<div dir="ltr"><font face="monospace">Hi Roland,</font><div><font face="monospace"><br>Thank you for your answer and time. I've been looking for the auto-resync-after-disable parameter without any luck. I'm using this command to search for it `linstor controller drbd-options -h`. </font></div><div><font face="monospace">So it seems that I'll have to build a resync chain since my physical resources aren't able to handle the full sync without affecting the business app.</font></div><div><font face="monospace"><br></font></div><div><font face="monospace">Thanks and regards,</font></div><div><font face="monospace">Ferran</font></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Missatge de Roland Kammerer <<a href="mailto:roland.kammerer@linbit.com">roland.kammerer@linbit.com</a>> del dia dv., 15 de set. 2023 a les 10:35:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Fri, Sep 15, 2023 at 09:53:44AM +0200, Ferran Alchimia wrote:<br>
> We have 39 defined resoruces using the same settings. And all these<br>
> resources are running on the same RAID supported by two physical nvme ssd<br>
> drives.<br>
> We have two combined hosts and a diskless satellite host. The network card<br>
> between the two hosts is a 1Gb card.<br>
> <br>
> I have read the following guide<br>
> <a href="https://kb.linbit.com/tuning-drbds-resync-controller" rel="noreferrer" target="_blank">https://kb.linbit.com/tuning-drbds-resync-controller</a> and I think our<br>
> current installation might have to be tuned in order to avoid those<br>
> application hungs.<br>
<br>
yes, obviously it is a good idea to check these settings, some defaults<br>
are a bit outdated for modern systems.<br>
<br>
In general there is also a "resync-after" setting where you can build a<br>
"resync chain" of resources, so that not all resources start syncing at<br>
the same time, but after each other in the defined order.<br>
<br>
Your setup looks like a Proxmox setup so you use LINSTOR, and it has a<br>
"DrbdOptions/auto-resync-after-disable" option. You might want to try if<br>
that helps and is good enough for you. disclaimer: I know it was enabled<br>
by default in a release and pulled back afterwards, but things might<br>
have improved enough, at least in such medium sized scenarios.<br>
<br>
Regards, rck<br>
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