Bug 1382695

Summary:	[RFE 7.4] support for virtio-vsock - glibc
Product:	Red Hat Enterprise Linux 7	Reporter:	Ademar Reis <areis>
Component:	glibc	Assignee:	glibc team <glibc-bugzilla>
Status:	CLOSED NOTABUG	QA Contact:	qe-baseos-tools-bugs
Severity:	medium	Docs Contact:
Priority:	high
Version:	7.3	CC:	ashankar, fweimer, hannsj_uhl, huding, john.spray, juzhang, knoel, lijin, lmiksik, mnewsome, mtessun, mzhan, pfrankli, qzhang, ssaha, stefanha, virt-bugs, virt-maint, xfu, yzimmerm
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	7.4
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:	1291282	Environment:
Last Closed:	2017-01-27 14:11:47 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:
Bug Depends On:	1291282
Bug Blocks:	1291284, 1291286, 1291851, 1294879, 1294880, 1294884, 1299988, 1315822, 1359843, 1363787, 1378137, 1415819, 1518995, 1518996, 1518997

Description Ademar Reis 2016-10-07 12:43:32 UTC

Description of problem:

We now have virtio-vsock support in QEMU/KVM, which implements a host/guest communication device, allowing applications from guest and host to communicate without the need of a network. It implements the POSIX Sockets API and supports both SOCK_STREAM and SOCK_DGRAM. VSOCK itself has been available in the linux kernel since 3.9.

We're trying to push glibc patches upstream to add AF_VSOCK support to getnameinfo(3) and getaddrinfo(3): https://sourceware.org/ml/libc-alpha/2016-09/msg00580.html

For virtio-vsock support in QEMU/kernel, see bug 1291282 and bug 1291284.

The primary use-case for this feature is Virt-FS, where we export a NFS mount to the guest without needing to setup a TCP/IP network. For NFS BZs, see bug 1291286 and bug 1294880.

It's also going to be required by Ceph in OpenStack, see bug 1363787.

+++ This bug was initially created as a clone of Bug #1291282 +++

Comment 1 Carlos O'Donell 2016-10-07 14:28:20 UTC

Just to be clear, these changes need to land upstream before they can be considered acceptable in RHEL7.

I encourage everyone to continue the upstream discussion to reach consensus on a solution.

Comment 2 Stefan Hajnoczi 2017-01-27 14:11:47 UTC

I am not pursuing this further.  After adding AF_VSOCK support to qemu-guest-agent, systemd, and nfs-utils without getaddrinfo(3) there is no immediate need for this change.