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Bug 1907706

Summary:	[RFE] Multiple MDS Scrub
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Patrick Donnelly <pdonnell>
Component:	CephFS	Assignee:	Patrick Donnelly <pdonnell>
Status:	CLOSED ERRATA	QA Contact:	Hemanth Kumar <hyelloji>
Severity:	high	Docs Contact:	Ranjini M N <rmandyam>
Priority:	high
Version:	5.0	CC:	ceph-eng-bugs, hyelloji, kdreyer, rmandyam, sweil
Target Milestone:	---	Keywords:	FutureFeature
Target Release:	5.0
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:	ceph-16.0.0-8633.el8cp	Doc Type:	Enhancement
Doc Text:	.Ceph File System (CephFS) scrub now works with multiple active MDS Previously, users had to set the parameter `max_mds=1` and wait for only one active metadata server (MDS) to run Ceph File System (CephFS) scrub operations. With this release, irrespective of the value of `mds_max`, users can execute scrub on rank `0` with multiple active MDS. See the link:{cephfs-guide}#configuring-multiple-active-metadata-server-daemons_fs[_Configuring multiple active Metadata Server daemons_] section in the _{storage-product} File System Guide_ for more information.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-08-30 08:27:16 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:	1794781
Bug Blocks:	1959686

Description Patrick Donnelly 2020-12-15 02:41:07 UTC

Description of problem:

In RHCS 4, we gated multiple MDS scrub due to numerous known bugs. This is now considered stable. Documentation for scrub is here:

https://docs.ceph.com/en/latest/cephfs/scrub/

Comment 8 errata-xmlrpc 2021-08-30 08:27:16 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 5.0 bug fix and enhancement), 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-2021:3294