Re: Balancer: change from crush-compat to upmap

[Caspar Smit <casparsmit@xxxxxxxxxxx>]

Hi Xavier,

Not yet, i got a little anxious in changing anything major in the cluster after reading about the 12.2.5 regressions since i'm also using bluestore and erasure coding.

So after this cluster is upgraded to 12.2.7 i'm proceeding forward with this. 

Kind regards,

Caspar

2018-07-16 8:34 GMT+02:00 Xavier Trilla <xavier.trilla@xxxxxxxxxxx>:

Hi Caspar,

 

Did you find any information regarding the migration from crush-compat to unmap? I’m facing the same situation.

 

Thanks!

 

 

De: ceph-users <ceph-users-bounces@lists.ceph.com> En nombre de Caspar Smit
Enviado el: lunes, 25 de junio de 2018 12:25
Para: ceph-users <ceph-users@xxxxxxxxxxxxxx>
Asunto: Balancer: change from crush-compat to upmap

 

Hi All,

 

I've been using the balancer module in crush-compat mode for quite a while now and want to switch to upmap mode since all my clients are now luminous (v12.2.5)

 

i've reweighted the compat weight-set back to as close as the original crush weights using 'ceph osd crush reweight-compat'

 

Before i switch to upmap i presume i need to remove the compat weight set with:

 

ceph osd crush weight-set rm-compat

 

Will this have any significant impact (rebalancing lots of pgs) or does this have very little effect since i already reweighted everything back close to crush default weights?

 

Thanks in advance and kind regards,

Caspar

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