|
}
|
|
|
|
uint64_t lv_origin_size(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg;
|
|
|
|
if (lv_is_cow(lv))
|
|
return (uint64_t) find_snapshot(lv)->len * lv->vg->extent_size;
|
|
|
|
if (lv_is_thin_volume(lv) && (seg = first_seg(lv)) &&
|
|
seg->external_lv)
|
|
return seg->external_lv->size;
|
|
|
|
if (lv_is_origin(lv))
|
|
return lv->size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint64_t lv_metadata_size(const struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg = (lv_is_thin_pool(lv) || lv_is_cache_pool(lv)) ?
|
|
first_seg(lv) : NULL;
|
|
|
|
return seg ? seg->metadata_lv->size : 0;
|
|
}
|
|
|
|
char *lv_path_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
char *repstr;
|
|
size_t len;
|
|
|
|
/* Only for visible devices that get a link from /dev/vg */
|
|
if (!*lv->vg->name || !lv_is_visible(lv) || lv_is_thin_pool(lv))
|
|
return dm_pool_strdup(mem, "");
|
|
|
|
len = strlen(lv->vg->cmd->dev_dir) + strlen(lv->vg->name) +
|
|
strlen(lv->name) + 2;
|
|
|
|
if (!(repstr = dm_pool_zalloc(mem, len))) {
|
|
log_error("dm_pool_alloc failed");
|
|
return NULL;
|
|
}
|
|
|
|
if (dm_snprintf(repstr, len, "%s%s/%s",
|
|
lv->vg->cmd->dev_dir, lv->vg->name, lv->name) < 0) {
|
|
log_error("lvpath snprintf failed");
|
|
return NULL;
|
|
}
|
|
|
|
return repstr;
|
|
}
|
|
|
|
char *lv_dmpath_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
char *name;
|
|
char *repstr;
|
|
size_t len;
|
|
|
|
if (!*lv->vg->name)
|
|
return dm_pool_strdup(mem, "");
|
|
|
|
if (!(name = dm_build_dm_name(mem, lv->vg->name, lv->name, NULL))) {
|
|
log_error("dm_build_dm_name failed");
|
|
return NULL;
|
|
}
|
|
|
|
len = strlen(dm_dir()) + strlen(name) + 2;
|
|
|
|
if (!(repstr = dm_pool_zalloc(mem, len))) {
|
|
log_error("dm_pool_alloc failed");
|
|
return NULL;
|
|
}
|
|
|
|
if (dm_snprintf(repstr, len, "%s/%s", dm_dir(), name) < 0) {
|
|
log_error("lv_dmpath snprintf failed");
|
|
return NULL;
|
|
}
|
|
|
|
return repstr;
|
|
}
|
|
|
|
char *lv_uuid_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return id_format_and_copy(mem ? mem : lv->vg->vgmem, &lv->lvid.id[1]);
|
|
}
|
|
|
|
char *lv_tags_dup(const struct logical_volume *lv)
|
|
{
|
|
return tags_format_and_copy(lv->vg->vgmem, &lv->tags);
|
|
}
|
|
|
|
uint64_t lv_size(const struct logical_volume *lv)
|
|
{
|
|
return lv->size;
|
|
}
|
|
|
|
int lv_mirror_image_in_sync(const struct logical_volume *lv)
|
|
{
|
|
dm_percent_t percent;
|
|
struct lv_segment *seg = first_seg(lv);
|
|
struct lv_segment *mirror_seg;
|
|
|
|
if (!lv_is_mirror_image(lv) || !seg ||
|
|
!(mirror_seg = find_mirror_seg(seg))) {
|
|
