Re: [Ocfs2-users] Fwd: OCFS drives not syncing
On 10/05/2011 08:46 AM, Bradlee Landis wrote: > Sorry Sunil, my email replied to you instead of the list. > > On Wed, Oct 5, 2011 at 10:09 AM, Sunil Mushran > wrote: >> ocfs2 is a shared disk cluster file system. It requires a shared disk. >> >> However, if you are only going to use 2 nodes, you could use drbd, >> a replicating block device. To ocfs2, it appears as a shared disk. >> Google drbd and ocfs2 for more. >> > So I've been confused about this the whole time I guess. So how is the > OCFS drive shared? Is it done through OCFS, or does it require NFS? > > How do I access the filesystem from the other node? The drives need to be physically shared. As in, all nodes need to be able to concurrently read and write directly to the disk. Two popular solutions are fiber channel and iscsi. A fiber channel solution could be EMC disk array + FC switch + hbas on all nodes hooked up to the switch. An iscsi solution could be a iscsi target running on one server with the disks. The nodes would use an iscsi initiator to access the target. The devices will show up as regular devices (/dev/sdX) on all nodes. The cheapest solution would be to use drbd. ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
[Ocfs2-users] Fwd: OCFS drives not syncing
Sorry Sunil, my email replied to you instead of the list. On Wed, Oct 5, 2011 at 10:09 AM, Sunil Mushran wrote: > ocfs2 is a shared disk cluster file system. It requires a shared disk. > > However, if you are only going to use 2 nodes, you could use drbd, > a replicating block device. To ocfs2, it appears as a shared disk. > Google drbd and ocfs2 for more. > So I've been confused about this the whole time I guess. So how is the OCFS drive shared? Is it done through OCFS, or does it require NFS? How do I access the filesystem from the other node? -- Thanks, Brad Landis -- Thanks, Brad Landis ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
Re: [Ocfs2-users] OCFS drives not syncing
ocfs2 is a shared disk cluster file system. It requires a shared disk. However, if you are only going to use 2 nodes, you could use drbd, a replicating block device. To ocfs2, it appears as a shared disk. Google drbd and ocfs2 for more. On 10/05/2011 07:15 AM, Bradlee Landis wrote: > I have asked a question at > http://serverfault.com/questions/318526/ocfs-configuration , but I > thought this might be a better place to ask. > > I installed Oracle Linux 3.0 on my machine, and I created two ocfs2 > partitions, /cluster1 and /cluster2. I just created it with default > options, so maybe that's where I went wrong. I configured > /etc/ocfs2/cluster.conf and generated /etc/sysconfig/o2cb. It looks to > be fine, but it's not actually syncing the filesystems. > > What am I doing wrong? Do I need to specify certain flags in /etc/fstab? > > I put a filesystem name "vmcluster" on sda3 to see if it might help. > Also, on one server, it's using sda3 and sdb3, and the other is sda2 > and sdb2. They also may be different sizes, so if that would be > causing my problem, let me know. > > Here is my configuration below. > > == /etc/mtab == > /dev/sda3 /cluster1 ocfs2 rw,_netdev,heartbeat=local 0 0 > /dev/sdb3 /cluster2 ocfs2 rw,heartbeat=none 0 0 > > == /etc/ocfs2/cluster.conf == > > cluster: > node_count = 2 > name = vmcluster > > node: > ip_port = > ip_address = 198.18.0.25 > number = 0 > name = vm1 > cluster = vmcluster > > node: > ip_port = > ip_address = 198.18.0.26 > number = 1 > name = vm2 > cluster = vmcluster > > == /etc/sysconfig/o2cb (Generated) == > > O2CB_ENABLED=true > O2CB_STACK=o2cb > O2CB_BOOTCLUSTER=vmcluster > O2CB_HEARTBEAT_THRESHOLD= > O2CB_IDLE_TIMEOUT_MS= > O2CB_KEEPALIVE_DELAY_MS= > O2CB_RECONNECT_DELAY_MS= > > > > ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
[Ocfs2-users] OCFS drives not syncing
I have asked a question at http://serverfault.com/questions/318526/ocfs-configuration , but I thought this might be a better place to ask. I installed Oracle Linux 3.0 on my machine, and I created two ocfs2 partitions, /cluster1 and /cluster2. I just created it with default options, so maybe that's where I went wrong. I configured /etc/ocfs2/cluster.conf and generated /etc/sysconfig/o2cb. It looks to be fine, but it's not actually syncing the filesystems. What am I doing wrong? Do I need to specify certain flags in /etc/fstab? I put a filesystem name "vmcluster" on sda3 to see if it might help. Also, on one server, it's using sda3 and sdb3, and the other is sda2 and sdb2. They also may be different sizes, so if that would be causing my problem, let me know. Here is my configuration below. == /etc/mtab == /dev/sda3 /cluster1 ocfs2 rw,_netdev,heartbeat=local 0 0 /dev/sdb3 /cluster2 ocfs2 rw,heartbeat=none 0 0 == /etc/ocfs2/cluster.conf == cluster: node_count = 2 name = vmcluster node: ip_port = ip_address = 198.18.0.25 number = 0 name = vm1 cluster = vmcluster node: ip_port = ip_address = 198.18.0.26 number = 1 name = vm2 cluster = vmcluster == /etc/sysconfig/o2cb (Generated) == O2CB_ENABLED=true O2CB_STACK=o2cb O2CB_BOOTCLUSTER=vmcluster O2CB_HEARTBEAT_THRESHOLD= O2CB_IDLE_TIMEOUT_MS= O2CB_KEEPALIVE_DELAY_MS= O2CB_RECONNECT_DELAY_MS= -- Thanks, Brad Landis ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
