mirror of
git://sourceware.org/git/lvm2.git
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c609dedc2f
An OS installer can create system.devices for the system and disks, but an OS image cannot create the system-specific system.devices. The OS image can instead configure the image so that lvm will create system.devices on first boot. Image preparation steps to enable auto creation of system.devices: - create empty file /etc/lvm/devices/auto-import-rootvg - remove any existing /etc/lvm/devices/system.devices - enable lvm-devices-import.path - enable lvm-devices-import.service On first boot of the prepared image: - udev triggers vgchange -aay --autoactivation event <rootvg> - vgchange activates LVs in the root VG - vgchange finds the file /etc/lvm/devices/auto-import-rootvg, and no /etc/lvm/devices/system.devices, so it creates /run/lvm/lvm-devices-import - lvm-devices-import.path is run when /run/lvm/lvm-devices-import appears, and triggers lvm-devices-import.service - lvm-devices-import.service runs vgimportdevices --rootvg --auto - vgimportdevices finds /etc/lvm/devices/auto-import-rootvg, and no system.devices, so it creates system.devices containing PVs in the root VG, and removes /etc/lvm/devices/auto-import-rootvg and /run/lvm/lvm-devices-import Run directly, vgimportdevices --rootvg (without --auto), will create a new system.devices for the root VG, or will add devices for the root VG to an existing system.devices.
1600 lines
44 KiB
C
1600 lines
44 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2013 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 "tools.h"
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#include "lib/device/device_id.h"
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#include "lib/label/hints.h"
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#include "device_mapper/misc/dm-ioctl.h"
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#include <mntent.h>
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struct vgchange_params {
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int lock_start_count;
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unsigned int lock_start_sanlock : 1;
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unsigned int vg_complete_to_activate : 1;
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char *root_dm_uuid; /* dm uuid of LV under root fs */
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};
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/*
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* Increments *count by the number of _new_ monitored devices.
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*/
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static int _monitor_lvs_in_vg(struct cmd_context *cmd,
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struct volume_group *vg, int reg, int *count)
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{
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struct lv_list *lvl;
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struct logical_volume *lv;
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int r = 1;
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dm_list_iterate_items(lvl, &vg->lvs) {
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lv = lvl->lv;
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if (!lv_info(cmd, lv, lv_is_thin_pool(lv) ? 1 : 0,
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NULL, 0, 0))
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continue;
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/*
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* FIXME: Need to consider all cases... PVMOVE, etc
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*/
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if (lv_is_pvmove(lv))
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continue;
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if (!monitor_dev_for_events(cmd, lv, 0, reg)) {
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r = 0;
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continue;
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}
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(*count)++;
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}
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return r;
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}
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static int _poll_lvs_in_vg(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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struct lv_list *lvl;
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struct logical_volume *lv;
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int count = 0;
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dm_list_iterate_items(lvl, &vg->lvs) {
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lv = lvl->lv;
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if (lv_is_active(lv) &&
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(lv_is_pvmove(lv) || lv_is_converting(lv) || lv_is_merging(lv))) {
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lv_spawn_background_polling(cmd, lv);
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count++;
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}
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}
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/*
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* returns the number of polled devices
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* - there is no way to know if lv is already being polled
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*/
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return count;
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}
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static int _activate_lvs_in_vg(struct cmd_context *cmd, struct volume_group *vg,
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activation_change_t activate)
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{
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struct lv_list *lvl;
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struct logical_volume *lv;
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int count = 0, expected_count = 0, r = 1;
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sigint_allow();
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dm_list_iterate_items(lvl, &vg->lvs) {
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if (sigint_caught())
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return_0;
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lv = lvl->lv;
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if (!lv_is_visible(lv) && (!cmd->process_component_lvs || !lv_is_component(lv)))
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continue;
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/* If LV is sparse, activate origin instead */
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if (lv_is_cow(lv) && lv_is_virtual_origin(origin_from_cow(lv)))
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lv = origin_from_cow(lv);
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/* Only request activation of snapshot origin devices */
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if (lv_is_snapshot(lv) || lv_is_cow(lv))
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continue;
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/* Only request activation of mirror LV */
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if (lv_is_mirror_image(lv) || lv_is_mirror_log(lv))
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continue;
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if (lv_is_vdo_pool(lv))
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continue;
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if (lv_activation_skip(lv, activate, arg_is_set(cmd, ignoreactivationskip_ARG)))
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continue;
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if ((activate == CHANGE_AAY) &&
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!lv_passes_auto_activation_filter(cmd, lv))
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continue;
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/* vg NOAUTOACTIVATE flag was already checked */
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if ((activate == CHANGE_AAY) && (lv->status & LV_NOAUTOACTIVATE))
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continue;
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expected_count++;
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if (!lv_change_activate(cmd, lv, activate)) {
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stack;
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r = 0;
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continue;
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}
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count++;
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}
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sigint_restore();
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if (expected_count)
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log_verbose("%sctivated %d logical volumes in volume group %s.",
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is_change_activating(activate) ? "A" : "Dea",
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count, vg->name);
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/*
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* After sucessfull activation we need to initialise polling
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* for all activated LVs in a VG. Possible enhancement would
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* be adding --poll y|n cmdline option for pvscan and call
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* init_background_polling routine in autoactivation handler.
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*/
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if (count && is_change_activating(activate) &&
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!vgchange_background_polling(cmd, vg)) {
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stack;
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r = 0;
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}
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/* Wait until devices are available */
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if (!sync_local_dev_names(vg->cmd)) {
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log_error("Failed to sync local devices for VG %s.", vg->name);
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r = 0;
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}
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return r;
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}
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static int _vgchange_monitoring(struct cmd_context *cmd, struct volume_group *vg)
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{
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int r = 1;
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int monitored = 0;
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if (lvs_in_vg_activated(vg) &&
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dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
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if (!_monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode(), &monitored))
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r = 0;
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log_print_unless_silent("%d logical volume(s) in volume group "
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"\"%s\" %smonitored",
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monitored, vg->name, (dmeventd_monitor_mode()) ? "" : "un");
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}
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return r;
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}
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int vgchange_background_polling(struct cmd_context *cmd, struct volume_group *vg)
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{
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int polled;
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if (background_polling()) {
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log_debug_activation("Starting background polling for volume group \"%s\".", vg->name);
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polled = _poll_lvs_in_vg(cmd, vg);
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if (polled)
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log_print_unless_silent("Background polling started for %d logical volume(s) "
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"in volume group \"%s\"",
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polled, vg->name);
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}
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return 1;
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}
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int vgchange_activate(struct cmd_context *cmd, struct volume_group *vg,
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activation_change_t activate, int vg_complete_to_activate, char *root_dm_uuid)
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{
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int lv_open, active, monitored = 0, r = 1;
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const struct lv_list *lvl;
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struct pv_list *pvl;
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int do_activate = is_change_activating(activate);
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/*
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* We can get here in the odd case where an LV is already active in
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* a foreign VG, which allows the VG to be accessed by vgchange -a
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* so the LV can be deactivated.
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*/
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if (vg->system_id && vg->system_id[0] &&
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cmd->system_id && cmd->system_id[0] &&
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strcmp(vg->system_id, cmd->system_id) &&
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do_activate) {
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log_error("Cannot activate LVs in a foreign VG.");
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return 0;
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}
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if ((activate == CHANGE_AAY) && (vg->status & NOAUTOACTIVATE)) {
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log_debug("Autoactivation is disabled for VG %s.", vg->name);
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return 1;
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}
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if (do_activate && vg_complete_to_activate) {
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dm_list_iterate_items(pvl, &vg->pvs) {
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if (!pvl->pv->dev) {
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log_print("VG %s is incomplete.", vg->name);
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return 1;
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}
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}
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}
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/*
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* Safe, since we never write out new metadata here. Required for
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* partial activation to work.
