But interestingly enough, if you look down to where they run the targetcli ls, it shows a RBD backing store.
Maybe it's using the krbd driver to actually do the Ceph side of the communication, but lio plugs into this rather than just talking to a dumb block device??? This needs further investigation. Could be very interesting. > -----Original Message----- > From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of > ??????? ??????? > Sent: 18 January 2016 17:15 > To: Tyler Bishop <tyler.bis...@beyondhosting.net> > Cc: Dominik Zalewski <dzalew...@optlink.co.uk>; ceph-users <ceph- > us...@lists.ceph.com> > Subject: Re: [ceph-users] CentOS 7 iscsi gateway using lrbd > > https://github.com/swiftgist/lrbd/wiki > According to lrbd wiki it still uses KRBD (see those /dev/rbd/... > devices in targetcli config). > I was thinking that Mike Christie developed a librbd module for LIO. > So what is it - KRBD or librbd? > > 2016-01-18 20:23 GMT+08:00 Tyler Bishop > <tyler.bis...@beyondhosting.net>: > > > > Well that's interesting. > > > > I've mounted block devices to the kernel and exported them to iscsi > > but the performance was horrible.. I wonder if this is any different? > > > > > > ________________________________ > > From: "Dominik Zalewski" <dzalew...@optlink.co.uk> > > To: ceph-users@lists.ceph.com > > Sent: Monday, January 18, 2016 6:35:20 AM > > Subject: [ceph-users] CentOS 7 iscsi gateway using lrbd > > > > Hi, > > I'm looking into implementing iscsi gateway with MPIO using lrbd - > > https://github.com/swiftgist/lrb > > > > > > > https://www.suse.com/docrep/documents/kgu61iyowz/suse_enterprise_st > ora > > ge_2_and_iscsi.pdf > > > > https://www.susecon.com/doc/2015/sessions/TUT16512.pdf > > > > From above examples: > > > > For iSCSI failover and load-balancing, > > > > these servers must run a kernel supporting the target_core_ > > > > rbd module. This also requires that the target servers run at > > > > least the version 3.12.48-52.27.1 of the kernel-default package. > > > > Updates packages are available from the SUSE Linux > > > > Enterprise Server maintenance channel. > > > > > > I understand that lrbd is basically a nice way to configure LIO and > > rbd across ceph osd nodes/iscsi gatways. Does CentOS 7 have same > > target_core_rbd module in the kernel or this is something Suse > > Enterprise Storage specific only? > > > > > > Basically will LIO+rbd work the same way on CentOS 7? Has anyone using > > it with CentOS? > > > > > > Thanks > > > > > > Dominik > > > > > > > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
