# Demonstration of fence_scsi agent working in Bionic:
(k)rafaeldtinoco@clubionic01:~/.../upstream$ sudo dpkg -i ./*.deb
dpkg: warning: downgrading fence-agents from 4.4.0-2 to 4.0.25-2ubuntu1
(Reading database ... 85434 files and directories currently installed.)
Preparing to unpack .../fence-agents_4.0.25-2ubuntu1_amd64.deb ...
Unpacking fence-agents (4.0.25-2ubuntu1) over (4.4.0-2) ...
Preparing to unpack .../fence-agents_4.4.0-2_amd64.deb ...
Unpacking fence-agents (4.4.0-2) over (4.0.25-2ubuntu1) ...
Setting up fence-agents (4.4.0-2) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
(k)rafaeldtinoco@clubionic01:~/.../upstream$ sudo sg_persist --in --read-keys
--device=/dev/sda
LIO-ORG cluster.bionic. 4.0
Peripheral device type: disk
PR generation=0x0, there are NO registered reservation keys
(k)rafaeldtinoco@clubionic01:~/.../upstream$ systemctl restart pacemaker
(k)rafaeldtinoco@clubionic02:~/.../upstream$ crm_mon -1
Stack: corosync
Current DC: clubionic03.private (version 1.1.19-1.1.19) - partition with quorum
Last updated: Tue Mar 3 21:16:04 2020
Last change: Tue Mar 3 20:25:56 2020 by root via cibadmin on
clubionic01.private
3 nodes configured
1 resource configured
Online: [ clubionic01.private clubionic02.private clubionic03.private ]
Active resources:
fence_clubionic (stonith:fence_scsi): Started
clubionic01.private
(k)rafaeldtinoco@clubionic01:~/.../upstream$ sudo sg_persist --in --read-keys
--device=/dev/sda
LIO-ORG cluster.bionic. 4.0
Peripheral device type: disk
PR generation=0x3, 3 registered reservation keys follow:
0x3abe0000
0x3abe0001
0x3abe0002
(k)rafaeldtinoco@clubionic01:~/.../upstream$ sudo sg_persist -r /dev/sda
LIO-ORG cluster.bionic. 4.0
Peripheral device type: disk
PR generation=0x3, Reservation follows:
Key=0x3abe0001
scope: LU_SCOPE, type: Write Exclusive, registrants only
--
You received this bug notification because you are a member of Ubuntu
High Availability Team, which is subscribed to pacemaker in Ubuntu.
https://bugs.launchpad.net/bugs/1865523
Title:
[bionic] fence_scsi not working properly with 1.1.18-2ubuntu1.1
Status in fence-agents package in Ubuntu:
Fix Released
Status in pacemaker package in Ubuntu:
Fix Released
Status in fence-agents source package in Bionic:
Confirmed
Status in pacemaker source package in Bionic:
Confirmed
Status in fence-agents source package in Disco:
Confirmed
Status in fence-agents source package in Eoan:
Fix Released
Status in fence-agents source package in Focal:
Fix Released
Bug description:
Trying to setup a cluster with an iscsi shared disk, using fence_scsi
as the fencing mechanism, I realized that fence_scsi is not working in
Ubuntu Bionic. I first thought it was related to Azure environment
(LP: #1864419), where I was trying this environment, but then, trying
locally, I figured out that somehow pacemaker 1.1.18 is not fencing
the shared scsi disk properly.
Note: I was able to "backport" vanilla 1.1.19 from upstream and
fence_scsi worked. I have then tried 1.1.18 without all quilt patches
and it didnt work as well. I think that bisecting 1.1.18 <-> 1.1.19
might tell us which commit has fixed the behaviour needed by the
fence_scsi agent.
(k)rafaeldtinoco@clubionic01:~$ crm conf show
node 1: clubionic01.private
node 2: clubionic02.private
node 3: clubionic03.private
primitive fence_clubionic stonith:fence_scsi \
params pcmk_host_list="10.250.3.10 10.250.3.11 10.250.3.12"
devices="/dev/sda" \
meta provides=unfencing
property cib-bootstrap-options: \
have-watchdog=false \
dc-version=1.1.18-2b07d5c5a9 \
cluster-infrastructure=corosync \
cluster-name=clubionic \
stonith-enabled=on \
stonith-action=off \
no-quorum-policy=stop \
symmetric-cluster=true
----
(k)rafaeldtinoco@clubionic02:~$ sudo crm_mon -1
Stack: corosync
Current DC: clubionic01.private (version 1.1.18-2b07d5c5a9) - partition with
quorum
Last updated: Mon Mar 2 15:55:30 2020
Last change: Mon Mar 2 15:45:33 2020 by root via cibadmin on
clubionic01.private
3 nodes configured
1 resource configured
Online: [ clubionic01.private clubionic02.private clubionic03.private
]
Active resources:
fence_clubionic (stonith:fence_scsi): Started
clubionic01.private
----
(k)rafaeldtinoco@clubionic02:~$ sudo sg_persist --in --read-keys
--device=/dev/sda
LIO-ORG cluster.bionic. 4.0
Peripheral device type: disk
PR generation=0x0, there are NO registered reservation keys
(k)rafaeldtinoco@clubionic02:~$ sudo sg_persist -r /dev/sda
LIO-ORG cluster.bionic. 4.0
Peripheral device type: disk
PR generation=0x0, there is NO reservation held
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