[Pacemaker] pacemaker & LIO

[Andrew Beekhof]

On Fri, Jul 27, 2012 at 12:17 AM,  <jan.zeller at id.unibe.ch> wrote:
> dear members of the pacemaker mailing list,
>
> i am using pacemaker on Debian GNU/Linux testing (wheezy) in combination with LIO [1] and DRBD. The setup heavily relies on [2].
> After fiddling around I am able to move the iscsi storage from one (storage-)node to the other successfully.
>
> With this setup [3] I unfortunately always need to create the lun mapping manually like this :
>
> /iscsi/iqn.20...:31f4493c3d6c> create mapped_lun=0 tpg_lun=0 Created Mapped LUN 0.
> Entering new node /iscsi/iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270/tpgt1/acls/iqn.2012-07.lan.xcp1:01:31f4493c3d6c/mapped_lun0
>
> /iscsi/iqn.20...:31f4493c3d6c> create mapped_lun=0 tpg_lun=0 Created Mapped LUN 0.
> Entering new node /iscsi/iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270/tpgt1/acls/iqn.2012-07.lan.xcp2:02:31f4493c3d6c/mapped_lun0

Maybe thats something the iSCSILogicalUnit or iSCSITarget should be doing?

>
>
> 'targetcli' output before
> -----------------------------
> /> ls iscsi/iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270/
> o- iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270 ............... [1 TPG]
>   o- tpgt1 .................................................................... [enabled]
>     o- acls .................................................................... [2 ACLs]
>     | o- iqn.2012-07.lan.xcp1:01:31f4493c3d6c ............................ [0 Mapped LUN]
>     | o- iqn.2012-07.lan.xcp2:02:31f4493c3d6c ............................ [0 Mapped LUN]
>     o- luns ..................................................................... [1 LUN]
>     | o- lun0 .............................................. [iblock/r_lun0 (/dev/drbd0)]
>     o- portals .............................................................. [2 Portals]
>       o- 192.168.8.14:3260 ......................................................... [OK]
>       o- 192.168.8.6:3260 .......................................................... [OK]
>
>
> 'targetcli' output after
> ---------------------------
> /> ls iscsi/iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270
> o- iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270 ............... [1 TPG]
>   o- tpgt1 .................................................................... [enabled]
>     o- acls .................................................................... [2 ACLs]
>     | o- iqn.2012-07.lan.xcp1:01:31f4493c3d6c ............................ [1 Mapped LUN]
>     | | o- mapped_lun0 ...................................................... [lun0 (rw)]
>     | o- iqn.2012-07.lan.xcp2:02:31f4493c3d6c ............................ [1 Mapped LUN]
>     |   o- mapped_lun0 ...................................................... [lun0 (rw)]
>     o- luns ..................................................................... [1 LUN]
>     | o- lun0 .............................................. [iblock/r_lun0 (/dev/drbd0)]
>     o- portals .............................................................. [2 Portals]
>       o- 192.168.8.14:3260 ......................................................... [OK]
>       o- 192.168.8.6:3260 .......................................................... [OK]
>
> Any way to get this working the pacemaker way ?
>
>
> [3]
>
> root at iscsi-tgt1:~# crm configure show
> node iscsi-tgt1
> node iscsi-tgt2
> primitive r_DRBD ocf:linbit:drbd \
>         params drbd_resource="r0" \
>         op monitor interval="10" role="Master" \
>         op monitor interval="20" role="Slave" \
>         op start interval="0" timeout="240" \
>         op stop interval="0" timeout="240"
> primitive r_iscsid ocf:heartbeat:iSCSITarget \
>         params implementation="lio" portals="192.168.8.6 192.168.8.14" iqn="iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270" allowed_initiators="iqn.2012-07.lan.xcp1:01:31f4493c3d6c iqn.2012-07.lan.xcp2:02:31f4493c3d6c"
> primitive r_lun0 ocf:heartbeat:iSCSILogicalUnit \
>         params implementation="lio" target_iqn="iqn.2012-07.org.linux-iscsi.iscsi-storage.i686:sn.d94bc9daa270" lun="0" path="/dev/drbd0" \
>         op monitor interval="30"
> primitive r_target lsb:target \
>         op monitor interval="30" timeout="30"
> primitive r_vIP-1 ocf:heartbeat:IPaddr2 \
>         params ip="192.168.8.6" cidr_netmask="255.255.255.248"
> primitive r_vIP-2 ocf:heartbeat:IPaddr2 \
>         params ip="192.168.8.14" cidr_netmask="255.255.255.248"
> group g_iscsi r_target r_iscsid r_lun0
> group g_vIP r_vIP-1 r_vIP-2
> ms ms_DRBD r_DRBD \
>         meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true" target-role="Master"
> colocation c0 inf: g_iscsi ms_DRBD:Master g_vIP order o0 inf: ms_DRBD:promote g_iscsi:start property $id="cib-bootstrap-options" \
>         dc-version="1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff" \
>         cluster-infrastructure="openais" \
>         expected-quorum-votes="2" \
>         no-quorum-policy="ignore" \
>         stonith-enabled="false" \
>         last-lrm-refresh="1343207694"
>
>
> kind regards,
>
> Jan
>
> [1] http://linux-iscsi.org
> [2] www.linbit.com/fileadmin/tech-guides/ha-iscsi.pdf
>
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