JFS in Ubuntu

[Rashkae]

Dotan Cohen wrote:
> On the Ubuntu Unlashed blog, it has been suggested that users use the
> jfs filesystem a opposed to ext3:
> http://www.ubuntu-unleashed.com/2008/10/upgrade-from-hardy-heron-to-ubuntu.html
> 
> Is this bad avice? Any gotchas?
> 

I've run into several bugs in the past with JFS, from minor data
corruption to corner cases that cause severe performance penalties.  The
minor data corruption was only metadata and easily fixed with the
jfsrepair utility, but I'm leary of journaled filesystems that need repair.

The simple truth is, JFS just doesn't have the exposure of wide
deployment, and therefore, gotchas can go several kernel versions
unnoticed.  And I'm very skeptical of the claim by the article writer
that he noticed such a performance improvement.  JFS does have very high
performance and performs well on benchmarks, but there really shouldn't
be such a big difference to the user experience on typical desktop loads.