[CentOS] C 7 installation annoyances

Wed Oct 17 00:15:25 UTC 2018
David C. Miller <millerdc at fusion.gat.com>

----- Original Message -----
> From: "mark" <m.roth at 5-cent.us>
> To: "CentOS mailing list" <centos at centos.org>
> Sent: Tuesday, October 16, 2018 2:36:38 PM
> Subject: Re: [CentOS] C 7 installation annoyances

> Gordon Messmer wrote:
>> On 10/16/18 1:24 PM, mark wrote:
>>> Gordon Messmer wrote:
>>>> As best I recall, there's no support in the UI for LVM volumes with
>>>> RAID level.  (And I don't see any such option in the kickstart
>>>> documentation, which also suggests that it won't be present in the
>>>> UI.)
>>>> The supported configuration is to create two partitions, create
>>>> a RAID1 volume from those, make that volume an LVM physical volume,
>>>> and then any logical volumes in that VG will be backed by a RAID1 set.
>>> Which is *stupid*. Why would you not want the LVM on a single RAID1?
>> I don't think I follow you.  What I described creates a single RAID1
>> volume, and then creates logical volumes within it.
> I don't seem to see your how-to-do-it today. All I know is that the GUI
> partitioner lets me *either* to lvm, *or* RAID, which results in two RAID
> partitions  (root and swap), not one LVM on top of a single RAID 1
> partition.
>     mark

LVM on a Linux software RAID1 is still easy to create. Here is a link to a tutorial someone made with screenshots.


Although I don't use LVM much I do use Linux software RAID1 on all my production systems. I have a few dozen systems that use it under CentOS 6 and 7. It has always worked just fine and has saved me trouble from failing disks on quite a few occasions throughout the years.  

David Miller.