log_error(INTERNAL_ERROR "Cannot find mirror segment.");
|
|
return 0;
|
|
}
|
|
|
|
if (!lv_mirror_percent(lv->vg->cmd, mirror_seg->lv, 0, &percent,
|
|
NULL))
|
|
return_0;
|
|
|
|
return (percent == DM_PERCENT_100) ? 1 : 0;
|
|
}
|
|
|
|
int lv_raid_image_in_sync(const struct logical_volume *lv)
|
|
{
|
|
unsigned s;
|
|
char *raid_health;
|
|
struct lv_segment *seg, *raid_seg = NULL;
|
|
|
|
/*
|
|
* If the LV is not active locally,
|
|
* it doesn't make sense to check status
|
|
*/
|
|
if (!lv_is_active_locally(lv))
|
|
return 0; /* Assume not in-sync */
|
|
|
|
if (!lv_is_raid_image(lv)) {
|
|
log_error(INTERNAL_ERROR "%s is not a RAID image", lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if ((seg = first_seg(lv)))
|
|
raid_seg = get_only_segment_using_this_lv(seg->lv);
|
|
|
|
if (!raid_seg) {
|
|
log_error("Failed to find RAID segment for %s", lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (!seg_is_raid(raid_seg)) {
|
|
log_error("%s on %s is not a RAID segment",
|
|
raid_seg->lv->name, lv->name);
|
|
return 0;
|
|
}
|
|
|
|
/* Find out which sub-LV this is. */
|
|
for (s = 0; s < raid_seg->area_count; s++)
|
|
if (seg_lv(raid_seg, s) == lv)
|
|
break;
|
|
if (s == raid_seg->area_count) {
|
|
log_error(INTERNAL_ERROR
|
|
"sub-LV %s was not found in raid segment",
|
|
lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (!lv_raid_dev_health(raid_seg->lv, &raid_health))
|
|
return_0;
|
|
|
|
if (raid_health[s] == 'A')
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* _lv_raid_healthy
|
|
* @lv: A RAID_IMAGE, RAID_META, or RAID logical volume.
|
|
*
|
|
* Returns: 1 if healthy, 0 if device is not health
|
|
*/
|
|
int lv_raid_healthy(const struct logical_volume *lv)
|
|
{
|
|
unsigned s;
|
|
char *raid_health;
|
|
struct lv_segment *seg, *raid_seg = NULL;
|
|
|
|
/*
|
|
* If the LV is not active locally,
|
|
* it doesn't make sense to check status
|
|
*/
|
|
if (!lv_is_active_locally(lv))
|
|
return 1; /* assume healthy */
|
|
|
|
if (!lv_is_raid_type(lv)) {
|
|
log_error(INTERNAL_ERROR "%s is not of RAID type", lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (lv_is_raid(lv))
|
|
raid_seg = first_seg(lv);
|
|
else if ((seg = first_seg(lv)))
|
|
raid_seg = get_only_segment_using_this_lv(seg->lv);
|
|
|
|
if (!raid_seg) {
|
|
log_error("Failed to find RAID segment for %s", lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (!seg_is_raid(raid_seg)) {
|
|
log_error(INTERNAL_ERROR "%s on %s is not a RAID segment.",
|
|
raid_seg->lv->name, lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (!lv_raid_dev_health(raid_seg->lv, &raid_health))
|
|
return_0;
|
|
|
|
if (lv_is_raid(lv))
|
|
