RAID Munging Question

[kentborg at borg.org (Kent Borg)]

So I did my RAID 0->1 conversion last night and I think it worked.

My recipe turned out to be a little off: I needed an extra step (4.9)
"# raidstop /dev/md5"; step 5 needed an extra flag "# mkraid -f
/dev/md5" to force deletion of previous undesired volume; step 8, 
"# mount /home" didn't work because I no longer had a "/home" label on
that volume so I did "# mount /dev/md5 /home" and added step 15
"tune2fs -L /home /dev/md5" so my fstab will work on reboot; and
finally, I wanted to go to bed so I didn't wait for the resync to
happen (mkraid itself finished very quickly) and instead did 
"# telinit 3".

It seemed to work.  <whew>


Thanks for the help,

-kb, the Kent whose /home partition should now be twice as reliable as
normal as opposed to yesterday's condition of being half as reliable
as normal.


On Fri, Apr 05, 2002 at 12:26:23PM -0500, Kent Borg wrote:
> On Fri, Apr 05, 2002 at 12:19:07PM -0500, I wrote:
> > Here is my current best guess:
> > 
> >   1. Reboot single user (so little will being going on)
> > 
> >   2. Tar up /home and park it in another partition--luckily I do have
> >      the room,
> > 
> >   3. Edit /etc/raidtab so /dev/md5 line that currently reads
> >      "raid-level 0" will read "raid-level 1",
> > 
> >   4. "# unmount /home"
> > 
> >   5. "# mkraid /dev/md5",
> > 
> >   6. "# mkfs /dev/md5",
> > 
> >   7. Wait for mkfs to finish,
> > 
> >   8. "# mount /dev/md5 /home",
> > 
> >   9. See if df sees right size disk,
> > 
> >  10. Disconnect internet connection (don't want any new e-mail yet),
> 
> Think I should add:
> 
>  10-1/2.  Wait for mkraid's mirroring to finish
> 
> >  11. Reboot regularly, things working?,
> > 
> >  12. Plug in internet connection.
> 
> 
> -kb
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