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+# Partitioning
+
+## Default Partitioning
+
+Partitions system are configured with a standard schema using LVM, so that they can be possibly changed afterwards.
+
+By default the whole space available on the first block device is used and any existing partition is removed.
+
+Alternatively you might set the sysdb attribute `system_disk` with the device name of the disk which should be used instead::
+
+```bash
+bob node set-attr $FQDN system_disk=md126
+```
+
+### RHEL7
+The default partition schema for RHEL7 is:
+
+- create one primary ``/boot`` partition of 1Gb;
+- create the ``vg_root`` Volume Group that uses the rest of the disk;
+- on ``vg_root`` create the following logical volumes:
+    - ``lv_root`` of 12 Gb size for ``/root``;
+    - ``lv_var`` of 8 Gb size for ``/var``;
+    - ``lv_var_log`` of 2 Gb size for ``/var/log``;
+    - ``lv_tmp`` of 2 Gb size for ``/tmp``.
+
+### RHEL8
+The default partition schema for RHEL8 is:
+
+   - create one primary ``/boot`` partition of 1Gb;
+   - create the ``vg_root`` Volume Group that uses the rest of the disk;
+   - on ``vg_root`` create the following logical volumes:
+       - ``lv_root`` of 14 Gb size for ``/root``;
+       - ``lv_home`` of 2 Gb size for ``/home``;
+       - ``lv_var`` of 8 Gb size for ``/var``;
+       - ``lv_var_log`` of 3 Gb size for ``/var/log``;
+       - ``lv_var_tmp`` of 2 Gb size for ``/var/log``;
+       - ``lv_tmp`` of 2 Gb size for ``/tmp``.
+
+
+# Custom Partitioning
+
+It is possible to customize the partitioning by using the `partitions` attribute on sysdb. See https://git.psi.ch/linux-infra/bob for more details.