Re: NetBSD's LVM works great for me

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

On Tue, 22 Mar 2016, Swift Griggs wrote:
> I've been using LVM under NetBSD now in 7.0 since the release. I have found 
> it to be remarkably stable for such a newly implemented set of features. 
> Maybe I just haven't been doing enough to beat on it.

It's been around since the -6 era, so it's not that new.

> How possible/likely is it that NetBSD's LVM could get:

I don't think any major development has been done on LVM since it was 
committed which is a shame as, while solid, it has missing features as you 
describe.

I would add multipathing as a wish-list item too.

>  * LVM caching devices ala Linux. RHEL 7.1 intro'd this and it works
>    quite well. Ie.. using a fast disk to cache & front-end slower ones.
>    This way you can get a ZIL-like feature without having ZFS or any
>    specific file system.
>
>  * Some kind of DRBD-async-proxy-alike feature. I know this is the killer
>    pay-only feature in DRBD. It's also extremely wonderful. I'm probably
>    dreaming, but this would be awesome. It could be implemented in LVM
>    ala VxVM's "Volume Replicator" (which is also a "pay us a bit more
>    because we know you want this awesome feature"). It could also be done
>    standalone in a separate subsystem.

Have you looked at HAST in FreeBSD?

https://wiki.freebsd.org/HAST

--
Stephen