6.0 HP X9720 Network Storage System Administrator Guide (AW549-96034, December 2011)

on the physical segment itself, and the ownership data is part of the metadata that the management
console distributes to file serving nodes and X9000 clients so that they can locate segments.
Migrating specific segments
Use the following command to migrate ownership of the segments in LVLIST on file system FSNAME
to a new host and update the source host:
<installdirectory>/bin/ibrix_fs -m -f FSNAME -s LVLIST -h HOSTNAME [-M] [-F] [-N]
To force the migration, include -M. To skip the source host update during the migration, include
-F. To skip host health checks, include -N.
The following command migrates ownership of ilv2 and ilv3 in file system ifs1 to s1.hp.com:
<installdirectory>/bin/ibrix_fs -m -f ifs1 -s ilv2,ilv3 -h s1.hp.com
Migrating all segments from one host to another
Use the following command to migrate ownership of the segments in file system FSNAME that are
owned by HOSTNAME1 to HOSTNAME2 and update the source host:
<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:
Removing a node from the cluster 71