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Old 08-18-2012, 01:15 PM   #1
chen.yo
LQ Newbie
 
Registered: Apr 2011
Location: israel
Distribution: CentOS release 5.4
Posts: 13

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Installing Centos6.3-minimal on RAID 1


hello all,
i want to install centos6.3 on a software raid1 on a Virtual machine for testing.


i have two hdd disks and i want to accomplish the following:

make raid1 with this 2 disks:
/dev/sda
/dev/sdb

i have already partitioned theme as:
/dev/sda1 200MB for boot
/dev/sda2 17.8G for o\s
/dev/sda3 2G for swap.

and created my raid1 array fully synced.

when the installation of centos6.3-minimal reaches the part of "Partitiong Type" it dosent give me the option
to create\pick raid devices.
it only lists: /dev/sda /dev/sdb

1. is this a limitation of Centos6.3 minimal?

in short,
what are the steps to install centos6.3 minimal on raid1? should i create the raid1 before or after?
why does the installation wizard wont show anything about raid devices?

i found:
http://wiki.centos.org/HowTos/SoftwareRAIDonCentOS5
can i do the same steps without the GUI,i.e using Centos-minimal installation?
see this one also:
http://lists.centos.org/pipermail/ce...ly/114224.html

guess i just download the full dvd ....

Last edited by chen.yo; 08-19-2012 at 11:30 AM.
 
Old 08-22-2012, 03:10 PM   #2
mpapet
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Registered: Nov 2003
Location: Los Angeles
Distribution: debian
Posts: 548

Rep: Reputation: 72
You've got it wrong.

FIRST put the empty disks into a raid1
THEN create the partitions on the new software RAID device. ex. /dev/md0

Installing GRUB can get a little tricky because GRUB goes on the actual disk /dev/sda and perhaps /dev/sdb, not the /dev/md0 device.

The Redhat/CentOS installer is different than Debian's. It's been too long since I've done a software RAID install with the CentOS one, so you may have to work at it a little more including using a live CD to set up the software RAID.

Last edited by mpapet; 08-22-2012 at 03:13 PM.
 
Old 09-09-2012, 03:22 AM   #3
chen.yo
LQ Newbie
 
Registered: Apr 2011
Location: israel
Distribution: CentOS release 5.4
Posts: 13

Original Poster
Rep: Reputation: 0
Thanks for your reply , im experimenting with different raid\lvm setups:
what you have suggested is later addition of the kernel which support partitiong of raid devices (i.e parition md0 ..).
ill get to that soon...

i managed to prepare my partition layout and raided it as i described above using the centos6.3 regular dvd1 (not minimal).
 
  


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