add documentation how to resize a vm harddisk

_toc.yml

@@ -43,6 +43,7 @@ chapters:
           - file: admin-guide/configuration/services
           - file: admin-guide/configuration/mount
           - file: admin-guide/configuration/distribute_files
+          - file: admin-guide/configuration/resize_vm_disk
           - file: admin-guide/configuration/vgroot
           - file: admin-guide/configuration/networking
           - file: admin-guide/configuration/xrdp

admin-guide/configuration/resize_vm_disk.md

@@ -0,0 +1,72 @@
+# Resice VM Disk
+
+To increase the harddisk of a VM, go to vcenter.psi.ch, select the machine, right click, and select __Edit Settings ...__
+
+![](resize_vm_disk/resize_vm_disk_01.png)
+
+Increase the harddisk size to the value you need to have:
+
+![](resize_vm_disk/resize_vm_disk_02.png)
+
+
+Now connect to the system and change to root. 
+
+List block devices:
+```bash
+[root@awi-ci-01 ~]# lsblk
+NAME                   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
+sda                      8:0    0   42G  0 disk
+├─sda1                   8:1    0  600M  0 part /boot/efi
+├─sda2                   8:2    0    1G  0 part /boot
+└─sda3                   8:3    0 32.4G  0 part
+  ├─vg_root-lv_root    253:0    0   14G  0 lvm  /
+  ├─vg_root-lv_var_tmp 253:1    0    2G  0 lvm  /var/tmp
+  ├─vg_root-lv_var_log 253:2    0    3G  0 lvm  /var/log
+  ├─vg_root-lv_var     253:3    0    8G  0 lvm  /var
+  ├─vg_root-lv_tmp     253:4    0    2G  0 lvm  /tmp
+  └─vg_root-lv_home    253:5    0    2G  0 lvm  /home
+```
+
+Extend partition:
+```bash
+[root@awi-ci-01 ~]# parted /dev/sda
+GNU Parted 3.2
+Using /dev/sda
+Welcome to GNU Parted! Type 'help' to view a list of commands.
+(parted) print
+Model: VMware Virtual disk (scsi)
+Disk /dev/sda: 45.1GB
+Sector size (logical/physical): 512B/512B
+Partition Table: gpt
+Disk Flags:
+
+Number  Start   End     Size    File system  Name                  Flags
+ 1      1049kB  630MB   629MB   fat32        EFI System Partition  boot, esp
+ 2      630MB   1704MB  1074MB  ext4
+ 3      1704MB  36.5GB  34.8GB                                     lvm
+
+(parted) resizepart 3
+End?  [36.5GB]? -0
+(parted) print
+Model: VMware Virtual disk (scsi)
+Disk /dev/sda: 45.1GB
+Sector size (logical/physical): 512B/512B
+Partition Table: gpt
+Disk Flags:
+
+Number  Start   End     Size    File system  Name                  Flags
+ 1      1049kB  630MB   629MB   fat32        EFI System Partition  boot, esp
+ 2      630MB   1704MB  1074MB  ext4
+ 3      1704MB  45.1GB  43.4GB                                     lvm
+
+(parted) quit
+```
+
+Resize physical volume:
+```bash
+[root@awi-ci-01 ~]# pvresize /dev/sda3
+  Physical volume "/dev/sda3" changed
+  1 physical volume(s) resized or updated / 0 physical volume(s) not resized
+```
+
+Now the effective volumes of the machine can be extended as documented [Resize System Volumes](vgroot.md)