Bug 2227992

Summary: mds: cap revoke and cap update's seqs mismatched
Product: [Red Hat Storage] Red Hat Ceph Storage Reporter: Xiubo Li <xiubli>
Component: CephFSAssignee: Xiubo Li <xiubli>
Status: CLOSED ERRATA QA Contact: Hemanth Kumar <hyelloji>
Severity: high Docs Contact: Rivka Pollack <rpollack>
Priority: unspecified    
Version: 5.3CC: akraj, ceph-eng-bugs, cephqe-warriors, ngangadh, tserlin, vshankar
Target Milestone: ---   
Target Release: 7.0   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: ceph-18.2.0-31.el9cp Doc Type: Bug Fix
Doc Text:
.Revocation requests no longer get stuck Previously, before the revoke request was sent out, which would increase the 'seq', if the clients released the corresponding caps and sent out the cap update request with the old `seq`, the MDS would miss checking the `seq`(s) and cap calculation. Due to this, the revocation requests would be stuck infinitely and would throw warnings about the revocation requests not responding from clients. With this fix, an acknowledgement is always sent for revocation requests and they no longer get stuck.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2023-12-13 15:21:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2237662    

Description Xiubo Li 2023-08-01 05:51:25 UTC 
This bug was initially created as a copy of Bug #2224242

I am copying this bug because: 



If just before the revoke request, which will increase the 'seq', is
sent out the clients released the corresponding caps and sent out
the cap update request with old 'seq', the mds will miss checking
the seqs and calculating the caps.

We should always send an ack for revoke requests.

Fixes: https://tracker.ceph.com/issues/61782
Comment 1 RHEL Program Management 2023-08-01 05:51:34 UTC 
Please specify the severity of this bug. Severity is defined here:
https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_severity.
Comment 8 errata-xmlrpc 2023-12-13 15:21:13 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Red Hat Ceph Storage 7.0 Bug Fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:7780