CentOS - Nov 2015 - C7: How to configure raid at install time

On Wed, Nov 18, 2015 at 09:49:43PM -0700, Devin Reade
wrote:
> --On Wednesday, November 18, 2015 11:07:12 PM -0500 Fred Smith
> <fredex at fcshome.stoneham.ma.us> wrote:
> 
> >But it isn't at all obvious how one would do a new RAID1 setup in
> >Anaconda
> 
> Don't feel bad.  The abortion that is the RHEL/CentOS 7 graphical
> install interface is far too dumbed-down to be easily usable by anyone
> that understands what is going on under the covers.  Oh, the irony.
> 
> >Can anyone provide (or give pointers to) a good recipe for doing this?
> 
> A quick google brought up the following link that (looking just at the
> disk portion) appears to be mostly correct, and should give you the
> magic incantation:
> 
> <http://www.ictdude.com/howto/install-centos-7-software-raid-lvm/>
> 
> The one thing I would point out regarding the above link is that despite
> conventional UNIX wisdom, *don't* put /usr on a separate filesystem
> in CentOS 7.  <sarcasm>Thank you RedHat</sarcasm>
> 
> Flames to /dev/null.
> 
> Devin
that looks great, thank you!

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us
-----------------------------
                         God made him who had no sin
                      to be sin for us, so that in him
                 we might become the righteousness of God."
--------------------------- Corinthians 5:21 ---------------------------------

Fred Smith wrote:
> On Wed, Nov 18, 2015 at 09:49:43PM -0700, Devin Reade wrote:
>> --On Wednesday, November 18, 2015 11:07:12 PM -0500 Fred Smith
>> <fredex at fcshome.stoneham.ma.us> wrote:
>>
>> >But it isn't at all obvious how one would do a new RAID1 setup
in
>> >Anaconda
>>
>> Don't feel bad.  The abortion that is the RHEL/CentOS 7 graphical
>> install interface is far too dumbed-down to be easily usable by anyone
>> that understands what is going on under the covers.  Oh, the irony.
Agreed. What I do, all the time for a new server, is to get to the screen
in the graphical install where you select a drive, then <alt><f2>,
and do
what I need to - partition, make a RAID, whatever, then switch back to the
graphical, <done> and now set mount points, etc.

       mark

Fred Smith wrote:
> On Wed, Nov 18, 2015 at 09:49:43PM -0700, Devin Reade wrote:
>> --On Wednesday, November 18, 2015 11:07:12 PM -0500 Fred Smith
>> <fredex at fcshome.stoneham.ma.us> wrote:
>>
>> >But it isn't at all obvious how one would do a new RAID1 setup
in
>> >Anaconda
>>
>> Don't feel bad.  The abortion that is the RHEL/CentOS 7 graphical
>> install interface is far too dumbed-down to be easily usable by anyone
>> that understands what is going on under the covers.  Oh, the irony.
<snip>
Right, hit <send>, then thought of one more annoyance: the stupid
graphical custom partition option will NOT do what you tell it: I want
/boot first, then swap, *then* /, but if you don't do it the way I
mentioned in my last post - <alt><f2> and parted, it renumbers and
reassigns your partitions Magically <fairy dust/>, and puts / after /boot,
and before swap. For no particular reason, and with no explanation.

          mark

On Thu, November 19, 2015 8:15 am, m.roth at 5-cent.us
wrote:
> Fred Smith wrote:
>> On Wed, Nov 18, 2015 at 09:49:43PM -0700, Devin Reade wrote:
>>> --On Wednesday, November 18, 2015 11:07:12 PM -0500 Fred Smith
>>> <fredex at fcshome.stoneham.ma.us> wrote:
>>>
>>> >But it isn't at all obvious how one would do a new RAID1
setup in
>>> >Anaconda
>>>
>>> Don't feel bad.  The abortion that is the RHEL/CentOS 7
graphical
>>> install interface is far too dumbed-down to be easily usable by
anyone
>>> that understands what is going on under the covers.  Oh, the irony.
> <snip>
> Right, hit <send>, then thought of one more annoyance: the stupid
> graphical custom partition option will NOT do what you tell it: I want
> /boot first, then swap, *then* /, but if you don't do it the way I
> mentioned in my last post - <alt><f2> and parted, it renumbers
and
> reassigns your partitions Magically <fairy dust/>, and puts / after
/boot,
> and before swap. For no particular reason, and with no explanation.
>
Indeed, make something that even idiot can use, and only idiot will [be
happy to] use it.

My C7 boxes (workstations, no C7 servers, please) are all installed using
kickstart, and drives are partitioned exactly as I described in kickstart
file. There is still something we can happily use ;-)

Valeri

++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++