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Integrating iSCSI service to DRBD for iSCSI failover

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boyin_net at yahoo

Oct 27, 2009, 2:28 AM

Post #1 of 5 (336 views)
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Integrating iSCSI service to DRBD for iSCSI failover

Hi

I am a naive user of pacemaker and have been trying to achieve iSCSI failover on Pacemaker. I have tried couple of things though, which logically looks fine. But, I am not able to get any progress in this. So, I wanted to share this problem with you and help me sort out the problem.

This is how my CIB file looks like :

node $id="1c96735b-59c8-47d9-a2c6-cd2a2731d936" drbd_desk1 \
attributes standby="off"
node $id="b8c4fa16-df49-45b7-a850-cb9f65af036e" drbd_desk2 \
attributes standby="off"
primitive drbd_test ocf:linbit:drbd \
params drbd_resource="r0" \
op monitor interval="15s" \
meta target-role="started"
primitive ip_drbd ocf:heartbeat:IPaddr2 \
params ip="192.168.30.33" nic="eth0" \
meta target-role="started"
primitive iscsiLU ocf:heartbeat:iSCSILogicalUnit \
params lun="0" path="/dev/drbd0" target_iqn="iqn.2009-10.com.systems:Testme" \
meta target-role="started"
primitive iscsiTG ocf:heartbeat:iSCSITarget \
params iqn="iqn.2009-10.com.systems:Testme" tid="1" \
meta target-role="started"
group drbd_group ip_drbd iscsiTG iscsiLU
ms ms_DRBD drbd_test \
meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true"
property $id="cib-bootstrap-options" \
dc-version="1.0.5-462f1569a43740667daf7b0f6b521742e9eb8fa7" \
cluster-infrastructure="openais" \
no-quorum-policy="ignore" \
stonith-enabled="false" \
default-resource-stickiness="1000" \
expected-quorum-votes="2" \
last-lrm-refresh="1256633765"

crm_mon shows perfectly fine when both the nodes are up and shows all services are running.

I powered off the master (desk2 at present), desk1 becomes master fine, but the iscsiLU resource is seen 'Stopped' at this machine. I think this service is not migrated here.

Can anyone guide me thtough this ?

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andrew at beekhof

Oct 28, 2009, 1:06 PM

Post #2 of 5 (313 views)
Permalink

Re: Integrating iSCSI service to DRBD for iSCSI failover [In reply to]

On Tue, Oct 27, 2009 at 11:28 AM, sajan agrawal <boyin_net[at]yahoo.com> wrote:
> Hi
>
> I am a naive user of pacemaker and have been trying to achieve iSCSI failover on Pacemaker. I have tried couple of things though, which logically looks fine. But, I am not able to get any progress in this. So, I wanted to share this problem with you and help me sort out the problem.
>
> This is how my CIB file looks like :
>
> node $id="1c96735b-59c8-47d9-a2c6-cd2a2731d936" drbd_desk1 \
> attributes standby="off"
> node $id="b8c4fa16-df49-45b7-a850-cb9f65af036e" drbd_desk2 \
> attributes standby="off"
> primitive drbd_test ocf:linbit:drbd \
> params drbd_resource="r0" \
> op monitor interval="15s" \
> meta target-role="started"
> primitive ip_drbd ocf:heartbeat:IPaddr2 \
> params ip="192.168.30.33" nic="eth0" \
> meta target-role="started"
> primitive iscsiLU ocf:heartbeat:iSCSILogicalUnit \
> params lun="0" path="/dev/drbd0" target_iqn="iqn.2009-10.com.systems:Testme" \
> meta target-role="started"
> primitive iscsiTG ocf:heartbeat:iSCSITarget \
> params iqn="iqn.2009-10.com.systems:Testme" tid="1" \
> meta target-role="started"
> group drbd_group ip_drbd iscsiTG iscsiLU
> ms ms_DRBD drbd_test \
> meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true"
> property $id="cib-bootstrap-options" \
> dc-version="1.0.5-462f1569a43740667daf7b0f6b521742e9eb8fa7" \
> cluster-infrastructure="openais" \
> no-quorum-policy="ignore" \
> stonith-enabled="false" \
> default-resource-stickiness="1000" \
> expected-quorum-votes="2" \
> last-lrm-refresh="1256633765"
>
>
> crm_mon shows perfectly fine when both the nodes are up and shows all services are running.
>
> I powered off the master (desk2 at present), desk1 becomes master fine, but the iscsiLU resource is seen 'Stopped' at this machine. I think this service is not migrated here.
>
> Can anyone guide me thtough this ?
>

Not without logs or the output from 'cibadmin -Q' while the cluster is
in the state you describe.
_______________________________________________
Linux-HA mailing list
Linux-HA[at]lists.linux-ha.org
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems

boyin_net at yahoo

Oct 30, 2009, 12:38 AM

Post #3 of 5 (305 views)
Permalink

Re: Integrating iSCSI service to DRBD for iSCSI failover [In reply to]

Hi

Sorry for replying late.. i had to recreate this situation and generate the
log. I have the full report of the logs. I am uploading the output of
"cibadmin -Q".
Let me know if any other logs will help, i will upload them.

