> > Hi,all
> > we use openstack + ceph(hammer) in my production
>
> Hammer is soooooo 2015.
>
> > There are 22 osds on a host and 11 osds share one ssd for osd journal.
>
> I can’t imagine a scenario in which this strategy makes sense, the
> documentation and books are quite clear on why this is a bad idea. Assuming
> that your OSDs are HDD and the journal devices are SATA SSD, the journals are
> going to be a bottleneck, and you’re going to wear through them quickly. If
> you have a read-mostly workload, colocating them would be safer.
Oh, i am wrong,we use sas ssd.
> I also suspect that something is amiss with your CRUSH topology that is
> preventing recovery, and/or you actually have multiple overlapping failures.
>
My crushmap is at https://github.com/rongzhen-zhan/myfile/blob/master/crushmap
_______________________________________________
ceph-users mailing list -- [email protected]
To unsubscribe send an email to [email protected]
