int lvm_lv_activate(lv_t lv)
{
if (!lv || !lv->vg || vg_read_error(lv->vg) || !lv->vg->cmd)
return -1;
/* FIXME: handle pvmove stuff later */
if (lv->status & LOCKED) {
log_error("Unable to activate locked LV");
return -1;
}
/* FIXME: handle lvconvert stuff later */
if (lv->status & CONVERTING) {
log_error("Unable to activate LV with in-progress lvconvert");
return -1;
}
if (lv_is_origin(lv)) {
log_verbose("Activating logical volume \"%s\" "
"exclusively", lv->name);
if (!activate_lv_excl(lv->vg->cmd, lv)) {
log_error("Activate exclusive failed.");
return -1;
}
} else {
log_verbose("Activating logical volume \"%s\"",
lv->name);
if (!activate_lv(lv->vg->cmd, lv)) {
log_error("Activate failed.");
return -1;
}
}
return 0;
}
static int _lvchange_activate(struct cmd_context *cmd, struct logical_volume *lv)
{
int activate;
activate = arg_uint_value(cmd, activate_ARG, 0);
if (lv_is_cow(lv) && !lv_is_virtual_origin(origin_from_cow(lv)))
lv = origin_from_cow(lv);
if (activate == CHANGE_AAY) {
if (!lv_passes_auto_activation_filter(cmd, lv))
return 1;
activate = CHANGE_ALY;
}
if (activate == CHANGE_ALN) {
log_verbose("Deactivating logical volume \"%s\" locally",
lv->name);
if (!deactivate_lv_local(cmd, lv))
return_0;
} else if (activate == CHANGE_AN) {
log_verbose("Deactivating logical volume \"%s\"", lv->name);
if (!deactivate_lv(cmd, lv))
return_0;
} else {
if ((activate == CHANGE_AE) ||
lv_is_origin(lv) ||
lv_is_thin_type(lv)) {
log_verbose("Activating logical volume \"%s\" "
"exclusively", lv->name);
if (!activate_lv_excl(cmd, lv))
return_0;
} else if (activate == CHANGE_ALY) {
log_verbose("Activating logical volume \"%s\" locally",
lv->name);
if (!activate_lv_local(cmd, lv))
return_0;
} else {
log_verbose("Activating logical volume \"%s\"",
lv->name);
if (!activate_lv(cmd, lv))
return_0;
}
if (background_polling())
lv_spawn_background_polling(cmd, lv);
}
return 1;
}
/*
* Cleanup orphan device in the table with temporary activation
* since in the suspend() we can't deactivate unused nodes
* and the resume() phase mishandles orphan nodes.
*
* TODO: improve libdm to handle this case automatically
*/
static int _cleanup_orphan_lv(struct logical_volume *lv)
{
lv->status |= LV_TEMPORARY;
if (!activate_lv(lv->vg->cmd, lv)) {
log_error("Failed to activate temporary %s", lv->name);
return 0;
}
if (!deactivate_lv(lv->vg->cmd, lv)) {
log_error("Failed to deactivate temporary %s", lv->name);
return 0;
}
lv->status &= ~LV_TEMPORARY;
return 1;
}
static int lvchange_availability(struct cmd_context *cmd,
struct logical_volume *lv)
{
int activate;
activate = arg_uint_value(cmd, available_ARG, 0);
if (activate == CHANGE_ALN) {
log_verbose("Deactivating logical volume \"%s\" locally",
lv->name);
if (!deactivate_lv_local(cmd, lv))
return_0;
} else if (activate == CHANGE_AN) {
log_verbose("Deactivating logical volume \"%s\"", lv->name);
if (!deactivate_lv(cmd, lv))
return_0;
} else {
if (lv_is_origin(lv) || (activate == CHANGE_AE)) {
log_verbose("Activating logical volume \"%s\" "
"exclusively", lv->name);
if (!activate_lv_excl(cmd, lv))
return_0;
} else if (activate == CHANGE_ALY) {
log_verbose("Activating logical volume \"%s\" locally",
lv->name);
if (!activate_lv_local(cmd, lv))
return_0;
} else {
log_verbose("Activating logical volume \"%s\"",
lv->name);
if (!activate_lv(cmd, lv))
return_0;
}
if (background_polling())
lv_spawn_background_polling(cmd, lv);
}
return 1;
}
static int lvchange_persistent(struct cmd_context *cmd,
struct logical_volume *lv)
{
