Juraj Bednar
2006-Jan-03 01:09 UTC
[Ocfs2-users] iscsi or some other form of shared storage?
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.
Doing RAID-1 on local driver and remote iSCSI drive could bring the
systems into inconsistent state, right?
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.
Thanks,
Juraj
------------------------------> > Message: 4 > Date: Wed, 04 Jan 2006 18:15:28 +0100 > From: Juraj Bednar <jooray at gmail.com> > Subject: Re: [Ocfs2-users] Ocfs2-users Digest, Vol 25, Issue 1 > To: shashi <shashi.boddula at oracle.com>, ocfs2-users at oss.oracle.com > Message-ID: <43BC02B0.3030206 at gmail.com> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Hello, > > >>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 . > > > well, are you sure? According to this FAQ entry: > http://wiki.linux-ha.org/DRBD/FAQ#head-a39a43203ed93af71065d2a7b36b0db089207cbd > > According to this, DRBD does not allow concurrent writes from different > nodes.Yes . At present , DRBD doesn't allow concurrent writes . But , it is in agenda of DRBD devolopers .> > Or you mean something like doing DRBD for backing the data up and > iSCSI/GNBD/NBD/ENBD for actually sharing the DRBD device?You can use DRBD for Mirroring , backup and replication .> > RAID-1 over network is a good idea, but I need some, that is > cluster-aware (because of write ordering) and allows writes from all > nodes...There is a good support for DRBD from Linux-HA . You can combine Linux-HA with DRBD to build a true cluster.> > Or am I completely wrong here? > > > Juraj. >-------------- next part -------------- A non-text attachment was scrubbed... Name: 0xEEF4DD5D.asc Type: application/pgp-keys Size: 892 bytes Desc: not available Url : http://oss.oracle.com/pipermail/ocfs2-users/attachments/20060107/b7df90ff/0xEEF4DD5D.bin -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: OpenPGP digital signature Url : http://oss.oracle.com/pipermail/ocfs2-users/attachments/20060107/b7df90ff/signature.bin