Il 05/09/2018 16:03, Roland Kammerer ha scritto:
On Wed, Sep 05, 2018 at 03:35:44PM +0200, Roberto Resoli wrote:
Il 05/09/2018 09:58, Roberto Resoli ha scritto:
[Unit]
After=
After=network-online.target drbd.service
A correction: according to
man 5 systemd.unit :
"Note that dependencies (After=, etc.) cannot be reset to an empty list, so
dependencies can only be added in drop-ins. If you want to remove
dependencies, you have to override the entire
unit."
I have re-edited linsor-satellite unit ovverride as follows:
[Unit]
After=drbd.service
[Service]
ExecStart=
ExecStart=/usr/share/linstor-server/bin/Satellite
--logs=/var/log/linstor-satellite --config-directory=/etc/linstor
--keep-res=vm-200
I thought we only have to handle the case for the resource where the
controller VM is stored to. My reasoning was that basically both
services can start at the same time. The important res is the one from
the controller VM. It is not deleted and certainly brought up by
drbd.service. For the rest I thought "don't care" is good enough. If the
res files are there, drbd.service brings them up, if not, the satellite
brings them up (actually does an adjust) when first contacted by the
controller.
I agree; I read in "man 8 drbd":
====
SYNOPSIS
/etc/init.d/drbd [resource]
{{start} | {stop} | {status} | {reload} |
{restart} | {force-reload}}
INTRODUCTION
The /etc/init.d/drbd script is used to start and stop drbd on a
system
V style init system.
In order to use /etc/init.d/drbd you must define a resource, a host,
and any other configuration options in the drbd configuration
file. See
/etc/drbd.conf for details. If resource is omitted, then all of the
resources listed in the config file are configured.
====
So it should be possible to start/stop une resource only.
Unfortunatetely, that man page seems no more actual, and the current
drbd script used in drbd unit (/lib/drbd/drbd) does not support anymore
the resource poaram.
So at least I thought that after the first contact from the controller,
all resources should be up.
For now, maybe for ever, we should just serialize startup the way you
did it. That is quite obvious a solution, but I thought it is not
necessary. Having two services operate on the same files probably is not
a good idea anyways.
Yes
So thank you for testing this whole thing, I will add the "After" part
to the doc.
You're welcome.
rob
Regards, rck
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