Managing the AMASS File System

After the volcomp process completes, the original volume is without data so AMASS marks it Inactive in the File System Database. To reuse the volume, format it with the volformat command.

Volume number 49 has a lot of dead space.

Dead Space

Dead Space

File2

Source Volume 49

AMASS rewrites File2 to volume number 50, which is in the same volume group as volume 49.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

File5

 

 

 

 

 

 

 

 

 

 

 

 

 

File6

 

File7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Target Volume 50

Prerequisites

Before using this command:

Mark the target volume Active with the volstat command.

Mark the volume group for Reads and Writes with the vgreadonly -wvolumegroup command.

There must be enough free space in the volume group to rewrite all data from the source volume.

You must have at least one available drive.

Run volcomp during off-hours.

For better performance, run this command on a volume group when no other activity is taking place on the specified volume group.

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Command Reference

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