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*/
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cmd->handles_missing_pvs = 1;
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/* FIXME: Force argument to deactivate them? */
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if (!do_activate) {
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dm_list_iterate_items(lvl, &vg->lvs)
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label_scan_invalidate_lv(cmd, lvl->lv);
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if ((lv_open = lvs_in_vg_opened(vg))) {
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dm_list_iterate_items(lvl, &vg->lvs) {
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if (lv_is_visible(lvl->lv) &&
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!lv_is_vdo_pool(lvl->lv) && // FIXME: API skip flag missing
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!lv_check_not_in_use(lvl->lv, 1)) {
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log_error("Can't deactivate volume group \"%s\" with %d open logical volume(s)",
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vg->name, lv_open);
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return 0;
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}
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}
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}
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}
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/* FIXME Move into library where clvmd can use it */
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if (do_activate)
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check_current_backup(vg);
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else /* Component LVs might be active, support easy deactivation */
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cmd->process_component_lvs = 1;
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if (do_activate && (active = lvs_in_vg_activated(vg))) {
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log_verbose("%d logical volume(s) in volume group \"%s\" "
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"already active", active, vg->name);
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if (dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
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if (!_monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode(), &monitored))
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r = 0;
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log_verbose("%d existing logical volume(s) in volume "
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"group \"%s\" %smonitored",
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monitored, vg->name,
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dmeventd_monitor_mode() ? "" : "un");
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}
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}
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if (!_activate_lvs_in_vg(cmd, vg, activate)) {
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stack;
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r = 0;
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}
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/*
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* Possibly trigger auto-generation of system.devices:
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* - if root_dm_uuid contains vg->id, and
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* - /etc/lvm/devices/auto-import-rootvg exists, and
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* - /etc/lvm/devices/system.devices does not exist, then
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* - create /run/lvm/lvm-devices-import to
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* trigger lvm-devices-import.path and .service
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* - lvm-devices-import will run vgimportdevices --rootvg
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* to create system.devices
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*/
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if (root_dm_uuid) {
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char path[PATH_MAX];
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struct stat info;
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FILE *fp;
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if (memcmp(root_dm_uuid + 4, &vg->id, ID_LEN))
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goto out;
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if (cmd->enable_devices_file || devices_file_exists(cmd))
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goto out;
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if (dm_snprintf(path, sizeof(path), "%s/devices/auto-import-rootvg", cmd->system_dir) < 0)
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goto out;
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if (stat(path, &info) < 0)
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goto out;
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log_debug("Found %s creating %s", path, DEVICES_IMPORT_PATH);
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if (!(fp = fopen(DEVICES_IMPORT_PATH, "w"))) {
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log_debug("failed to create %s", DEVICES_IMPORT_PATH);
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goto out;
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}
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if (fclose(fp))
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stack;
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}
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out:
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/* Print message only if there was not found a missing VG */
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log_print_unless_silent("%d logical volume(s) in volume group \"%s\" now active",
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lvs_in_vg_activated(vg), vg->name);
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return r;
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}
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static int _vgchange_refresh(struct cmd_context *cmd, struct volume_group *vg)
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{
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log_verbose("Refreshing volume group \"%s\"", vg->name);
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if (!vg_refresh_visible(cmd, vg))
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return_0;
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return 1;
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}
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static int _vgchange_alloc(struct cmd_context *cmd, struct volume_group *vg)
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{
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alloc_policy_t alloc;
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alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, ALLOC_NORMAL);
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/* FIXME: make consistent with vg_set_alloc_policy() */
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if (alloc == vg->alloc) {
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log_error("Volume group allocation policy is already %s",
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get_alloc_string(vg->alloc));
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return 0;
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}
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if (!vg_set_alloc_policy(vg, alloc))
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return_0;
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return 1;
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}
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static int _vgchange_resizeable(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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int resizeable = arg_int_value(cmd, resizeable_ARG, 0);
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if (resizeable && vg_is_resizeable(vg)) {
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log_error("Volume group \"%s\" is already resizeable",
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vg->name);
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return 0;
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}
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if (!resizeable && !vg_is_resizeable(vg)) {
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log_error("Volume group \"%s\" is already not resizeable",
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vg->name);
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return 0;
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}
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if (resizeable)
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vg->status |= RESIZEABLE_VG;
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else
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vg->status &= ~RESIZEABLE_VG;
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return 1;
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}
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static int _vgchange_autoactivation(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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int aa_no_arg = !arg_int_value(cmd, setautoactivation_ARG, 0);
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int aa_no_meta = (vg->status & NOAUTOACTIVATE) ? 1 : 0;
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if ((aa_no_arg && aa_no_meta) || (!aa_no_arg && !aa_no_meta)) {
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log_error("Volume group autoactivation is already %s.",
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aa_no_arg ? "no" : "yes");
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return 0;
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}
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if (aa_no_arg)
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vg->status |= NOAUTOACTIVATE;
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else
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vg->status &= ~NOAUTOACTIVATE;
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return 1;
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}
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static int _vgchange_logicalvolume(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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uint32_t max_lv = arg_uint_value(cmd, logicalvolume_ARG, 0);
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if (!vg_set_max_lv(vg, max_lv))
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return_0;
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return 1;
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}
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static int _vgchange_physicalvolumes(struct cmd_context *cmd,
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struct volume_group *vg)
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{
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uint32_t max_pv = arg_uint_value(cmd, maxphysicalvolumes_ARG, 0);
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if (!vg_set_max_pv(vg, max_pv))
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return_0;
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return 1;
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}
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static int _vgchange_pesize(struct cmd_context *cmd, struct volume_group *vg)
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{
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uint32_t extent_size;
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if (arg_uint64_value(cmd, physicalextentsize_ARG, 0) > MAX_EXTENT_SIZE) {
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log_warn("WARNING: Physical extent size cannot be larger than %s.",
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display_size(cmd, (uint64_t) MAX_EXTENT_SIZE));
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return 1;
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}
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extent_size = arg_uint_value(cmd, physicalextentsize_ARG, 0);
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/* FIXME: remove check - redundant with vg_change_pesize */
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if (extent_size == vg->extent_size) {
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log_warn("WARNING: Physical extent size of VG %s is already %s.",
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vg->name, display_size(cmd, (uint64_t) extent_size));
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return 1;
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}
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if (!vg_set_extent_size(vg, extent_size))
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return_0;
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if (!vg_check_pv_dev_block_sizes(vg)) {
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log_error("Failed to change physical extent size for VG %s.",
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vg->name);
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return 0;
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}
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return 1;
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}
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static int _vgchange_addtag(struct cmd_context *cmd, struct volume_group *vg)
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{
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return change_tag(cmd, vg, NULL, NULL, addtag_ARG);
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}
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static int _vgchange_deltag(struct cmd_context *cmd, struct volume_group *vg)
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{
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return change_tag(cmd, vg, NULL, NULL, deltag_ARG);
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}
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static int _vgchange_uuid(struct cmd_context *cmd __attribute__((unused)),
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struct volume_group *vg)
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{
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struct lv_list *lvl;
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struct id old_vg_id;
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if (lvs_in_vg_activated(vg)) {
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log_error("Volume group has active logical volumes.");
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return 0;
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}
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memcpy(&old_vg_id, &vg->id, ID_LEN);
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if (!id_create(&vg->id)) {
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log_error("Failed to generate new random UUID for VG %s.",
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vg->name);
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return 0;
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}
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dm_list_iterate_items(lvl, &vg->lvs) {
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memcpy(&lvl->lv->lvid, &vg->id, sizeof(vg->id));
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}
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/*
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* If any LVs in this VG have PVs stacked on them, then
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* update the device_id of the stacked PV.
