Re: Reweight a host

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I¹ve never see this before. The weight of host is commented out because
it¹s weight is the sum of weight in the following lines started from
³item². Can you attach your crush map? Did you manually change it?

On 10/20/14, 6:06 PM, "Erik Logtenberg" <erik@xxxxxxxxxxxxx> wrote:

>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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