Commit c561a8f0 authored by Hrvoje Ribicic's avatar Hrvoje Ribicic

Mention preferred DRBD module settings when using Xen

Add a mention into the install file, and provide a link to the official
DRBD documentation.
Signed-off-by: default avatarHrvoje Ribicic <riba@google.com>
Reviewed-by: default avatarPetr Pudlak <pudlak@google.com>
parent 4d6beafa
......@@ -251,7 +251,11 @@ your instances to DRBD to take advantage of the new features.
Supported DRBD versions: 8.0-8.4. It's recommended to have at least
version 8.0.12. Note that for version 8.2 and newer it is needed to pass
the ``usermode_helper=/bin/true`` parameter to the module, either by
configuring ``/etc/modules`` or when inserting it manually.
configuring ``/etc/modules`` or when inserting it manually. When using
Xen and DRBD 8.3.2 or higher, it is recommended_ to use the
``disable_sendpage=1`` setting as well.
.. _recommended: https://drbd.linbit.com/users-guide/s-xen-drbd-mod-params.html
Now the bad news: unless your distribution already provides it
installing DRBD might involve recompiling your kernel or anyway fiddling
......
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