Re: Reweight a host

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I don't think so, check this out:

# id    weight  type name       up/down reweight
-6      3.05    root ssd
-7      0.04999         host ceph-01-ssd
11      0.04999                 osd.11  up      1
-8      1               host ceph-02-ssd
12      0.04999                 osd.12  up      1
-9      1               host ceph-03-ssd
13      0.03999                 osd.13  up      1
-10     1               host ceph-04-ssd
14      0.03999                 osd.14  up      1

As you can see, only host ceph-01-ssd has the same weight as its osd,
the other three hosts have weight "1" which is different from their
associated osd.

If the weight of the host -should- be the sum of all osd weights on this
hosts, then my question becomes: how do I make that so for the three
hosts where this is currently not the case?

Thanks,

Erik.


On 20-10-14 03:55, Lei Dong wrote:
> According to my understanding, the weight of a host is the sum of all osd
> weights on this host. So you just reweight any osd on this host, the
> weight of this host is reweighed.
> 
> Thanks
> LeiDong
> 
> On 10/20/14, 7:11 AM, "Erik Logtenberg" <erik@xxxxxxxxxxxxx> wrote:
> 
>> Hi,
>>
>> Simple question: how do I reweight a host in crushmap?
>>
>> I can use "ceph osd crush reweight" to reweight an osd, but I would like
>> to change the weight of a host instead.
>>
>> I tried exporting the crushmap, but I noticed that the weights of all
>> hosts are commented out, like so:
>>
>>        # weight 5.460
>>
>> And they are not the same values as seen in "ceph osd tree".
>>
>> So how do I keep everything as it currently it, but simply change one
>> single weight of one single host?
>>
>> Thanks,
>>
>> Erik.
>> _______________________________________________
>> ceph-users mailing list
>> ceph-users@xxxxxxxxxxxxxx
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

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