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vgcfgrestore(8) [mojave man page]

VGCFGRESTORE(8)                                               System Manager's Manual                                              VGCFGRESTORE(8)

vgcfgrestore - restore volume group descriptor area SYNOPSIS
vgcfgrestore [-d|--debug] [-f|--file filename] [-l[l]|--list] [-h|--help] [-M|--Metadatatype1|2] [-t|--test] [-v|--verbose] VolumeGroupName DESCRIPTION
vgcfgrestore allows you to restore the metadata of VolumeGroupName from a text backup file produced by vgcfgbackup. You can specify a backup file with --file. If no backup file is specified, the most recent one is used. Use --list for a list of the available backup and archive files of VolumeGroupName. OPTIONS
-l | --list -- List files pertaining to VolumeGroupName List metadata backup and archive files pertaining to VolumeGroupName. May be used with the -f option. Does not restore Vol- umeGroupName. -f | --file filename -- Name of LVM metadata backup file Specifies a metadata backup or archive file to be used for restoring VolumeGroupName. Often this file has been created with vgcfg- backup. See lvm for common options. REPLACING PHYSICAL VOLUMES
vgdisplay --partial --verbose will show you the UUIDs and sizes of any PVs that are no longer present. If a PV in the VG is lost and you wish to substitute another of the same size, use pvcreate --restorefile filename --uuid uuid (plus additional arguments as appropriate) to initialise it with the same UUID as the missing PV. Repeat for all other missing PVs in the VG. Then use vgcfgrestore --file filename to restore the volume group's metadata. SEE ALSO
lvm(8), vgcreate(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGCFGRESTORE(8)

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VGCHANGE(8)						      System Manager's Manual						       VGCHANGE(8)

vgchange - change attributes of a volume group SYNOPSIS
vgchange [-A|--autobackup {y|n}] [-a|--available {y|n}] [-d|--debug] [-h|--help] [-l|--logicalvolume MaxLogicalVolumes] [-v|--verbose] [--version] [-x|--allocation {y|n}] [VolumeGroupName...] DESCRIPTION
vgchange allows you to change the attributes of one or more volume groups. Its main purpose is to activate and deactivate VolumeGroupName, or all volume groups if none is specified. Only active volume groups are subject to changes and allow access to their logical volumes. During volume group activation, if vgchange recognizes snapshot logical volumes which were dropped because they ran out of space, it dis- plays a message informing the administrator that such snapshots should be removed (see lvremove(8)). OPTIONS -A, --autobackup{y|n} Controls automatic backup of metadata after the change. See vgcfgbackup (8). Default is yes. -a, --available{y|n} Controls the availability of the volume group for input/output. In other words: makes a volume group known/unknown to the kernel. -d, --debug Enables additional debugging output (if compiled with DEBUG). -h, --help Print a usage message on standard output and exit successfully. -l, --logicalvolume MaxLogicalVolumes Changes the maximum logical volume number of an existing inactive volume group. -v, --verbose Displays verbose runtime information about vgchange's activities. --version Displays tool and IOP version and exit successfully. -x, --allocation{y|n} Enables or disables the extension/reduction of this volume group with/by physical volumes. EXAMPLES
To activate all known volume groups in the system: vgchange -a y To change the maximum number of logical volumes of inactive volume group vg00 to 128. vgchange -l 128 /dev/vg00 DIAGNOSTICS
vgchange returns an exit code of 0 for success and > 0 for error: 1 error writing VGDA to physical volume(s) 2 error changing extensibility of volume group 3 error doing backup of VGDA 4 extension of MaxLogicalVolume would cause overlapped physical extents 5 error backup of volume group metadata 6 error copying volume group metadata to work file 7 error creating volume group directory and special files 8 error removing volume group directory and special files 95 driver/module not in kernel 96 invalid I/O protocol version 97 error locking logical volume manager 98 invalid lvmtab (run vgscan(8)) 99 invalid command line If volume groups can't be activated, run vgscan(8) and retry. ENVIRONMENT VARIABLES
LVM_AUTOBACKUP If this variable is set to "no" then the automatic backup of VG metadata is turned off. LVM_VG_MAX_BACKUPS This variable determines the backup history depth of kept VGDA copy files in /etc/lvmconf. It can be set to a positive number between 0 and 999. The higher this number is, the more changes you can restore using vgcfgrestore(8). SEE ALSO
lvm(8), vgcreate(8) AUTHOR
Heinz Mauelshagen <> Heinz Mauelshagen LVM TOOLS VGCHANGE(8)
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