4-3 deleting a file system, 5 creating and deleting device files, 5-1 creating a device file – HP StorageWorks XP48 Disk Array User Manual
Page 48: Deleting a file system, Creating and deleting device files, Creating a device file, Section, Figure 3-10
Using Provisioning Manager 48
Figure 3-10
Relationship Between Host File System/Device File and Subsystem LU (Expanding a File System)
3-4-3 Deleting a File System
Once you specify the file system you wish to delete, Provisioning Manager can automatically perform the
process of deleting the file system. The mount point specified by the user during the file system creation is not
deleted.
Note that this operation performs only the host-side operations; it does not remove the paths on the subsystem
side (it does not release LUNs), it does not release any LUSEs, nor does it release any volumes (LDEVs).
Therefore, the user must manually delete (unallocate) the volumes from the list or modify the Device Manager
security settings.
When you delete a file system, if a volume group has been created for the volume on which the file system
being deleted resides, the logical volume being used is deleted. Further, if the logical volume being deleted is
the last volume in the volume group, all of the physical volumes (LUs) configuring that volume group are
removed from that volume group, and the volume group is deleted.
3-5 Creating and Deleting Device Files
Creating a device file on a volume (LU) allocated to a host and deleting that device file can each be performed
from a management client in a single operation.
3-5-1 Creating a Device File
Once you specify a host and select a volume (LU) from among the volumes allocated to that host, Provisioning
Manager can automatically perform the process of creating a device file on that volume. This function is used
when you need only to create a device file on the volume, such as when the volume is being used for a
database, without having to create a file system.
As with the process of creating a file system, the process of creating a device file differs depending on whether
HDLM path management software is installed on the host, and on whether a volume manager is to be used to
manage the device file being created. Accordingly, whether to use HDLM and a volume manager differs
depending on whether the volume underlying the device file is a raw device associated with an LU, a created
HDLM device, or a created logical device.