On Thu, 04 Apr 2013 23:35:01 +0200
Kees Nuyt <k.n...@zonnet.nl> wrote:

> On Thu, 4 Apr 2013 15:13:20 +0200, you wrote:
> 
> >On Thu, 4 Apr 2013 12:09:14 +0000
> >vbox-users <vbox-us...@clevertrove.com> wrote:
> >
> >> > From: Stephan von Krawczynski [mailto:sk...@ithnet.com]
> >> > 
> >> > does anybody have a strategy (which snapshots or the like) to create a
> >> > consistent vdi image of a running guest system without interacting with 
> >> > the
> >> > guest or offlining it?
> >> 
> >> I use zfs (or btrfs) storage, which handles the storage snapshots.
> >> If I ever need to rollback to a point in time snapshot, the guest
> >> machine will boot up, think it's rebooting after an unexpected
> >> power loss.
> >
> > That is no real option under linux host.
> > zfs is non-existent. 
> 
> Really? Have a look at:
>       http://zfsonlinux.org/ 
> It's pretty stable.

yes? issue tracker:

- zpool half-unavail after power loss
- zpool import internal error
- Kernel oops
- Hang/Lockup under load
- Deadlock under load
- Thread overran stack, or stack corrupted
and so on ...

A disk based filesystem not being part of the regular kernel is not usable for
production. You have to be sure that there will be support for coming kernel
versions. And I mean _sure_, not hopeful.

-- 
Regards,
Stephan


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