Thank you

Andrew Beekhof-3 wrote:
>
> On Tue, Oct 27, 2009 at 11:28 AM, sajan agrawal <boyin_net[at]yahoo.com>
> wrote:
>> Hi
>>
>> I am a naive user of pacemaker and have been trying to achieve iSCSI
>> failover on Pacemaker. I have tried couple of things though, which
>> logically looks fine. But, I am not able to get any progress in this. So,
>> I wanted to share this problem with you and help me sort out the problem.
>>
>> This is how my CIB file looks like :
>>
>> node $id="1c96735b-59c8-47d9-a2c6-cd2a2731d936" drbd_desk1 \
>> Â Â Â Â attributes standby="off"
>> node $id="b8c4fa16-df49-45b7-a850-cb9f65af036e" drbd_desk2 \
>> Â Â Â Â attributes standby="off"
>> primitive drbd_test ocf:linbit:drbd \
>> Â Â Â Â params drbd_resource="r0" \
>> Â Â Â Â op monitor interval="15s" \
>> Â Â Â Â meta target-role="started"
>> primitive ip_drbd ocf:heartbeat:IPaddr2 \
>> Â Â Â Â params ip="192.168.30.33" nic="eth0" \
>> Â Â Â Â meta target-role="started"
>> primitive iscsiLU ocf:heartbeat:iSCSILogicalUnit \
>> Â Â Â Â params lun="0" path="/dev/drbd0"
>> target_iqn="iqn.2009-10.com.systems:Testme" \
>> Â Â Â Â meta target-role="started"
>> primitive iscsiTG ocf:heartbeat:iSCSITarget \
>> Â Â Â Â params iqn="iqn.2009-10.com.systems:Testme" tid="1" \
>> Â Â Â Â meta target-role="started"
>> group drbd_group ip_drbd iscsiTG iscsiLU
>> ms ms_DRBD drbd_test \
>> Â Â Â Â meta master-max="1" master-node-max="1" clone-max="2"
>> clone-node-max="1" notify="true"
>> property $id="cib-bootstrap-options" \
>> Â Â Â Â dc-version="1.0.5-462f1569a43740667daf7b0f6b521742e9eb8fa7" \
>> Â Â Â Â cluster-infrastructure="openais" \
>> Â Â Â Â no-quorum-policy="ignore" \
>> Â Â Â Â stonith-enabled="false" \
>> Â Â Â Â default-resource-stickiness="1000" \
>> Â Â Â Â expected-quorum-votes="2" \
>> Â Â Â Â last-lrm-refresh="1256633765"
>>
>>
>> crm_mon shows perfectly fine when both the nodes are up and shows all
>> services are running.
>>
>> I powered off the master (desk2 at present), desk1 becomes master fine,
>> but the iscsiLU resource is seen 'Stopped' at this machine. I think this
>> service is not migrated here.
>>
>> Can anyone guide me thtough this ?
>>
>
> Not without logs or the output from 'cibadmin -Q' while the cluster is
> in the state you describe.
> _______________________________________________
> Linux-HA mailing list
> Linux-HA[at]lists.linux-ha.org
> http://lists.linux-ha.org/mailman/listinfo/linux-ha
> See also: http://linux-ha.org/ReportingProblems
>
>
http://old.nabble.com/file/p26126045/cibadm%2B-Q cibadm+-Q
--
View this message in context: http://old.nabble.com/Integrating-iSCSI--service-to-DRBD-for-iSCSI-failover-tp26074559p26126045.html
Sent from the Linux-HA mailing list archive at Nabble.com.

