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Bug #23491
closedfs: quota backward compatibility
% Done:
0%
Source:
Development
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
Client, MDS, kceph
Labels (FS):
snapshots
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
Since
commit f93f56eda9d989969af4bc173cd512216e159afc HEAD (upstream/pull/18424/head)
Author: Yan, Zheng <zyan@redhat.com>
Date: Fri Oct 20 17:55:26 2017 +0800
mds: create snaprealm for quota enabled inode
this simplifies client code for find quota enabled inode
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
We now use SnapRealms to manage quotas. Zheng, after thinking about this more I'm not sure if a compatibility flag will make sense for older clients. Should we prevent older clients from writing to directories with quotas if they do not know how to enforce the quota?
We also need to consider a feature flag (require_mimic_mds) for MDS upgrades. What do you think?
Updated by Greg Farnum about 6 years ago
There definitely needs to be something to keep this feature turned off until all the MDSes have upgraded. That may just be a new MDSMap ComaptSet feature?
Updated by Zheng Yan about 6 years ago
old user space client talking to new mds is OK. new client talking to old mds may have problem.
Updated by Zheng Yan about 6 years ago
will there be feature bit for mimic. If there will be, it's easy to add a mds version check to client
Updated by Zheng Yan about 6 years ago
- Subject changed from fs: add flag to mdsmap to indicate to quota handling (using quota realms) to fs: quota backward compatibility
- Status changed from New to Fix Under Review
Updated by Patrick Donnelly about 6 years ago
- Status changed from Fix Under Review to Resolved
- Tags deleted (
snapshots) - Labels (FS) snapshots added
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