Bug 2175307 - [RFE] Catch MDS damage to the dentry's first snapid
Summary: [RFE] Catch MDS damage to the dentry's first snapid
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: CephFS
Version: 6.0
Hardware: All
OS: All
urgent
high
Target Milestone: ---
: 6.1
Assignee: Patrick Donnelly
QA Contact: Hemanth Kumar
Akash Raj
URL:
Whiteboard:
Depends On:
Blocks: 2181949 2192813
TreeView+ depends on / blocked
 
Reported: 2023-03-03 20:22 UTC by Patrick Donnelly
Modified: 2023-06-15 09:16 UTC (History)
9 users (show)

Fixed In Version: ceph-17.2.6-29.el9cp
Doc Type: Bug Fix
Doc Text:
.A code assert is added to the Ceph Manager daemon service to detect metadata corruption Previously, a type of snapshot-related metadata corruption would be introduced by the manager daemon service for workloads running Postgres, and possibly others. With this fix, a code assert is added to the manager daemon service which is triggered if a new corruption is detected. This reduces the proliferation of the damage, and allows the collection of logs to ascertain the cause. [NOTE] ==== If daemons crash after the cluster is upgraded to {storage-product} 6.1, contact link:https://access.redhat.com/support/contact/technicalSupport/[_Red Hat support_] for analysis and corrective action. ====
Clone Of:
: 2181949 (view as bug list)
Environment:
Last Closed: 2023-06-15 09:16:51 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Ceph Project Bug Tracker 38452 0 None None None 2023-03-03 20:22:56 UTC
Ceph Project Bug Tracker 58482 0 None None None 2023-03-03 20:22:56 UTC
Red Hat Issue Tracker RHCEPH-6231 0 None None None 2023-03-03 20:23:30 UTC
Red Hat Knowledge Base (Solution) 7010978 0 None None None 2023-05-12 17:11:17 UTC

Description Patrick Donnelly 2023-03-03 20:22:56 UTC 
Description of problem:

This RFE is for a functionality in the MDS to detect specific damage to the metadata "dentries". The damage is associated with a long-standing bug (#38452).

This change will catch the damage before it's persisted. If **new** damage is detected to be written to persistent storage (i.e. RADOS), the MDS will abort to avoid persisting damage. This will hopefully have the benefit of providing logs in the same time period that the damage was created for analysis.

https://tracker.ceph.com/issues/38452
https://tracker.ceph.com/issues/58482

Documentation for support when customers encounter the abort will be forthcoming and available before 6.1 is released.
Comment 9 Manny 2023-05-12 17:11:17 UTC 
Linked KCS #7010978, (https://access.redhat.com/solutions/7010978)

BR
Manny
Comment 12 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
Note You need to log in before you can comment on or make changes to this bug.