[mythtv-users] EXT3 problems?

[Robert Dege]

Using larger inode chunks allows you to reclaim some disk space.  Since
you're assigning a single inode to every 4 megs instead of every 4 kb, you
reclaim space that would have previously been reserved for the additional
inode tables.

-Rob

> Along those lines, has anyone noticed any performance improvement by
> formatting their ext2/3 partitions with '-T largefile4', which should make
> one inode per 4meg?  And to repeat Zac's question, do reiser/xfs/jfs do
> anything similar?
>
> Or does this not even come into play when using options like noatime for
> ext3?
>
>
> ----- Original Message -----
> From: "Zachary S. Bedell" <zaclist at adirondack.net>
> To: "'Discussion about mythtv'" <mythtv-users at snowman.net>
> Sent: Tuesday, May 27, 2003 5:03 PM
> Subject: RE: [mythtv-users] EXT3 problems?
>
>
> > > It may be time to create a new FS for Media.  There is a
> > > reason that TiVo didn't use any of the standard FS's.
> >
> > I'm inclined to agree with that.  One of the benefits of TiVo's MFS
> > filesystem is that it allocates space in 512MB clusters.  With TiVo's
> usual
> > range of recording qualities, that amounts to about 30 minutes per
> > allocation.  It really cuts down on the amout of drive space and time
> wasted
> > in allocating things in (relatively) small cluster sizes that most
> normal
> > filesystems use.
> >
> > I wonder if ext[23] or reiser, jfs, or any of the other options
> supported by
> > current kernels can be formatted with huge cluster sizes?  Or failing
> that,
> > could they be easily and reliably hacked to do so?
> >
> > Unfortunately, I'm not even sure if the kernel could handle clusters
> that
> > large.  For TiVo's MFS, they implemented everything in userspace without
> any
> > help from the kernel, so who knows...
> >
> > Best regards,
> > Zac Bedell
> >
> >
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>
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Dege

So Many Things in Life Would Be Really Funny
.... If They Weren't Happening To Me