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Expand documentation for swap with ZFS.

Browse Source 
and add an anchor for referencing in pve-installation.adoc

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
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Stoiko Ivanov 2018-11-23 18:24:03 +01:00 committed by Dietmar Maurer
parent 51778acdd5
commit dc74fc6389
1 changed files with 6 additions and 2 deletions
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local-zfs.adoc
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@ -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