OCFS2/iSCSI for OS-2008

Playing songs with XMMS on OCFS2 connected to Playstation3/iSCSI Viewing images with a Nokia N800 over a cluster filesystem on 802.11g wireless OCFS2 v1.3.3 and Core-iSCSI v1.6.2.10 on OS-2008

The Oracle Cluster Filesytem v2 and Internet Small Computer Systems Interface (iSCSI) on WiFI networks prototype is up and running. For more information on cluster filesystems, have a look at Clustered_file_system and Shared_disk_file_system.

The ocfs2 modules and ocfs2-tools package are running on OS/2008 r51-3 (2.6.21-omap1) with N800 Hardware! Currently, testing with rw and ro mounts are underway.

The .debs are now online at LIO-Cluster link

Untar ocfs2-2.6.21-omap1.tar to your /media/mmc2 directory, which should create /media/mmc/ocfs2/ for the ocfs2 kernel modules.

The required userspace debs are ocfs2-tools, libcomerr2, and bash3 and are located on LIO-Cluster above.

To provide shared storage to OS2008, have a look at Core-iSCSI/Nokia 800 for iSCSI Initiator builds.

The current prototype is connected to a two (2) node cluster, with the 2nd initiator being a Ubuntu 7.10 i386 VM running 2.6.21 with Open/iSCSI.

The iSCSI Target storage for the prototype is provided by Playstation3/iSCSI running 2.6.25 with LIO-Target.

If any Nokia or Mameo folks are interested in seeing this setup on new/development hardware, or would like to discuss the prototype, please contact nab (AT) linux-iscsi.org for more information.

OCFS2 version info

       Nokia-N800-51-3:/# dmesg | grep OCFS
       [  118.765625] OCFS2 Node Manager 1.3.3
       [  118.875000] OCFS2 DLM 1.3.3
       [  118.929687] OCFS2 DLMFS 1.3.3
       [  118.945312] OCFS2 User DLM kernel interface loaded
       [  119.117187] OCFS2 1.3.3

OCFS2 Status

       Nokia-N800-51-3:/# /etc/init.d/o2cb status
       Module "configfs": Loaded
       Filesystem "configfs": Mounted
       Module "ocfs2_nodemanager": Loaded
       Module "ocfs2_dlm": Loaded
       Module "ocfs2_dlmfs": Loaded
       Filesystem "ocfs2_dlmfs": Mounted
       Checking O2CB cluster ocfs2: Online
       Heartbeat dead threshold = 15
         Network idle timeout: 10000
         Network keepalive delay: 5000
         Network reconnect delay: 2000
       Checking O2CB heartbeat: Active

mounted.ocfs2

       Nokia-N800-51-3:/# mounted.ocfs2 -f 
       Device                FS     Nodes
       /dev/sdb              ocfs2  Nokia-N800-51-3, ubuntu_initiator

mounts

       Nokia-N800-51-3:/# cat /proc/mounts | tail -n 4
       /dev/sda /iqn.2003-01.org.linux-iscsi.playstation3.cell:sn.73b073c4e157/PS3_FILEIO ext3 ro,data=ordered 0 0
       configfs /sys/kernel/config configfs rw 0 0
       ocfs2_dlmfs /dlm ocfs2_dlmfs rw 0 0
       /dev/sdb /iqn.2003-01.org.linux-iscsi.playstation3.cell:sn.73b073c4e157/PS3_OCFS2 ocfs2 ro 0 0

lsmod

       Nokia-N800-51-3:/# lsmod
       Module                  Size  Used by
       ocfs2 359764 1 - Live 0xbf132000
       ocfs2_dlmfs 18792 1 - Live 0xbf12c000
       ocfs2_dlm 178472 2 ocfs2,ocfs2_dlmfs, Live 0xbf0ff000
       ocfs2_nodemanager 125260 7 ocfs2,ocfs2_dlmfs,ocfs2_dlm, Live 0xbf0df000
       configfs 23280 2 ocfs2_nodemanager, Live 0xbf0d8000
       iscsi_initiator_mod 277956 3 - Live 0xbf093000
       ext2 51080 0 - Live 0xbf085000
       ext3 107304 1 - Live 0xbf069000
       mbcache 7108 2 ext2,ext3, Live 0xbf066000
       jbd 51592 2 ocfs2,ext3, Live 0xbf058000
       g_file_storage 27560 0 - Live 0xbf050000
       cx3110x 56200 0 - Live 0xbf041000
       umac 258788 1 cx3110x, Live 0xbf000000 (P)

initiator status

       Nokia-N800-51-3:/# /etc/init.d/initiator status | tail -n 5
       Core-iSCSI Initiator Stack v1.6.2.10 on Linux/armv6l on 2.6.21-omap1
       iSCSI InitiatorName: iqn.2003-01.org.linux-iscsi.Nokia-N800-51-3.armv6l:sn.506dcc5299c
       Linux Nokia-N800-51-3 2.6.21-omap1 #2 Fri Dec 7 11:17:13 EET 2007 armv6l unknown
        13:35:59 up 13:15, load average: 0.42, 0.34, 0.34