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*/
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device_id_update_vg_uuid(cmd, vg, &old_vg_id);
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return 1;
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}
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static int _vgchange_metadata_copies(struct cmd_context *cmd,
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struct volume_group *vg)
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{
|
|
uint32_t mda_copies = arg_uint_value(cmd, vgmetadatacopies_ARG, DEFAULT_VGMETADATACOPIES);
|
|
|
|
log_debug("vgchange_metadata_copies new %u vg_mda_copies %u D %u",
|
|
mda_copies, vg_mda_copies(vg), DEFAULT_VGMETADATACOPIES);
|
|
|
|
if (mda_copies == vg_mda_copies(vg)) {
|
|
if (vg_mda_copies(vg) == VGMETADATACOPIES_UNMANAGED)
|
|
log_warn("WARNING: Number of metadata copies for VG %s is already unmanaged.",
|
|
vg->name);
|
|
else
|
|
log_warn("WARNING: Number of metadata copies for VG %s is already %u.",
|
|
vg->name, mda_copies);
|
|
return 1;
|
|
}
|
|
|
|
if (!vg_set_mda_copies(vg, mda_copies))
|
|
return_0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _vgchange_profile(struct cmd_context *cmd,
|
|
struct volume_group *vg)
|
|
{
|
|
const char *old_profile_name, *new_profile_name;
|
|
struct profile *new_profile;
|
|
|
|
old_profile_name = vg->profile ? vg->profile->name : "(no profile)";
|
|
|
|
if (arg_is_set(cmd, detachprofile_ARG)) {
|
|
new_profile_name = "(no profile)";
|
|
vg->profile = NULL;
|
|
} else {
|
|
if (arg_is_set(cmd, metadataprofile_ARG))
|
|
new_profile_name = arg_str_value(cmd, metadataprofile_ARG, NULL);
|
|
else
|
|
new_profile_name = arg_str_value(cmd, profile_ARG, NULL);
|
|
if (!(new_profile = add_profile(cmd, new_profile_name, CONFIG_PROFILE_METADATA)))
|
|
return_0;
|
|
vg->profile = new_profile;
|
|
}
|
|
|
|
log_verbose("Changing configuration profile for VG %s: %s -> %s.",
|
|
vg->name, old_profile_name, new_profile_name);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* This function will not be called unless the local host is allowed to use the
|
|
* VG. Either the VG has no system_id, or the VG and host have matching
|
|
* system_ids, or the host has the VG's current system_id in its
|
|
* extra_system_ids list. This function is not allowed to change the system_id
|
|
* of a foreign VG (VG owned by another host).
|
|
*/
|
|
static int _vgchange_system_id(struct cmd_context *cmd, struct volume_group *vg)
|
|
{
|
|
const char *system_id;
|
|
const char *system_id_arg_str = arg_str_value(cmd, systemid_ARG, NULL);
|
|
|
|
if (!(system_id = system_id_from_string(cmd, system_id_arg_str))) {
|
|
log_error("Unable to set system ID.");
|
|
return 0;
|
|
}
|
|
|
|
if (!strcmp(vg->system_id, system_id)) {
|
|
log_error("Volume Group system ID is already \"%s\".", vg->system_id);
|
|
return 0;
|
|
}
|
|
|
|
if (!*system_id && cmd->system_id && strcmp(system_id, cmd->system_id)) {
|
|
log_warn("WARNING: Removing the system ID allows unsafe access from other hosts.");
|
|
|
|
if (!arg_is_set(cmd, yes_ARG) &&
|
|
yes_no_prompt("Remove system ID %s from volume group %s? [y/n]: ",
|
|
vg->system_id, vg->name) == 'n') {
|
|
log_error("System ID of volume group %s not changed.", vg->name);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (*system_id && (!cmd->system_id || strcmp(system_id, cmd->system_id))) {
|
|
if (lvs_in_vg_activated(vg)) {
|
|
log_error("Logical Volumes in VG %s must be deactivated before system ID can be changed.",
|
|
vg->name);
|
|
return 0;
|
|
}
|
|
|
|
if (cmd->system_id)
|
|
log_warn("WARNING: Requested system ID %s does not match local system ID %s.",
|
|
system_id, cmd->system_id ? : "");
|
|
else
|
|
log_warn("WARNING: No local system ID is set.");
|
|
log_warn("WARNING: Volume group %s might become inaccessible from this machine.",
|
|
vg->name);
|
|
|
|
if (!arg_is_set(cmd, yes_ARG) &&
|
|
yes_no_prompt("Set foreign system ID %s on volume group %s? [y/n]: ",
|
|
system_id, vg->name) == 'n') {
|
|
log_error("Volume group %s system ID not changed.", vg->name);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
log_verbose("Changing system ID for VG %s from \"%s\" to \"%s\".",
|
|
vg->name, vg->system_id, system_id);
|
|
|
|
vg->system_id = system_id;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _passes_lock_start_filter(struct cmd_context *cmd,
|
|
struct volume_group *vg,
|
|
const int cfg_id)
|
|
{
|
|
const struct dm_config_node *cn;
|
|
const struct dm_config_value *cv;
|
|
const char *str;
|
|
|
|
/* undefined list means no restrictions, all vg names pass */
|
|
|
|
cn = find_config_tree_array(cmd, cfg_id, NULL);
|
|
if (!cn)
|
|
return 1;
|
|
|
|
/* with a defined list, the vg name must be included to pass */
|
|
|
|
for (cv = cn->v; cv; cv = cv->next) {
|
|
if (cv->type == DM_CFG_EMPTY_ARRAY)
|
|
break;
|
|
if (cv->type != DM_CFG_STRING) {
|
|
log_error("Ignoring invalid string in lock_start list.");
|
|
continue;
|
|
}
|
|
str = cv->v.str;
|
|
if (!*str) {
|
|
log_error("Ignoring empty string in config file.");
|
|
continue;
|
|
}
|
|
|
|
/* ignoring tags for now */
|
|
|
|
if (!strcmp(str, vg->name))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _vgchange_lock_start(struct cmd_context *cmd, struct volume_group *vg,
|
|
struct vgchange_params *vp)
|
|
{
|
|
const char *start_opt = arg_str_value(cmd, lockopt_ARG, NULL);
|
|
int auto_opt = 0;
|
|
int exists = 0;
|
|
int r;
|
|
|
|
if (!vg_is_shared(vg))
|
|
return 1;
|
|
|
|
if (arg_is_set(cmd, force_ARG))
|
|
goto do_start;
|
|
|
|
/*
|
|
* Recognize both "auto" and "autonowait" options.
|
|
* Any waiting is done at the end of vgchange.
