[linux-audio-user] Journaling filesystems [was: Ardour Crash + can't boot]

[Jan Depner]

I would be willing to bet that XFS might be even better than reiserfs
but I have no data on that.  Mark Knecht documented the responses of the
different filesystems using Benno Senoner's Latency Test program.  I
have the results on my site at:

http://myweb.cableone.net/eviltwin69/Arcana.html


My own (totally unscientific) results are also commented on there.


Jan


On Mon, 2004-04-26 at 12:40, Maarten de Boer wrote:
> > If you're going to rebuild use ext3 instead of ext2 for the root
> > partition.  It's journalled.  Use Reiserfs for the data partition.  The
> 
> What is the reason for using two different filesystems here? Is reiserfs
> more suitable for (audio) data?
> 
> Personally, I am using xfs (also journalled) for all workstations I
> install, after having used it successfully on a heavy duty fileserver
> for more than 2 years. It never gave me any problems, and I have done
> some nasty tests.
> 
> Now, I have never run Ardour - on top of my TODO list for a looong time
> :-), so I can't say how Ardour and xfs play together, but I'd be surprised
> if there are any problems. Anyway, I would be very much interested to hear
> if others are using xfs, and how it behaves under heavy multitrack audio
> IO.
> 
> Ah, and xfs has a special "realtime" mode. From the kernel configuration:
> 
>   If you say Y here you will be able to mount and use XFS filesystems
>   which contain a realtime subvolume. The realtime subvolume is a
>   separate area of disk space where only file data is stored. The
>   realtime subvolume is designed to provide very deterministic
>   data rates suitable for media streaming applications.
> 
> which sounds very interesting. BUT!:
>  
>   This feature is unsupported at this time, is not yet fully
>   functional, and may cause serious problems.
> 
> Serious problems... Hmm, looking at Aaron's mail, he already got
> enough serious problems even without experimental xfs features...
> 
> xfs is in kernel 2.6.x, and has been included in 2.4.25 as well.
> (before that, sgi provides patches)
> 
> maarten