Operations Required For Devices To Be Managed By Hdlm; Deactivating The Md Devices; Deactivating The Volume Group - Hitachi XP P9500 User Manual

For details on how to re-install HDLM, see
HDLM on page
Performing an Upgrade Installation of HDLM on page

Operations Required for Devices to Be Managed by HDLM

Before performing an upgrade installation or re-installation of HDLM, you
must unmount the HDLM devices that correspond to HDLM-managed devices,
and then back up the HDLM-managed devices.
1 Terminate the processes of all applications that access the disks managed
.
by HDLM.
2 Unmount the HDLM devices.
.
If HDLM-managed devices have been mounted by specifying HDLM
devices, unmount them.
3 Back up the HDLM-managed disks (for example, to tape).
.
Perform this operation if necessary.

Deactivating the md Devices

You must deactivate any md devices that are being used before re-installing
or upgrading HDLM.
1 Execute the following command to deactivate the md devices:
.
# mdadm -S --scan
2 Execute the following command to make sure that the md devices have
.
been deactivated. In the following example, RAID1 (mirroring) is used:
# cat /proc/mdstat
Personalities : [raid1]
unused devices: <none>
Make sure that mdx : active is not displayed.

Deactivating the Volume Group

If you are using a logical volume on an HDLM device, you must deactivate the
volume group before re-installing or upgrading HDLM.
1 Unmount the logical volume on the HDLM device.
.
In the following example, the logical volume subject to the move has
been mounted on /mnt/lvol1:
# umount /mnt/lvol1
2 Deactivate the volume group.
.
In the following example, the logical volume subject to the move belongs
to the vg01 volume group:
# vgchange -an vg01
3-86. For details on how to upgrade-install HDLM, see
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide (for Linux(R))
Performing a Re-installation of
3-91.
3-85