[mythtv-users] What is best filesystem for recordings?

[Richard Shaw]

On Tue, Jun 30, 2015 at 8:26 AM, Tim Draper <veehexx at zoho.com> wrote:

> i tried BTRFS about 9 months ago but found it to struggle under load. i
> moved from btrfs to jfs/xfs (i forget which) and it was a very noticeable
> improvement. I was having some BTRFS performance issues which i assumed was
> down to the mythtv media partition. I suspect i used XFS as i don't think
> JFS is natively out-the-box supported under Fedora which i now use.
> Currently on ext4 that I've had 4 streams going to it (3x HD record, 1x HD
> livetv) and it didnt have any obvious visuals issues. 2disk mdadm raid1,
> LVM with 3x ext4 partitions.


I'm not sure which Fedora release started support for JFS but it has been
there for quite some time...

Adding my own $.02... Back when I only had a 500GB recording drive and a
2-tuner HDHR ATSC tuner I tried XFS, JFS, and EXT4 but I couldn't tell any
difference, my system simply wasn't demanding enough to matter, so I
settled on EXT4 since it's the default for Fedora.

I now have a 2TB recording drive and added a 3 tuner HDHR Prime... Still on
the recording side not very demanding, I don't have a bunch of simultaneous
recordings but one thing I have noticed is a large lag (up to 10 seconds?)
of lag between when I hit play and the recording actually starts playing.

It's annoying but not bad enough to take drastic measures but it would be
nice to know if changing file system types would fix this.

Thanks,
Richard
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