|
|
*/
|
|
if (start_opt && !strncmp(start_opt, "auto", 4))
|
|
auto_opt = 1;
|
|
|
|
if (!_passes_lock_start_filter(cmd, vg, activation_lock_start_list_CFG)) {
|
|
log_verbose("Not starting %s since it does not pass lock_start_list", vg->name);
|
|
return 1;
|
|
}
|
|
|
|
if (auto_opt && !_passes_lock_start_filter(cmd, vg, activation_auto_lock_start_list_CFG)) {
|
|
log_verbose("Not starting %s since it does not pass auto_lock_start_list", vg->name);
|
|
return 1;
|
|
}
|
|
|
|
do_start:
|
|
r = lockd_start_vg(cmd, vg, 0, &exists);
|
|
|
|
if (r)
|
|
vp->lock_start_count++;
|
|
else if (exists)
|
|
vp->lock_start_count++;
|
|
if (!strcmp(vg->lock_type, "sanlock"))
|
|
vp->lock_start_sanlock = 1;
|
|
|
|
return r;
|
|
}
|
|
|
|
static int _vgchange_lock_stop(struct cmd_context *cmd, struct volume_group *vg)
|
|
{
|
|
return lockd_stop_vg(cmd, vg);
|
|
}
|
|
|
|
static int _vgchange_single(struct cmd_context *cmd, const char *vg_name,
|
|
struct volume_group *vg,
|
|
struct processing_handle *handle)
|
|
{
|
|
struct vgchange_params *vp = (struct vgchange_params *)handle->custom_handle;
|
|
int ret = ECMD_PROCESSED;
|
|
unsigned i;
|
|
activation_change_t activate;
|
|
int changed = 0;
|
|
|
|
static const struct {
|
|
int arg;
|
|
int (*fn)(struct cmd_context *cmd, struct volume_group *vg);
|
|
} _vgchange_args[] = {
|
|
{ logicalvolume_ARG, &_vgchange_logicalvolume },
|
|
{ maxphysicalvolumes_ARG, &_vgchange_physicalvolumes },
|
|
{ resizeable_ARG, &_vgchange_resizeable },
|
|
{ setautoactivation_ARG, &_vgchange_autoactivation },
|
|
{ deltag_ARG, &_vgchange_deltag },
|
|
{ addtag_ARG, &_vgchange_addtag },
|
|
{ physicalextentsize_ARG, &_vgchange_pesize },
|
|
{ uuid_ARG, &_vgchange_uuid },
|
|
{ alloc_ARG, &_vgchange_alloc },
|
|
{ vgmetadatacopies_ARG, &_vgchange_metadata_copies },
|
|
{ metadataprofile_ARG, &_vgchange_profile },
|
|
{ profile_ARG, &_vgchange_profile },
|
|
{ detachprofile_ARG, &_vgchange_profile },
|
|
};
|
|
|
|
/*
|
|
* FIXME: DEFAULT_BACKGROUND_POLLING should be "unspecified".
|
|
* If --poll is explicitly provided use it; otherwise polling
|
|
* should only be started if the LV is not already active. So:
|
|
* 1) change the activation code to say if the LV was actually activated
|
|
* 2) make polling of an LV tightly coupled with LV activation
|
|
*
|
|
* Do not initiate any polling if --sysinit option is used.
|
|
*/
|
|
init_background_polling(arg_is_set(cmd, sysinit_ARG) ? 0 :
|
|
arg_int_value(cmd, poll_ARG,
|
|
DEFAULT_BACKGROUND_POLLING));
|
|
|
|
for (i = 0; i < DM_ARRAY_SIZE(_vgchange_args); ++i) {
|
|
if (arg_is_set(cmd, _vgchange_args[i].arg)) {
|
|
if (!_vgchange_args[i].fn(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
changed = 1;
|
|
}
|
|
}
|
|
|
|
if (changed) {
|
|
if (!vg_write(vg) || !vg_commit(vg))
|
|
return_ECMD_FAILED;
|
|
|
|
log_print_unless_silent("Volume group \"%s\" successfully changed.", vg->name);
|
|
}
|
|
|
|
if (arg_is_set(cmd, activate_ARG)) {
|
|
activate = (activation_change_t) arg_uint_value(cmd, activate_ARG, 0);
|
|
if (!vgchange_activate(cmd, vg, activate, vp->vg_complete_to_activate, vp->root_dm_uuid))
|
|
return_ECMD_FAILED;
|
|
} else if (arg_is_set(cmd, refresh_ARG)) {
|
|
/* refreshes the visible LVs (which starts polling) */
|
|
if (!_vgchange_refresh(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
} else {
|
|
/* -ay* will have already done monitoring changes */
|
|
if (arg_is_set(cmd, monitor_ARG) &&
|
|
!_vgchange_monitoring(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
|
|
/* When explicitelly specified --poll */
|
|
if (arg_is_set(cmd, poll_ARG) &&
|
|
!vgchange_background_polling(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Automatic creation of system.devices for root VG on first boot
|
|
* is useful for OS images where the OS installer is not used to
|
|
* customize the OS for system.
|
|
*
|
|
* - OS image prep:
|
|
* . rm /etc/lvm/devices/system.devices (if it exists)
|
|
* . touch /etc/lvm/devices/auto-import-rootvg
|
|
* . enable lvm-devices-import.path
|
|
* . enable lvm-devices-import.service
|
|
*
|
|
* - lvchange -ay <rootvg>/<rootlv>
|
|
* . run by initrd so root fs can be mounted
|
|
* . does not use system.devices
|
|
* . named <rootvg>/<rootlv> comes from kernel command line rd.lvm
|
|
* . uses first device that appears containing the named root LV
|
|
*
|
|
* - vgchange -aay <rootvg>
|
|
* . triggered by udev when all PVs from root VG are online
|
|
* . activate LVs in root VG (in addition to the already active root LV)
|
|
* . check for /etc/lvm/devices/auto-import-rootvg (found)
|
|
* . check for /etc/lvm/devices/system.devices (not found)
|
|
* . create /run/lvm/lvm-devices-import because
|
|
* auto-import-rootvg was found and system.devices was not found
|
|
*
|
|
* - lvm-devices-import.path
|
|
* . triggered by /run/lvm/lvm-devices-import
|
|
* . start lvm-devices-import.service
|
|
*
|
|
* - lvm-devices-import.service
|
|
* . check for /etc/lvm/devices/system.devices, do nothing if found
|
|
* . run vgimportdevices --rootvg --auto
|
|
*
|
|
* - vgimportdevices --rootvg --auto
|
|
* . check for /etc/lvm/devices/auto-import-rootvg (found)
|
|
* . check for /etc/lvm/devices/system.devices (not found)
|
|
* . creates /etc/lvm/devices/system.devices for PVs in root VG
|
|
* . removes /etc/lvm/devices/auto-import-rootvg
|
|
* . removes /run/lvm/lvm-devices-import
|
|
*
|
|
* On future startup, /etc/lvm/devices/system.devices will exist,
|
|
* and /etc/lvm/devices/auto-import-rootvg will not exist, so
|
|
* vgchange -aay <rootvg> will not create /run/lvm/lvm-devices-import,
|
|
* and lvm-devices-import.path and lvm-device-import.service will not run.
