Converting the root filesystem to ReiserFS on LVM...

[Anton Markov]

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Lennart Sorensen wrote:
> I don't think you can do it manually.  I believe LVM requires
> devicemapper to create and manage the device nodes.

Actually, device mapper is only required for the new LVM2 format. It
replaces the "lvm-mod" module with a generic "dm-mod" which can be used
for more than LVM. You still need the user-space tools specific for LVM2.

The need for user-space tools is one reason why I do not recommend
keeping the root partition on LVM. It makes it that much harder to
recover from problems, because you need to make sure you have a disk
with an LVM-capable kernel AND the proper tools. This is especially
difficult for LVM2 systems (I would know - I got more than one
late-night headache from having root on LVM2). On the other hand if you
have a normal root partition, it takes a simple boot disket with a
correctly compiled custom kernel. No need for annoying initrd systems.
And a properly configured root partition is around 300MB in size.

> You may want to look at convertfs.  Maybe it can do something useful.
> Maybe it will trash the system. :)
Interesting. I'll be trying that when ReiserFS4 rolls out

- -- 
Anton Markov <("anton" + "@" + "truxtar" + "." + "com")>

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