Hi, Matteo!
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.
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/vheathen/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 Probably it could be a little bit outdated since it was some time ago.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.
С уважением,
Дробышевский Владимир
Компания "АйТи Город"
+7 343 2222192
Аппаратное и программное обеспечение
IBM, Microsoft, Eset
Поставка проектов "под ключ"
Аутсорсинг ИТ-услуг
Best regards,
Vladimir
С уважением,
Дробышевский Владимир
Компания "АйТи Город"
+7 343 2222192
Аппаратное и программное обеспечение
IBM, Microsoft, Eset
Поставка проектов "под ключ"
Аутсорсинг ИТ-услуг
2017-03-03 16:30 GMT+05:00 Matteo Dacrema <mdacrema@xxxxxxxx>:
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 youMatteo-------------------------------------------- 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@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
