Re: [Ocfs2-users] Multiple LUNs and ocfs2
Hi, I would recommend you to check Oracle VM 2.2 as it have the capabilities to use directly multipath block devices, and assign them to guest VMs. This way you could bypass ocfs2. Anyway if you MUST provide 6*100 G to you guest VM, you must either have 6*100 virtual disks as OCFS2 files, or have 6*100 logical volumes in the host environment (which is not recommended because the LVM is not cluster aware yet in OVM), or 6*100G partitions from a single SAN LUN, or 6*100G different SAN luns. After you provide 6*100G block devices to you guest VM, I would use ASM if I want a database on them... HTH, Mihail Daskalov, Technology Manager Software Development, TechnoLogica -Original Message- From: ocfs2-users-boun...@oss.oracle.com [mailto:ocfs2-users-boun...@oss.oracle.com] On Behalf Of Bill Ranck Sent: Tuesday, October 20, 2009 10:33 PM To: ocfs2-users@oss.oracle.com Subject: [Ocfs2-users] Multiple LUNs and ocfs2 Hello folks, I am a newbie with ocfs2 and Oracle VM in general, but I'm slowly figuring things out. I have installed ovm server on 2 blades in an IBM bladecenter, and I have gotten ocfs2 working such that both blades are mounting /OVS from a shared SAN LUN. So far, so good. I will be installing a guest VM on one of the blades with the idea that we can do live migration if/when needed. The database that will be set up there will need to use 6 X 100G LUNs from the SAN. What is the best way to aggregate these LUNs for that purpose? I've got them visible as /dev/dm-2 through /dev/dm-7 on both systems. Do I use LVM at the hypervisor level to combine them into one big disk group and volume, then use mkfs.ocfs2 on that? Or is there a better way? I see, with a quick look through of the archives from this list, that ocfs2 can not aggregate the LUNs itself. I'm just hoping for a pointer in the right direction so I don't shoot myself in the foot by choosing the wrong thing early in the project. -- Bill Ranck Blacksburg, Va. 540-231-3951 ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users smime.p7s Description: S/MIME cryptographic signature ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
[Ocfs2-users] Multiple LUNs and ocfs2
Hello folks, I am a newbie with ocfs2 and Oracle VM in general, but I'm slowly figuring things out. I have installed ovm server on 2 blades in an IBM bladecenter, and I have gotten ocfs2 working such that both blades are mounting /OVS from a shared SAN LUN. So far, so good. I will be installing a guest VM on one of the blades with the idea that we can do live migration if/when needed. The database that will be set up there will need to use 6 X 100G LUNs from the SAN. What is the best way to aggregate these LUNs for that purpose? I've got them visible as /dev/dm-2 through /dev/dm-7 on both systems. Do I use LVM at the hypervisor level to combine them into one big disk group and volume, then use mkfs.ocfs2 on that? Or is there a better way? I see, with a quick look through of the archives from this list, that ocfs2 can not aggregate the LUNs itself. I'm just hoping for a pointer in the right direction so I don't shoot myself in the foot by choosing the wrong thing early in the project. -- Bill Ranck Blacksburg, Va. 540-231-3951 ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
Re: [Ocfs2-users] Multiple LUNs and ocfs2
Currently ocfs2 does not support any lvm. It has to do with having a common cluster stack. That is still a work-in-progress. Bill Ranck wrote: Hello folks, I am a newbie with ocfs2 and Oracle VM in general, but I'm slowly figuring things out. I have installed ovm server on 2 blades in an IBM bladecenter, and I have gotten ocfs2 working such that both blades are mounting /OVS from a shared SAN LUN. So far, so good. I will be installing a guest VM on one of the blades with the idea that we can do live migration if/when needed. The database that will be set up there will need to use 6 X 100G LUNs from the SAN. What is the best way to aggregate these LUNs for that purpose? I've got them visible as /dev/dm-2 through /dev/dm-7 on both systems. Do I use LVM at the hypervisor level to combine them into one big disk group and volume, then use mkfs.ocfs2 on that? Or is there a better way? I see, with a quick look through of the archives from this list, that ocfs2 can not aggregate the LUNs itself. I'm just hoping for a pointer in the right direction so I don't shoot myself in the foot by choosing the wrong thing early in the project. ___ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2-users