_______________________________________________
Linux-HA mailing list
Linux-HA[at]lists.linux-ha.org
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems

boyin_net at yahoo

Nov 1, 2009, 9:57 PM

Post #4 of 5 (266 views)
Permalink

Re: Integrating iSCSI service to DRBD for iSCSI failover [In reply to]

Hi

I really needed a solution to this problem. Any other configuration for
iSCSI failover will also be helpful. I am not able to figure out where the
issue lies.

sajanagr wrote:
>
> Hi
>
> Sorry for replying late.. i had to recreate this situation and generate
> the log. I have the full report of the logs. I am uploading the output of
> "cibadmin -Q".
> Let me know if any other logs will help, i will upload them.
>
> Thank you
>
>
> Andrew Beekhof-3 wrote:
>>
>> On Tue, Oct 27, 2009 at 11:28 AM, sajan agrawal <boyin_net[at]yahoo.com>
>> wrote:
>>> Hi
>>>
>>> I am a naive user of pacemaker and have been trying to achieve iSCSI
>>> failover on Pacemaker. I have tried couple of things though, which
>>> logically looks fine. But, I am not able to get any progress in this.
>>> So, I wanted to share this problem with you and help me sort out the
>>> problem.
>>>
>>> This is how my CIB file looks like :
>>>
>>> node $id="1c96735b-59c8-47d9-a2c6-cd2a2731d936" drbd_desk1 \
>>> Â Â Â Â attributes standby="off"
>>> node $id="b8c4fa16-df49-45b7-a850-cb9f65af036e" drbd_desk2 \
>>> Â Â Â Â attributes standby="off"
>>> primitive drbd_test ocf:linbit:drbd \
>>> Â Â Â Â params drbd_resource="r0" \
>>> Â Â Â Â op monitor interval="15s" \
>>> Â Â Â Â meta target-role="started"
>>> primitive ip_drbd ocf:heartbeat:IPaddr2 \
>>> Â Â Â Â params ip="192.168.30.33" nic="eth0" \
>>> Â Â Â Â meta target-role="started"
>>> primitive iscsiLU ocf:heartbeat:iSCSILogicalUnit \
>>> Â Â Â Â params lun="0" path="/dev/drbd0"
>>> target_iqn="iqn.2009-10.com.systems:Testme" \
>>> Â Â Â Â meta target-role="started"
>>> primitive iscsiTG ocf:heartbeat:iSCSITarget \
>>> Â Â Â Â params iqn="iqn.2009-10.com.systems:Testme" tid="1" \
>>> Â Â Â Â meta target-role="started"
>>> group drbd_group ip_drbd iscsiTG iscsiLU
>>> ms ms_DRBD drbd_test \
>>> Â Â Â Â meta master-max="1" master-node-max="1" clone-max="2"
>>> clone-node-max="1" notify="true"
>>> property $id="cib-bootstrap-options" \
>>> Â Â Â Â dc-version="1.0.5-462f1569a43740667daf7b0f6b521742e9eb8fa7" \
>>> Â Â Â Â cluster-infrastructure="openais" \
>>> Â Â Â Â no-quorum-policy="ignore" \
>>> Â Â Â Â stonith-enabled="false" \
>>> Â Â Â Â default-resource-stickiness="1000" \
>>> Â Â Â Â expected-quorum-votes="2" \
>>> Â Â Â Â last-lrm-refresh="1256633765"
>>>
>>>
>>> crm_mon shows perfectly fine when both the nodes are up and shows all
>>> services are running.
>>>
>>> I powered off the master (desk2 at present), desk1 becomes master fine,
>>> but the iscsiLU resource is seen 'Stopped' at this machine. I think this
>>> service is not migrated here.
>>>
>>> Can anyone guide me thtough this ?
>>>
>>
>> Not without logs or the output from 'cibadmin -Q' while the cluster is
>> in the state you describe.
>> _______________________________________________
>> Linux-HA mailing list
>> Linux-HA[at]lists.linux-ha.org
>> http://lists.linux-ha.org/mailman/listinfo/linux-ha
>> See also: http://linux-ha.org/ReportingProblems
>>
>>
> http://old.nabble.com/file/p26126045/cibadm%2B-Q cibadm+-Q
>

--
View this message in context: http://old.nabble.com/Integrating-iSCSI--service-to-DRBD-for-iSCSI-failover-tp26074559p26156032.html
Sent from the Linux-HA mailing list archive at Nabble.com.

_______________________________________________
Linux-HA mailing list
Linux-HA[at]lists.linux-ha.org
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems

andrew at beekhof

Nov 9, 2009, 5:18 AM

Post #5 of 5 (189 views)
Permalink

Re: Integrating iSCSI service to DRBD for iSCSI failover [In reply to]

On Fri, Oct 30, 2009 at 8:38 AM, sajanagr <boyin_net[at]yahoo.com> wrote:
>
> Hi
>
> Sorry for replying late.. i had to recreate this situation and generate the
> log. I have the full report of the logs. I am uploading the output of
> "cibadmin -Q".
> Let me know if any other logs will help, i will upload them.

