[Pacemaker] Cotrolled migration of resources

[Andrew Beekhof]

On Fri, Oct 29, 2010 at 4:18 AM, Matthew F. Hymowitz
<mhymowitz at gmpnet.net> wrote:
> I am building a two node active/passive cluster supporting
> iSCSITarget,iSCSILogicalUnit and ocf:linbit:drbd.   I can hard power down a
> primary node (i.e. pull the power cord ) and all my resource migrate
> correctly to the other node.   However, if I try to migrate the resoruces,
> put an active node in standby or shut a system down gracefully DRBD
> compalains to the console that drbd0 is held open by someone (it is wanting
> to switch to seocndary/secondary) .

A missing ordering constraint (that ensures something using the drbd
device gets stopped) perhaps?


> I followed  the example here:
> http://www.drbd.org/users-guide/s-pacemaker-crm.html and converted resources
> from filesystem to iscsi.   I can not figure out what is wrong with my order
> or colocation statements.  I tried every permutaition of ordering that I
> could think of.   Both systems are running debian/sid with corosync version
> 1.2.1  and pacemaker version loaded from the debian repository.  The kernel
> is version 2.6.34 with liotarget support built in.   Any help that any could
> provide would be greatly appreciated.   Thank you.   Here is my config:
>
> node sedona \
>         attributes standby="off"
> node toltec \
>         attributes standby="off"
> primitive drbdWitnessDisk ocf:linbit:drbd \
>         params drbd_resource="witnessdisk" \
>         op monitor interval="59s" role="Master" timeout="30s" \
>         op monitor interval="60s" role="Slave" timeout="30s" \
>         op start interval="0s" timeout="240s" \
>         op stop interval="0s" timeout="100"
> primitive ip_iscsi ocf:heartbeat:IPaddr2 \
>         params ip="192.168.7.5" nic="eth0"
> primitive iscsiTarget ocf:heartbeat:iSCSITarget \
>         params implementation="lio"
> iqn="iqn.2003-01.org.linux-iscsi.sedona.x86:sn.e6c51b908732"
> portals="192.168.7.5:3260"
> allowed_initiators="iqn.1991-05.com.microsoft:black-bear.****.local" \
>         op monitor interval="10s" timeout="10s"
> primitive sedona-stonith stonith:external/ipmi \
>         params hostname="sedona.********.com" ipaddr="192.168.7.10"
> userid="admin" passwd="**********" interface="lan" \
>         op start interval="0s" timeout="60s" \
>         meta target-role="Started"
> primitive toltec-stonith stonith:external/ssh \
>         params hostlist="toltec" livedangerously="yes" \
>         meta target-role="Started" \
>         op start interval="0s" timeout="60s"
> primitive witnessDiskLU ocf:heartbeat:iSCSILogicalUnit \
>         params implementation="lio"
> target_iqn="iqn.2003-01.org.linux-iscsi.sedona.x86:sn.e6c51b908732" lun="0"
> path="/dev/drbd0"
> group iscsi witnessDiskLU ip_iscsi iscsiTarget \
>         meta target-role="Started"
> ms ms-drbdWitnessDisk drbdWitnessDisk \
>         meta clone-max="2" notify="true" globally-unique="false"
> target-role="Started"
> location cli-standby-iscsi iscsi \
>         rule $id="cli-standby-rule-iscsi" -inf: #uname eq toltec
> location ms-drbdWitnessDisk-master-on-sedona-1 ms-drbdWitnessDisk \
>         rule $id="ms-drbdWitnessDisk-master-on-sedona-1-rule" $role="master"
> 100: #uname eq sedona
> location ms-drbdWitnessDisk-placement ms-drbdWitnessDisk \
>         rule $id="ms-drbdWitnessDisk-placement-rule" -inf: #uname ne sedona
> and #uname ne toltec
> location sedona-stonith-on-toltec sedona-stonith \
>         rule $id="sedona-stonith-on-toltec-rule" -INF: #uname eq sedona
> location toltec-stonith-on-sedona toltec-stonith \
>         rule $id="toltec-stonith-on-sedona-rule" -INF: #uname eq toltec
> colocation iscsi-on-msdrbdwitnessDisk inf: iscsi ms-drbdWitnessDisk:Master
> order iscsi_after_drbd inf: ms-drbdWitnessDisk:promote iscsi:start
> symmetrical=true
> property $id="cib-bootstrap-options" \
>         dc-version="1.0.9-74392a28b7f31d7ddc86689598bd23114f58978b" \
>         cluster-infrastructure="openais" \
>         expected-quorum-votes="2" \
>         no-quorum-policy="ignore" \
>         last-lrm-refresh="1288316571"
>
> Matt Hymowitz
> GMP Networks
> 520 577-3891 x 11
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