This topic describes how to reassign filesets to another metadata
server in the SAN File System cluster.
Context
Any filesets managed by this metadata server engine will be unavailable
to clients while the engine is being upgraded. If it is important to maintain
the availability of the filesets during the upgrade process, you will need
to reassign the filesets to another metadata server in the cluster.
Note: Before
reassigning filesets, you should close down any client applications that use
those filesets until after the reassignment is complete.
Steps
- From the master metadata server, list all of the filesets assigned
to the metadata server to be upgraded.
/usr/tank/admin/bin/tanktool lscontainer -server metadata_server_name
- Assign the filesets to different metadata server.
/usr/tank/admin/bin/tanktool setcontainerserver -server new_metadata_server_name
fileset1 fileset2 fileset3
Result
There are two phases of the cluster transition when moving
a fileset. The end of the first phase shows the server online, but some administrative
commands will not function until the second phase completes. The second phase
finishes when the new filesets are assigned and running. This normally takes
less than one minute.