Re: What will happen to DAOS if all SCM space is consumed?


Lombardi, Johann
 

Hi there,

 

Applications will get a DER_NOSPACE error. We currently don’t support serialization of metadata to SSDs.

 

Cheers,

Johann

 

From: <daos@daos.groups.io> on behalf of "bob@..." <bob@...>
Reply-To: "daos@daos.groups.io" <daos@daos.groups.io>
Date: Friday 1 April 2022 at 09:12
To: "daos@daos.groups.io" <daos@daos.groups.io>
Subject: [daos] What will happen to DAOS if all SCM space is consumed?

 

Hi all 

What will happen to DAOS when the meta data and small I/Os have consumed all the SCM capacity meanwhile the  SSDs still have enough space  to hold data ?  what is the strategy ? Does it move some 4K values or meta data (keys) to the SSDs and then reclaim their space for incoming data , or just simply stop accepting I/O request? 

                                                                                Regards 

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