On Sat, Jun 4, 2022 at 3:03 PM Simon <linux@???> wrote:
>
> o1bigtenor via Dng <dng@???> wrote:
>
> > I have not ever installed like this so first the configuration.
> >
> > Ryzen 7 3800X
> > Asus TUF Gaming X570-Pro mobo
> > 64 GB ram
> > 2 - 1 TB M2 drives
> > 2 - 1 TB SSDs
> >
> > I want to set the system up so that the drives are 2 sets of Raid-1 with
> > (proposed)
> > set 1
> > /efi, /boot, /, /usr, /usr/local, /var, swap
> > set 2
> > /home
> >
> > How do I set up the raid arrays?
> > Are they set up first and then the system is installed?
> > Or do I set up what I want on one of each of the sets and the copy
> > that setup to the second (of the set) and make it raid after system
> > install?
> >
> > I can't seem to find anything done within the last 2 years talking about this.
> > Don't see where it should be difficult but then - - - well I've
> > thought that before(!!!!) and had a boat load of male bovine excrement
> > to wade through!
> > (So I'm asking before doing to forestall issues - - - I hope!)
>
> Others have given good information. Unless things have changed since I last did an install (couple of years I think), you can just go into manual disk partitioning and do it from there. Unfortunately, to do an optimum install means getting the calculator out as the defaults are sub-optimal …
>
> AFAIK, all disks these days are 4k sectors, or for SSD, probably bigger. Ideally you want your partitions aligned to these boundaries. So for example, leave sectors (unix 512 byte sectors) 0-63 unused, and start your first partition at sector 64. If you know that your SSD uses (say) 64k blocks internally, then leave sectors 0-127 unused and start the first partition at sector 128. From memory the partitioning tool in the installer doesn’t do this alignment unless you manually calculate all your partition start & end blocks.
> Everything will work fine if things are not aligned, but performance will be sub-optimal in some situations.


OK - - - finally have a working system - - - -lots of joys - - - first
a dead psu then
a cabling issue (the usb3.0 front panel connector on the mobo has a specific
installation orientation) and then the mob said there was room for 8 SATA drives
and 2 M2 drives - - - well when you use the M2 slots you lose a SATA drive for
each - - - lots of joys and time wasted - - - if only these gotchas
were easier to find!!!

Now I come to the install.

First attempt
set up 2 raid 1s
except now I can't partition the drives
second attempt
set up 2 drives with some spacer partitions (4.0 MB each) and some 8 partitions
set up 2 drives with same spacer partitions and a large /home partition
then wanted to make 2 raid arrays
- - - - except I'm only allowed to use 2 partitions  - - - -  one from
each member
   of the array.
   (There was also complaining that there were 2 /root partitions
before I tried to
    create the array.)

Neither of these options is what I want.
(This is only some couple hours down the drain - - - argh)

So - - - how do I achieve 2 raid 1 arrays?
#1 has partitions for /efi, /boot, /root/, swap, /tmp, /var, /usr, /usr/local
with a spacer of 4.0 MB between (and before the first and after each)
#2 has a partition for /home
with a spacer of 4.0 MB between (and before the first and after)

The destructions that I have been able to find are - - - - well - - - -
they're mostly talking about using LVM - - - - which I have not ever used.

So - - - please - - - - what do I do besides abandon my idea?

(There must be some kind of mystery step someplace - - - and I can't
find it!!!!)

TIA