Messages in this thread | | | From | Blaisorblade <> | Subject | Writing on DM snapshots, and having no "mainstream" device (was: Re: Fw: [PATCH 1/7] Add dm-snapshot tutorial in Documentation) | Date | Fri, 23 Sep 2005 22:11:31 +0200 |
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On Wednesday 21 September 2005 17:48, Alasdair G Kergon wrote: > On Tue, Sep 20, 2005 at 04:34:33PM -0700, Andrew Morton wrote: > > ack? > > Applied some quick corrections to this. I'm now looking at this, but you've done an error. You say that
You must create the snapshot-origin device before you can create snapshots.
This is totally wrong. The whole point of my document is to show that you can create snapshots *WITHOUT* having a snapshot-origin device (yes, I did it).
And while the LVM setup (with snapshot-origin) is often used and well known, the possibility to do without the snapshot-origin, and more important to write on the snapshots, is something which is not widely known at all.
In fact, UML community has been using an in-house version of the same feature, which cannot be mounted on the host due to missing code. > See also http://people.redhat.com/agk/talks/FOSDEM_2005/ > (slides 15-27) Not yet had time to look at those, sorry. > You might like to convert some of those diagrams to ASCII > and include them? If you feel like doing this, ok, but I'm not normally a documentor. > Alasdair
-- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade
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