How can I reduce or shrink the size of a GFS or GFS2 filesystem on RHEL 5,6,7,8,9?
Environment
- Red Hat Enterprise Linux Server 5,6,7,8,9 (with the High Availability and Resilient Storage Add Ons)
Issue
- How can I reduce or shrink the size of a
GFS
orGFS2
filesystem? - How to resize a GFS2 filesystem to a lower size?
Resolution
A GFS
or GFS2
cannot be shrunk to a smaller size. There is no supported tool that will shrink a GFS
or GFS2
filesystem after it is created with mkfs.gfs2
.
- The only way to decrease a
GFS
orGFS2
filesystem is to do the following;- Create a new
GFS
orGFS2
filesystem to your preferred size. - Copy the contents of the original
GFS
orGFS2
filesystem to the newGFS
orGFS2
filesystem.
- Create a new
Root Cause
- Red Hat Enterprise Linux does not provide a command which can be used to reduce the size of a
GFS
orGFS2
filesystem.
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