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Signed-off-by: Tommy <contact@tommytran.io>
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Tommy 2024-06-01 15:23:55 -07:00
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@ -23,12 +23,12 @@ The partition layout I use allows us to replicate the behavior found in openSUSE
1. Snapper rollback <number> works! You will no longer need to manually rollback from a live USB like you would with the @ and @home layout suggested in the Arch Wiki.
2. You can boot into a readonly snapshot! GDM and other services will start normally so you can get in and verify that everything works before rolling back.
3. Automatic snapshots on pacman install/update/remove operations
4. Directories such as /boot, /boot/efi, /var/log, /var/crash, /var/tmp, /var/spool, /var/lib/libvirt/images are excluded from the snapshots as they either should be persistent or are just temporary files. /cryptkey is excluded as we do not want the encryption key to be included in the snapshots, which could be sent to another device as a backup.
5. GRUB will boot into the default BTRFS snapshot set by snapper. Like on openSUSE, your running system will always be a read-write snapshot in @/.snapshots/X/snapshot.
4. Directories such as `/boot`, `/boot/efi`, `/var/log`, `/var/crash`, `/var/tmp`, `/var/spool`, /`var/lib/libvirt/images` are excluded from the snapshots as they either should be persistent or are just temporary files. `/cryptkey` is excluded as we do not want the encryption key to be included in the snapshots, which could be sent to another device as a backup.
5. GRUB will boot into the default BTRFS snapshot set by snapper. Like on openSUSE, your running system will always be a read-write snapshot in `@/.snapshots/X/snapshot`.
### Security considerations
Since this is an encrypted /boot setup, GRUB will prompt you for your encryption password and decrypt the drive so that it can access the kernel and initramfs. I am unaware of any way to make it use a TPM + PIN setup.
Since this is an encrypted `/boot` setup, GRUB will prompt you for your encryption password and decrypt the drive so that it can access the kernel and initramfs. I am unaware of any way to make it use a TPM + PIN setup.
The implication of this is that an attacker can change your secure boot state with a programmer, replace your grubx64.efi and it will not be detected until its too late.