RE: [SLE] Anyone used the Webmin Raid function?

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Date: Thu, 20 Nov 2003 15:53:56 -0800
To: "Maraglia, Dominicx" <dominicx.maraglia@intel.com>, "Tom Nielsen" <tom@neuro-logic.com>, "Suse" <suse-linux-e@suse.com>, <Soyoung.Park@Sun.COM>

Hello Tom,

So, I did some testing here and I had no problem creating a RAID 1 volume and keeping the existing data intact. I performed this test of local disks and SAN volumes and in both cases the RAID 1 was created without data loss. However, I would say to be careful and back up your data!

Here are the step-by-step commands -- you can easily put these into your own shell script.

All these commands must be executed as root; please use caution and ask questions if in doubt!

1) Create and save a file "/etc/raidtab" with the follwing contents:

     raiddev /dev/md0
               raid-level 1
               persistent-superblock 1
               chunk-size 32
               nr-raid-disks 2
               device /dev/sdc1 # original drive with data on it
                        raid-disk 0
               device /dev/sdf1 # new drive being added to the RAID
                        raid-disk 1

2) Execute the command "/sbin/mkraid --really-force /dev/md0"

3) Now execute "/sbin/raidstart /dev/md0"

4) You will need to mount the RAID volume to make is accessible; something like this:

/bin/mount -t ext2 /dev/md0 /mnt/raid

That's it...you RAID volume should now be accessible under /mnt/raid

Hope this is helpful.

Cheers,
Dominic

> Hey Tom,
>
> I do a lot of testing with software RAID here at work. I
> found webmin a bit kludgy, so I researched the topic and
> found the commands webmin calls. Webmin is cool, but it
> insulates you from what is happening "under the hood". If
> you are interested I can send you some very helpful scripts...
>
> Cheers,
> Dominic
>
>
>
> > -----Original Message-----
> > From: Tom Nielsen [mailto:tom@neuro-logic.com]
> > Sent: Wednesday, November 19, 2003 12:28 PM
> > To: Suse
> > Subject: [SLE] Anyone used the Webmin Raid function?
> >
> >
> > I'm thinking of trying the Raid 1 function in webmin, but I
> can't find
> > any documentation. Has anyone tried it?
> >
> > tom
> > --
> >
> >
> > Tom Nielsen
> > Neuro Logic Systems
> > 805.389.5435 x18
> > www.neuro-logic.com
> >
>
> --
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>
>

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