[CentOS] Resizing est4 filesystem while mounted

Ray Van Dolson

rayvd at bludgeon.org
Fri Jun 15 19:22:08 UTC 2012

On Fri, Jun 15, 2012 at 12:10:09PM -0700, Jeff Boyce wrote:
> Greetings -
> I had a logical volume that was running out of space on a virtual machine. 
> I successfully expanded the LV using lvextend, and lvdisplay shows that it 
> has been expanded.  Then I went to expand the filesystem to fill the new 
> space (# resize2fs -p /dev/vde1) and I get the results that the filesystem 
> is already xx blocks long, nothing to do.  If I do a # df -h, I can see that 
> the filesystem has not been extended.  I could kick the users off the VM, 
> reboot the VM using a GParted live CD and extend the filesystem that way, 
> but I thought that it was possible to do this live and mounted?  The RH docs 
> say this is possible; the man page for resize2fs also says it is possible 
> with ext4.  What am I missing here?  This is a Centos 6.2 VM with an ext4 
> filesystem.  The logical volumes are setup on the host system which is also 
> a Centos 6.2 system.

Try resize4fs (assuming your FS is ext4).


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