Thanks all, I'm going to investigate rbd-mirror further.

K.

On 14-05-2020 09:30, Anthony D'Atri wrote:
> It’s entirely possible — and documented — to mirror individual images.  Your 
> proposal to use snapshots is reinventing the wheel, but with less efficiency.
>
> https://docs.ceph.com/docs/nautilus/rbd/rbd-mirroring/#image-configuration
>
>
> ISTR that in Octopus the need for RBD journals is gone, but am not positive.
>
> For done 1-2 volumes at a time you’ll want to increase two tunables to avoid 
> protracted syncing.  Without these I’ve experienced a volume of just a few TB 
> take multiple hours to converge, and some that got increasingly behind over 
> time.
>
>
>   rbd_mirror_journal_max_fetch_bytes:
>     section: "client"
>     value: "33554432"
>
>   rbd_journal_max_payload_bytes:
>     section: "client"
>     value: "8388608"
_______________________________________________
ceph-users mailing list -- ceph-users@ceph.io
To unsubscribe send an email to ceph-users-le...@ceph.io

Reply via email to