6.0 HP X9320 Network Storage System Administrator Guide (AW542-96009, December 2011)

<installdirectory>/bin/ibrix_fs -m -f FSNAME -H HOSTNAME1,HOSTNAME2 [-M] [-F] [-N]
For example, to migrate ownership of all segments in file system ifs1 that reside on s1.hp.com
to s2.hp.com:
<installdirectory>/bin/ibrix_fs -m -f ifs1 -H s1.hp.com,s2.hp.com
Removing a node from the cluster
Use the following procedure to remove a node from the cluster:
1. If the node is hosting a passive management console, go to step 2. If the node is hosting the
active management console, move the management console to maintenance node:
ibrix_fm -m maintenance
2. On the node hosting the active management console, unregister the node to be removed:
ibrix_fm -u server_name
3. Uninstall the X9000 software from the node.
./ibrixinit -u
This command removes both the file serving node and management console software.
The node is no longer in the cluster.
Removing storage from the cluster
Before removing storage that is used for an X9000 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:
• Segment evacuation uses the file system rebalance operation. While the rebalance task is
running, the system will prevents tasks from running on the same file system. Similarly, if
another task is running on the file system, the rebalance task cannot be scheduled until the
first task is complete.
• You cannot evacuate or remove the root segment (segment #1).
• 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.
• If quotas are enabled on the affected file system, the quotas must be disabled during the
rebalance operation.
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 management console 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 management console GUI and then
select Segments from the lower Navigator. If segments with adequate space are not available,
add segments to the file system.
3. If quotas are enabled on the file system, disable them:
ibrix_fs -q -D -f FSNAME
4. Evacuate the segment. Select the file system on the management console GUI and then select
Active Tasks > Rebalancer from the lower Navigator. Select New on the Task Summary page.
When the Start Rebalancing dialog box appears, open the Advanced tab. Check Evacuate
source segments and note the cautions that are displayed. In the Source Segments column,
select the segments to evacuate, and in the Destination Segments column, select the segments
70 Maintaining the system