Hi Jiajia zhong, I'm using mixed SSD and HDD on the same node and I did it from url https://www.sebastien-han.fr/blog/2014/08/25/ceph-mix-sata-and-ssd-within-the-same-box/, I don't get any problems when run SSD and HDD on the same node. Now I want to increase Ceph thoughput by increase network into 20Gbps (I want single network stream get max 20Gbps - test by iperf ). Could you please share your experience about HA network for Ceph ? What type of bonding do you have? are you using stackable switches?
I very appreciate your help. On Mon, Mar 6, 2017 at 11:45 AM, jiajia zhong <zhong2p...@gmail.com> wrote: > we are using mixed too, intel PCIE 400G SSD * 8 for metadata pool and tier > caching pool for our cephfs. > > *plus:* > *'osd crush update on start = false*' as Vladimir replied. > > 2017-03-03 20:33 GMT+08:00 Дробышевский, Владимир <v...@itgorod.ru>: > >> Hi, Matteo! >> >> Yes, I'm using mixed cluster in production but it's pretty small at the >> moment. I've made a smal step by step manual for myself when I did this for >> the first time and now put it as a gist: https://gist.github.com/vheath >> en/cf2203aeb53e33e3f80c8c64a02263bc#file-manual-txt. Probably it could >> be a little bit outdated since it was some time ago. >> >> Crush map modifications are going to be persistent in case of reboots >> and maintenance if you put *'osd crush update on start = false*' to the >> [osd] section of ceph conf. >> >> But I would also recommend to start from this article: >> https://www.sebastien-han.fr/blog/2014/08/25/ceph- >> mix-sata-and-ssd-within-the-same-box/ >> >> P.S. While I was writing this letter I've seen a letter from Maxime >> Guyot. Seems that his method is much easier if it leads to the same results. >> >> Best regards, >> Vladimir >> >> С уважением, >> Дробышевский Владимир >> Компания "АйТи Город" >> +7 343 2222192 <+7%20343%20222-21-92> >> >> Аппаратное и программное обеспечение >> IBM, Microsoft, Eset >> Поставка проектов "под ключ" >> Аутсорсинг ИТ-услуг >> >> 2017-03-03 16:30 GMT+05:00 Matteo Dacrema <mdacr...@enter.eu>: >> >>> Hi all, >>> >>> Does anyone run a production cluster with a modified crush map for >>> create two pools belonging one to HDDs and one to SSDs. >>> What’s the best method? Modify the crush map via ceph CLI or via text >>> editor? >>> Will the modification to the crush map be persistent across reboots and >>> maintenance operations? >>> There’s something to consider when doing upgrades or other operations or >>> different by having “original” crush map? >>> >>> Thank you >>> Matteo >>> -------------------------------------------- >>> This email and any files transmitted with it are confidential and >>> intended solely for the use of the individual or entity to whom they are >>> addressed. If you have received this email in error please notify the >>> system manager. This message contains confidential information and is >>> intended only for the individual named. If you are not the named addressee >>> you should not disseminate, distribute or copy this e-mail. Please notify >>> the sender immediately by e-mail if you have received this e-mail by >>> mistake and delete this e-mail from your system. If you are not the >>> intended recipient you are notified that disclosing, copying, distributing >>> or taking any action in reliance on the contents of this information is >>> strictly prohibited. >>> >>> >>> _______________________________________________ >>> 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 > >
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