Some hints on things only needed in rescue situations, i.e. easily forgotten between emergencies.
A lot of these got easier over the years, but under stress ...
Changing keyboard layout
Example for German (.de):
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loadkeyloadkeys de |
Assembling Software RAID devices
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mdadm --assemble --scan |
Accessing LVM volumes
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# evtl. decryot
cryptsetup luksOpen /dev/nvme0n1p3 hd_crypted
# find
lvm vgscan
# activate
lvm
vgchange -ay
# list
lvm lvs
# or
lvdisplay
# mount something
mount /dev/volumegroup/logicalvolume /mountpoint |
Re-creating VGs & LVMs on new disks
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fdisk /dev/sda
# do not forget to make one partition bootable
vgcreate vg1 /dev/sdaX
lvcreate -L 10G -n root vg1
mkfs /dev/vg1/root
# mount ...
# restore data
# update fstab (UUIDs...)
#install-mbr /dev/sda
#install-grub /dev/sda /dev/sda1
# or:
#dpkg-reconfigure grub-pc
# ask the FSM to divert Murphy with pasta
# reboot |