return (strchr(raid_health, 'D')) ? 0 : 1;
|
|
|
|
/* Find out which sub-LV this is. */
|
|
for (s = 0; s < raid_seg->area_count; s++)
|
|
if ((lv_is_raid_image(lv) && (seg_lv(raid_seg, s) == lv)) ||
|
|
(lv_is_raid_metadata(lv) && (seg_metalv(raid_seg, s) == lv)))
|
|
break;
|
|
if (s == raid_seg->area_count) {
|
|
log_error(INTERNAL_ERROR
|
|
"sub-LV %s was not found in raid segment",
|
|
lv->name);
|
|
return 0;
|
|
}
|
|
|
|
if (raid_health[s] == 'D')
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Helper: check for any sub LVs after a disk removing reshape */
|
|
static int _sublvs_remove_after_reshape(const struct logical_volume *lv)
|
|
{
|
|
uint32_t s;
|
|
struct lv_segment *seg = first_seg(lv);
|
|
|
|
for (s = seg->area_count -1; s; s--)
|
|
if (seg_lv(seg, s)->status & LV_REMOVE_AFTER_RESHAPE)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
char *lv_attr_dup_with_info_and_seg_status(struct dm_pool *mem, const struct lv_with_info_and_seg_status *lvdm)
|
|
{
|
|
const struct logical_volume *lv = lvdm->lv;
|
|
struct lv_segment *seg;
|
|
char *repstr;
|
|
|
|
if (!(repstr = dm_pool_zalloc(mem, 11))) {
|
|
log_error("dm_pool_alloc failed");
|
|
return 0;
|
|
}
|
|
|
|
/* Blank if this is a "free space" LV. */
|
|
if (!*lv->name && !lv_is_historical(lv))
|
|
goto out;
|
|
|
|
if (lv_is_pvmove(lv))
|
|
repstr[0] = 'p';
|
|
else if (lv->status & CONVERTING)
|
|
repstr[0] = 'c';
|
|
/* Origin takes precedence over mirror and thin volume */
|
|
else if (lv_is_origin(lv) || lv_is_external_origin(lv))
|
|
repstr[0] = (lv_is_merging_origin(lv)) ? 'O' : 'o';
|
|
else if (lv_is_pool_metadata(lv) ||
|
|
lv_is_pool_metadata_spare(lv) ||
|
|
lv_is_raid_metadata(lv))
|
|
repstr[0] = 'e';
|
|
else if (lv_is_cache_type(lv))
|
|
repstr[0] = 'C';
|
|
else if (lv_is_raid(lv))
|
|
repstr[0] = (lv_is_not_synced(lv)) ? 'R' : 'r';
|
|
else if (lv_is_mirror(lv))
|
|
repstr[0] = (lv_is_not_synced(lv)) ? 'M' : 'm';
|
|
else if (lv_is_thin_volume(lv))
|
|
repstr[0] = lv_is_merging_origin(lv) ?
|
|
'O' : (lv_is_merging_thin_snapshot(lv) ? 'S' : 'V');
|
|
else if (lv_is_virtual(lv))
|
|
repstr[0] = 'v';
|
|
else if (lv_is_thin_pool(lv))
|
|
repstr[0] = 't';
|
|
else if (lv_is_thin_pool_data(lv))
|
|
repstr[0] = 'T';
|
|
else if (lv_is_mirror_image(lv))
|
|
repstr[0] = (lv_mirror_image_in_sync(lv)) ? 'i' : 'I';
|
|
else if (lv_is_raid_image(lv))
|
|
/*
|
|
* Visible RAID_IMAGES are sub-LVs that have been exposed for
|
|
* top-level use by being split from the RAID array with
|
|
* '--splitmirrors 1 --trackchanges'. They always report 'I'.
|
|
*/
|
|
repstr[0] = (!lv_is_visible(lv) && lv_raid_image_in_sync(lv)) ?