|
|
*
|
|
* lvm-devices-import.path:
|
|
* [Path]
|
|
* PathExists=/run/lvm/lvm-devices-import
|
|
* Unit=lvm-devices-import.service
|
|
* ConditionPathExists=!/etc/lvm/devices/system.devices
|
|
*
|
|
* lvm-devices-import.service:
|
|
* [Service]
|
|
* Type=oneshot
|
|
* RemainAfterExit=no
|
|
* ExecStart=/usr/sbin/vgimportdevices --rootvg --auto
|
|
* ConditionPathExists=!/etc/lvm/devices/system.devices
|
|
*/
|
|
|
|
static void _get_rootvg_dev(struct cmd_context *cmd, char **dm_uuid_out)
|
|
{
|
|
char path[PATH_MAX];
|
|
char dm_uuid[DM_UUID_LEN];
|
|
struct stat info;
|
|
FILE *fme = NULL;
|
|
struct mntent *me;
|
|
int found = 0;
|
|
|
|
if (cmd->enable_devices_file || devices_file_exists(cmd))
|
|
return;
|
|
|
|
if (dm_snprintf(path, sizeof(path), "%s/devices/auto-import-rootvg", cmd->system_dir) < 0)
|
|
return;
|
|
|
|
if (stat(path, &info) < 0)
|
|
return;
|
|
|
|
if (!(fme = setmntent("/etc/mtab", "r")))
|
|
return;
|
|
|
|
while ((me = getmntent(fme))) {
|
|
if ((me->mnt_dir[0] == '/') && (me->mnt_dir[1] == '\0')) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
endmntent(fme);
|
|
|
|
if (!found)
|
|
return;
|
|
|
|
if (stat(me->mnt_dir, &info) < 0)
|
|
return;
|
|
|
|
if (!get_dm_uuid_from_sysfs(dm_uuid, sizeof(dm_uuid), (int)MAJOR(info.st_dev), (int)MINOR(info.st_dev)))
|
|
return;
|
|
|
|
log_debug("Found root dm_uuid %s", dm_uuid);
|
|
|
|
/* UUID_PREFIX = "LVM-" */
|
|
if (strncmp(dm_uuid, UUID_PREFIX, 4))
|
|
return;
|
|
|
|
if (strlen(dm_uuid) < 4 + ID_LEN)
|
|
return;
|
|
|
|
*dm_uuid_out = dm_pool_strdup(cmd->mem, dm_uuid);
|
|
}
|
|
|
|
static int _vgchange_autoactivation_setup(struct cmd_context *cmd,
|
|
struct vgchange_params *vp,
|
|
int *skip_command,
|
|
const char **vgname_ret,
|
|
uint32_t *flags)
|
|
{
|
|
const char *aa;
|
|
char *vgname = NULL;
|
|
int vg_locked = 0;
|
|
int found_none = 0, found_all = 0, found_incomplete = 0;
|
|
|
|
if (!(aa = arg_str_value(cmd, autoactivation_ARG, NULL)))
|
|
return_0;
|
|
|
|
if (strcmp(aa, "event")) {
|
|
log_print("Skip vgchange for unknown autoactivation value.");
|
|
*skip_command = 1;
|
|
return 1;
|
|
}
|
|
|
|
if (!find_config_tree_bool(cmd, global_event_activation_CFG, NULL)) {
|
|
log_print("Skip vgchange for event and event_activation=0.");
|
|
*skip_command = 1;
|
|
return 1;
|
|
}
|
|
|
|
vp->vg_complete_to_activate = 1;
|
|
cmd->use_hints = 0;
|
|
|
|
/*
|
|
* Add an option to skip the pvs_online optimization? e.g.
|
|
* "online_skip" in --autoactivation / auto_activation_settings
|
|
*
|
|
* if (online_skip)
|
|
* return 1;
|
|
*/
|
|
|
|
/* reads devices file, does not populate dev-cache */
|
|
if (!setup_devices_for_online_autoactivation(cmd))
|
|
return_0;
|
|
|
|
get_single_vgname_cmd_arg(cmd, NULL, &vgname);
|
|
|
|
_get_rootvg_dev(cmd, &vp->root_dm_uuid);
|
|
|
|
/*
|
|
* Lock the VG before scanning the PVs so _vg_read can avoid the normal
|
|
* lock_vol+rescan (READ_WITHOUT_LOCK avoids the normal lock_vol and
|
|
* can_use_one_scan avoids the normal rescan.) If this early lock_vol
|
|
* fails, continue and use the normal lock_vol in _vg_read.
|
|
*/
|
|
if (vgname) {
|
|
if (!lock_vol(cmd, vgname, LCK_VG_WRITE, NULL)) {
|
|
log_debug("Failed early VG locking for autoactivation.");
|
|
} else {
|
|
*flags |= READ_WITHOUT_LOCK;
|
|
cmd->can_use_one_scan = 1;
|
|
vg_locked = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Perform label_scan on PVs that are online (per /run/lvm files)
|
|
* for the given VG (or when no VG name is given, all online PVs.)
|
|
* If this fails, the caller will do a normal process_each_vg without
|
|
* optimizations (which will do a full label_scan.)
|
|
*/
|
|
if (!label_scan_vg_online(cmd, vgname, &found_none, &found_all, &found_incomplete)) {
|
|
log_print("PVs online error%s%s, using all devices.", vgname ? " for VG " : "", vgname ?: "");
|
|
goto bad;
|
|
}
|
|
|
|
/*
|
|
* Not the expected usage, activate any VGs that are complete based on
|
|
* pvs_online. Only online pvs are used.
|
|
*/
|
|
if (!vgname) {
|
|
*flags |= PROCESS_SKIP_SCAN;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* The expected and optimal usage, which is the purpose of
|
|
* this function. We expect online files to be found for
|
|
* all PVs because the udev rule calls
|
|
* vgchange -aay --autoactivation event <vgname>
|
|
* only after all PVs for vgname are found online.
|
|
*/
|
|
if (found_all) {
|
|
*flags |= PROCESS_SKIP_SCAN;
|
|
*vgname_ret = vgname;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Not expected usage, no online pvs for the vgname were found. The
|
|
* caller will fall back to process_each doing a full label_scan to
|
|
* look for the VG. (No optimization used.)
|
|
*/
|
|
if (found_none) {
|
|
log_print("PVs online not found for VG %s, using all devices.", vgname);
|
|
goto bad;
|
|
}
|
|
|
|
/*
|
|
* Not expected usage, only some online pvs for the vgname were found.
|
|
* The caller will fall back to process_each doing a full label_scan to
|
|
* look for all PVs in the VG. (No optimization used.)
|
|
*/
|
|
if (found_incomplete) {
|
|
log_print("PVs online incomplete for VG %s, using all devicess.", vgname);
|
|
goto bad;
|
|
}
|
|
|
|
/*
|
|
* Shouldn't happen, the caller will fall back to standard
|
|
* process_each. (No optimization used.)
|
|
*/
|
|
log_print("PVs online unknown for VG %s, using all devices.", vgname);
|
|
|
|
bad:
|
|
/*
|
|
* The online scanning optimization didn't work, so undo the vg
|
|
* locking optimization before falling back to normal processing.
