[CentOS] C 7 installation annoyances

Mon Oct 15 21:43:20 UTC 2018
Valeri Galtsev <galtsev at kicp.uchicago.edu>

On 10/15/18 3:22 PM, mark wrote:
> In the disk partitioner, I can't
>    1) choose to make the LVM with root and swap be on a RAID 1. Is there
>          some way to do that, rather than two separate partitions RAIDed?
>    2) They don't align, so I can't clone /dev/sda to /dev/sdb as a
>          failover (for /boot and /boot/efi). I've created those two, manually,
>          and nope, it wiped them out, so I can't clone those two.
> Any solutions for either of these? I don't have hardware RAID card on this
> box.

My favorite solution to above is: all my filesystems live on hardware 
RAID devices. No intermediate things like LVMs or software RAID. Just 
GPT label and "simple" partitions (or whatever synonym installer script 
is using). I know, you pay a bit more for hardware. But in addition to 
having more reliable IMHO system (I know, some people do not agree), you 
have simplicity, which also adds to reliability, and to speedy recovery 
from failures with much smaller room for blunders and data loss.

Just my $0.02.


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