pvdata(8) [redhat man page]

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

NAME

       pvdata - shows debugging information about a physical volume

SYNOPSIS

       pvdata	[-a|--all]   [-d|--debug]   [-h|--help]  [-E|--physicalextent]	[-L|--logicalvolume]  [-P[P]|--physicalvolume  [--physicalvolume]]
       [-U|--uuidlist] [-V|--volumegroup] [-v[v]|--verbose [--verbose]] PhysicalVolumePath [PhysicalVolumePath...]

DESCRIPTION

       pvdata allows you to display the volume group descriptor array (VGDA) of PhysicalVolume in part or whole for debugging purposes.

   OPTIONS
       -a, --all
	      Display all structures (PE, LV, PV, UUID, VG).  The same as giving the -E -L -P -U -V options.

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

       -E, --physicalextent
	      Display physical extent structures.

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

       -L, --logicalvolume
	      Display logical volume structures.

       -P, --physicalvolume
	      Display physical volume structure in pvdisplay format.  If given a second time, also display the on-disk LVM metadata locations.

       -U, --uuidlist
	      Display the volume group UUID list.

       -v, --verbose
	      Display verbose structure information.  If given a second time, verbose runtime  information  about  pvdata's  activities  are  also
	      shown.

       -V, --volumegroup
	      Display volume group structure.

       --version
	      Display the version and exit successfully.

DIAGNOSTICS

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

       1  no physical volume name on command line

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

SEE ALSO

       lvm(8), lvcreate(8), lvmdiskscan(8), pvcreate(8), vgcreate(8),

AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen						     LVM TOOLS								 pvdata(8)

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

NAME

       vgsplit - split a volume groups

SYNOPSIS

       vgsplit	[-A|--autobackup  {y|n}] [-d|-ebug] [-h|--help] [-l|--list] [-t|--test] [-v|--verbose] [--version] ExistingVolumeGroupName NewVol-
       umeGroupName PhysicalVolumePath [PhysicalVolumePath...]

DESCRIPTION

       vgsplit moves one or more PhysicalVolumePath(s) from ExistingVolumeGroupName into NewVolumeGroupName.  Physical volumes that are split  off
       to  the	new volume group must not contain any partial logical volumes.	Use pvmove(8) to move logical volumes to the desired physical vol-
       umes.

   OPTIONS
       -A, --autobackup {y|n}
	      Controls automatic backup of VG metadata after the merge (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.

       -l, --list
	      Display split volume group names like vgdisplay -v.

       -t, --test
	      Do a test run WITHOUT any real changes.

       -v, --verbose
	      Display verbose runtime information about vgsplit's activities.

       --version
	      Display tool and IOP version and exit successfully.

EXAMPLE

       To separate physical volumes /dev/sdk1 and /dev/sdn1 from the existing volume group databases and put them into new volume group my_vg.

	    vgsplit -v databases my_vg /dev/sdk1 /dev/sdn1

DIAGNOSTICS

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

       1  invalid volume group name
       2  invalid physical volume name
       3  malloc error
       4  error reading VGDA of existing volume group
       5  new volume group already exists
       6  error setting up VGDA for split
       7  logical volume to be split into new volume group must be inactive
       8  logical volume doesn't exist
       9  error removing logical volume from kernel
       10 error reducing VGDA by physical volume in kernel
       11 error writing changed existing VGDA to physical volume(s)
       12 error writing new VGDA to physical volume(s)
       13 error creating device special files for changed existing volume group
       14 error creating device special files for new volume group
       15 error creating new VGDA in kernel
       16 error inserting new volume group name into lvmtab

       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), vgcreate(8), vgextend(8), vgreduce(8), vgmerge(8), pvmove(8)

AUTHOR

       Heinz Mauelshagen <Linux-LVM@Sistina.com>

Heinz Mauelshagen						     LVM TOOLS								VGSPLIT(8)