Bug 1380021

Summary:	Bring qemu-block xlator back to life
Product:	[Community] GlusterFS	Reporter:	Prasanna Kumar Kalever <prasanna.kalever>
Component:	qemu-block	Assignee:	Prasanna Kumar Kalever <prasanna.kalever>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	mainline	CC:	bugs, prasanna.kalever
Target Milestone:	---	Keywords:	FutureFeature
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Last Closed:	2017-03-20 11:04:35 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Prasanna Kumar Kalever 2016-09-28 13:34:26 UTC

Description of problem:
Revert "qemu-block: deprecated/defunct, remove from tree"

qemu-block xlator addesses the file snapshots for the block store
requirements.

This xlator exposes a qcow2 file as a raw file for client, also play
a key role in achieving file snapshots feature  in gluster
(qcow2 based) both internal and external.

Someone like a tcmu-runner (service which exposes a file in userspace
as a iSCSI block backend, intern taking support of tcmu kernel module)
who can communicate with gluster using gfapi can take qemu-block
xlator advantage.


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

Comment 1 Worker Ant 2016-09-28 14:01:10 UTC

REVIEW: http://review.gluster.org/15588 (file snapshots: qemu-block: back to life) posted (#1) for review on master by Prasanna Kumar Kalever (pkalever)

Comment 2 Worker Ant 2016-09-28 14:01:13 UTC

REVIEW: http://review.gluster.org/15589 (Revert "qemu-block: mop leftover code") posted (#1) for review on master by Prasanna Kumar Kalever (pkalever)

Comment 3 Niels de Vos 2016-09-30 09:49:01 UTC

Please create a feature page for this, or start a discussion on gluster-devel (and link the page/thread here).

Comment 4 Prasanna Kumar Kalever 2017-03-20 11:04:35 UTC

This is not needed anymore, gluster-block decide to solve the snapshots with qemu-tcmu