[PATCH v2 2/2] box: set readahead before replicaset sync

[Vladimir Davydov]

On Thu, Feb 21, 2019 at 09:02:36PM +0300, Serge Petrenko wrote:
> Previously readahead was set after the instance synced with all existing
> masters. This could lead to a case when some client connections created
> rather early would start with default readahead value even when
> it was explicitly set to some value.
> So, start setting readahead before replicaset sync.
> 
> Follow-up: #3958

Pushed to 2.1 and 1.10.