Ideally I would like to have a setup with 2+ iscsi servers, so that I can perform maintenance if necessary without shutting down the vms running on the servers. I guess multipathing is what I need. Also I will need to have more than one xenserver/vmware host servers, so the iscsi LUNs will be mounted on several servers. Would the suggested setup not work for my requirements? Andrei ----- Original Message ----- From: "Leen Besselink" <leen@xxxxxxxxxxxxxxxxx> To: ceph-users at lists.ceph.com Sent: Thursday, 8 May, 2014 9:35:21 PM Subject: Re: NFS over CEPH - best practice On Thu, May 08, 2014 at 01:24:17AM +0200, Gilles Mocellin wrote: > Le 07/05/2014 15:23, Vlad Gorbunov a ?crit : > >It's easy to install tgtd with ceph support. ubuntu 12.04 for example: > > > >Connect ceph-extras repo: > >echo deb http://ceph.com/packages/ceph-extras/debian $(lsb_release > >-sc) main | sudo tee /etc/apt/sources.list.d/ceph-extras.list > > > >Install tgtd with rbd support: > >apt-get update > >apt-get install tgt > > > >It's important to disable the rbd cache on tgtd host. Set in > >/etc/ceph/ceph.conf: > >[client] > >rbd_cache = false > [...] > > Hello, > Hi, > Without cache on the tgtd side, it should be possible to have > failover and load balancing (active/avtive) multipathing. > Have you tested multipath load balancing in this scenario ? > > If it's reliable, it opens a new way for me to do HA storage with iSCSI ! > I have a question, what is your use case ? Do you need SCSI-3 persistent reservations so multiple machines can use the same LUN at the same time ? Because in that case I think tgtd won't help you. Have a good day, Leen. _______________________________________________ ceph-users mailing list ceph-users at lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140509/8dc589d5/attachment.htm>
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