|
|
'i' : 'I';
|
|
else if (lv_is_mirror_log(lv))
|
|
repstr[0] = 'l';
|
|
else if (lv_is_cow(lv))
|
|
repstr[0] = (lv_is_merging_cow(lv)) ? 'S' : 's';
|
|
else if (lv_is_cache_origin(lv))
|
|
repstr[0] = 'o';
|
|
else
|
|
repstr[0] = '-';
|
|
|
|
if (lv_is_pvmove(lv))
|
|
repstr[1] = '-';
|
|
else if (lv->status & LVM_WRITE)
|
|
repstr[1] = 'w';
|
|
else if (lv->status & LVM_READ)
|
|
repstr[1] = 'r';
|
|
else
|
|
repstr[1] = '-';
|
|
|
|
repstr[2] = alloc_policy_char(lv->alloc);
|
|
|
|
if (lv_is_locked(lv))
|
|
repstr[2] = toupper(repstr[2]);
|
|
|
|
repstr[3] = (lv->status & FIXED_MINOR) ? 'm' : '-';
|
|
|
|
if (lv_is_historical(lv)) {
|
|
repstr[4] = 'h';
|
|
repstr[5] = '-';
|
|
} else if (!activation() || !lvdm->info_ok ||
|
|
(lvdm->seg_status.type == SEG_STATUS_UNKNOWN)) {
|
|
repstr[4] = 'X'; /* Unknown */
|
|
repstr[5] = 'X'; /* Unknown */
|
|
} else if (lvdm->info.exists) {
|
|
if (lvdm->info.suspended)
|
|
repstr[4] = 's'; /* Suspended */
|
|
else if (lvdm->info.live_table)
|
|
repstr[4] = 'a'; /* Active */
|
|
else if (lvdm->info.inactive_table)
|
|
repstr[4] = 'i'; /* Inactive with table */
|
|
else
|
|
repstr[4] = 'd'; /* Inactive without table */
|
|
|
|
/* Snapshot dropped? */
|
|
if (lvdm->info.live_table &&
|
|
(lvdm->seg_status.type == SEG_STATUS_SNAPSHOT)) {
|
|
if (lvdm->seg_status.snapshot->invalid) {
|
|
if (lvdm->info.suspended)
|
|
repstr[4] = 'S'; /* Susp Inv snapshot */
|
|
else
|
|
repstr[4] = 'I'; /* Invalid snapshot */
|
|
} else if (lvdm->seg_status.snapshot->merge_failed) {
|
|
if (lvdm->info.suspended)
|
|
repstr[4] = 'M'; /* Susp snapshot merge failed */
|
|
else
|
|
repstr[4] = 'm'; /* Snapshot merge failed */
|
|
}
|
|
}
|
|
|
|
/* 'c' when cache/thin-pool is active with needs_check flag
|
|
* 'C' for suspend */
|
|
if ((lv_is_thin_pool(lv) &&
|
|
(lvdm->seg_status.type == SEG_STATUS_THIN_POOL) &&
|
|
lvdm->seg_status.thin_pool->needs_check) ||
|
|
(lv_is_cache(lv) &&
|
|
(lvdm->seg_status.type == SEG_STATUS_CACHE) &&
|
|
lvdm->seg_status.cache->needs_check))
|
|
repstr[4] = lvdm->info.suspended ? 'C' : 'c';
|
|
|
|
/*
|
|
* 'R' indicates read-only activation of a device that
|
|
* does not have metadata flagging it as read-only.
