Bug 2168541

Summary: mon: prevent allocating snapids allocated for CephFS
Product: [Red Hat Storage] Red Hat Ceph Storage Reporter: Milind Changire <mchangir>
Component: CephFSAssignee: Milind Changire <mchangir>
Status: CLOSED ERRATA QA Contact: Hemanth Kumar <hyelloji>
Severity: high Docs Contact: Akash Raj <akraj>
Priority: unspecified    
Version: 5.3CC: akraj, ceph-eng-bugs, cephqe-warriors, gfarnum, hyelloji, vshankar
Target Milestone: ---Keywords: Rebase
Target Release: 6.1Flags: hyelloji: needinfo-
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
.Pool-level snaps for pools attached to a Ceph File System are disabled Previously, the pool-level snaps and mon-managed snaps had their own snap ID namespace and this caused a clash between the IDs, and the Ceph Monitor was unable to uniquely identify a snap as to whether it is a pool-level snap or a mon-managed snap. Due to this, there were chances for the wrong snap to get deleted when referring to an ID, which is present in the set of pool-level snaps and mon-managed snaps. With this fix, the pool-level snaps for the pools attached to a Ceph File System are disabled and no clash of pool IDs occurs. Hence, no unintentional data loss happens when a CephFS snap is removed.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2023-06-15 09:16:51 UTC Type: Bug
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: 2192813    

Description Milind Changire 2023-02-09 11:09:07 UTC 
Description of problem:
The MDS allocates its own snapids. In general, the monitor allocates self-managed snapids for librados users.

We need to prevent this colliding. Probably by disabling monitor snapid allocation on pools in the FSMap.

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Comment 19 Milind Changire 2023-05-16 07:36:19 UTC 
@akraj Please replace "mon-manged snaps" with "fs-level snaps" in the DocText
Comment 21 errata-xmlrpc 2023-06-15 09:16:51 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 (Moderate: Red Hat Ceph Storage 6.1 security and 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/RHSA-2023:3623
Comment 22 Red Hat Bugzilla 2023-10-14 04:25:36 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days