[ceph-users] RBD deprecated?
All, I have been using Ceph to provide block devices for various, nefarious purposes (mostly testing ;-). But as I have worked with various Linux distributions (RHEL7, CentOS6, CentOS7) and various Ceph releases (firefly, giant), I notice that the onlycombination for which I seem able to find the needed kernel modules (rbd, libceph) is RHEL7-firefly. I've gone a far ways with that one combination, but I am hitting some limits now, in terms of flexibility of configurations. This suggests to me that either I don't know where/how I am supposed to get the needed kernel modules or (more likely, given that I found the RHEL7-firefly combination) that the block device presentation is deprecated (or at least disfavored). Can anyone comment on whether it's a good idea to plan around it, going forward? Regards, -don-___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] RBD deprecated?
Hi all It's quite difficult to introduce ICE block mode in major enterprise because major companies still have RHEL 6 and 5 so no good kernel version. RHEL 7 is not yet fully qualified in enterprise (real life) and after that we have thousand of servers to migrate... No way to have RPM like solution to use RBD block on RHEL 6/5 ? Sent from my iPhone On 5 févr. 2015, at 19:17, Don Doerner dondoer...@sbcglobal.net wrote: Ken, Thanks for the reply. It's really good news, that RBD is considered strategic. I'm guessing I can use the firefly kernel modules on a giant ceph system, as long as RHEL7 is in play? No serious changes in that code from firefly to giant (I'm hoping)? Regards, -don- On Thursday, February 5, 2015 10:05 AM, Ken Dreyer kdre...@redhat.com wrote: On 02/05/2015 08:55 AM, Don Doerner wrote: I have been using Ceph to provide block devices for various, nefarious purposes (mostly testing ;-). But as I have worked with various Linux distributions (RHEL7, CentOS6, CentOS7) and various Ceph releases (firefly, giant), I notice that the onlycombination for which I seem able to find the needed kernel modules (rbd, libceph) is RHEL7-firefly. Hi Don, The RBD kernel module is not deprecated; quite the opposite in fact. A year ago things were a bit rough regarding supporting the Ceph kernel modules on RHEL 6 and 7. All Ceph kernel module development goes upstream first into Linus' kernel tree, and that tree is very different than what ships in RHEL 6 (2.6.32 plus a lot of patches) and RHEL 7 (3.10.0 plus a lot of patches). This meant that it was historically much harder for the Ceph developer community to integrate what was going on upstream with what was happening in the downstream RHEL kernels. Currently, Red Hat's plan is to ship rbd.ko and some of the associated firefly userland bits in RHEL 7.1. You mention that you've been testing on RHEL 7, so I'm guessing you're got a RHEL subscription. As it turns out, you can try the new kernel package out today in the RHEL 7.1 Beta that's available to all RHEL subscribers. It's a beta, so please open support requests with Red Hat if you happen to hit bugs with those new packages. Unfortunately CentOS does not rebuild and publish the public RHEL Betas, so for CentOS 7, you'll have to wait until RHEL 7.1 reaches GA and CentOS 7.1 rebuilds it. (I suppose you could jump ahead of the CentOS developers here and rebuild your own kernel package and ceph userland if you're really eager... but you're really on your own there :) - Ken ___ 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
Re: [ceph-users] RBD deprecated?
On 02/05/2015 08:55 AM, Don Doerner wrote: I have been using Ceph to provide block devices for various, nefarious purposes (mostly testing ;-). But as I have worked with various Linux distributions (RHEL7, CentOS6, CentOS7) and various Ceph releases (firefly, giant), I notice that the onlycombination for which I seem able to find the needed kernel modules (rbd, libceph) is RHEL7-firefly. Hi Don, The RBD kernel module is not deprecated; quite the opposite in fact. A year ago things were a bit rough regarding supporting the Ceph kernel modules on RHEL 6 and 7. All Ceph kernel module development goes upstream first into Linus' kernel tree, and that tree is very different than what ships in RHEL 6 (2.6.32 plus a lot of patches) and RHEL 7 (3.10.0 plus a lot of patches). This meant that it was historically much harder for the Ceph developer community to integrate what was going on upstream with what was happening in the downstream RHEL kernels. Currently, Red Hat's plan is to ship rbd.ko and some of the associated firefly userland bits in RHEL 7.1. You mention that you've been testing on RHEL 7, so I'm guessing you're got a RHEL subscription. As it turns out, you can try the new kernel package out today in the RHEL 7.1 Beta that's available to all RHEL subscribers. It's a beta, so please open support requests with Red Hat if you happen to hit bugs with those new packages. Unfortunately CentOS does not rebuild and publish the public RHEL Betas, so for CentOS 7, you'll have to wait until RHEL 7.1 reaches GA and CentOS 7.1 rebuilds it. (I suppose you could jump ahead of the CentOS developers here and rebuild your own kernel package and ceph userland if you're really eager... but you're really on your own there :) - Ken ___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
Re: [ceph-users] RBD deprecated?
Ken, Thanks for the reply. It's really good news, that RBD is considered strategic. I'm guessing I can use the firefly kernel modules on a giant ceph system, as long as RHEL7 is in play? No serious changes in that code from firefly to giant (I'm hoping)? Regards, -don- On Thursday, February 5, 2015 10:05 AM, Ken Dreyer kdre...@redhat.com wrote: On 02/05/2015 08:55 AM, Don Doerner wrote: I have been using Ceph to provide block devices for various, nefarious purposes (mostly testing ;-). But as I have worked with various Linux distributions (RHEL7, CentOS6, CentOS7) and various Ceph releases (firefly, giant), I notice that the onlycombination for which I seem able to find the needed kernel modules (rbd, libceph) is RHEL7-firefly. Hi Don, The RBD kernel module is not deprecated; quite the opposite in fact. A year ago things were a bit rough regarding supporting the Ceph kernel modules on RHEL 6 and 7. All Ceph kernel module development goes upstream first into Linus' kernel tree, and that tree is very different than what ships in RHEL 6 (2.6.32 plus a lot of patches) and RHEL 7 (3.10.0 plus a lot of patches). This meant that it was historically much harder for the Ceph developer community to integrate what was going on upstream with what was happening in the downstream RHEL kernels. Currently, Red Hat's plan is to ship rbd.ko and some of the associated firefly userland bits in RHEL 7.1. You mention that you've been testing on RHEL 7, so I'm guessing you're got a RHEL subscription. As it turns out, you can try the new kernel package out today in the RHEL 7.1 Beta that's available to all RHEL subscribers. It's a beta, so please open support requests with Red Hat if you happen to hit bugs with those new packages. Unfortunately CentOS does not rebuild and publish the public RHEL Betas, so for CentOS 7, you'll have to wait until RHEL 7.1 reaches GA and CentOS 7.1 rebuilds it. (I suppose you could jump ahead of the CentOS developers here and rebuild your own kernel package and ceph userland if you're really eager... but you're really on your own there :) - Ken___ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