Well its not going to do anything while there are failed stop operations:
Resource Group: drbd_group
ip_drbd (ocf::heartbeat:IPaddr2): Started drbd_desk1.com
iscsiTG (ocf::heartbeat:iSCSITarget) Started
[ drbd_desk1.com drbd_desk2.com ]
iscsiLU (ocf::heartbeat:iSCSILogicalUnit): Stopped

Failed actions:
iscsiTG_stop_0 (node=drbd_desk1.com, call=6, rc=1,
status=complete): unknown error
iscsiTG_stop_0 (node=drbd_desk2.com, call=6, rc=1,
status=complete): unknown error

iscsiLU can't be located with iscsiTG on two machines simultaneously.

Looks like the iSCSITarget agent is broken in some way.

> Andrew Beekhof-3 wrote:
>>
>> On Tue, Oct 27, 2009 at 11:28 AM, sajan agrawal <boyin_net[at]yahoo.com>
>> wrote:
>>> Hi
>>>
>>> I am a naive user of pacemaker and have been trying to achieve iSCSI
>>> failover on Pacemaker. I have tried couple of things though, which
>>> logically looks fine. But, I am not able to get any progress in this. So,
>>> I wanted to share this problem with you and help me sort out the problem.
>>>
>>> This is how my CIB file looks like :
>>>
>>> node $id="1c96735b-59c8-47d9-a2c6-cd2a2731d936" drbd_desk1 \
>>> attributes standby="off"
>>> node $id="b8c4fa16-df49-45b7-a850-cb9f65af036e" drbd_desk2 \
>>> attributes standby="off"
>>> primitive drbd_test ocf:linbit:drbd \
>>> params drbd_resource="r0" \
>>> op monitor interval="15s" \
>>> meta target-role="started"
>>> primitive ip_drbd ocf:heartbeat:IPaddr2 \
>>> params ip="192.168.30.33" nic="eth0" \
>>> meta target-role="started"
>>> primitive iscsiLU ocf:heartbeat:iSCSILogicalUnit \
>>> params lun="0" path="/dev/drbd0"
>>> target_iqn="iqn.2009-10.com.systems:Testme" \
>>> meta target-role="started"
>>> primitive iscsiTG ocf:heartbeat:iSCSITarget \
>>> params iqn="iqn.2009-10.com.systems:Testme" tid="1" \
>>> meta target-role="started"
>>> group drbd_group ip_drbd iscsiTG iscsiLU
>>> ms ms_DRBD drbd_test \
>>> meta master-max="1" master-node-max="1" clone-max="2"
>>> clone-node-max="1" notify="true"
>>> property $id="cib-bootstrap-options" \
>>> dc-version="1.0.5-462f1569a43740667daf7b0f6b521742e9eb8fa7" \
>>> cluster-infrastructure="openais" \
>>> no-quorum-policy="ignore" \
>>> stonith-enabled="false" \
>>> default-resource-stickiness="1000" \
>>> expected-quorum-votes="2" \
>>> last-lrm-refresh="1256633765"
>>>
>>>
>>> crm_mon shows perfectly fine when both the nodes are up and shows all
>>> services are running.
>>>
>>> I powered off the master (desk2 at present), desk1 becomes master fine,
>>> but the iscsiLU resource is seen 'Stopped' at this machine. I think this
>>> service is not migrated here.
>>>
>>> Can anyone guide me thtough this ?
>>>
>>
>> Not without logs or the output from 'cibadmin -Q' while the cluster is
>> in the state you describe.
>> _______________________________________________
>> Linux-HA mailing list
>> Linux-HA[at]lists.linux-ha.org
>> http://lists.linux-ha.org/mailman/listinfo/linux-ha
>> See also: http://linux-ha.org/ReportingProblems
>>
>>
> http://old.nabble.com/file/p26126045/cibadm%2B-Q cibadm+-Q
> --
> View this message in context: http://old.nabble.com/Integrating-iSCSI--service-to-DRBD-for-iSCSI-failover-tp26074559p26126045.html
> Sent from the Linux-HA mailing list archive at Nabble.com.
>
> _______________________________________________
> Linux-HA mailing list
> Linux-HA[at]lists.linux-ha.org
> http://lists.linux-ha.org/mailman/listinfo/linux-ha
> See also: http://linux-ha.org/ReportingProblems
_______________________________________________
Linux-HA mailing list
Linux-HA[at]lists.linux-ha.org
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems

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