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lvm2/lib/format_text/archiver.h

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/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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*
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* 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
Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1.
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* of the GNU Lesser General Public License v.2.1.
Update copyright notices.
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*
Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1.
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* You should have received a copy of the GNU Lesser General Public License
Update copyright notices.
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* along with this program; if not, write to the Free Software Foundation,
doc: change fsf address Hmm rpmlint suggest fsf is using a different address these days, so lets keep it up-to-date
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
#ifndef _LVM_TOOL_ARCHIVE_H
#define _LVM_TOOL_ARCHIVE_H
Split metadata-external.h out from metadata.h for the tools to use.
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#include "metadata-exported.h"
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/*
* There are two operations that come under the general area of
* backups. 'Archiving' occurs just before a volume group
* configuration is changed. The user may configure when
* archived files are expired. Typically archives will be stored
* in /etc/lvm/archive.
*
* A 'backup' is a redundant copy of the *current* volume group
* configuration. As such it should be taken just after the
* volume group is changed. Only 1 backup file will exist.
* Typically backups will be stored in /etc/lvm/backups.
*/
Move archiver code from tools into library.
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int archive_init(struct cmd_context *cmd, const char *dir,
Remove archive_enable() calls after create_toolcontext() calls. _init_backup() calls archive_init(), which originally set 'enabled' to a hardcoded '1' value. This seems incorrect based on my read of other areas of the code so here we add a 'enabled' paramter to archive_init(). We pass in cmd->default_settings.archive, which is obtained from the config tree. Later in create_toolcontext, cmd->current_settings is set to cmd->default_settings. The archive_enable() call we remove here was using cmd->current_settings to set the 'archive' enable value. The final value of cmd->archive_params->enabled should thus be equivalent to the original code.
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unsigned int keep_days, unsigned int keep_min,
int enabled);
Move archiver code from tools into library.
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void archive_exit(struct cmd_context *cmd);
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void archive_enable(struct cmd_context *cmd, int flag);
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int archive(struct volume_group *vg);
int archive_display(struct cmd_context *cmd, const char *vg_name);
Allow vgcfgrestore to list metadata backup files using -f
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int archive_display_file(struct cmd_context *cmd, const char *file);
Rename some files to avoid duplicate filenames in tree.
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Remove backup_enable() calls after create_toolcontext() calls. Identical argument to previous patch which removed archive_enable() calls. We add a new parameter to backup_init() which sets the enable value based on the cmd->default_settings.backup value. This value was used to set cmd->current_settings.backup, used in the removed backup_enable() call.
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int backup_init(struct cmd_context *cmd, const char *dir, int enabled);
Move archiver code from tools into library.
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void backup_exit(struct cmd_context *cmd);
Rename some files to avoid duplicate filenames in tree.
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Move archiver code from tools into library.
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void backup_enable(struct cmd_context *cmd, int flag);
Rename some files to avoid duplicate filenames in tree.
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int backup(struct volume_group *vg);
Fix remote metadata backup for clvmd Run backup of metadata on remote nodes in the same place like local node - when calling backup(). Introduce backup_locally() which calls only local backup if needed. Remote backup is now trigerred by LCK_VG_BACKUP flag combination (special VG lock). This lock type will call check_current_backup() (including backup_locally() call) and updates metadata on all nodes. (Patch fixes non-functional remote backup, current call during VG lock never triggers.)
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int backup_locally(struct volume_group *vg);
Move archiver code from tools into library.
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int backup_remove(struct cmd_context *cmd, const char *vg_name);
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struct volume_group *backup_read_vg(struct cmd_context *cmd,
const char *vg_name, const char *file);
vgconvert: refactor to avoid pvcreate code This uses the vg->pv_write_list in place of the vg->pvs_to_write list, and eliminates the use of pvcreate_params. The label remove and zeroing steps are shifted out of vg_write() to the higher level like pvcreate will do.
2016-02-16 22:22:50 +03:00
backup: backup_restore_vg: register PVs that need writing via vg->pvs_to_write list The backup_restore_vg is used directly for restoring the VG from backup. It's also used to do the VG conversions from one metadata format to another which means vgconvert calls backup_restore_vg too. When restoring VG from backup, we need to rewrite/write PV headers as PVs may have been orphans before and now they're becoming part of some VG - we need to write the PV_EXT_USED flag at least. When using the backup_restore_vg for vgconvert, we need to write completely new PV header in different format. Avoid the special "pv_write" call and handling that was used before this patch in vgconvert (vgconvert_single function to be more precise) and reuse existing internal interface to register PV header for writing (or rewriting) via vg->pvs_to_write list instead like we do it elsewhere in the code. This patch also resolves a problem in which PV headers with target format were written in the vgconvert_single fn as orphans and VG metadata were added later on - this was a tiny hack actually. We can't do this now - we need to write the PV as belonging to a VG because otherwise the PV_EXT_USED flag won't be written properly (if the PV header is written as orphan, the PV_EXT_USED is set to 0, of course, even though metadata are attached later). So this patch removes this tiny inconsistency which was passing just fine before because we didn't have any relation to the VG in PV header before. Now we have the PV_EXT_USED flag which says the "PV is used in some VG".
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int backup_restore_vg(struct cmd_context *cmd, struct volume_group *vg,
vgcfgrestore: use lvmetad disabled state Previously, vgcfgrestore would attempt to vg_remove the existing VG from lvmetad and then vg_update to add the restored VG. But, if there was a failure in the command or with vg_update, the lvmetad cache would be left incorrect. Now, disable lvmetad before the restore begins, and then rescan to populate lvmetad from disk after restore has written the new VG to disk.
2016-06-18 00:37:30 +03:00
int do_pvcreate, struct pv_create_args *pva);
vgconvert: refactor to avoid pvcreate code This uses the vg->pv_write_list in place of the vg->pvs_to_write list, and eliminates the use of pvcreate_params. The label remove and zeroing steps are shifted out of vg_write() to the higher level like pvcreate will do.
2016-02-16 22:22:50 +03:00
Rename some files to avoid duplicate filenames in tree.
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int backup_restore_from_file(struct cmd_context *cmd, const char *vg_name,
thin: allow restore with --force Allow restoring metadata with thin pool volumes. No validation is done for this case within vgcfgrestore tool - thus incorrect metadata may lead to destruction of pool content.
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const char *file, int force);
int backup_restore(struct cmd_context *cmd, const char *vg_name, int force);
Rename some files to avoid duplicate filenames in tree.
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int backup_to_file(const char *file, const char *desc, struct volume_group *vg);
vgscan/change/display/vgs automatically create metadata backup if out-of-date or missing.
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void check_current_backup(struct volume_group *vg);
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#endif
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