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
Define permanent export rbd with iscsi in /etc/tgt/targets.conf:
<target iqn.2014-04.rbdstore.example.com:volume512>
driver iscsi
bs-type rbd
backing-store iscsi/volume512
initiator-address 10.166.18.87
</target
service tgt reload
Or use commands:
tgtadm --lld iscsi --mode logicalunit --op new --tid 1 --lun 1 --backing-store
iscsi/volume512 --bstype rbd
tgtadm -C 0 --lld iscsi --op bind --mode target --tid 1 -I 10.166.18.87
tgt-admin -s
show current iscsi settings and sessions.
You can install tgtd on multiple osd/monitor hosts and connect iscsi initiator
to this servers with multipath enabled. Iscsi proxy servers not needed with
tgtd.
On Thu, May 8, 2014 at 12:20 AM, Sergey Malinin<h...@newmail.com>, wrote:
http://www.hastexo.com/resources/hints-and-kinks/turning-ceph-rbd-images-san-storage-devices
On Wednesday, May 7, 2014 at 15:06, Andrei Mikhailovsky wrote:
Vlad, is there a howto somewhere describing the steps on how to setup iscsi
multipathing over ceph? It looks like a good alternative to nfs
Thanks
From: "Vlad Gorbunov" <vadi...@gmail.com>
To: "Andrei Mikhailovsky" <and...@arhont.com>
Cc: ceph-users@lists.ceph.com
Sent: Wednesday, 7 May, 2014 12:02:09 PM
Subject: Re: [ceph-users] NFS over CEPH - best practice
For XenServer or VMware is better to use iscsi client to tgtd with ceph
support. You can install tgtd on osd or monitor server and use multipath for
failover.
On Wed, May 7, 2014 at 9:47 PM, Andrei Mikhailovsky <and...@arhont.com> wrote:
Hello guys,
I would like to offer NFS service to the XenServer and VMWare hypervisors for
storing vm images. I am currently running ceph rbd with kvm, which is working
reasonably well.
What would be the best way of running NFS services over CEPH, so that the
XenServer and VMWare's vm disk images are stored in ceph storage over NFS?
Many thanks
Andrei
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