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Full Discussion: LVM
Operating Systems Linux LVM Post 302598074 by mark54g on Monday 13th of February 2012 09:25:03 AM
Old 02-13-2012
Do you absolutely have to? You can simply create a partition on the other non-LVM space and then add it to the VG and then extend the LV. From there, you can either extend the file system within the LV or create more file systems.

Now, here's the bigger issue. If you have a 500GB drive in that server, it appears it is likely SATA or near-line SAS, and has no redundancy. If it is as critical as it may appear, with your reluctance to rebuild it, I suggest you form a plan to migrate to either another server or make some contingency plan for disk failure. Disks failures will happen and more than likely, at an inopportune time.

What you COULD do is to create a virtual machine within the LVM space, and migrate services off to it at your leisure. Then, when you have that done, migrating a VM to another host with better redundancy is relatively trivial.
 

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

NAME
dtc_kill_vps_disk - destroy LVM disks for freeing space SYNOPSIS
dtc_kill_vps_disk VPS_NUMBER [ lvm|loopback ] DESCRIPTION
dtc_kill_vps_disk This shell script is a part of the dtc-xen package that is to be used by the dtc panel to manage a Xen VPS server. This script is used to delete a partitions that was used by a VPS. It will delete the normal partition that was used as a root disk, and the swap partition. dtc_kill_vps_disk is to be used by the dtc-xen SOAP server, but can also be used as a standalone userland tool. OPTIONS
VPS_NUMBER has to be a number between 01 and 19. Let's say the number is 16, and that dtc-xen is configured to use the volume group called lvm1, then this script will create /dev/lvm1/xen16 and /dev/lvm1/xen16swap. IMAGE_TYPE This parameter can have 2 values: either lvm or loopback. If ommited, then lvm is used. If lvm is used, then this script will create a partition using lvmcreate, otherwise it will create an image file. Both will later be used for the VPS. EXAMPLE
dtc_setup_vps_disk 04 lvm This will delete the 2 LVM partitions that were used by the VPS named xen04, the first one being the root partition, and the second one being the swap partition. VERSION
This documentation describes dtc_kill_vps_disk See http://www.gplhost.com/software-dtc-xen.html for updates. SEE ALSO
dtc_reinstall_os(8), dtc_setup_vps_disk(8) dtc_kill_vps_disk(8)
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