We write many millions of keys into RGW which will never be changed (until they are deleted) -- it would be interesting if we could somehow indicate this to RGW and enable reading those from the replicas as well.
-Ben
On Mon, May 8, 2017 at 10:18 AM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
librbd can optionally read from replicas for snapshots and parent
images (i.e. known read-only data). This is controlled via the
following configuration options:
rbd_balance_snap_reads
rbd_localize_snap_reads
rbd_balance_parent_reads
rbd_localize_parent_reads
Direct users of the librados API can also utilize the
LIBRADOS_OPERATION_BALANCE_READS and LIBRADOS_OPERATION_LOCALIZE_ READS
flags to control this behavior.
> ______________________________
On Mon, May 8, 2017 at 12:04 PM, Mehmet <ceph@xxxxxxxxxx> wrote:
> Hi,
>
> I thought that Clients do also reads from ceph replicas. Sometimes i Read in
> the web that this does only happens from the primary pg like how ceph handle
> writes... so what is True?
>
> Greetz
> Mehmet
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Jason
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