struct lvinfo info;
int active = 0;
if (!strcmp(arg_str_value(cmd, persistent_ARG, "n"), "n")) {
if (!(lv->status & FIXED_MINOR)) {
log_error("Minor number is already not persistent "
"for \"%s\"", lv->name);
return 0;
}
lv->status &= ~FIXED_MINOR;
lv->minor = -1;
lv->major = -1;
log_verbose("Disabling persistent device number for \"%s\"",
lv->name);
} else {
if (!arg_count(cmd, minor_ARG) && lv->minor < 0) {
log_error("Minor number must be specified with -My");
return 0;
}
if (arg_count(cmd, major_ARG) > 1) {
log_error("Option -j/--major may not be repeated.");
return 0;
}
if (arg_count(cmd, minor_ARG) > 1) {
log_error("Option --minor may not be repeated.");
return 0;
}
if (!arg_count(cmd, major_ARG) && lv->major < 0) {
log_error("Major number must be specified with -My");
return 0;
}
if (lv_info(cmd, lv, 0, &info, 0, 0) && info.exists)
active = 1;
if (active && !arg_count(cmd, force_ARG) &&
yes_no_prompt("Logical volume %s will be "
"deactivated temporarily. "
"Continue? [y/n]: ", lv->name) == 'n') {
log_error("%s device number not changed.",
lv->name);
return 0;
}
if (sigint_caught())
return 0;
log_verbose("Ensuring %s is inactive.", lv->name);
if (!deactivate_lv(cmd, lv)) {
log_error("%s: deactivation failed", lv->name);
return 0;
}
lv->status |= FIXED_MINOR;
lv->minor = arg_int_value(cmd, minor_ARG, lv->minor);
lv->major = arg_int_value(cmd, major_ARG, lv->major);
log_verbose("Setting persistent device number to (%d, %d) "
"for \"%s\"", lv->major, lv->minor, lv->name);
}
log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
if (!vg_write(lv->vg) || !vg_commit(lv->vg))
return_0;
backup(lv->vg);
if (active) {
log_verbose("Re-activating logical volume \"%s\"", lv->name);
if (!activate_lv(cmd, lv)) {
log_error("%s: reactivation failed", lv->name);
return 0;
}
}
return 1;
}
static int lvchange_resync(struct cmd_context *cmd,
struct logical_volume *lv)
{
int active = 0;
int monitored;
struct lvinfo info;
struct logical_volume *log_lv;
if (!(lv->status & MIRRORED)) {
log_error("Unable to resync %s because it is not mirrored.",
lv->name);
return 1;
}
if (lv->status & PVMOVE) {
log_error("Unable to resync pvmove volume %s", lv->name);
return 0;
}
if (lv->status & LOCKED) {
log_error("Unable to resync locked volume %s", lv->name);
return 0;
}
if (lv_info(cmd, lv, 0, &info, 1, 0)) {
if (info.open_count) {
log_error("Can't resync open logical volume \"%s\"",
lv->name);
return 0;
}
if (info.exists) {
if (!arg_count(cmd, yes_ARG) &&
yes_no_prompt("Do you really want to deactivate "
"logical volume %s to resync it? [y/n]: ",
lv->name) == 'n') {
log_error("Logical volume \"%s\" not resynced",
lv->name);
return 0;
}
if (sigint_caught())
return 0;
active = 1;
}
}
/* Activate exclusively to ensure no nodes still have LV active */
monitored = dmeventd_monitor_mode();
init_dmeventd_monitor(0);
if (!deactivate_lv(cmd, lv)) {
log_error("Unable to deactivate %s for resync", lv->name);
return 0;
}
if (vg_is_clustered(lv->vg) && lv_is_active(lv)) {
log_error("Can't get exclusive access to clustered volume %s",
lv->name);
return 0;
}
init_dmeventd_monitor(monitored);
log_lv = first_seg(lv)->log_lv;
log_very_verbose("Starting resync of %s%s%s mirror \"%s\"",
(active) ? "active " : "",
vg_is_clustered(lv->vg) ? "clustered " : "",
(log_lv) ? "disk-logged" : "core-logged",
lv->name);
/*
* If this mirror has a core log (i.e. !log_lv),
* then simply deactivating/activating will cause
* it to reset the sync status. We only need to
* worry about persistent logs.
