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Bug 2390060

Summary: Fix snapdiff result fragmentation
Product: [Red Hat Storage] Red Hat Ceph Storage Reporter: Mahesh Mohan <mamohan>
Component: CephFSAssignee: Kotresh HR <khiremat>
Status: CLOSED ERRATA QA Contact: Hemanth Kumar <hyelloji>
Severity: high Docs Contact:
Priority: unspecified    
Version: 9.0CC: ceph-eng-bugs, cephqe-warriors, hyelloji, khiremat, mamohan, sumr, vshankar
Target Milestone: ---   
Target Release: 9.0   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: ceph-20.1.0-21 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 2390061 (view as bug list) Environment:
Last Closed: 2026-01-29 06:57:45 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: 2390061    

Description Mahesh Mohan 2025-08-21 10:28:19 UTC
Description of problem:
snapdiff results for the same file name can be fragmented, leading to unpredictable behaviour. this can affect sync between mirrors as well since it depends on snapdiff.

Version-Release number of selected component (if applicable):
18.2.7

How reproducible:
Always

Steps to Reproduce(from the tracker):


    Created 2^12 number of files naming 0 to 2^12 - 1 under /SnapdiffDeletionRecreation/bulk and took snap1
    Deleted 0 to 2^11 - 1 entries
    Re-created 2^10 to 2^11 - 1 as directory
    Created 2^12 number of files more naming 2^12 to 2^13 - 1
    Took snap2
    verify snapdiff

Actual results:


Expected results:


Additional info:

Comment 1 Storage PM bot 2025-08-21 10:28:30 UTC
Please specify the severity of this bug. Severity is defined here:
https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_severity.

Comment 17 errata-xmlrpc 2026-01-29 06:57:45 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 9.0 Security and Enhancement 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-2026:1536