From dc74fc6389600424469210d6b94ee437f5fc7895 Mon Sep 17 00:00:00 2001 From: Stoiko Ivanov Date: Fri, 23 Nov 2018 18:24:03 +0100 Subject: [PATCH 1/1] Expand documentation for swap with ZFS. and add an anchor for referencing in pve-installation.adoc Signed-off-by: Stoiko Ivanov --- local-zfs.adoc | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/local-zfs.adoc b/local-zfs.adoc index a5d2fc1..13f6050 100644 --- a/local-zfs.adoc +++ b/local-zfs.adoc @@ -307,14 +307,18 @@ time this value changes: ==== +[[zfs_swap]] .SWAP on ZFS -SWAP on ZFS on Linux may generate some troubles, like blocking the +Swap-space created on a zvol may generate some troubles, like blocking the server or generating a high IO load, often seen when starting a Backup to an external Storage. We strongly recommend to use enough memory, so that you normally do not -run into low memory situations. Additionally, you can lower the +run into low memory situations. Should you need or want to add swap, it is +preferred to create a partition on a physical disk and use it as swapdevice. +You can leave some space free for this purpose in the advanced options of the +installer. Additionally, you can lower the ``swappiness'' value. A good value for servers is 10: sysctl -w vm.swappiness=10 -- 2.39.2