[mythtv-users] Is there a distributed filesystem available?

[Steve Hodge]

On 6/20/06, Brian Wood <beww at beww.org> wrote:
> On Jun 20, 2006, at 4:24 AM, Steve Hodge wrote:
> > Yup, that's what I was thinking. But it could be much more robust if
> > the filesystem was aware of what was going on. Ideally I was thinking
> > of a "meta" filesystem that would use other filesystems for the actual
> > storage. I.e. you mount your various underlying drives, tell the meta
> > filesystem where they can be found and then mount that filesystem
> > wherever you want it. If one of the underlying filesystems vanishes
> > then the files stored on that particular filesystem would just
> > disappear as well.
>
> So what you really want is the benefit of a multiple device
> filesystem but with as little "spanning" as possible, in other words
> you want the system to try and keep individual files on single
> devices if possible.

Yes.

> To an extent you would be working at cross purposes, systems like LVM
> are designed to hide the individuality of the devices, not be aware
> of them when making storage decisions.

Right, that's why I think it needs to be at a higher level - a
filesystem rather than a block device.

> In any case the situation is temporary. As soon as multi-terrabyte
> single drives are available cheaply we will all wonder why we had
> this discussion :-)

Perhaps. So far I've managed to fill every drive I've ever bought
faster than I expected. I'd be foolish to expect that to change.

Steve