[Linux-cluster] gfs2 v. zfs?

[Gordan Bobic]

Wendy Cheng wrote:

> GFS2 fragments very soon and very badly ! Its blocks are all over the 
> device due to the nature of how the resource group works. That slows 
> down *every* thing, particularly for backup applications. A production 
> deployment will encounter this issue very soon and they'll find the 
> issue more than annoying.

While I don't disagree that it's a problem, most people will use GFS and 
similar FS-es on a SAN. A typical SAN will allocate sparse files for 
backing the block device. That means it'll be badly fragmented very 
quickly on the back end regardless of what the FS does.

Gordan