Bug 2168541 - mon: prevent allocating snapids allocated for CephFS
Summary: mon: prevent allocating snapids allocated for CephFS
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: CephFS
Version: 5.3
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ---
: 6.1
Assignee: Milind Changire
QA Contact: Hemanth Kumar
Akash Raj
URL:
Whiteboard:
Depends On:
Blocks: 2192813
TreeView+ depends on / blocked
 
Reported: 2023-02-09 11:09 UTC by Milind Changire
Modified: 2023-10-14 04:25 UTC (History)
6 users (show)

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.
Clone Of:
Environment:
Last Closed: 2023-06-15 09:16:51 UTC
Embargoed:
hyelloji: needinfo-

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHCEPH-6119 0 None None None 2023-02-09 11:09:25 UTC

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.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Expected results:


Additional info:
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
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