Quantum 3.5.1 User Manual

Using the Dynamic Resource Allocation Feature

StorNext User’s Guide

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Before you use a Dynamic Resource Allocation feature, Quantum 

strongly recommends running the cvfsck command on the file system 

you will be using. This step could take a considerable amount of time to 

complete, but your file system should be in good condition before you 

attempt to expand it or move stripe groups.

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Use the following procedure to expand the file system by adding a stripe 

group, and not migrating.

Label disks for the new stripe groups you want to add to the file 

system.

If your StorNext configuration includes a failover environment, you 

must first shut down any standby FSMs that would start when you 

shut down the primary FSM. The movement procedure will not 

complete successfully unless all FSMs are shut down.

(Optional) Run the cvfsck command on the file system. See 

.

Add the new stripe groups to the file system.

Stop the File System Manager (FSM).

When you add a new disk or stripe group to your SAN, 

often an OS-dependent operation must be run to make the 

added device recognizable by a host. Some of these 

utilities can disrupt access to existing disks, causing access 

hangs or failures. To avoid this, stop all file system 

operations on the affected host before rescanning for the 

new device.

If you do not run the cvfsck command to check your file 

system before attempting file system expansion, 

irreparable file system damage could occur. 

If you do not shut down standby FSMs, file 

system corruption or data loss could occur.