Imports a new volume group definition from a set of physical volumes.
importvg [ -V MajorNumber ] [ -y VolumeGroup ] [ -f ] [ -c ] [ -x ] | [ -L VolumeGroup ] [ -n ] [ -F ] PhysicalVolume
Attention: You may import an AIX Version 3.2 created volume group into an AIX Version 4 system, and you may import an AIX Version 4 volume group into an AIX Version 3.2 system, provided striping has not been applied. Once striping is put onto a disk, its importation into Version 3.2 is prevented.
Attention: When you issue the importvg command to a previously defined volume group, the QUORUM and AUTO ON values will be reset to volume group default values. You should verify the parameters of the newly imported volume group with the lsvg command and change any values with the chvg command.
The importvg command makes the previously exported volume group known to the system. The PhysicalVolume parameter specifies only one physical volume to identify the volume group; any remaining physical volumes (those belonging to the same volume group) are found by the importvg command and included in the import. An imported volume group is not automatically varied on. You must use the varyonvg command to activate the volume group before you access it.
When a volume group with file systems is imported, the /etc/filesystems file is updated with values for the new logical volumes and mount points. After importing the volume group and activating it with the varyonvg command, you must run the fsck command before the file systems can be mounted. However, the mount point information would be missing from the LVCB (logical volume control block) if it is longer than 128 characters. In this case, the importvg command will not be able to update the /etc/filesystems file with the stanza for the newly imported logical volume. You should manually edit the /etc/filesystems file to add a new stanza for this logical volume.
The importvg command changes the name of a logical volume if the name already exists in the system. It prints a message and the new name to standard error, and updates the /etc/filesystems file to include the new logical volume name.
Notes:
- To use this command, you must either have root user authority or be a member of the system group.
- AIX Version 4 changed the behavior of importvg so that as part of the importvg process, the volume group is automatically varied on by the system after it is imported. However, if the volume group is Concurrent Capable or was imported with the -c flag, then the importvg command prompts you to varyonvg the imported volume group manually.
You can use a Web-based System Manager Volumes application (wsm lvm fast path) to run this command. You could also use the System Management Interface Tool (SMIT) smit importvg fast path to run this command.
Attention: This entry must be added after the entry used to initiate srcmstr.
importvg -y bkvg hdisk07
Node A has the volume group datavg varied on. Node B is aware of datavg, but it is not varied on. Node A: varyonvg -b -u datavg Node B: importvg -L datavg hdisk07 Node A: varyonvg datavg
/usr/sbin | Directory where the importvg command resides. |
/tmp | Directory where the temporary files are stored while the command is running. |
The exportvg command, varyonvg command.
The Logical Volume Storage Overview in AIX Version 4.3 System Management Guide: Operating System and Devices explains the Logical Volume Manager, physical volumes, logical volumes, volume groups, organization, ensuring data integrity, and allocation characteristics.
Setting up and running Web-based System Management in AIX Version 4.3 System Management Guide: Operating System and Devices.
The System Management Interface Tool (SMIT): Overview in AIX Version 4.3 System Management Guide: Operating System and Devices explains the structure, main menus, and tasks that are done with SMIT.
AIX HACMP/6000 Concepts and Facilities.