|
|
*/
|
|
if (vg_locked) {
|
|
unlock_vg(cmd, NULL, vgname);
|
|
*flags &= ~READ_WITHOUT_LOCK;
|
|
cmd->can_use_one_scan = 0;
|
|
}
|
|
|
|
free(vgname);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
int vgchange(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
struct vgchange_params vp = { 0 };
|
|
struct processing_handle *handle;
|
|
const char *vgname = NULL;
|
|
uint32_t flags = 0;
|
|
int ret;
|
|
|
|
int noupdate =
|
|
arg_is_set(cmd, activate_ARG) ||
|
|
arg_is_set(cmd, monitor_ARG) ||
|
|
arg_is_set(cmd, poll_ARG) ||
|
|
arg_is_set(cmd, refresh_ARG);
|
|
|
|
int update_partial_safe =
|
|
arg_is_set(cmd, deltag_ARG) ||
|
|
arg_is_set(cmd, addtag_ARG) ||
|
|
arg_is_set(cmd, metadataprofile_ARG) ||
|
|
arg_is_set(cmd, profile_ARG) ||
|
|
arg_is_set(cmd, detachprofile_ARG);
|
|
|
|
int update_partial_unsafe =
|
|
arg_is_set(cmd, logicalvolume_ARG) ||
|
|
arg_is_set(cmd, maxphysicalvolumes_ARG) ||
|
|
arg_is_set(cmd, resizeable_ARG) ||
|
|
arg_is_set(cmd, setautoactivation_ARG) ||
|
|
arg_is_set(cmd, uuid_ARG) ||
|
|
arg_is_set(cmd, physicalextentsize_ARG) ||
|
|
arg_is_set(cmd, alloc_ARG) ||
|
|
arg_is_set(cmd, vgmetadatacopies_ARG);
|
|
|
|
int update = update_partial_safe || update_partial_unsafe;
|
|
|
|
if (!update && !noupdate) {
|
|
log_error("Need one or more command options.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if ((arg_is_set(cmd, profile_ARG) || arg_is_set(cmd, metadataprofile_ARG)) &&
|
|
arg_is_set(cmd, detachprofile_ARG)) {
|
|
log_error("Only one of --metadataprofile and --detachprofile permitted.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_is_set(cmd, activate_ARG) && arg_is_set(cmd, refresh_ARG)) {
|
|
log_error("Only one of -a and --refresh permitted.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if ((arg_is_set(cmd, ignorelockingfailure_ARG) ||
|
|
arg_is_set(cmd, sysinit_ARG)) && update) {
|
|
log_error("Only -a permitted with --ignorelockingfailure and --sysinit.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_is_set(cmd, activate_ARG) &&
|
|
(arg_is_set(cmd, monitor_ARG) || arg_is_set(cmd, poll_ARG))) {
|
|
if (!is_change_activating((activation_change_t) arg_uint_value(cmd, activate_ARG, 0))) {
|
|
log_error("Only -ay* allowed with --monitor or --poll.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
}
|
|
|
|
if (arg_is_set(cmd, poll_ARG) && arg_is_set(cmd, sysinit_ARG)) {
|
|
log_error("Only one of --poll and --sysinit permitted.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_is_set(cmd, maxphysicalvolumes_ARG) &&
|
|
arg_sign_value(cmd, maxphysicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) {
|
|
log_error("MaxPhysicalVolumes may not be negative.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_is_set(cmd, physicalextentsize_ARG) &&
|
|
arg_sign_value(cmd, physicalextentsize_ARG, SIGN_NONE) == SIGN_MINUS) {
|
|
log_error("Physical extent size may not be negative.");
|
|
return EINVALID_CMD_LINE;
|
|
}
|
|
|
|
if (arg_is_set(cmd, clustered_ARG) && !argc && !arg_is_set(cmd, yes_ARG) &&
|
|
(yes_no_prompt("Change clustered property of all volumes groups? [y/n]: ") == 'n')) {
|
|
log_error("No volume groups changed.");
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (!update || !update_partial_unsafe)
|
|
cmd->handles_missing_pvs = 1;
|
|
|
|
if (noupdate)
|
|
cmd->ignore_device_name_mismatch = 1;
|
|
|
|
/*
|
|
* If the devices file includes PVs stacked on LVs, then
|
|
* vgchange --uuid may need to update the devices file.
|
|
* No PV-on-LV stacked is done without scan_lvs set.
|
|
*/
|
|
if (arg_is_set(cmd, uuid_ARG) && cmd->scan_lvs)
|
|
cmd->edit_devices_file = 1;
|
|
|
|
/*
|
|
* Include foreign VGs that contain active LVs.
|
|
* That shouldn't happen in general, but if it does by some
|
|
* mistake, then we want to allow those LVs to be deactivated.
|
|
*/
|
|
if (arg_is_set(cmd, activate_ARG))
|
|
cmd->include_active_foreign_vgs = 1;
|
|
|
|
/* The default vg lock mode is ex, but these options only need sh. */
|
|
if ((cmd->command->command_enum == vgchange_activate_CMD) ||
|
|
(cmd->command->command_enum == vgchange_refresh_CMD)) {
|
|
cmd->lockd_vg_default_sh = 1;
|
|
/* Allow deactivating if locks fail. */
|
|
if (is_change_activating((activation_change_t)arg_uint_value(cmd, activate_ARG, CHANGE_AY)))
|
|
cmd->lockd_vg_enforce_sh = 1;
|
|
}
|
|
|
|
if (arg_is_set(cmd, autoactivation_ARG)) {
|
|
int skip_command = 0;
|
|
if (!_vgchange_autoactivation_setup(cmd, &vp, &skip_command, &vgname, &flags))
|
|
return ECMD_FAILED;
|
|
if (skip_command)
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
/*
|
|
* Do not use udev for device listing or device info because
|
|
* vgchange --monitor y is called during boot when udev is being
|
|
* initialized and is not yet ready to be used.
|
|
*/
|
|
if (arg_is_set(cmd, monitor_ARG) &&
|
|
arg_int_value(cmd, monitor_ARG, DEFAULT_DMEVENTD_MONITOR)) {
|
|
init_obtain_device_list_from_udev(0);
|
|
init_external_device_info_source(DEV_EXT_NONE);
|
|
}
|
|
|
|
if (update)
|
|
flags |= READ_FOR_UPDATE;
|
|
else if (arg_is_set(cmd, activate_ARG) ||
|
|
arg_is_set(cmd, refresh_ARG))
|
|
flags |= READ_FOR_ACTIVATE;
|
|
|
|
if (!(handle = init_processing_handle(cmd, NULL))) {
|
|
log_error("Failed to initialize processing handle.");
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
handle->custom_handle = &vp;
|
|
|
|
ret = process_each_vg(cmd, argc, argv, vgname, NULL, flags, 0, handle, &_vgchange_single);
|
|
|
|
destroy_processing_handle(cmd, handle);
|
|
return ret;
|
|
}
|
|
|
|
static int _vgchange_locktype(struct cmd_context *cmd, struct volume_group *vg)
|
|
{
|
|
const char *lock_type = arg_str_value(cmd, locktype_ARG, NULL);
|
|
const char *lockopt = arg_str_value(cmd, lockopt_ARG, NULL);
|
|
struct lv_list *lvl;
|
|
struct logical_volume *lv;
|
|
int lv_lock_count = 0;
|
|
|
|
/* Special recovery case. */
|
|
if (lock_type && lockopt && !strcmp(lock_type, "none") && !strcmp(lockopt, "force")) {
|
|
vg->status &= ~CLUSTERED;
|
|
vg->lock_type = "none";
|
|
vg->lock_args = NULL;
|
|
|
|
dm_list_iterate_items(lvl, &vg->lvs)
|
|
lvl->lv->lock_args = NULL;
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (!vg->lock_type) {
|
|
if (vg_is_clustered(vg))
|
|
vg->lock_type = "clvm";
|
|
else
|
|
vg->lock_type = "none";
|
|
}
|
|
|
|
if (lock_type && !strcmp(vg->lock_type, lock_type)) {
|
|
log_warn("WARNING: New lock type %s matches the current lock type %s.",
|
|
lock_type, vg->lock_type);
|
|
return 1;
|
|
}
|
|
|
|
if (is_lockd_type(vg->lock_type) && is_lockd_type(lock_type)) {
|
|
log_error("Cannot change lock type directly from \"%s\" to \"%s\".",
|
|
vg->lock_type, lock_type);
|
|
log_error("First change lock type to \"none\", then to \"%s\".",
|
|
lock_type);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* When lvm is currently using lvmlockd, this function can:
|
|
* - change none to lockd type
|
|
* - change none to clvm (with warning about not being able to use it)
|
|
* - change lockd type to none
|
|
* - change lockd type to clvm (with warning about not being able to use it)
|
|
* - change clvm to none
|
|
* - change clvm to lockd type
|
|
*/
|
|
|
|
if (lvs_in_vg_activated(vg)) {
|
|
log_error("Changing VG %s lock type not allowed with active LVs",
|
|
vg->name);
|
|
return 0;
|
|
}
|
|
|
|
/* clvm to none */
|
|
if (lock_type && !strcmp(vg->lock_type, "clvm") && !strcmp(lock_type, "none")) {
|
|
vg->status &= ~CLUSTERED;
|
|
vg->lock_type = "none";
|
|
return 1;
|
|
}
|
|
|
|
/* clvm to ..., first undo clvm */
|
|
if (!strcmp(vg->lock_type, "clvm")) {
|
|
vg->status &= ~CLUSTERED;
|
|
}
|
|
|
|
/*
|
|
* lockd type to ..., first undo lockd type
|
|
*/
|
|
if (is_lockd_type(vg->lock_type)) {
|
|
if (!lockd_free_vg_before(cmd, vg, 1))
|
|
return 0;
|
|
|
|
lockd_free_vg_final(cmd, vg);
|
|
|
|
vg->status &= ~CLUSTERED;
|
|
vg->lock_type = "none";
|
|
vg->lock_args = NULL;
|
|
|
|
dm_list_iterate_items(lvl, &vg->lvs)
|
|
lvl->lv->lock_args = NULL;
|
|
}
|
|
|
|
/* ... to lockd type */
|
|
if (is_lockd_type(lock_type)) {
|
|
/*
|
|
* For lock_type dlm, lockd_init_vg() will do a single
|
|
* vg_write() that sets lock_type, sets lock_args, clears
|
|
* system_id, and sets all LV lock_args to dlm.
