Hello,
you will want to read:
https://www.sebastien-han.fr/blog/2014/08/25/ceph-mix-sata-and-ssd-within-the-same-box/
especially section III and IV.
Another approach w/o editing the CRUSH map is here:
https://elkano.org/blog/ceph-sata-ssd-pools-server-editing-crushmap/
I wonder if this task can be further automated using this feature http://lists.ceph.com/pipermail/ceph-users-ceph.com/2013-October/025030.html
Alex
Christian
On Wed, 8 Jun 2016 10:54:36 +0800 秀才 wrote:
> Hi all,
>
> There are SASes & SSDs in my nodes at the same time.
> Now i want divide them into 2 groups, one composed of SASes and one
> only contained SSDs. When i configure CRUSH rulesets, segment below:
>
>
> # buckets
> host robert-a {
> id -2 # do not change unnecessarily
> # weight 1.640
> alg straw
> hash 0 # rjenkins1
> item osd.0 weight 0.250 #SAS
> item osd.1 weight 0.250 #SAS
> item osd.2 weight 0.250 #SSD
> item osd.3 weight 0.250 #SSD
>
> }
>
>
> So, i am not sure must host bucket name be the same with hostname.
>
>
> Or host bucket name does no matter?
>
>
>
> Best regards,
>
> Xiucai
--
Christian Balzer Network/Systems Engineer
chibi@xxxxxxx Global OnLine Japan/Rakuten Communications
http://www.gol.com/
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--
--
Alex Gorbachev
Storcium
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