|
|
*/
|
|
if (repstr[1] != 'r' && lvdm->info.read_only)
|
|
repstr[1] = 'R';
|
|
|
|
repstr[5] = (lvdm->info.open_count) ? 'o' : '-';
|
|
} else {
|
|
repstr[4] = '-';
|
|
repstr[5] = '-';
|
|
}
|
|
|
|
if (lv_is_thin_pool(lv) || lv_is_thin_volume(lv))
|
|
repstr[6] = 't';
|
|
else if (lv_is_cache_pool(lv) || lv_is_cache(lv) || lv_is_cache_origin(lv))
|
|
repstr[6] = 'C';
|
|
else if (lv_is_raid_type(lv))
|
|
repstr[6] = 'r';
|
|
else if (lv_is_mirror_type(lv) || lv_is_pvmove(lv))
|
|
repstr[6] = 'm';
|
|
else if (lv_is_cow(lv) || lv_is_origin(lv))
|
|
repstr[6] = 's';
|
|
else if (lv_has_unknown_segments(lv))
|
|
repstr[6] = 'u';
|
|
else if (lv_is_virtual(lv))
|
|
repstr[6] = 'v';
|
|
else
|
|
repstr[6] = '-';
|
|
|
|
if (((lv_is_thin_volume(lv) && (seg = first_seg(lv)) && seg->pool_lv && (seg = first_seg(seg->pool_lv))) ||
|
|
(lv_is_thin_pool(lv) && (seg = first_seg(lv)))) &&
|
|
(seg->zero_new_blocks == THIN_ZERO_YES))
|
|
repstr[7] = 'z';
|
|
else
|
|
repstr[7] = '-';
|
|
|
|
repstr[8] = '-';
|
|
/* TODO: also convert raid health
|
|
* lv_is_raid_type() is to wide
|
|
* NOTE: snapshot origin is 'mostly' showing it's layered status
|
|
*/
|
|
if (lv_is_partial(lv))
|
|
repstr[8] = 'p';
|
|
else if (lv_is_raid_type(lv)) {
|
|
uint64_t n;
|
|
char *sync_action;
|
|
|
|
if (!activation())
|
|
repstr[8] = 'X'; /* Unknown */
|
|
else if (!lv_raid_healthy(lv))
|
|
repstr[8] = 'r'; /* RAID needs 'r'efresh */
|
|
else if (lv_is_raid(lv)) {
|
|
if (lv_raid_mismatch_count(lv, &n) && n)
|
|
repstr[8] = 'm'; /* RAID has 'm'ismatches */
|
|
else if (lv_raid_sync_action(lv, &sync_action) &&
|
|
!strcmp(sync_action, "reshape"))
|
|
repstr[8] = 's'; /* LV is re(s)haping */
|
|
else if (_sublvs_remove_after_reshape(lv))
|
|
repstr[8] = 'R'; /* sub-LV got freed from raid set by reshaping
|
|
and has to be 'R'emoved */
|
|
} else if (lv->status & LV_WRITEMOSTLY)
|
|
repstr[8] = 'w'; /* sub-LV has 'w'ritemostly */
|
|
else if (lv->status & LV_REMOVE_AFTER_RESHAPE)
|
|
repstr[8] = 'R'; /* sub-LV got freed from raid set by reshaping
|
|
and has to be 'R'emoved */
|
|
} else if (lvdm->seg_status.type == SEG_STATUS_CACHE) {
|
|
if (lvdm->seg_status.cache->fail)
|
|
repstr[8] = 'F';
|
|
else if (lvdm->seg_status.cache->read_only)
|
|
repstr[8] = 'M';
|
|
} else if (lvdm->seg_status.type == SEG_STATUS_THIN_POOL) {
|
|
if (lvdm->seg_status.thin_pool->fail)
|
|
repstr[8] = 'F';
|
|
else if (lvdm->seg_status.thin_pool->out_of_data_space)
|
|
repstr[8] = 'D';
|
|
else if (lvdm->seg_status.thin_pool->read_only)
|
|
repstr[8] = 'M';
|
|
} else if (lvdm->seg_status.type == SEG_STATUS_THIN) {
|
|
if (lvdm->seg_status.thin->fail)
|
|
repstr[8] = 'F';
|
|
} else if (lvdm->seg_status.type == SEG_STATUS_UNKNOWN)
|
|
repstr[8] = 'X'; /* Unknown */
|
|
|
|
if (lv->status & LV_ACTIVATION_SKIP)
|
|
repstr[9] = 'k';
|
|
else
|
|
repstr[9] = '-';
|
|
|
|
out:
|
|
return repstr;
|
|
}
|
|
|
|
/* backward compatible internal API for lvm2api, TODO improve it */
|
|
