# Demonstration of fence_scsi fencing a node:
(k)rafaeldtinoco@clubionic03:~/.../upstream$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
# iscsi
auto eth1
iface eth1 inet static
address 10.250.1.12/24
# private
auto eth2
iface eth2 inet static
address 10.250.3.12/24
# public
auto eth3
iface eth3 inet static
address 10.250.98.12/24
(k)rafaeldtinoco@clubionic03:~/.../upstream$ sudo iptables -A INPUT -i
eth2 -j DROP
(k)rafaeldtinoco@clubionic01:~$ crm_mon -1
Stack: corosync
Current DC: clubionic01.private (version 1.1.19-1.1.19) - partition with quorum
Last updated: Tue Mar 3 21:24:55 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 ]
OFFLINE: [ clubionic03.private ]
Active resources:
fence_clubionic (stonith:fence_scsi): Started
clubionic01.private
(k)rafaeldtinoco@clubionic03:~/.../upstream$ sudo sg_persist --in --read-keys
--device=/dev/sda
LIO-ORG cluster.bionic. 4.0
Peripheral device type: disk
PR generation=0x4, 2 registered reservation keys follow:
0x3abe0000
0x3abe0001
(k)rafaeldtinoco@clubionic03:~/.../upstream$ sudo dd if=/dev/zero of=/dev/sda
bs=1M count=1
[ 3301.867294] print_req_error: critical nexus error, dev sda, sector 0
[ 3301.868543] Buffer I/O error on dev sda, logical block 0, lost async page
write
[ 3301.869956] Buffer I/O error on dev sda, logical block 1, lost async page
write
[ 3301.871430] Buffer I/O error on dev sda, logical block 2, lost async page
write
[ 3301.872929] Buffer I/O error on dev sda, logical block 3, lost async page
write
[ 3301.874448] Buffer I/O error on dev sda, logical block 4, lost async page
write
[ 3301.875963] Buffer I/O error on dev sda, logical block 5, lost async page
write
[ 3301.877486] Buffer I/O error on dev sda, logical block 6, lost async page
write
[ 3301.879000] Buffer I/O error on dev sda, logical block 7, lost async page
write
[ 3301.880481] Buffer I/O error on dev sda, logical block 8, lost async page
write
[ 3301.882014] Buffer I/O error on dev sda, logical block 9, lost async page
write
1+0 records in
1+0 records out
1048576 bytes (1.0 MB, 1.0 MiB) copied, 0.0227557 s, 46.1 MB/s
--
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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