On 04/29/2022 07:30 AM, Joakim Dellrud wrote: > Think he might have just missed the fact that you had EFI boot aswell. So > then it would be: > > /boot md0 > > /boot/EFI md1 > > / md2 -> vg0 -> lvs > > Otherwise it was more a suggestion on using encryption for more then just the > /home partition since there is always a risk with SWAP etc to have > information that you do not want to be read. > > My current setup goes: > > /dev/mapper/vg0-root / > /dev/mapper/vg0-usr /usr > /dev/nvme0n1p2 /boot <- this would be a md device > in your case > /dev/nvme0n1p1 /boot/efi <- this would be a md device > in your case > /dev/mapper/vg0-home /home > /dev/mapper/vg0-var /var > /dev/mapper/vg0-tmp /tmp > /dev/mapper/vg0-var_tmp /var/tmp > /dev/mapper/vg0-var_log /var/log > /dev/mapper/vg0-var_log_audit /var/log/audit > > Note that we are most likely mixing data redundancy with data security a bit > here. So as far as your plan to run a md device for each "partition" needed > that is a sound and solid plan. > > When it comes to encryption the point is that you might want to have more > then just /home protected. But this is very dependent on your threat model. > If you have a laptop encryption of all partitions is suggested. > > Regards > > > On 2022-04-24 20:54, H wrote: >> On 04/23/2022 09:19 PM, H wrote: >>> On 04/19/2022 09:57 AM, Roberto Ragusa wrote: >>>> On 4/18/22 1:27 PM, H wrote: >>>>> I have a new computer with 2 x 2TB SSDs where I wanted to install C7 and >>>>> use mdadm for RAID1 configuration and encrypting the /home partition. On >>>>> the net I found >>>>> https://tuxfixer.com/centos-7-installation-with-lvm-raid-1-mirroring/ >>>>> which I adopted slightly with respect to partition sizes, using RAID1 for >>>>> /boot and /root as well and added the /home partition with RAID1 and >>>>> chose to have /home encrypted. >>>> It may be a good idea to also have / and swap encrypted, since user data >>>> can go there easily >>>> (logs, locatedb, swapped mem). >>>> >>>> I would do: >>>> - /boot as a separate RAID1 (md1=sda1+sdb1) >>>> - then another RAID1 (md2=sda2+sdb2) using all the remaining disk >>>> - luks on top of md2, giving you luks-xxxxx >>>> - LVM with a PV on luks-xxxxx >>>> - VG and LVs for swap, / and /home (do not assign all the available space >>>> now, especially if using xfs as filesystem) >>>> >>>> Not sure if you can do this setup through the installer, you have to try >>>> (in a VM maybe). >>>> >>>> Regards. >>>> >>> Thank you. I will have time to get back to this system tomorrow to try this. >>> >>> _______________________________________________ >>> CentOS mailing list >>> CentOS@centos.org >>> https://lists.centos.org/mailman/listinfo/centos >> Roberto, what would the advantage(s) be with your setup, ie one RAID1 array >> for everything but /boot compared to what I had done, ie three RAID1 arrays >> for /boot/efi RAID1, /boot RAID1 and one LVM-RAID1 for / and /home? As a >> naive user it would seem to me that the setup I did would be more resilient >> if a disk fails, or? >> >> _______________________________________________ >> CentOS mailing list >> CentOS@centos.org >> https://lists.centos.org/mailman/listinfo/centos
I am coming back to this topic after a long while. Again, I am installing CentOS 7 on a new machine. Using the graphical installer and following the suggestion above, I first created the /boot partition in RAID1 configuration, then /boot EFI in RAID1 configuration, after which I proceeded to create an LVM in RAID1 configuration for the remainder of the disks using the / partition. If I understand the above correctly, I should then create /home and swap using this LVM (as well as possibly /var) but do not seem to be able to do so in the graphical installer. Have I missed something? Or, do I need to do this differently following another path? Thank you in advance. _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
