[Gluster-users] Tiered Volumes and Backups

[Mohammed Rafi K C]

On 08/07/2016 08:41 AM, Lindsay Mathieson wrote:
> On 7/08/2016 12:34 PM, Lindsay Mathieson wrote:
>> One of the things done every week here is a full image backup of all
>> the VM's (take about 20 hours).

Do you use gluster snapshot feature here ? If so, it won't result in
promotion.

>> I was wondering what the implications are for the tier as every shard
>> will be read sequentially. Will I be seeing mass promotions and
>> demotions into the Tier? this would not be desirable. 
>
> I'm guessing cluster.tier-promote-frequency and
> cluster.read-freq-threshold would be the relevant settings to control
> this?

Yes. You can control the behavior using the options. Also we are
planning to give a pause or stop option for migration daemon so that you
can temporarily suspend migration.

Regards
Rafi KC