notes about what we do and dont support, blockdevice/filesystem-wise. + nice example for user on how to use the interactive filesystem thing

1 files changed, 39 insertions, 0 deletions

diff --git a/doc/official_installation_guide_en b/doc/official_installation_guide_en
index 827e793..25c637c 100644
--- a/doc/official_installation_guide_en
+++ b/doc/official_installation_guide_en
@@ -332,6 +332,15 @@ you want to retry.
   want to undo or redo a certain scheme.  You will be prompted for this if
   you forget.
 
+Notes:
+
+* AIF can help you set up new dm_crypt and lvm volumes, but not (yet) softraid.
+* AIF currently doesn't help you creating volumegroups that span multiple
+  physical volumes.  (if you need this -unlikely- : use vgcreate)
+* AIF supports reusing filesystems, but only if it can find the blockdevice.
+  If you want to reuse a filesystem that is on top of lvm/dm_crypt/softraid,
+  you'll need to bring up the volumes yourself.
+
 #####  Auto-Prepare
 
 Auto-Prepare will automatically partition a hard drive of your choice
@@ -380,6 +389,36 @@ swap).
 If anything is found, you can go back to fix these issues, or continue at
 which point everything will be setup the way you asked.
 
+For example, if you want a setup that uses LVM on top of dm_crypt, you would:
+
+* make sure that you have a 2 partitions: a small one for the unencrypted
+  boot (about 100M) and one for the rest of the (encrypted) system.
+  (do this in "Manually partition hard drives")
+* on your /dev/sdX1, make an ext2 filesystem with mountpoint /boot
+* on your /dev/sdX2, make a dm_crypt volume, with label sdX2crypt
+  (or whatever you want)
+* /dev/mapper/sdX2crypt will appear.  Put a LVM physical volume on this
+* /dev/mapper/sdX2crypt+ appears.  This is the representation of the
+  physical volume.  Put a volumegroup on this, with label cryptpool
+  (or whatever you want)
+* /dev/mapper/cryptpool appears.  On this volumegroup you are able to put
+  multiple logical volumes.  Make 2:
+  * one with size 5G: label this cryptroot
+  * one with size 10G: label this crypthome
+* 2 new volumes appear:
+  * /dev/mapper/cryptpool-cryptroot: on this blockdevice, you can put your
+    root filesystem, with mountpoint /.
+  * /dev/mapper/cryptpool-crypthome is the blockdevice on which you can put
+    the filesystem with mountpoint /home.
+* If you want swapspace, make a logical volume for swap and put
+  a swap volume on it.
+* That's it! If you select 'done' it should process the model and create
+  your disk setup the way you specified.
+  The cool part is that you can pick relatively small
+  values for your volumes to start with, and if you need more space later
+  you can grow the logical volume and the filesystem on top of it.
+
+
 ##### Rollbacks
 
 The rollback function will do everything necessary to "undo" changes you