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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)

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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)
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