Evacuating Segments And Removing Storage From The Cluster - HP StoreAll 9730 Administrator's Manual

The following command migrates ownership of segments ilv2 and ilv3 in file system ifs1 to
server2:
ibrix_fs -m -f ifs1 -s ilv2,ilv3 -h server2
Migrate ownership of all segments owned by specific servers:
ibrix_fs -m -f FSNAME -H HOSTNAME1,HOSTNAME2 [-M] [-F] [-N]
For example, to migrate ownership of all segments in file system ifs1 from server1 to server2:
ibrix_fs -m -f ifs1 -H server1,server2

Evacuating segments and removing storage from the cluster

Before removing storage used for a StoreAll software file system, you will need to evacuate the
segments (or logical volumes) storing file system data. This procedure moves the data to other
segments in the file system and is transparent to users or applications accessing the file system.
When evacuating a segment, you should be aware of the following restrictions:
While the evacuation task is running, the system prevents other tasks from running on the file
system. Similarly, if another task is running on the file system, the evacuation task cannot be
scheduled until the first task is complete.
The file system must be quiescent (no active I/O while a segment is being evacuated). Running
this utility while the file system is active may result in data inconsistency or loss.
To evacuate a segment, complete the following steps:
1. Identify the segment residing on the physical volume to be removed. Select Storage from the
Navigator on the GUI. Note the file system and segment number on the affected physical
volume.
2. Locate other segments on the file system that can accommodate the data being evacuated
from the affected segment. Select the file system on the GUI and then select Segments from
the lower Navigator. If segments with adequate space are not available, add segments to the
file system.
3. Evacuate the segment. Select the file system on the GUI, select Segments from the lower
Navigator, and then click Rebalance/Evacuate on the Segments panel. When the Segment
Rebalance and Evacuation Wizard opens, select Evacuate as the mode.
Managing segments 125