[ClusterLabs] DRBD + VDO HowTo?

Fri May 14 04:41:05 EDT 2021

There is no VDO RA according to my knowledge, but you can use systemd service as a resource.
Yet, the VDO service that comes with thr OS is a generic one and controlls all VDOs - so you need to create your own vdo service.
Best Regards,Strahil Nikolov

  On Fri, May 14, 2021 at 6:55, Eric Robinson<eric.robinson at psmnv.com> wrote:   #yiv6406426161 #yiv6406426161 -- _filtered {} _filtered {}#yiv6406426161 #yiv6406426161 p.yiv6406426161MsoNormal, #yiv6406426161 li.yiv6406426161MsoNormal, #yiv6406426161 div.yiv6406426161MsoNormal {margin:0in;font-size:11.0pt;font-family:sans-serif;}#yiv6406426161 a:link, #yiv6406426161 span.yiv6406426161MsoHyperlink {color:blue;text-decoration:underline;}#yiv6406426161 p.yiv6406426161msonormal, #yiv6406426161 li.yiv6406426161msonormal, #yiv6406426161 div.yiv6406426161msonormal {margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:sans-serif;}#yiv6406426161 span.yiv6406426161EmailStyle28 {font-family:sans-serif;color:windowtext;}#yiv6406426161 .yiv6406426161MsoChpDefault {font-family:sans-serif;} _filtered {}#yiv6406426161 div.yiv6406426161WordSection1 {}#yiv6406426161 
I created the VDO volumes fine on the drbd devices, formatted them as xfs filesystems, created cluster filesystem resources, and the cluster us using them. But the cluster won’t fail over. Is there a VDO cluster RA out there somewhere already?

From: Strahil Nikolov <hunter86_bg at yahoo.com> 
Sent: Thursday, May 13, 2021 10:07 PM
To: Cluster Labs - All topics related to open-source clustering welcomed <users at clusterlabs.org>; Eric Robinson <eric.robinson at psmnv.com>
Subject: Re: [ClusterLabs] DRBD + VDO HowTo?

For DRBD there is enough info, so let's focus on VDO.

There is a systemd service that starts all VDOs on the system. You can create the VDO once drbs is open for writes and then you can create your own systemd '.service' file which can be used as a cluster resource.

Best Regards,

Strahil Nikolov

On Fri, May 14, 2021 at 2:33, Eric Robinson

<eric.robinson at psmnv.com> wrote:

Can anyone point to a document on how to use VDO de-duplication with DRBD? Linbit has a blog page about it, but it was last updated 6 years ago and the embedded links are dead.

https://linbit.com/blog/albireo-virtual-data-optimizer-vdo-on-drbd/

-Eric

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