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git://sourceware.org/git/lvm2.git
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9b640c3684
This refactors the code for autoactivation. Previously, as each PV was found, it would be sent to lvmetad, and the VG would be autoactivated using a non-standard VG processing function (the "activation_handler") called via a function pointer from within the lvmetad notification path. Now, any scanning that the command needs to do (scanning only the named device args, or scanning all devices when there are no args), is done first, before any activation is attempted. During the scans, the VG names are saved. After scanning is complete, process_each_vg is used to do autoactivation of the saved VG names. This makes pvscan activation much more similar to activation done with vgchange or lvchange. The separate autoactivate phase also means that if lvmetad is disabled (either before or during the scan), the command can continue with the activation step by simply not using lvmetad and reverting to disk scanning to do the activation.
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2009 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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static int vgimport_single(struct cmd_context *cmd,
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const char *vg_name,
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struct volume_group *vg,
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struct processing_handle *handle __attribute__((unused)))
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{
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struct pv_list *pvl;
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struct physical_volume *pv;
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if (!vg_is_exported(vg)) {
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log_error("Volume group \"%s\" is not exported", vg_name);
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goto bad;
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}
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if (vg_status(vg) & PARTIAL_VG) {
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log_error("Volume group \"%s\" is partially missing", vg_name);
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goto bad;
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}
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if (!archive(vg))
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goto_bad;
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vg->status &= ~EXPORTED_VG;
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if (!is_lockd_type(vg->lock_type))
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vg->system_id = cmd->system_id ? dm_pool_strdup(vg->vgmem, cmd->system_id) : NULL;
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dm_list_iterate_items(pvl, &vg->pvs) {
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pv = pvl->pv;
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pv->status &= ~EXPORTED_VG;
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}
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if (!vg_write(vg) || !vg_commit(vg))
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goto_bad;
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backup(vg);
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log_print_unless_silent("Volume group \"%s\" successfully imported", vg->name);
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return ECMD_PROCESSED;
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bad:
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return ECMD_FAILED;
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}
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int vgimport(struct cmd_context *cmd, int argc, char **argv)
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{
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const char *reason = NULL;
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if (!argc && !arg_count(cmd, all_ARG) && !arg_is_set(cmd, select_ARG)) {
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log_error("Please supply volume groups or -S for selection or use -a for all.");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, all_ARG) && (argc || arg_is_set(cmd, select_ARG))) {
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log_error("No arguments permitted when using -a for all.");
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return EINVALID_CMD_LINE;
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}
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if (arg_count(cmd, force_ARG)) {
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/*
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* The volume group cannot be repaired unless it is first
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* imported. If we don't allow the user a way to import the
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* VG while it is 'partial', then we will have created a
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* circular dependency.
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*
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* The reason we don't just simply set 'handles_missing_pvs'
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* by default is that we want to guard against the case
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* where the user simply forgot to move one or more disks in
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* the VG before running 'vgimport'.
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*/
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log_warn("WARNING: Volume groups with missing PVs will be imported with --force.");
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cmd->handles_missing_pvs = 1;
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}
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/*
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* Rescan devices and update lvmetad. lvmetad may hold a copy of the
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* VG from before it was exported, if it was exported by another host.
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* We need to reread it to see that it's been exported before we can
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* import it.
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*/
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if (lvmetad_used()) {
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if (!lvmetad_pvscan_all_devs(cmd, 1)) {
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log_warn("WARNING: Not using lvmetad because cache update failed.");
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lvmetad_make_unused(cmd);
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}
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if (lvmetad_used() && lvmetad_is_disabled(cmd, &reason)) {
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log_warn("WARNING: Not using lvmetad because %s.", reason);
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lvmetad_make_unused(cmd);
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}
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}
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return process_each_vg(cmd, argc, argv, NULL, NULL,
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READ_FOR_UPDATE | READ_ALLOW_EXPORTED,
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NULL,
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&vgimport_single);
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}
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