|
|
* For lock_type sanlock, lockd_init_vg() needs to know
|
|
* how many LV locks are needed so that it can make the
|
|
* sanlock lv large enough.
|
|
*/
|
|
dm_list_iterate_items(lvl, &vg->lvs) {
|
|
lv = lvl->lv;
|
|
|
|
if (lockd_lv_uses_lock(lv)) {
|
|
lv_lock_count++;
|
|
|
|
if (!strcmp(lock_type, "dlm"))
|
|
lv->lock_args = "dlm";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* See below. We cannot set valid LV lock_args until stage 1
|
|
* of the change is done, so we need to skip the validation of
|
|
* the lock_args during stage 1.
|
|
*/
|
|
if (!strcmp(lock_type, "sanlock"))
|
|
vg->skip_validate_lock_args = 1;
|
|
|
|
vg->system_id = NULL;
|
|
|
|
if (!lockd_init_vg(cmd, vg, lock_type, lv_lock_count)) {
|
|
log_error("Failed to initialize lock args for lock type %s", lock_type);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* For lock_type sanlock, there must be multiple steps
|
|
* because the VG needs an active lvmlock LV before
|
|
* LV lock areas can be allocated, which must be done
|
|
* before LV lock_args are written. So, the LV lock_args
|
|
* remain unset during the first stage of the conversion.
|
|
*
|
|
* Stage 1:
|
|
* lockd_init_vg() creates and activates the lvmlock LV,
|
|
* then sets lock_type, sets lock_args, and clears system_id.
|
|
*
|
|
* Stage 2:
|
|
* We get here, and can now set LV lock_args. This uses
|
|
* the standard code path for allocating LV locks in
|
|
* vg_write() by setting LV lock_args to "pending",
|
|
* which tells vg_write() to call lockd_init_lv()
|
|
* and sets the lv->lock_args value before writing the VG.
|
|
*/
|
|
if (!strcmp(lock_type, "sanlock")) {
|
|
dm_list_iterate_items(lvl, &vg->lvs) {
|
|
lv = lvl->lv;
|
|
if (lockd_lv_uses_lock(lv))
|
|
lv->lock_args = "pending";
|
|
}
|
|
|
|
vg->skip_validate_lock_args = 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* ... to none */
|
|
if (lock_type && !strcmp(lock_type, "none")) {
|
|
vg->lock_type = NULL;
|
|
vg->system_id = cmd->system_id ? dm_pool_strdup(vg->vgmem, cmd->system_id) : NULL;
|
|
return 1;
|
|
}
|
|
|
|
log_error("Cannot change to unknown lock type %s", lock_type);
|
|
return 0;
|
|
}
|
|
|
|
static int _vgchange_locktype_single(struct cmd_context *cmd, const char *vg_name,
|
|
struct volume_group *vg,
|
|
struct processing_handle *handle)
|
|
{
|
|
if (!_vgchange_locktype(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
|
|
if (!vg_write(vg) || !vg_commit(vg))
|
|
return_ECMD_FAILED;
|
|
|
|
/*
|
|
* When init_vg_sanlock is called for vgcreate, the lockspace remains
|
|
* started and lvmlock remains active, but when called for
|
|
* vgchange --locktype sanlock, the lockspace is not started so the
|
|
* lvmlock LV should be deactivated at the end. vg_write writes the
|
|
* new leases to lvmlock, so we need to wait until after vg_write to
|
|
* deactivate it.
|
|
*/
|
|
if (vg->lock_type && !strcmp(vg->lock_type, "sanlock") &&
|
|
(cmd->command->command_enum == vgchange_locktype_CMD)) {
|
|
if (!deactivate_lv(cmd, vg->sanlock_lv)) {
|
|
log_error("Failed to deativate %s.",
|
|
display_lvname(vg->sanlock_lv));
|
|
return ECMD_FAILED;
|
|
}
|
|
}
|
|
|
|
log_print_unless_silent("Volume group \"%s\" successfully changed.", vg->name);
|
|
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
int vgchange_locktype_cmd(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
struct processing_handle *handle;
|
|
const char *lock_type = arg_str_value(cmd, locktype_ARG, NULL);
|
|
const char *lockopt = arg_str_value(cmd, lockopt_ARG, NULL);
|
|
int ret;
|
|
|
|
/*
|
|
* vgchange --locktype none --lockopt force VG
|
|
*
|
|
* This is a special/forced exception to change the lock type to none.
|
|
* It's needed for recovery cases and skips the normal steps of undoing
|
|
* the current lock type. It's a way to forcibly get access to a VG
|
|
* when the normal locking mechanisms are not working.
|
|
*
|
|
* It ignores: the current lvm locking config, lvmlockd, the state of
|
|
* the vg on other hosts, etc. It is meant to just remove any locking
|
|
* related metadata from the VG (cluster/lock_type flags, lock_type,
|
|
* lock_args).
|
|
*
|
|
* This can be necessary when manually recovering from certain failures.
|
|
* e.g. when a pv is lost containing the lvmlock lv (holding sanlock
|
|
* leases), the vg lock_type needs to be changed to none, and then
|
|
* back to sanlock, which recreates the lvmlock lv and leases.
|
|
*
|
|
* Set lockd_gl_disable, lockd_vg_disable, lockd_lv_disable to
|
|
* disable locking. lockd_gl(), lockd_vg() and lockd_lv() will
|
|
* just return success when they see the disable flag set.
