[
https://issues.apache.org/jira/browse/HDDS-7744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Siyao Meng updated HDDS-7744:
-----------------------------
Summary: [Snapshot] Implement new quota including space exclusively used in
snapshots (was: [Snapshot] Implement new quota including keys exclusively used
in snapshots)
> [Snapshot] Implement new quota including space exclusively used in snapshots
> ----------------------------------------------------------------------------
>
> Key: HDDS-7744
> URL: https://issues.apache.org/jira/browse/HDDS-7744
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Siyao Meng
> Priority: Major
>
> (Excerpt from the design doc)
> g) Quota considerations:
> 1. Currently, quota usage is [immediately
> decreased|https://github.com/apache/ozone/blob/ddbe71d3f90ae14ecf29f51c2265f1f9c3171668/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/key/OMKeyDeleteRequest.java#L166-L168]
> when a key is successfully confirmed deleted in OM, rather than when its key
> blocks are reclaimed. As a result, if we do not change the logic in
> validateAndUpdateCache in OMKeyDeleteRequest (and the FSO equivalent) to make
> it aware of snapshots, effectively those key space exclusively used in
> snapshots won’t count against the quota, because their quota usage is
> “released” the minute the keys are deleted from the active FS.
> 2. On one hand, it sounds reasonable to leave the current quota handling
> logic in the active file system as-is, because in a case where a regular user
> Bob has exhausted its bucket quota and at this point an admin Alice takes a
> snapshot on the bucket, Bob would have no way to release his bucket quota
> usage if snapshot usage also counts against the current Ozone quota
> implementation. Only admins are able to delete and create snapshots.
> 3. If needed, we could introduce another kind of quota which includes
> snapshot usage in the future, [similar to what ZFS
> has|https://docs.oracle.com/cd/E53394_01/html/E54801/gazvb.html]. ZFS has
> refquota which doesn't count snapshot usage (like what we currently have in
> Ozone), and quota which counts snapshot usage (and others) as well.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
