Re: ceph rdb + libvirt

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> but I also can mount the disk directly with
>
>   /etc/ceph/rbdmap
>
> at the boot the disk will appear somewhere in /dev/sd* on the kvm server
> and then use it in kvm as a «normal» disk.
> Don't know if they are any difference or just a preference.

If you mount with KRBD and the ceph cluster acts up, the KVM host
might stop serving IO, which would affect lots more than if KVM uses
librbd to mount it for the guest only, in the second case, the host
and possibly other guests might run on undisturbed.


-- 
May the most significant bit of your life be positive.
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