setting up ocfs2

requirements

zcat /proc/config.gz | grep OCFS2

install

debian

apt install ocfs2-tools

slackware

    export GUI=no
    sbopkg -i ocfs2-tools

from source

see ocfs2-source

setup

BEWARE YOU NEED TO RESPECT THE TABS, THAT’S EVEN WORSE THAN YAML!

vi /etc/ocfs2/cluster.conf # new file

cluster:
        name = xenconfs
        heartbeat_mode = local
        node_count = 3

node:
        cluster = xenconfs
        number = 1
        ip_port = 65000
        ip_address = 10.3.3.1
        name = pmr1

node:
        cluster = xenconfs
        number = 2
        ip_port = 65000
        ip_address = 10.3.3.2
        name = pmr2

node:
        cluster = xenconfs
        number = 3
        ip_port = 65000
        ip_address = 10.3.3.3
        name = pmr3

vi /etc/default/o2cb

O2CB_ENABLED=true
O2CB_BOOTCLUSTER=xenconfs

debian

#/etc/init.d/o2cb load
#/etc/init.d/o2cb online xenconfs
/etc/init.d/o2cb restart
    o2cb cluster-status
systemctl enable o2cb

/etc/init.d/ocfs2 restart
systemctl enable ocfs2

slackware

#/etc/rc.d/rc.o2cb load
#/etc/rc.d/rc.o2cb online xenconfs
/etc/rc.d/rc.o2cb restart
o2cb cluster-status

ready to go

slack1 only

mkfs.ocfs2 /dev/drbd0

all nodes

vi /etc/fstab

/dev/drbd0 /data        ocfs2   rw,noatime,nodiratime,_netdev,noauto                    0 0

mkdir /data_ocfs2/
touch /data_ocfs2/OCFS2_NOT_MOUNTED
mount /data_ocfs2/

troubleshooting

checking for GLIB - version >= 2.2.3... no
*** Could not run GLIB test program, checking why...
*** The test program failed to compile or link. See the file config.log for the
*** exact error that occured. This usually means GLIB is incorrectly installed.
configure: error: GLib 2.2.3 or better is required

==> that was in aug 2021 with wrong version 1.6.4, now oct 2021 configure passes

../include/ocfs2/ocfs2.h:57:10: fatal error: ocfs2/ocfs2_err.h: No such file or directory
   57 | #include <ocfs2/ocfs2_err.h>
      |          ^~~~~~~~~~~~~~~~~~~

==> that was with version 1.6.4. have a look at github, there’s 1.8.7

o2cb: Unknown code ____ 251 while loading cluster configuration file '/etc/ocfs2/cluster.conf'

==> respect the tabs in the config file

resources

https://slackbuilds.org/repository/14.2/system/ocfs2-tools/

https://oss.oracle.com/projects/ocfs2/dist/documentation/v1.2/ocfs2_faq.html

https://github.com/djs55/ocfs2-tools/blob/master/documentation/ocfs2_faq.txt

https://github.com/markfasheh/ocfs2-tools/blob/master/documentation/users_guide.txt

http://manpages.ubuntu.com/manpages/bionic/man5/ocfs2.cluster.conf.5.html

guides

https://www.lisenet.com/2016/o2cb-cluster-with-dual-primary-drbd-and-ocfs2-on-oracle-linux-7/

https://docs.axway.com/bundle/SecureTransport_531_InstallationGuide_allOS_en_HTML5/page/Content/InstallationGuide/SAN_card/Configuring_OCFS2_services.htm

https://oracle-base.com/articles/linux/ocfs2-on-linux

https://stackoverflow.com/questions/29835434/ocfs2-on-oracle-linux

http://muhammad-asif-dba.blogspot.com/2021/03/how-to-setup-ocfs2-on-oracle-linux.html

Howto OCFS2 https://wiki.evolix.org/HowtoOCFS2

troubles

https://support.oracle.com/knowledge/Oracle%20Linux%20and%20Virtualization/843479_1.html

https://lists.opensuse.org/archives/list/bugs@lists.opensuse.org/message/VSTCLG2A2E6OIRWI2ZCVIQDDECFUJ7RC/

https://lists.opensuse.org/archives/list/bugs@lists.opensuse.org/message/UVMUUG4GNJBWUSNOKUUGU3KCX5WC3APN/

https://marc.info/?l=ocfs2-users&m=116153949625849 ==> solved!