Drake Wilson <dr...@dasyatidae.net> wrote: > 1. The starting conditions: I've pared them down to two small disks, > tested in a QEMU+KVM virtual machine. Both have GPT partition > tables, per [[STARTING-TABLES]] below. Take note of disk 2, > partition 3, which is marked with an LVM type code (applied via > setting 8e00 in gdisk) but in fact contains a LUKS volume which > contains an LVM PV. > > (gdisk doesn't have an obvious type code for "Linux LUKS volume", > and a straw poll of another Linux sysadmin says they do the same > thing I do and use the underlying type. Maybe "Linux reserved" > would be more accurate?) [...] > Outcome: all attached LVM+LUKS+GPT volumes were destroyed. :-( :-( > :-(
I have prepared a patch, to add a warning about this to the guide. Comments welcome! diff --git a/en/using-d-i/modules/partman-lvm.xml b/en/using-d-i/modules/partman-lvm.xml index 89b32b958..4a5378c0d 100644 --- a/en/using-d-i/modules/partman-lvm.xml +++ b/en/using-d-i/modules/partman-lvm.xml @@ -41,7 +41,18 @@ to be used as physical volumes for LVM. This is done in the <menuchoice> <guimenu>Use as:</guimenu> <guimenuitem>physical volume for LVM</guimenuitem> </menuchoice>. -</para><para> +</para><warning><para> + +Be aware: the new LVM setup will destroy all data on all partitions marked with +an LVM type code. So, if you already have an LVM on some of your disks, and +want to install Debian additionally to that machine, the old (already existing) +LVM will be wiped out! The same counts for partitions, which are (for any +reason) misleadingly marked with an LVM type code, but contain something +different (like an encrypted volume). You need to remove such disks from the +system, before performing a new LVM setup! And - as always - you need to have +backups of your data. You made that backups, as we already told you, right? + +</para></warning><para> When you return to the main <command>partman</command> screen, you will see a new option <guimenuitem>Configure the Logical Volume Manager</guimenuitem>. -- ============================================================ Created with Sylpheed 3.5.1 under D E B I A N L I N U X 9 " S T R E T C H " . Registered Linux User #311290 - https://linuxcounter.net/ ============================================================