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Bug 1396256

Summary:	LVM Thin: Add the option to call 'fstrim' when pool space is running low
Product:	Red Hat Enterprise Linux 7	Reporter:	Jonathan Earl Brassow <jbrassow>
Component:	lvm2	Assignee:	Zdenek Kabelac <zkabelac>
lvm2 sub component:	Thin Provisioning	QA Contact:	cluster-qe <cluster-qe>
Status:	CLOSED CURRENTRELEASE	Docs Contact:
Severity:	unspecified
Priority:	unspecified	CC:	agk, heinzm, jbrassow, msnitzer, prajnoha, prockai, thornber, zkabelac
Version:	7.2
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-07-28 03:27:45 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:

Description Jonathan Earl Brassow 2016-11-17 19:31:52 UTC

Users should be able to have 'fstrim' run on a file system backed by thin-provisioning when the respective thin-pool crosses the fullness threshold.

This can allow the thin-pool to free up discarded space - potentially dropping the pool below the fullness threshold again without having to grow the pool.

Comment 1 Jonathan Earl Brassow 2017-07-28 03:27:45 UTC

This feature has been provided in 7.4.   The user can run anything they want if the produce a script and point lvm.conf:dmeventd/thin_command at it.

Closing my own bug here.