[mythtv] FileSystem to use for Myth (was Re:Channel change sp eed)

[Steele Price]

I have all my critical data on XFS, including my 1.2 terrabyte fileserver
that is used for music and video storage.

Mine happens to be setup in 2 raid5 arrays but I have had 0 data loss
after several power outages from moving things around, bad switches
sending the system into constant hard reboots and heat problems with
having 8 drives in a small space before I got a new case.

Also, on my frontend, the /var folder where all the recordings are being
stored is XFS because I trust it and know it's fast.  I am one of those
people still scared of reiser :)

I am running debian unstable exclusively with 2.4.21-ck3 kernel on the
front end and 2.4.21 vanilla+3ware,ieee1394 and XFS cvs builds along with
some server tweaks on the file server.

I have had some 3ware issues where it would loose a drive that overheated
and have to rebuild the array (maybe 5 times) and all went fine with no
data loss.  I have also upgraded the drives on the controllers with no
issues, so from a practical point I can certainly recommend it from my
experience.  For me, XFS has been extremely reliable and fast, and that is
why I stick with it rather than trying out reiser or something else.

Steele Price
CTO
Digital Dreamshop
http://xtcp.net

> Knock on wood, but I haven't had any XFS corruption issues. I've been
> running it since 1.0.1 I think. Here's two of my biggest and most
> heavily used filesystems (both XFS of course):
>
> Filesystem           1K-blocks      Used Available Use% Mounted on
> /dev/evms/vol01      136298492 113709516  22588976  84% /vol01
> /dev/evms/vol02      1966269436 1519769176 446500260  78% /vol02
>
> Both have survived numerous hard power offs (the northeast blackout for
> one) and always comes back up without skipping a beat.
>
> Everyone seems to know "someone" who has had XFS corruption it seems. I
> won't dispute that, but I will just say that my experience has been just
> the opposite.
>
> Oh, and that machine is running 2.4.21-xfs currently.
>
> Hope that helps.
>
> Dave
>
> On Mon, 2003-09-15 at 16:27, Boyd II, Willy wrote:
>> If I'm reading this correctly, it looks as though XFS is pretty good on
>> large file performance.  Does anyone here have any experience using it
>> with
>> heavy load, for instance with Mythtv?
>>
>> - Willy
>>
>> -----Original Message-----
>> From: Renchi Raju [mailto:renchi at pooh.tam.uiuc.edu]
>> Sent: Friday, September 12, 2003 1:27 PM
>> To: Development of mythtv
>> Subject: Re: [mythtv] FileSystem to use for Myth (was Re:Channel change
>> speed)
>>
>>
>> oops, forgot to mention that the system is a dual-processor athlom-mp
>> (1900+) machine running debian testing/unstable with kernel 2.4.22 (with
>> xfs patches applied).
>>
>> renchi
>>
>> On Fri, 12 Sep 2003, Renchi Raju wrote:
>>
>> >
>> > i just did a small benchmark on the filesystems on my machine using
>> > bonnie++ (for reading and writing 1G files). the results are attached
>> with
>> > this mail.
>> >
>> > these tests were run with as follows:
>> > bonnie++ -s 1g -n 0 -f
>> >
>> > renchi
>> >
>> > Disclaimer: this is a very unscientific test. do your own benchmarks
>> > and form your own opinion if you don't agree with the results or the
>> > methodology.
>> >
>> > > Message: 18
>> > > Date: Fri, 12 Sep 2003 11:56:55 -0400
>> > > From: Will Dormann
>> > > Subject: RE: [mythtv] Re:Channel change speed
>> > >
>> > > I just switched my store from ext3 to reiserfs, and I
>> > > like the change!
>> > > Channel changing time is significantly faster, and
>> > > deleting recordings
>> > > is
>> > > much faster too.
>> > >
>> > > Maybe this should be put in the documentation
>> > > somewhere.  I remember
>> > > researching which filesystem to use at the time I was
>> > > setting up my
>> > > MythTV
>> > > machine, and I couldn't find any definitive answer as
>> > > to which would be
>> > > better in the case of a PVR.
>> > >
>>
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>>
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