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Operating Systems AIX VIOS: Extend virtual disk assigned to running lpar? Post 302913695 by j_aix on Tuesday 19th of August 2014 12:13:17 PM
Old 08-19-2014
VIOS: Extend virtual disk assigned to running lpar?

Hello,

VIOS 2.2.1.4 using IVM.

I'm trying to extend a virtual disk assigned to a running lpar so that I can expand the lpar's datavg and grow some filesystems for the user.

Storage admin expanded the lun and new size was reflected in VIO right away. I then needed the storage pool to reflect the new size which I accomplished using:
Code:
chvg -chksize vgname

With storage pool showing new free space, I was looking for a command to extend the virtual disk assigned to the storage pool, which I had no luck. Instead I tried using IVM to extend the virtual disk, however I got a warning about the virtual disk assigned to a running partition.

You will either need to restart the partition after extending the size, or reconfigure the device using the partition's operating system. If you would like to proceed anyway, select the checkbox below, and select OK again. Force extend on running partition.

I'd like to attempt this without shutting down the lpar, however I can't risk a production outage either. Does anyone know the implications of using the "Force extend" option?
 

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vxinstall(1M)															     vxinstall(1M)

NAME
vxinstall - menu-driven Veritas Volume Manager initial configuration procedure SYNOPSIS
vxinstall DESCRIPTION
The vxinstall utility provides a menu driven interface to configure Veritas Volume Manager (VxVM). If you install the Veritas Volume Man- ager software package using the operating system's package administration commands, you can run vxinstall to configure VxVM for initial use on your system. Note: If you use the Veritas software installation scripts, do not run this utility. OPERATIONS
Licensing vxinstall first asks if you want to view the Veritas licenses already installed on the system. Answering "yes" is equivalent to exe- cuting the vxlicrep command (see vxlicrep(1)). You are then asked if you want to add licenses for other Veritas products. Answering "yes" is equivalent to running the vxlicinst command (see vxlicinst(1)). and entering a license key. Enclosure-Based Naming You can choose whether you want to use disk access names that are based on the device names assigned by the operating system, or that are based on names that you assign to enclosures. System-Wide Default Disk Group You can enter the name for the default disk group (defaultdg). This is an alias for the disk group name that should be assumed if the -g option is not specified to a command, or if the VXVM_DEFAULTDG environment variable is undefined. By default, defaultdg is set to nodg (that is, no disk group). NOTES
From release 4.0 of VxVM, it is no longer necessary to run vxinstall to configure the rootdg disk group. Disks and disk groups may be added to VxVM by running commands such as vxdiskadm(1M) or by using the graphical user interface without first running vxinstall. The operation of VxVM does not require any disk groups to have been configured, and a disk group named rootdg does not need to be present on the system. Any disk group may be configured as the default disk group that is to be used with VxVM commands. Any disk group named rootdg has no special significance to VxVM. See the vxdg(1M) manual page for further details. SEE ALSO
vxdctl(1M), vxdg(1M), vxdiskadm(1M), vxintro(1M), vxlicinst(1), vxlicrep(1) VxVM 5.0.31.1 24 Mar 2008 vxinstall(1M)
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