Bug 2107406

Summary:	[RHCS 6] pacific doesn't defer small writes for pre-pacific hdd osds
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Vikhyat Umrao <vumrao>
Component:	RADOS	Assignee:	Adam Kupczyk <akupczyk>
Status:	CLOSED ERRATA	QA Contact:	skanta
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.2	CC:	akraj, akupczyk, amathuri, bhubbard, ceph-eng-bugs, cephqe-warriors, choffman, ekristov, ksirivad, lflores, nojha, pdhange, pdhiran, rfriedma, rmandyam, rzarzyns, sseshasa, vumrao
Target Milestone:	---
Target Release:	6.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ceph-17.2.5-23.el9cp	Doc Type:	Bug Fix
Doc Text:	.The small writes are deferred Previously, Ceph would defer writes while allocating units. When the allocation unit was large, like 64 K, no small write was eligible for deferring. With this update, the small writes are deferred as they operate on disk blocks even when large allocation units are deferring.	Story Points:	---
Clone Of:
Clones:	2107407 (view as bug list)		Environment:
Last Closed:	2023-03-20 18:57:08 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:	2107407, 2126050

Description Vikhyat Umrao 2022-07-14 22:53:58 UTC

Description of problem:

pacific doesn't defer small writes for pre-pacific hdd osds

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

Upstream pacific / Downstream RHCS 5.1 and above
Upstream quincy / Downstream RHCS 6.0


Upstream trackers:

https://tracker.ceph.com/issues/56488
https://lists.ceph.io/hyperkitty/list/dev@ceph.io/thread/6YRLAUDKC2QVIC3LIAGL4ZAOIRTQTVMR/

Comment 26 errata-xmlrpc 2023-03-20 18:57:08 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 6.0 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/RHBA-2023:1360