You can fail-over using iSCSI multi-pathing. Have the initiator log in to both targets and then setup dm-multipath to do fail-over. On the target side you could use drbd with multi primaries and there you have it, redundant storage with easy fail-over.
-Ross -----Original Message----- From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> To: CentOS mailing list <centos@centos.org> Sent: Wed Jan 02 20:15:58 2008 Subject: Re: [CentOS] Xen, GFS, GNBD and DRBD? On 03/01/2008, at 9:55 AM, Ross S. W. Walker wrote: > > Take a look at iSCSI for the storage servers. iSCSI Enterprise > Target is what I use here and it works well for us. > > You don't really need shared filesystems if you are doing direct > block io to LVs or raw partitions as the Xen migration will handle > the hand-off, but you will if you are using flat files, because of > this I recommend using LVs or raw partitions as clustered > filesystems will put a serious overhead on the Xen guest io. > > -Ross Ross, I can use DRBD to mirror data between the two storage servers and iSCSI to export the block devices, but how will iSCSI cope with failure of one storage server? Can I use heartbeat and CRM to failover the host IP and iSCSI target to the other storage server? Regards, Tom _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.
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