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vgchange(8) System Manager's Manual vgchange(8) NAME vgchange - Sets the availability of a volume group to yes or no SYNOPSIS /usr/sbin/vgchange -a Availability [-lps] VolumeGroupName DESCRIPTION This command is no longer supported on Digital UNIX systems. Features formerly provided by the Logical Volume Manager (LVM) are now provided by the Logical Storage Manager (LSM). Existing LVM volumes must be mi- grated to LSM, using an encapsulation process. For information about moving LVM volumes to LSM, see the vollvmencap(8) reference page and the manual Logical Storage Manager. The vgchange command activates or deactivates one or more volume groups. The change depends on the value specified by the -a flag; namely, y or n. The vgchange -a n command deactivates the VolumeGroupName and its asso- ciated logical volumes. You must close the logical volumes prior to in- voking the vgchange -a n command. For example, if the logical volume contains a file system, you must unmount the filesystem. The vgchange -a y command activates the VolumeGroupName, and all asso- ciated physical and logical volumes. When a volume group is activated, it is available for use, its logical volumes are available, and its physical extents are synchronized (if they are stale). However, if you included the -s flag on the command line, synchronization does not oc- cur. If the program can not access a physical volume, it lists the volume's status as missing. If too many physical volumes in the volume group are missing, the program notifies you that the group does not have a quorum and cannot be activated. The -p flag allows you to acti- vate the volume group only if all of the physical volumes belonging to the volume group are available. If the -l flag is set, later attempts to open the logical volumes will fail. To make an open of these logi- cal volumes succeed, the command lvchange -a y must be executed. FLAGS Sets the availability of the volume group. The Availability parameter is represented by one of the following: Makes a volume group available. Makes a volume group temporarily unavailable. Disables the open of the logical volumes that belongs to the volume group. Activates the volume group only if all of the physical volumes that belong to it are avail- able. Disables the synchronization of the stale physical extents within the volume group specified with the VolumeGroupName parameter. This flag only makes sense when -a y is specified. EXAMPLES To activate the volume group vg03, enter: vgchange -a y /dev/vg03 To deactivate the volume group vg03, enter: vgchange -a n /dev/vg03 To ac- tivate volume group vg03 without synchronizing extents that are not current, enter: vgchange -a y -s /dev/vg03 FILES Specifies the command path RELATED INFORMATION Commands: vgcreate(8), umount(8), vgdisplay(8), vgextend(8), vgre- duce(8) delim off vgchange(8)