[Pacemaker] Dont start LVM or FS on DRBD Standalone

[Lars Ellenberg]

On Thu, May 19, 2011 at 09:25:43AM +0200, Pierre BLONDEAU wrote:
> Hi,
> 
> Can i detect the standalone connexion state of drbd with the primitive
> ocf:linbit:drbd ?

You can not.

Use drbd fencing mechanisms to achieve what I think you probably want.

http://www.drbd.org/users-guide/s-pacemaker-fencing.html

Please DO NOT use dual-primary DRBD for iSCSI targets.

It does not work the way you would like it to.
If you kill your data that way, do not blame DRBD.

Please DO use stonith, always,
if using drbd in dual-primary mode, anyways,
along with the "fencing resource-and-stonith" setting in drbd.

If you need some consulting there,
feel free to contact LINBIT ;-)

> Regards
> 
> Le 17/05/2011 10:49, Pierre BLONDEAU a écrit :
> > Hi,
> > 
> > I can't find how to configure pacemaker to don't put drbd on primary
> > mode when one of my nodes is standalone.
> > 
> > If i have a standalone drbd server. The second start and became
> > standalone. So pacemaker can put the second node primary and start lvm,
> > iscsi, etc ... And i have a split-brainwith my data.
> > 
> > My goal isn't to stop the lvm, the iscsi, etc. ... when a node enters
> > standalone mode, just don't run in primary mode at startup and so don't
> > start the lvm, the iscsi, etc. ...
> > 
> > Thank you in advance for your answers
> > Regards
> > 
> > My configuration :
> > node leia
> > node luke
> > primitive drbd_data ocf:linbit:drbd \
> > 	operations $id="drbd_data-operations" \
> > 	op monitor interval="20" role="Slave" timeout="20" \
> > 	op monitor interval="10" role="Master" timeout="20" \
> > 	params drbd_resource="data"
> > primitive iscsi_c3po_disk ocf:heartbeat:iSCSILogicalUnit \
> > 	operations $id="iscsi_c3po_disk-operations" \
> > 	op monitor interval="10" timeout="10" \
> > 	params target_iqn="iqn.iscsi:c3po" lun="0" path="/dev/data/c3po-disk"
> > scsi_sn="c3po-disk" additional_parameters="type=blockio"
> > primitive iscsi_c3po_target ocf:heartbeat:iSCSITarget \
> > 	operations $id="iscsi_c3po_target-operations" \
> > 	op monitor interval="10" timeout="10" \
> > 	params iqn="iqn.iscsi:c3po"
> > primitive lvm_data ocf:heartbeat:LVM \
> > 	operations $id="lvm_data-operations" \
> > 	op monitor interval="10" timeout="30" \
> > 	params volgrpname="data"
> > primitive ping_xen ocf:pacemaker:pingd \
> > 	operations $id="ping_xen-operations" \
> > 	op monitor interval="10" timeout="60" \
> > 	params host_list="192.168.7.4 192.168.7.5" multiplier="1000"
> > attempts="2" timeout="5" dampen="2"
> > group iscsi_c3po_group iscsi_c3po_target iscsi_c3po_disk
> > ms drbd_data_master drbd_data \
> > 	meta master-max="2" target-role="started" notify="true" interleave="true"
> > clone iscsi_c3po_clone iscsi_c3po_group \
> > 	meta interleave="true" target-role="started"
> > clone lvm_data_clone lvm_data \
> > 	meta interleave="true" target-role="started"
> > clone ping_xen_clone ping_xen \
> > 	meta interleave="true" target-role="started"
> > location drbd_data_master-no-ping_xen drbd_data_master \
> > 	rule $id="drbd_data_master-no-ping_xen-rule" $role="Master" -inf:
> > not_defined pingd or pingd number:lte 0
> > colocation iscsi_c3po_clone-on-lvm_data_clone : lvm_data_clone
> > iscsi_c3po_clone
> > colocation lvm_data_clone-on-drbd_data_master : drbd_data_master:Master
> > lvm_data_clone
> > order drbd_data_master-before-lvm_data_clone inf:
> > drbd_data_master:promote lvm_data_clone:start
> > order lvm_data_clone-before-iscsi_c3po_clone inf: lvm_data_clone:start
> > iscsi_c3po_clone:start
> > property $id="cib-bootstrap-options" \
> > 	dc-version="1.0.9-74392a28b7f31d7ddc86689598bd23114f58978b" \
> > 	cluster-infrastructure="openais" \
> > 	expected-quorum-votes="2" \
> > 	no-quorum-policy="ignore" \
> > 	stonith-enabled="false" \
> > 	last-lrm-refresh="1305556523"
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
> > Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> > http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> > 
> > Project Home: http://www.clusterlabs.org
> > Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> > Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
> 
> 
> -- 
> ----------------------------------------------
> Pierre BLONDEAU
> Administrateur Systèmes & réseaux
> Université de Caen
> Laboratoire GREYC, Département d'informatique
> 
> tel	: 02 31 56 73 38
> bureau	: Campus 2, Science 3, 406
> ----------------------------------------------
> 



> _______________________________________________
> Pacemaker mailing list: Pacemaker at oss.clusterlabs.org
> http://oss.clusterlabs.org/mailman/listinfo/pacemaker
> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker


-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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