char *lv_attr_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
char *ret = NULL;
|
|
struct lv_with_info_and_seg_status status = {
|
|
.seg_status.type = SEG_STATUS_NONE,
|
|
};
|
|
|
|
if (!(status.seg_status.mem = dm_pool_create("reporter_pool", 1024)))
|
|
return_0;
|
|
|
|
if (!(status.info_ok = lv_info_with_seg_status(lv->vg->cmd, first_seg(lv), &status, 1, 1)))
|
|
goto_bad;
|
|
|
|
ret = lv_attr_dup_with_info_and_seg_status(mem, &status);
|
|
bad:
|
|
dm_pool_destroy(status.seg_status.mem);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int lv_set_creation(struct logical_volume *lv,
|
|
const char *hostname, uint64_t timestamp)
|
|
{
|
|
const char *hn;
|
|
|
|
if (!hostname) {
|
|
if (!_utsinit) {
|
|
if (uname(&_utsname)) {
|
|
log_error("uname failed: %s", strerror(errno));
|
|
memset(&_utsname, 0, sizeof(_utsname));
|
|
}
|
|
|
|
_utsinit = 1;
|
|
}
|
|
|
|
hostname = _utsname.nodename;
|
|
}
|
|
|
|
if (!(hn = dm_hash_lookup(lv->vg->hostnames, hostname))) {
|
|
if (!(hn = dm_pool_strdup(lv->vg->vgmem, hostname))) {
|
|
log_error("Failed to duplicate hostname");
|
|
return 0;
|
|
}
|
|
|
|
if (!dm_hash_insert(lv->vg->hostnames, hostname, (void*)hn))
|
|
return_0;
|
|
}
|
|
|
|
lv->hostname = hn;
|
|
lv->timestamp = timestamp ? : (uint64_t) time(NULL);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static char *_time_dup(struct cmd_context *cmd, struct dm_pool *mem,
|
|
time_t ts, int iso_mode)
|
|
{
|
|
char buffer[4096];
|
|
struct tm *local_tm;
|
|
const char *format = iso_mode ? DEFAULT_TIME_FORMAT
|
|
: cmd->time_format;
|
|
|
|
if (!ts ||
|
|
!(local_tm = localtime(&ts)) ||
|
|
!strftime(buffer, sizeof(buffer), format, local_tm))
|
|
buffer[0] = 0;
|
|
|
|
return dm_pool_strdup(mem, buffer);
|
|
}
|
|
|
|
char *lv_creation_time_dup(struct dm_pool *mem, const struct logical_volume *lv, int iso_mode)
|
|
{
|
|
time_t ts = lv_is_historical(lv) ? (time_t) lv->this_glv->historical->timestamp
|
|
: (time_t) lv->timestamp;
|
|
|
|
return _time_dup(lv->vg->cmd, mem, ts, iso_mode);
|
|
}
|
|
|
|
char *lv_removal_time_dup(struct dm_pool *mem, const struct logical_volume *lv, int iso_mode)
|
|
{
|
|
time_t ts = lv_is_historical(lv) ? (time_t)lv->this_glv->historical->timestamp_removed
|
|
: (time_t)0;
|
|
|
|
return _time_dup(lv->vg->cmd, mem, ts, iso_mode);
|
|
}
|
|
|
|
char *lv_host_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
return dm_pool_strdup(mem, lv->hostname ? : "");
|
|
}
|
|
|
|
static int _lv_is_exclusive(struct logical_volume *lv)
|
|
{
|
|
struct lv_segment *seg;
|
|
|
|
/* Some seg types require exclusive activation */
|
|
/* FIXME Scan recursively */
|
|
dm_list_iterate_items(seg, &lv->segments)
|
|
if (seg_only_exclusive(seg))
|
|
return 1;
|
|
|
|
/* Origin has no seg type require exlusiveness */
|
|
return lv_is_origin(lv);
|
|
}
|
|
|
|
int lv_active_change(struct cmd_context *cmd, struct logical_volume *lv,
|
|
enum activation_change activate, int needs_exclusive)
|
|
{
|
|
