Hmmmm... my original email got eaten by the big bit bucket in the sky... What it said was you need to look at the ceph_features.h file for kernel/userspace to see the differences. This, for those that can access it, is the latest rhel7.3 version (I imagine the CentOS version would be similar, if not identical but you'd have to unpack the source to see and I'm too sleepy). https://access.redhat.com/labs/psb/versions/kernel-3.10.0-514.2.2.el7/include/linux/ceph/ceph_features.h This is the version released with 3.10 upstream AFAICT. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/linux/ceph/ceph_features.h?h=v3.10&id=8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 This is the file for the current jewel head. https://github.com/ceph/ceph/blob/jewel/src/include/ceph_features.h >From that you can see the rhel kernel source looks a lot better than upstream 3.10 but still is lagging in what it supports compared to the jewel head. I agree this is probably not a problem depending on what you want to do with the kernel client. I'd also mention that upstream bug fixes and features continue to get back-ported into the rhel (and subsequently CentOS) kernels. On Sun, Jan 1, 2017 at 8:28 PM, Oliver Dzombic <info@xxxxxxxxxxxxxxxxx> wrote: > Hi, > > on the other side, for example Zheng Yan, but also others, do not get > tired to point out, that 3.10 is too old. > > But i agree, i wonder how 3.10 can be too old ( in general ) and at the > same time being the standard kernel of redhat ( the company behind ceph ). > > Happy new year @ all ! :-) > > -- > Mit freundlichen Gruessen / Best regards > > Oliver Dzombic > IP-Interactive > > mailto:info@xxxxxxxxxxxxxxxxx > > Anschrift: > > IP Interactive UG ( haftungsbeschraenkt ) > Zum Sonnenberg 1-3 > 63571 Gelnhausen > > HRB 93402 beim Amtsgericht Hanau > Geschäftsführung: Oliver Dzombic > > Steuer Nr.: 35 236 3622 1 > UST ID: DE274086107 > > > Am 01.01.2017 um 10:25 schrieb Jun Hu: >> I don't agree with this point. >> >> 3.10 kernel version is enough, becault Redhat ceph enterprise product is >> running on Rhel 7 which is 3.10 kernel version too. >> though redhat 3.10 kernel version is different from upstream kernel >> 3.10 ; If you use Centos or Rhel Linux distribution as a ceph client , >> it is not a problem. >> >> ------------------------------------------------------------------------ >> Margin Hu >> Love open source software >> github: http://www.github.com/ >> >> mail: jhu_com@xxxxxxxxxxx >> *From:* David Turner <mailto:david.turner@xxxxxxxxxxxxxxxx> >> *Date:* 2017-01-01 01:31 >> *To:* Wido den Hollander <mailto:wido@xxxxxxxx> >> *CC:* ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx>; >> Manuel Sopena Ballesteros <mailto:manuel.sb@xxxxxxxxxxxxx> >> *Subject:* Re: linux kernel version for clients >> >> Correct me if I'm wrong, be t the kernel version is only a factor if >> you are using the krbd driver, correct (mapping an rbd with the >> kernel driver). If you were using Ceph-fuse, librbd, etc then the >> version of the kernel on the client wouldn't matter. >> >> Sent from my iPhone >> >> > On Dec 31, 2016, at 3:23 AM, Wido den Hollander <wido@xxxxxxxx> wrote: >> > >> > >> >> Op 31 december 2016 om 6:56 schreef Manuel Sopena Ballesteros >> <manuel.sb@xxxxxxxxxxxxx>: >> >> >> >> >> >> Hi, >> >> >> >> I have several questions regarding kernel running on client machines: >> >> >> >> >> >> * Why is kernel 3.10 considered an old kernel to run ceph >> clients? >> >> >> > >> > Development in the Ceph world goes fast and 3.10 is a old kernel >> in that case. If you check the release notes for the Linux kernel >> you will see that there are a lot of changes. >> > >> >> * Which features are missing? >> >> >> > >> > A lot, probably to much to sum up here. >> > >> >> * What would be the impact of running clients on >> centos7.3 (kernel 3.10) compared to using a higher/recommended version? >> >> >> > >> > Not able to access data, crashes on the client, performance >> issues. All kinds of things. >> > >> > Just don't use the 3.10 kernel, try using a more recent kernel. >> > >> > Wido >> > >> >> Thank you very much >> >> >> >> Manuel >> >> >> >> NOTICE >> >> Please consider the environment before printing this email. This >> message and any attachments are intended for the addressee named and >> may contain legally privileged/confidential/copyright information. >> If you are not the intended recipient, you should not read, use, >> disclose, copy or distribute this communication. If you have >> received this message in error please notify us at once by return >> email and then delete both messages. We accept no liability for the >> distribution of viruses or similar in electronic communications. >> This notice should not be removed. >> >> >> >> ------------------------------------------------------------------------ >> >> <https://storagecraft.com> David Turner | Cloud Operations >> Engineer | StorageCraft Technology Corporation >> <https://storagecraft.com> >> 380 Data Drive Suite 300 | Draper | Utah | 84020 >> Office: 801.871.2760 | Mobile: 385.224.2943 >> >> ------------------------------------------------------------------------ >> >> If you are not the intended recipient of this message or received it >> erroneously, please notify the sender and delete it, together with >> any attachments, and be advised that any dissemination or copying of >> this message is prohibited. >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> >> ceph-users mailing list >> >> ceph-users@xxxxxxxxxxxxxx >> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > _______________________________________________ >> > ceph-users mailing list >> > ceph-users@xxxxxxxxxxxxxx >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Cheers, Brad _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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