Will FC2 move towards mdadm for all software raid config

[Yusuf Goolamabbas]

Considering that 2.6.2 has been released with RAID6 support which is
only supported by mdadm, will FC2 use mdadm exclusively and deprecate
raidtools

In case you are not aware of mdadm

http://www.cse.unsw.edu.au/~neilb/source/mdadm/

Regards, Yusuf

[Elliot Lee]

On Wed, 4 Feb 2004, Yusuf Goolamabbas wrote:
> Considering that 2.6.2 has been released with RAID6 support which is
> only supported by mdadm, will FC2 use mdadm exclusively and deprecate
> raidtools

mdadm is already included. raidtools will be eventually deprecated, but I
believe the installer still needs it at this point.

It's a matter of time :)
-- Elliot
Friends help you move. Real friends help you move bodies.

[Yusuf Goolamabbas]

> > Considering that 2.6.2 has been released with RAID6 support which is
> > only supported by mdadm, will FC2 use mdadm exclusively and deprecate
> > raidtools
>
> mdadm is already included. raidtools will be eventually deprecated, but I
> believe the installer still needs it at this point.

So FC2 will still use /etc/raidtab to configure software-raid ?
Would FC2 boot-up sequence (post-install) ever understand
/etc/mdadm.conf ?

Regards, Yusuf

[Jesse Keating]

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On Wednesday 04 February 2004 08:41, Yusuf Goolamabbas wrote:
> So FC2 will still use /etc/raidtab to configure software-raid ?
> Would FC2 boot-up sequence (post-install) ever understand
> /etc/mdadm.conf ?

Seth Vidal and a few other people are doing the work necessary to get 
FC2 mdadm ready.  As mentioned the big blocker currently is modifying 
anaconda to use mdadm instead of raidtools.  The userland changes are 
minimal.  If you know python, ping Jeremy Katz.

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[Bill Anderson]

On Wed, 2004-02-04 at 15:27, Jesse Keating wrote:
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> Hash: SHA1
>
> On Wednesday 04 February 2004 08:41, Yusuf Goolamabbas wrote:
> > So FC2 will still use /etc/raidtab to configure software-raid ?
> > Would FC2 boot-up sequence (post-install) ever understand
> > /etc/mdadm.conf ?
>
> Seth Vidal and a few other people are doing the work necessary to get 
> FC2 mdadm ready.  As mentioned the big blocker currently is modifying 
> anaconda to use mdadm instead of raidtools.  The userland changes are 
> minimal.  If you know python, ping Jeremy Katz.

Is he on the list? If so .. PING.
:)

I'm pretty good with Python, but have yet to dig into Anaconda. Jeremy,
if this isn't something you need to know Anaconda source very well for
(or something a non-Anaconda source Python guy could deal with), let me
know, I'll do what I can.

[Jeremy Katz]

On Thu, 2004-02-05 at 04:57 -0700, Bill Anderson wrote:
> > On Wednesday 04 February 2004 08:41, Yusuf Goolamabbas wrote:
> > > So FC2 will still use /etc/raidtab to configure software-raid ?
> > > Would FC2 boot-up sequence (post-install) ever understand
> > > /etc/mdadm.conf ?
> >
> > Seth Vidal and a few other people are doing the work necessary to get 
> > FC2 mdadm ready.  As mentioned the big blocker currently is modifying 
> > anaconda to use mdadm instead of raidtools.  The userland changes are 
> > minimal.  If you know python, ping Jeremy Katz.
>
> Is he on the list? If so .. PING.
> :)

Of course I am.
> I'm pretty good with Python, but have yet to dig into Anaconda. Jeremy,
> if this isn't something you need to know Anaconda source very well for
> (or something a non-Anaconda source Python guy could deal with), let me
> know, I'll do what I can.

It shouldn't be too terribly difficult, although the hard part is
testing it and making sure it all works :-)  anaconda-devel-list has a
couple of posts from me describing how to use an updates.img for easier
testing (basic summary: make an ext2 image, drop it as Fedora/base/
updates.img, mount via loopback, copy updated python files there).

The basic idea of what needs changing is to look at the RAID stuff in
fsset.py and convert it over from using the various raid-tools commands
to using mdadm based ones.  Also, there might be some changes needed in
raid.py, but I doubt it (since raid.py mostly just works with the
underlying ioctls)

Cheers,

Jeremy