installation: document `ARC max size` option for ZFS-on-root installations

This has been part of the installer since the 8.1 release.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>

diff --git a/pve-installation.adoc b/pve-installation.adoc
index 2c034d6f5b6b7123ace3127d7707e97aa1b590ff..72914208fc82baf1b4fd1d57ec3286009726cdaf 100644 (file)
--- a/pve-installation.adoc
+++ b/pve-installation.adoc
@@ -319,6 +319,13 @@ Defines which checksumming algorithm should be used for `rpool`.
 Defines the `copies` parameter for `rpool`. Check the `zfs(8)` manpage for the
 semantics, and why this does not replace redundancy on disk-level.
 
+`ARC max size`::
+
+Defines the maximum size the ARC can grow to and thus limits the amount of
+memory ZFS will use. See also the section on
+xref:sysadmin_zfs_limit_memory_usage[how to limit ZFS memory usage] for more
+details.
+
 `hdsize`::
 
 Defines the total hard disk size to be used. This is useful to save free space