const char *ay_with_mode = NULL;
|
|
struct lv_segment *seg = first_seg(lv);
|
|
|
|
if (activate == CHANGE_ASY)
|
|
ay_with_mode = "sh";
|
|
if (activate == CHANGE_AEY)
|
|
ay_with_mode = "ex";
|
|
|
|
if (is_change_activating(activate) &&
|
|
!lockd_lv(cmd, lv, ay_with_mode, LDLV_PERSISTENT)) {
|
|
log_error("Failed to lock logical volume %s.", display_lvname(lv));
|
|
return 0;
|
|
}
|
|
|
|
switch (activate) {
|
|
case CHANGE_AN:
|
|
deactivate:
|
|
log_verbose("Deactivating logical volume %s.", display_lvname(lv));
|
|
if (!deactivate_lv(cmd, lv))
|
|
return_0;
|
|
break;
|
|
case CHANGE_ALN:
|
|
if (vg_is_clustered(lv->vg) && (needs_exclusive || _lv_is_exclusive(lv))) {
|
|
if (!lv_is_active_locally(lv)) {
|
|
log_error("Cannot deactivate remotely exclusive device %s locally.",
|
|
display_lvname(lv));
|
|
return 0;
|
|
}
|
|
/* Unlock whole exclusive activation */
|
|
goto deactivate;
|
|
}
|
|
log_verbose("Deactivating logical volume %s locally.",
|
|
display_lvname(lv));
|
|
if (!deactivate_lv_local(cmd, lv))
|
|
return_0;
|
|
break;
|
|
case CHANGE_ALY:
|
|
case CHANGE_AAY:
|
|
if (!raid4_is_supported(cmd, seg->segtype))
|
|
goto no_raid4;
|
|
|
|
if (needs_exclusive || _lv_is_exclusive(lv)) {
|
|
log_verbose("Activating logical volume %s exclusively locally.",
|
|
display_lvname(lv));
|
|
if (!activate_lv_excl_local(cmd, lv))
|
|
return_0;
|
|
} else {
|
|
log_verbose("Activating logical volume %s locally.",
|
|
display_lvname(lv));
|
|
if (!activate_lv_local(cmd, lv))
|
|
return_0;
|
|
}
|
|
break;
|
|
case CHANGE_AEY:
|
|
exclusive:
|
|
if (!raid4_is_supported(cmd, seg->segtype))
|
|
goto no_raid4;
|
|
|
|
log_verbose("Activating logical volume %s exclusively.",
|
|
display_lvname(lv));
|
|
if (!activate_lv_excl(cmd, lv))
|
|
return_0;
|
|
break;
|
|
case CHANGE_ASY:
|
|
case CHANGE_AY:
|
|
default:
|
|
if (!raid4_is_supported(cmd, seg->segtype))
|
|
goto no_raid4;
|
|
|
|
if (needs_exclusive || _lv_is_exclusive(lv))
|
|
goto exclusive;
|
|
log_verbose("Activating logical volume %s.", display_lvname(lv));
|
|
if (!activate_lv(cmd, lv))
|
|
return_0;
|
|
}
|
|
|
|
if (!is_change_activating(activate) &&
|
|
!lockd_lv(cmd, lv, "un", LDLV_PERSISTENT))
|
|
log_error("Failed to unlock logical volume %s.", display_lvname(lv));
|
|
|
|
return 1;
|
|
|
|
no_raid4:
|
|
log_error("Failed to activate %s LV %s", lvseg_name(seg), display_lvname(lv));
|
|
return 0;
|
|
}
|
|
|
|
char *lv_active_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
const char *s;
|
|
|
|
if (!activation()) {
|
|
s = "unknown";
|
|
goto out;
|
|
}
|
|
|
|
if (vg_is_clustered(lv->vg)) {
|
|
//const struct logical_volume *lvo = lv;
|
|
lv = lv_lock_holder(lv);
|
|
//log_debug("Holder for %s => %s.", lvo->name, lv->name);
|
|
}
|
|
|
|
if (!lv_is_active(lv))
|
|
s = ""; /* not active */
|
|
else if (!vg_is_clustered(lv->vg))
|
|
s = "active";
|
|
else if (lv_is_active_exclusive(lv))
|
|
/* exclusive cluster activation */
|
|
s = lv_is_active_exclusive_locally(lv) ?
