sysadmin.adoc: add LVM configuration options

[pve-docs.git] / sysadmin.adoc

diff --git a/sysadmin.adoc b/sysadmin.adoc
index b27bf6fc1f700f49246ca1721edff3a211d9c59a..2ffe1507e42aaaa4903f33ec5eba80d7619b40e8 100644 (file)
--- a/sysadmin.adoc
+++ b/sysadmin.adoc
@@ -189,7 +189,7 @@ the base system, and you know how you want to configure and use the
 local storage. Network configuration is also completely up to you.
 
 In general, this is not trivial, especially when you use LVM or
-ZFS. This is why we provide an installation CDROM for {pve}. That
+ZFS. This is why we provide an installation CD-ROM for {pve}. That
 installer just ask you a few questions, then partitions the local
 disk(s), installs all required packages, and configures the system
 including a basic network setup. You can get a fully functional system
@@ -204,8 +204,8 @@ within a few minutes, including the following:
 NOTE: By default, the complete server is used and all existing data is
 removed.
 
-Installation Options
-~~~~~~~~~~~~~~~~~~~~
+Using the {pve} Installation CD-ROM
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Please insert the installation CD-ROM, then boot from that
 drive. Immediately afterwards you can choose the following menu
@@ -231,12 +231,53 @@ functional and error free.
 You normally select *Install Proxmox VE* to start the installation. 
 
 After that you get prompted to select the target hard disk(s). The
-`Options` button beside lets you select the target file system, and
-defaults to `ext4`.
+`Options` button aside lets you select the target file system, and
+defaults to `ext4`. The installer uses LVM if you select 'ext3',
+'ext4' or 'xfs' as file system, and offers additional option to
+restrict LVM space.
 
-If you have more than one disk, you can also select ZFS here. ZFS
-supports several software RAID levels, so this is specially useful if
-you do not have a hardware RAID controller.
+
+.Advanced LVM configuration options
+****
+The installer creates a Volume Group (VG) called `pve`, and additional
+Logical Volumes (LVs) called `root`, `data` and `swap`. The size of
+those volumes can be controlled with:
+
+`hdsize`::
+
+Defines the total HD size to be used. This way you can save free
+space on the HD for further partitioning (i.e. for an additional PV
+and VG on the same hard disk that can be used for LVM storage).
+
+`swapsize`::
+
+To define the size of the `swap` volume. Default is the same size as
+installed RAM, with 4GB minimum and `hdsize/8` as maximum.
+
+`maxroot`::
+
+The `root` volume size. The `root` volume stores the whole operation
+system.
+
+`maxvz`::
+
+Define the size of the `data` volume, which is mounted at
+'/var/lib/vz'.
+
+`minfree`::
+
+To define the amount of free space left in LVM volume group `pve`.
+16GB is the default if storage available > 128GB, `hdsize/8` otherwise.
++
+NOTE: LVM requires free space for snapshot creation.
+****
+
+If you have more than one disk, you can also use ZFS as file system.
+ZFS supports several software RAID levels, so this is specially useful
+if you do not have a hardware RAID controller.
+
+TIP: ZFS uses a lot of memory, so it is best to add additional 8-16GB RAM
+if you want to use ZFS.
 
 The next pages just asks for basic configuration options like time
 zone and keyboard layout. You also need to specify your email address