OCFS2

WHAT IS OCFS2?

OCFS2 is the next generation of the Oracle Cluster File System for Linux. It allows you to mount volumes on different hosts at the same time. It is an extent based, POSIX compliant file system. OCFS2 is a general-purpose file system that can be used for shared Oracle home installations making management of Oracle Real Application Cluster (RAC) installations even easier. Among the new features and benefits are:

Node and architecture local files using Context Dependent Symbolic Links (CDSL) Network based pluggable DLM Improved journaling / node recovery using the Linux Kernel "JBD" subsystem Improved performance of meta-data operations (space allocation, locking, etc). Improved data caching / locking (for files such as oracle binaries, libraries, etc)

Installimine on lihtne, eriti RedHatiga ;)

Vaadake, mis kerneli jaoks ka tõmbate ;)

wget http://oss.oracle.com/projects/ocfs2/dist/files/RedHat/RHEL4/x86_64/1.2.5-1/2.6.9-42.EL/ocfs2-2.6.9-42.ELsmp-1.2.5-1.x86_64.rpm
wget http://oss.oracle.com/projects/ocfs2-tools/dist/files/RedHat/RHEL4/x86_64/1.2.4-1/ocfs2-tools-1.2.4-1.x86_64.rpm
wget http://oss.oracle.com/projects/ocfs2-tools/dist/files/RedHat/RHEL4/x86_64/1.2.4-1/ocfs2console-1.2.4-1.x86_64.rpm
rpm -i ocfs2*

Kes tahab sortsust kokku lasta, siis selleks ka võimalus
http://oss.oracle.com/projects/ocfs2/files/source/

Et kõik moodulid masina buutimisel üles laetakse, tuleb käivitada

/etc/init.d/o2cb configure

/etc/init.d/o2cb load

chkconfig ocfs2 on
chkconfig o2cb on

Oracle on valmis teinud ka kena GUI "ocfs2console" confifail asub /etc/ocfs2/cluster.conf

more /etc/ocfs2/cluster.conf

node:
       ip_port = 7777
       ip_address = 10.1.5.196
       number = 0
       name = nfs1
       cluster = ocfs2

node:
       ip_port = 7777
       ip_address = 10.1.5.197
       number = 1
       name = nfs2
       cluster = ocfs2

cluster:
       node_count = 2
       name = ocfs2

ocfs2 failisüsteemi tegemiseks kettale on käsk mkfs.ocfs2

Kui mõlemas masinas ettevalmistused tehtud, siis polegi midagi muud jäänud kui:

/etc/init.d/o2cb online ocfs2

alati saab ka staatust vaadata

/etc/init.d/o2cb status

Kui klaster on confitud buutimisel laadima, saab klastrit startida/peatada /etc/init.d/o2cb start/stop