[Gluster-devel] Object Quota feature proposal for GlusterFS-3.7

[Luis Pabon]

Quick question, 
  Is this feature still necessary since gluster-swift is now SwiftOnFile and is deployed as a storage policy of Swift which uses the Swift container database?

- Luis

----- Original Message -----
From: "Prashanth Pai" <ppai at redhat.com>
To: "Vijaikumar M" <vmallika at redhat.com>
Cc: "gluster-devel at gluster.org >> Gluster Devel" <gluster-devel at gluster.org>
Sent: Tuesday, February 17, 2015 9:47:20 PM
Subject: Re: [Gluster-devel] Object Quota feature proposal for GlusterFS-3.7

This might be helpful for  better integration with Swift. Swift maintains accounting metadata per account and per container. From glusterfs perspective, accounts are (represented as) first level directories in root and containers are second level directories. So accounts contain containers.

Each account has following metadata:
X-Account-Object-Count
X-Account-Bytes-Used
X-Account-Container-Count

Each container has following metadata:
X-Container-Object-Count
X-Container-Bytes-Used

I've got a few questions:
Will there be separate count stored for files vs directories ?
Does the count represent entire sub tree or just the immediate directory contents ?
Would a getxattr on a dir for count aggregate counts from all distributed bricks ?

Thanks.

Regards,
 -Prashanth Pai

----- Original Message -----
From: "Vijaikumar M" <vmallika at redhat.com>
To: "gluster-devel at gluster.org >> Gluster Devel" <gluster-devel at gluster.org>
Sent: Tuesday, February 17, 2015 5:22:34 PM
Subject: [Gluster-devel] Object Quota feature proposal for GlusterFS-3.7

Hi All, 

We are proposing files/objects quota feature for GlusterFS-3.7. 

Here is the feature page: http://www.gluster.org/community/documentation/index.php/Features/Object_Count 


'Object Quotas' is an enhancement to the existing 'File Usage Quotas' and has the following benefits: 


    * Easy to query number of objects present in a volume. 
    * Can serve as an accounting mechanism for quota enforcement based on number of Inodes. 
    * This interface will be useful for integration with OpenStack Swift and Ceilometer. 

We can set the following Quota object limits, similar to file usage: 


    * 1) Directory level - limit the number of files at the directory level 
    * 2) Volume level - limit the number of files at the volume level 



Looking forward for Question/Feedback. 

Thanks, 
Vijay 


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