|
|
*/
|
|
if (lockopt && !strcmp(lockopt, "force")) {
|
|
if (lock_type && strcmp(lock_type, "none")) {
|
|
log_error("Lock type can only be forced to \"none\" for recovery.");
|
|
return 0;
|
|
}
|
|
|
|
if (!arg_is_set(cmd, yes_ARG) &&
|
|
yes_no_prompt("Forcibly change VG lock type to none? [y/n]: ") == 'n') {
|
|
log_error("VG lock type not changed.");
|
|
return 0;
|
|
}
|
|
|
|
cmd->lockd_gl_disable = 1;
|
|
cmd->lockd_vg_disable = 1;
|
|
cmd->lockd_lv_disable = 1;
|
|
cmd->handles_missing_pvs = 1;
|
|
cmd->force_access_clustered = 1;
|
|
goto process;
|
|
}
|
|
|
|
if (!lvmlockd_use()) {
|
|
log_error("Using lock type requires lvmlockd.");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This is a special case where taking the global lock is
|
|
* not needed to protect global state, because the change is
|
|
* only to an existing VG. But, taking the global lock ex is
|
|
* helpful in this case to trigger a global cache validation
|
|
* on other hosts, to cause them to see the new system_id or
|
|
* lock_type.
|
|
*/
|
|
if (!lockd_global(cmd, "ex"))
|
|
return 0;
|
|
|
|
process:
|
|
if (!(handle = init_processing_handle(cmd, NULL))) {
|
|
log_error("Failed to initialize processing handle.");
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
ret = process_each_vg(cmd, argc, argv, NULL, NULL, READ_FOR_UPDATE, 0, handle, &_vgchange_locktype_single);
|
|
|
|
destroy_processing_handle(cmd, handle);
|
|
return ret;
|
|
}
|
|
|
|
static int _vgchange_lock_start_stop_single(struct cmd_context *cmd, const char *vg_name,
|
|
struct volume_group *vg,
|
|
struct processing_handle *handle)
|
|
{
|
|
struct vgchange_params *vp = (struct vgchange_params *)handle->custom_handle;
|
|
|
|
if (arg_is_set(cmd, lockstart_ARG)) {
|
|
if (!_vgchange_lock_start(cmd, vg, vp))
|
|
return_ECMD_FAILED;
|
|
} else if (arg_is_set(cmd, lockstop_ARG)) {
|
|
if (!_vgchange_lock_stop(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
}
|
|
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
int vgchange_lock_start_stop_cmd(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
struct processing_handle *handle;
|
|
struct vgchange_params vp = { 0 };
|
|
int ret;
|
|
|
|
if (!lvmlockd_use()) {
|
|
log_error("Using lock start and lock stop requires lvmlockd.");
|
|
return 0;
|
|
}
|
|
|
|
if (!(handle = init_processing_handle(cmd, NULL))) {
|
|
log_error("Failed to initialize processing handle.");
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (arg_is_set(cmd, lockstop_ARG))
|
|
cmd->lockd_vg_default_sh = 1;
|
|
|
|
/*
|
|
* Starting lockspaces. For VGs not yet started, locks are not
|
|
* available to acquire, and for VGs already started, there's nothing
|
|
* to do, so disable VG locks. Try to acquire the global lock sh to
|
|
* validate the cache (if no gl is available, lockd_gl will force a
|
|
* cache validation). If the global lock is available, it can be
|
|
* benficial to hold sh to serialize lock-start with vgremove of the
|
|
* same VG from another host.
|
|
*/
|
|
if (arg_is_set(cmd, lockstart_ARG)) {
|
|
cmd->lockd_vg_disable = 1;
|
|
|
|
if (!lockd_global(cmd, "sh"))
|
|
log_debug("No global lock for lock start.");
|
|
|
|
/* Disable the lockd_gl in process_each_vg. */
|
|
cmd->lockd_gl_disable = 1;
|
|
} else {
|
|
/* If the VG was started when it was exported, allow it to be stopped. */
|
|
cmd->include_exported_vgs = 1;
|
|
}
|
|
|
|
handle->custom_handle = &vp;
|
|
|
|
ret = process_each_vg(cmd, argc, argv, NULL, NULL, 0, 0, handle, &_vgchange_lock_start_stop_single);
|
|
|
|
/* Wait for lock-start ops that were initiated in vgchange_lockstart. */
|
|
|
|
if (arg_is_set(cmd, lockstart_ARG) && vp.lock_start_count) {
|
|
const char *start_opt = arg_str_value(cmd, lockopt_ARG, NULL);
|
|
|
|
if (!lockd_global(cmd, "un"))
|
|
stack;
|
|
|
|
if (!start_opt || !strcmp(start_opt, "auto")) {
|
|
if (vp.lock_start_sanlock)
|
|
log_print_unless_silent("Starting locking. Waiting for sanlock may take 20 sec to 3 min...");
|
|
else
|
|
log_print_unless_silent("Starting locking. Waiting until locks are ready...");
|
|
lockd_start_wait(cmd);
|
|
} else if (!strcmp(start_opt, "nowait") || !strcmp(start_opt, "autonowait")) {
|
|
log_print_unless_silent("Starting locking. VG can only be read until locks are ready.");
|
|
}
|
|
}
|
|
|
|
destroy_processing_handle(cmd, handle);
|
|
return ret;
|
|
}
|
|
|
|
static int _vgchange_systemid_single(struct cmd_context *cmd, const char *vg_name,
|
|
struct volume_group *vg,
|
|
struct processing_handle *handle)
|
|
{
|
|
if (arg_is_set(cmd, majoritypvs_ARG)) {
|
|
struct pv_list *pvl;
|
|
int missing_pvs = 0;
|
|
int found_pvs = 0;
|
|
|
|
dm_list_iterate_items(pvl, &vg->pvs) {
|
|
if (!pvl->pv->dev)
|
|
missing_pvs++;
|
|
else
|
|
found_pvs++;
|
|
}
|
|
if (found_pvs <= missing_pvs) {
|
|
log_error("Cannot change system ID without the majority of PVs (found %d of %d).",
|
|
found_pvs, found_pvs+missing_pvs);
|
|
return ECMD_FAILED;
|
|
}
|
|
}
|
|
|
|
if (!_vgchange_system_id(cmd, vg))
|
|
return_ECMD_FAILED;
|
|
|
|
if (!vg_write(vg) || !vg_commit(vg))
|
|
return_ECMD_FAILED;
|
|
|
|
log_print_unless_silent("Volume group \"%s\" successfully changed.", vg->name);
|
|
|
|
return ECMD_PROCESSED;
|
|
}
|
|
|
|
int vgchange_systemid_cmd(struct cmd_context *cmd, int argc, char **argv)
|
|
{
|
|
struct processing_handle *handle;
|
|
int ret;
|
|
|
|
/*
|
|
* This is a special case where taking the global lock is
|
|
* not needed to protect global state, because the change is
|
|
* only to an existing VG. But, taking the global lock ex is
|
|
* helpful in this case to trigger a global cache validation
|
|
* on other hosts, to cause them to see the new system_id or
|
|
* lock_type.
|
|
*/
|
|
if (!lockd_global(cmd, "ex"))
|
|
return 0;
|
|
|
|
if (!(handle = init_processing_handle(cmd, NULL))) {
|
|
log_error("Failed to initialize processing handle.");
|
|
return ECMD_FAILED;
|
|
}
|
|
|
|
if (arg_is_set(cmd, majoritypvs_ARG))
|
|
cmd->handles_missing_pvs = 1;
|
|
|
|
ret = process_each_vg(cmd, argc, argv, NULL, NULL, READ_FOR_UPDATE, 0, handle, &_vgchange_systemid_single);
|
|
|
|
destroy_processing_handle(cmd, handle);
|
|
return ret;
|
|
}
|
|
|