[mythtv-users] CentOS vs Fedora, RAID vs LVM

[Bobby Gill]

On Sat, Mar 28, 2009 at 8:48 PM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> Hi
>
> 2009/3/29 Bobby Gill <bobbygill at rogers.com>:
> > Your high recommendation for JFS has me intrigued. I've been a pretty
> > absent-minded, "default" ext3 user for some time now and haven't even
> really
> > thought of a FS change. I am really considering converting my recordings
> to
> > JFS now (just have to plan an overnight move of all the data to my
> external
> > drive beforehand, of course hehe). Would it be worth it to convert to JFS
> vs
> > ext3 for my recordings partitions? What are the benefits?
>
> Much lower CPU usage, much faster at handling big files, virtually
> unlimited size recordings (with the default 1kB block, ext3 has a
> limit of 16GB, I've had recordings well in excess of that size)
>
> You can grow the FS without even unmounting the disk...
>
> http://www.google.com.au/search?q=ext3+vs+jfs&ie=UTF-8
>
> JFS or XFS are just much better suited for mythtv is pretty much the
> conclusion of every one who analysed the pro and cons...
> http://linuxgazette.net/102/piszcz.html
>
> Now whether it's worth converting your existing FS I don't know ...
> but if you were to start from scratch it's a no brainer for me...
>

Thanks for that. Currently I only have about 315GB used of my 730GB
recordings LVM part. I am thinking I'll just plug in the external 1TB and
move all over to it (leave it to an overnight mv *), and then switch over to
JFS. I do recall reading something about XFS being  dangerous if your box
goes off in a power outage or something similar, I'm curious if that applies
to JFS as well?

Also, with a few smaller files (and the many .png preview thumbnails) that
will be in the recordings dir, do you find any issues with those (seeing as
JFS is champ for large files)??

Thanks
Bob
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