[Bugs] [Bug 1380021] New: Bring qemu-block xlator back to life

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1380021

            Bug ID: 1380021
           Summary: Bring qemu-block xlator back to life
           Product: GlusterFS
           Version: mainline
         Component: qemu-block
          Assignee: bugs at gluster.org
          Reporter: prasanna.kalever at redhat.com
                CC: bugs at gluster.org



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

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