Bug 2001044

Summary:	[RFE] Request for warning when snapshots are created too large or too numerous
Product:	Red Hat Enterprise Linux 8	Reporter:	John Pittman <jpittman>
Component:	lvm2	Assignee:	Zdenek Kabelac <zkabelac>
lvm2 sub component:	Snapshots	QA Contact:	cluster-qe <cluster-qe>
Status:	NEW ---	Docs Contact:
Severity:	low
Priority:	low	CC:	agk, bmr, heinzm, jbrassow, msnitzer, prajnoha, zkabelac
Version:	8.4	Keywords:	FutureFeature, Triaged
Target Milestone:	rc
Target Release:	---
Hardware:	x86_64
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description John Pittman 2021-09-03 15:48:19 UTC

Description of problem:

When a system has very large snapshots or a very high number of snapshots, system performance and memory usage can suffer.

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

kernel-4.18.0-305.12.1.el8_4
lvm2-2.03.11-5.el8
lvm2-libs-2.03.11-5.el8
device-mapper-1.02.175-5.el8
device-mapper-libs-1.02.175-5.el8

Expected results:

When the number of snapshots gets too high or they are very large, a warning and confirmation should be displayed.  This will keep end users from being surprised when system is impacted.