Message: 1 Date: Tue, 03 Jan 2006 02:09:30 +0100 From: Juraj Bednar <[EMAIL PROTECTED]> Subject: [Ocfs2-users] iscsi or some other form of shared storage? To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=UTF-8; format=flowed Hello,I would like to ask about using shared storage for ocfs2. I would like to have two linux servers connected using dedicated 1Gbps connection and share the same data. I have no SAN, etc.What is the best approach of building the shared storage? I was considering using iSCSI, having /dev/sda1 as a target and mounted from the other machine. This would probably work, but this way, loosing machine, which is iSCSI target means a single point of failure.
There are some iSCSI HA Solutions from EMC and NetAPP and other vendors .
Doing RAID-1 on local driver and remote iSCSI drive could bring the systems into inconsistent state, right?
Yes
Is it possible to do some kind of data replication, which would not cause problems to OCFS2? Any links to related setups, comments, etc. appreciated.
You can do data replication over the network (RAID-1 over network) . DRBD (www.drbd.org) is the right solution for you . It will work with OCFv2 also . There are some other paid solution from IBM , VERITAS ,LifeKeeper.....,etc ..
Thanks, Juraj ------------------------------ Message: 2 Date: Tue, 03 Jan 2006 13:11:10 +0100 From: Juraj Bednar <[EMAIL PROTECTED]> Subject: [Ocfs2-users] ddraid? To: [email protected] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=UTF-8; format=flowed Hello, has anyone (except of author) tried ocfs2 with http://sourceware.org/cluster/ddraid/?I would really like to build a fully redundant storage without using a SAN (with two PCs). But on the block device level (over network, using raid), there are just so many things, that can go wrong with the implementation, I'm not quite sure what to use.I've seen some reports of using GFS + GNBD + raid1 (fr1), but I believe this will fail on the first split brain occasion.I would really like to have some good distributed filesystem solution, that just works under Linux, in fact, I miss this for years. OCFS2 is a good start (also with GFS), but the requirement of shared storage is quite a problem (consider you want the cluster to span two independent datacenters, ...).Any ideas are helpful.Thanks for the link to PVFS2, but I didn't find out, if it can be redundant yet.Juraj. ------------------------------ _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users End of Ocfs2-users Digest, Vol 25, Issue 1 ******************************************
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