Motivation

How to rearrange filestorage of an IPBRICK.OS with IPortalDoc.

Ojectives

to separate DATA from Operating System (OS)
to allocate filestorage warehouse to a separate volume, a new volume that can grow dynamically
to allocate database binaries to a separate volume, a new volume that can grow dynamically, preferencially utilize faster disks

Before proceed we recommed you to read the Map new LVM section.

Overview of the procedure:

on-line - without stoping the services
- to prepare the new volumes (recommendation see MAP new LVM)
- initial and intermediate synchronizatione the contents from the old to the new volume
off-line - stop services and perform the final synchronization
- stop the services
- perform final synchronization of contents
- to replace mount point
- to restart services
validation and final maintenance
- validate that all services are performing as expected
- do system maintenance, clean data not used, free old space

For the purpose of this section, we will assume the existence of the following volumes:

/dev/sda :: operating system installation
- Volume Group : /dev/vgsystem1/ : lvdata1 lvos lvswap lvvar
/dev/sdb :: disk to be used by database binaries (postgresql)
- Volume Group : /dev/vgipdocdb/ : lvipdocdb [ext4]
/dev/sdc :: disk to be used by warehouse
- Volume Group : /dev/vgipdocarm/ : lvipdocarm [ext4]

For more information on the preparation of the new LVM volumes/filesystem please refer to MAP new LVM.

These steps may be executed with the system on-line, in production state.

These steps imply that service is not available, stop services for final synchronization.