*/
if (!log_lv && !(lv->status & LV_NOTSYNCED)) {
if (active && !activate_lv(cmd, lv)) {
log_error("Failed to reactivate %s to resynchronize "
"mirror", lv->name);
return 0;
}
return 1;
}
lv->status &= ~LV_NOTSYNCED;
if (log_lv) {
/* Separate mirror log so we can clear it */
detach_mirror_log(first_seg(lv));
if (!vg_write(lv->vg)) {
log_error("Failed to write intermediate VG metadata.");
if (!attach_mirror_log(first_seg(lv), log_lv))
stack;
if (active && !activate_lv(cmd, lv))
stack;
return 0;
}
if (!vg_commit(lv->vg)) {
log_error("Failed to commit intermediate VG metadata.");
if (!attach_mirror_log(first_seg(lv), log_lv))
stack;
if (active && !activate_lv(cmd, lv))
stack;
return 0;
}
backup(lv->vg);
if (!activate_lv(cmd, log_lv)) {
log_error("Unable to activate %s for mirror log resync",
log_lv->name);
return 0;
}
log_very_verbose("Clearing log device %s", log_lv->name);
if (!set_lv(cmd, log_lv, log_lv->size, 0)) {
log_error("Unable to reset sync status for %s", lv->name);
if (!deactivate_lv(cmd, log_lv))
log_error("Failed to deactivate log LV after "
"wiping failed");
return 0;
}
if (!deactivate_lv(cmd, log_lv)) {
log_error("Unable to deactivate log LV %s after wiping "
"for resync", log_lv->name);
return 0;
}
/* Put mirror log back in place */
if (!attach_mirror_log(first_seg(lv), log_lv))
stack;
}
log_very_verbose("Updating logical volume \"%s\" on disk(s)", lv->name);
if (!vg_write(lv->vg) || !vg_commit(lv->vg)) {
log_error("Failed to update metadata on disk.");
return 0;
}
if (active && !activate_lv(cmd, lv)) {
log_error("Failed to reactivate %s after resync", lv->name);
return 0;
}
return 1;
}
int vg_remove_snapshot(struct logical_volume *cow)
{
int merging_snapshot = 0;
struct logical_volume *origin = origin_from_cow(cow);
int is_origin_active = lv_is_active(origin);
if (is_origin_active &&
lv_is_virtual_origin(origin)) {
if (!deactivate_lv(origin->vg->cmd, origin)) {
log_error("Failed to deactivate logical volume \"%s\"",
origin->name);
return 0;
}
is_origin_active = 0;
}
dm_list_del(&cow->snapshot->origin_list);
origin->origin_count--;
if (lv_is_merging_origin(origin) &&
(find_snapshot(origin) == find_snapshot(cow))) {
clear_snapshot_merge(origin);
/*
* preload origin IFF "snapshot-merge" target is active
* - IMPORTANT: avoids preload if inactivate merge is pending
*/
if (lv_has_target_type(origin->vg->vgmem, origin, NULL,
TARGET_NAME_SNAPSHOT_MERGE)) {
/*
* preload origin to:
* - allow proper release of -cow
* - avoid allocations with other devices suspended
* when transitioning from "snapshot-merge" to
* "snapshot-origin after a merge completes.
*/
merging_snapshot = 1;
}
}
if (!lv_remove(cow->snapshot->lv)) {
log_error("Failed to remove internal snapshot LV %s",
cow->snapshot->lv->name);
return 0;
}
cow->snapshot = NULL;
lv_set_visible(cow);
/* format1 must do the change in one step, with the commit last. */
if (!(origin->vg->fid->fmt->features & FMT_MDAS)) {
/* Get the lock for COW volume */
if (is_origin_active && !activate_lv(cow->vg->cmd, cow)) {
log_error("Unable to activate logical volume \"%s\"",
cow->name);
return 0;
}
return 1;
}
if (!vg_write(origin->vg))
return_0;
/* Skip call suspend, if device is not active */
if (is_origin_active && !suspend_lv(origin->vg->cmd, origin)) {
log_error("Failed to refresh %s without snapshot.",
origin->name);
vg_revert(origin->vg);
return 0;
}
if (!vg_commit(origin->vg))
return_0;
if (is_origin_active) {
/*
* If the snapshot was active and the COW LV is taken away
* the LV lock on cluster has to be grabbed, so use
* activate_lv() which resumes suspend cow device.
*/
if (!merging_snapshot && !activate_lv(cow->vg->cmd, cow)) {
log_error("Failed to activate %s.", cow->name);
return 0;
}
if (!resume_lv(origin->vg->cmd, origin)) {
log_error("Failed to resume %s.", origin->name);
return 0;
}
/*
* For merged snapshot and clustered VG activate cow LV so
* the following call to deactivate_lv() can clean-up table
* entries. For this clustered lock need to be held.
*/
if (vg_is_clustered(cow->vg) &&
merging_snapshot && !activate_lv(cow->vg->cmd, cow)) {
log_error("Failed to activate %s.", cow->name);
return 0;
}
}
return 1;
}
