Linux Software Raid

Douglas Furlong douglas.furlong at firebox.com
Wed Jul 21 15:15:44 UTC 2004


Hello All.

I was hoping some one could answer a question for me.

I currently have a system with a software RAID card and am using their
binary drivers, this obviously is not the ideal solution, and as such I
want to remove the proprietary binary drivers and just use the normal
ide drivers that come with Linux. I am not using their RAID software, so
I don't think that will be a problem.

Rebuilding the system from scratch is not ideal, planned yes, but not
just yet.

Using the Binary driver supplied causes the disks to appear as sdX, and
as such my /etc/raidtab looks as follows.

raiddev /dev/md0
        raid-level      5
        nr-raid-disks   4
        nr-spare-disks  0
        persistent-superblock 1
        parity-algorithm        left-symmetric
        chunk-size      32
        device          /dev/sda
        raid-disk       0
        device          /dev/sdb
        raid-disk       1
        device          /dev/sdc
        raid-disk       2
        device          /dev/sdd
        raid-disk       3

What I want to know is, can I just remove the custom drivers, and use
the disks as standard IDE disks, then change the /etc/raidtab so
that /dev/sdX = /dev/hdX.

I of course have to make sure that the disks stay the same. Will this
break Linux software RAID array?

Any help would be much appreciated.



-- 
Douglas Furlong
Systems Administrator
Firebox.com
T: 0870 420 4475
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