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/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tools.h"
int vgcreate(struct cmd_context *cmd, int argc, char **argv)
{
struct processing_handle *handle;
struct pvcreate_params pp;
struct vgcreate_params vp_new;
struct vgcreate_params vp_def;
struct volume_group *vg;
const char *tag;
char *vg_name;
struct arg_value_group_list *current_group;
if (!argc) {
log_error("Please provide volume group name and "
"physical volumes");
return EINVALID_CMD_LINE;
}
vg_name = argv[0];
argc--;
argv++;
pvcreate_params_set_defaults(&pp);
if (!pvcreate_params_from_args(cmd, &pp))
return EINVALID_CMD_LINE;
pp.pv_count = argc;
pp.pv_names = argv;
/* Don't create a new PV on top of an existing PV like pvcreate does. */
pp.preserve_existing = 1;
pp.check_consistent_block_size = 1;
if (!vgcreate_params_set_defaults(cmd, &vp_def, NULL))
return EINVALID_CMD_LINE;
vp_def.vg_name = vg_name;
if (!vgcreate_params_set_from_args(cmd, &vp_new, &vp_def))
return EINVALID_CMD_LINE;
if (!vgcreate_params_validate(cmd, &vp_new))
return EINVALID_CMD_LINE;
if (!lockf_global(cmd, "ex"))
return_ECMD_FAILED;
if (!lockd_global_create(cmd, "ex", vp_new.lock_type))
return_ECMD_FAILED;
clear_hint_file(cmd);
/*
* Check if the VG name already exists. This should be done before
* creating PVs on any of the devices.
*
* When searching if a VG name exists, acquire the VG lock,
* then do the initial label scan which reads all devices and
* populates lvmcache with any VG name it finds. If the VG name
* we want to use exists, then the label scan will find it,
* and the vginfo_from_vgname call (used to check if the name exists)
* will return non-NULL.
*/
if (!lock_vol(cmd, vp_new.vg_name, LCK_VG_WRITE, NULL)) {
log_error("Can't get lock for %s.", vp_new.vg_name);
return ECMD_FAILED;
}
cmd->create_edit_devices_file = 1;
lvmcache_label_scan(cmd);
if (lvmcache_vginfo_from_vgname(vp_new.vg_name, NULL)) {
unlock_vg(cmd, NULL, vp_new.vg_name);
log_error("A volume group called %s already exists.", vp_new.vg_name);
return ECMD_FAILED;
}
if (!(handle = init_processing_handle(cmd, NULL))) {
log_error("Failed to initialize processing handle.");
return ECMD_FAILED;
}
if (!pvcreate_each_device(cmd, handle, &pp)) {
destroy_processing_handle(cmd, handle);
return_ECMD_FAILED;
}
unlock_devices_file(cmd);
if (!(vg = vg_create(cmd, vp_new.vg_name)))
goto_bad;
if (vg->fid->fmt->features & FMT_CONFIG_PROFILE)
vg->profile = vg->cmd->profile_params->global_metadata_profile;
if (!vg_set_extent_size(vg, vp_new.extent_size) ||
!vg_set_max_lv(vg, vp_new.max_lv) ||
!vg_set_max_pv(vg, vp_new.max_pv) ||
!vg_set_alloc_policy(vg, vp_new.alloc) ||
!vg_set_system_id(vg, vp_new.system_id) ||
!vg_set_mda_copies(vg, vp_new.vgmetadatacopies))
goto_bad;
if (arg_is_set(cmd, setautoactivation_ARG) && !arg_int_value(cmd, setautoactivation_ARG, 1))
vg->status |= NOAUTOACTIVATE;
/* attach the pv's */
if (!vg_extend_each_pv(vg, &pp))
goto_bad;
if (vp_new.max_lv != vg->max_lv)
log_warn("WARNING: Setting maxlogicalvolumes to %d "
"(0 means unlimited)", vg->max_lv);
if (vp_new.max_pv != vg->max_pv)
log_warn("WARNING: Setting maxphysicalvolumes to %d "
"(0 means unlimited)", vg->max_pv);
if (arg_is_set(cmd, addtag_ARG)) {
dm_list_iterate_items(current_group, &cmd->arg_value_groups) {
if (!grouped_arg_is_set(current_group->arg_values, addtag_ARG))
continue;
if (!(tag = grouped_arg_str_value(current_group->arg_values, addtag_ARG, NULL))) {
log_error("Failed to get tag");
goto bad;
}
if (!vg_change_tag(vg, tag, 1))
goto_bad;
}
}
/* Store VG on disk(s) */
if (!vg_write(vg) || !vg_commit(vg))
goto_bad;
/*
* The VG is initially written without lock_type set, i.e. it starts as
* a local VG. lockd_init_vg() then writes the VG a second time with
* both lock_type and lock_args set.
*/
if (!lockd_init_vg(cmd, vg, vp_new.lock_type, 0)) {
log_error("Failed to initialize lock args for lock type %s",
vp_new.lock_type);
vg_remove_pvs(vg);
vg_remove_direct(vg);
goto_bad;
}
unlock_vg(cmd, vg, vp_new.vg_name);
log_print_unless_silent("Volume group \"%s\" successfully created%s%s",
vg->name,
vg->system_id ? " with system ID " : "", vg->system_id ? : "");
/*
* Start the VG lockspace because it will likely be used right away.
* Optionally wait for the start to complete so the VG can be fully
* used after this command completes (otherwise, the VG can only be
* read without locks until the lockspace is done starting.)
*/
if (vg_is_shared(vg)) {
const char *start_opt = arg_str_value(cmd, lockopt_ARG, NULL);
if (!lockd_start_vg(cmd, vg, 1, NULL)) {
log_error("Failed to start locking");
goto out;
}
lock_global(cmd, "un");
if (!start_opt || !strcmp(start_opt, "wait")) {
/* It is OK if the user does Ctrl-C to cancel the wait. */
log_print_unless_silent("Starting locking. Waiting until locks are ready...");
lockd_start_wait(cmd);
} else if (!strcmp(start_opt, "nowait")) {
log_print_unless_silent("Starting locking. VG is read-only until locks are ready.");
}
}
out:
release_vg(vg);
destroy_processing_handle(cmd, handle);
return ECMD_PROCESSED;
bad:
unlock_vg(cmd, vg, vp_new.vg_name);
release_vg(vg);
destroy_processing_handle(cmd, handle);
return ECMD_FAILED;
}
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