|
|
"local exclusive" : "remote exclusive";
|
|
else /* locally active */
|
|
s = lv_is_active_but_not_locally(lv) ?
|
|
"remotely" : "locally";
|
|
out:
|
|
return dm_pool_strdup(mem, s);
|
|
}
|
|
|
|
char *lv_profile_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
const char *profile_name = lv->profile ? lv->profile->name : "";
|
|
return dm_pool_strdup(mem, profile_name);
|
|
}
|
|
|
|
char *lv_lock_args_dup(struct dm_pool *mem, const struct logical_volume *lv)
|
|
{
|
|
const char *lock_args = lv->lock_args ? lv->lock_args : "";
|
|
return dm_pool_strdup(mem, lock_args);
|
|
}
|
|
|
|
/* For given LV find recursively the LV which holds lock for it */
|
|
const struct logical_volume *lv_lock_holder(const struct logical_volume *lv)
|
|
{
|
|
const struct seg_list *sl;
|
|
|
|
if (lv_is_cow(lv))
|
|
return lv_lock_holder(origin_from_cow(lv));
|
|
|
|
if (lv_is_thin_pool(lv) ||
|
|
lv_is_external_origin(lv)) {
|
|
/* FIXME: Ensure cluster keeps thin-pool active exlusively.
|
|
* External origin can be activated on more nodes (depends on type).
|
|
*/
|
|
if (!lv_is_active(lv))
|
|
/* Find any active LV from the pool or external origin */
|
|
dm_list_iterate_items(sl, &lv->segs_using_this_lv)
|
|
if (lv_is_active(sl->seg->lv)) {
|
|
log_debug_activation("Thin volume %s is active.",
|
|
display_lvname(lv));
|
|
return sl->seg->lv;
|
|
}
|
|
return lv;
|
|
}
|
|
|
|
/* RAID changes visibility of splitted LVs but references them still as leg/meta */
|
|
if ((lv_is_raid_image(lv) || lv_is_raid_metadata(lv)) && lv_is_visible(lv))
|
|
return lv;
|
|
|
|
/* For other types, by default look for the first user */
|
|
dm_list_iterate_items(sl, &lv->segs_using_this_lv) {
|
|
/* FIXME: complete this exception list */
|
|
if (lv_is_thin_volume(lv) &&
|
|
lv_is_thin_volume(sl->seg->lv) &&
|
|
first_seg(lv)->pool_lv == sl->seg->pool_lv)
|
|
continue; /* Skip thin snaphost */
|
|
if (lv_is_pending_delete(sl->seg->lv))
|
|
continue; /* Skip deleted LVs */
|
|
return lv_lock_holder(sl->seg->lv);
|
|
}
|
|
|
|
return lv;
|
|
}
|
|
|
|
struct profile *lv_config_profile(const struct logical_volume *lv)
|
|
{
|
|
return lv->profile ? : lv->vg->profile;
|
|
}
|
|
|
|
int lv_has_constant_stripes(struct logical_volume *lv)
|
|
{
|
|
uint32_t previous_area_count = 0;
|
|
struct lv_segment *seg;
|
|
|
|
dm_list_iterate_items(seg, &lv->segments) {
|
|
if (!seg_is_striped(seg))
|
|
return 0;
|
|
if (previous_area_count && previous_area_count != seg->area_count)
|
|
return 0;
|
|
previous_area_count = seg->area_count;
|
|
}
|
|
|
|
return 1;
|
|
}
|