Re: "ceph osd crush set|reweight-subtree" behavior

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The tracker ticket:

https://tracker.ceph.com/issues/48065

On Thu, Oct 29, 2020 at 12:29:52PM +0200, Mykola Golub wrote:
> Hi,
> 
> We noticed that if one set an osd crush weight using the command
> 
>   ceph osd crush set $id $weight host=$host
> 
> it updates the osd weight on $host bucket, but does not update it on
> the "class" bucket (${host}~hdd or ${host}~ssd), and as a result the
> old weight is still used until one runs `ceph osd crush reweight-all`
> or do some other changes that cause the crushmap recalculation.
> 
> The same behaviour is for `ceph osd crush reweight-subtree <name> <weight>`
> command.
> 
> Is it expected behavior or should I report a bug to the tracker?
> 
> I would consider this is ok if I knew a way how to set a weight for a
> "class" (xyz~hdd or ~ssd) bucket. When I try to use ${host}~ssd it
> complains about invalid chars ~ in the bucket name.
> 
> -- 
> Mykola Golub

-- 
Mykola Golub
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