Bug 2107407

Summary:	[RHCS 5.3] 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:	Harsh Kumar <hakumar>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.2	CC:	akupczyk, amathuri, bhubbard, ceph-eng-bugs, cephqe-warriors, choffman, hakumar, ksirivad, lflores, nojha, pdhange, pdhiran, rfriedma, rmandyam, rzarzyns, sostapov, sseshasa, sunnagar, tserlin, vereddy, vumrao
Target Milestone:	---
Target Release:	5.3z1
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ceph-16.2.10-120.el8cp	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:	2107406	Environment:
Last Closed:	2023-02-28 10:05:14 UTC	Type:	---
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:	2107406
Bug Blocks:

Description Vikhyat Umrao 2022-07-14 22:55:46 UTC

+++ This bug was initially created as a clone of Bug #2107406 +++

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 19 Scott Ostapovicz 2023-02-06 17:06:49 UTC

 Missed the 5.3 z1 window.  Moving to 6.1.  Adam, if you decide you can cherry pick this to the 5.3 z1 branch by Feb 8th, then go ahead and retarget this to 5.3 z1.

Comment 27 Harsh Kumar 2023-02-21 16:09:02 UTC

Moving this to verified state as the behavior observed is as per expectation. [Confirmed from Adam]

Comment 29 errata-xmlrpc 2023-02-28 10:05:14 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 (Important: Red Hat Ceph Storage 5.3 Bug fix and security 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-2023:0980

Comment 30 Red Hat Bugzilla 2023-09-18 04:41:59 UTC

The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days