vgscan(8) [redhat man page]

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

NAME

       vgscan - scan all disks for volume groups and build /etc/lvmtab and /etc/lvmtab.d/* which are the database for all other lvm commands.

SYNOPSIS

       vgscan [-d|--debug] [-f|--forcenumbers] [-h|--help] [-r|--remove_snapshots [VolumeGroupName]] [-v|--verbose]

DESCRIPTION

       vgscan scans all SCSI, (E)IDE disks, multiple devices and a bunch of other disk devives in the system for volume groups defined.

   OPTIONS
       -d, --debug
	      Enables additional debugging output (if compiled with DEBUG).

       -f, --forcenumbers
	      If  used	volume group and/or logical volume minor numbers are found during scan, replace them. This will potentially cause problems
	      for NFS exported filesystems on logical volumes with changed numbers.

       -h, --help
	      Print a usage message on standard output and exit successfully.

       -r, --remove_snapshots [VolumeGroupName]
	      Remove all snapshot logical volumes from all or just the named volume group.

       -v, --verbose
	      Display verbose information of vgscan's activities.

Hint
       Put vgscan in one of your system startup scripts.  This gives you an actual logical volume manager database before  activating  all  volume
       groups by doing a "vgchange -ay".

DIAGNOSTICS

       vgscan returns an exit code of 0 for success and > 0 for error:

       1  error reading physical volumes
       2  error inserting vokume group name into lvmtab
       3  no volume group(s) found
       4  error creating lvmtab
       5  no or not enough free device specials to store volume group in lvmtab
       6  error storing VGDA on disk(s)
       7  reused LV device number
       8  error releasing snapshot logical volume

       95 driver/module not in kernel
       96 invalid I/O protocol version
       97 error locking logical volume manager
       99 invalid command line

See also
       lvm(8), vgcreate(8), vgchange(8)

AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen						     LVM TOOLS								 VGSCAN(8)

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

NAME

       vgrename - rename a volume group

SYNOPSIS

       vgrename  [-A|--autobackup{y|n}]  [-d|--debug]  [-h|--help]  [-v|--verbose] { OldVolumeGroupPath NewVolumeGroupPath | OldVolumeName NewVol-
       umeGroupName }

DESCRIPTION

       vgrename renames an existing (see vgcreate(8) ) volume group.

   OPTIONS
       -A, --autobackup y/n
	      Controls automatic backup of VG metadata after the change ( see vgcfgbackup(8) ). Default is yes.

       -d, --debug
	      Enables additional debugging output (if compiled with DEBUG).

       -h, --help
	      Print a usage message on standard output and exit successfully.

       -v, --verbose
	      Gives verbose information about vgrename's activities.

Examples
       "vgrename /dev/vg02 /dev/my_volume_group" renames existing volume group "vg02" to "my_volume_group".

       "vgrename vg02 my_volume_group" does the same.

DIAGNOSTICS

       vgrename returns an exit code of 0 for success and > 0 for error:

       1  new volume group directory for device special files already exists
       2  old volume group directory for device special files doesn't exist
       3  new volume group name is invalid
       4  old volume group name is invalid
       5  error checking existence of old volume group
       7  volume group names are identical
       8  new volume group already exists
       9  error reading VGDA
       10 error removing old VGDA from kernel
       11 error removing old VGDA from lvmtab
       12 error removing device special files for old volume group
       13 error creating device special files for new volume group
       14 error inserting new volume group name into lvmtab
       15 error backinp up VGDA
       16 error writing VGDA to lvmtab
       17 error renaming volume group in kernel

       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

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), vgchange(8), vgcreate(8), lvrename(8)

AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen						     LVM TOOLS							       VGRENAME(8)