Quantum 3.1.3 User Manual

Using the Dynamic Resource Allocation Feature

StorNext User’s Guide

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Run snfsdefrag -G <n> -m 0 -r /filesystemroot
where <n> is the zero-based number of the source stripe group from 

which the move starts, and filesystemroot is the file name of the file 

system tree’s root. You can specify multiple -G options to use 

multiple source stripe groups.

Verify that no data remains on the original stripe groups.

Edit the file system configuration to mark the old stripe groups as 

“Down.”

Stop the FSM.

Restart the FSM.

2

Metadata movement is performed on a LUN level, meaning you must 

specify the source LUN and the destination LUN. The new sndiskmove 

command that accomplishes metadata movement has two arguments: a 

source and destination LUN. 
After movement is complete, the physical source disk can be removed.

The old stripe groups marked “Down/Readonly” must be 

left in the file system configuration file.

Although a stripe group can consist of multiple disks or LUNs, 

the sndiskmove command moves only a single disk or LUN. 

Consequently, references to “stripe group” in this section refer 
to a single disk or LUN when migrating metadata with 
sndiskmove

.