[libvirt] [RFC PATCH 0/9] add virtiofs support (virtio-fs epopee)
https://bugzilla.redhat.com/show_bug.cgi?id=1694166
A work in progress, but I'm sending it now to get the XML
bikesh^Wdiscussion out of the way.
TODO:
* documentation
(due to the requirement of shared memory and therefore
a <numa> topology specification, this probably deserves
a separate article on https://libvirt.org/kbase.html )
* validation - refuse unsupported combinations and block
migration
* remove a few hardcoded values
* figure out the binary path from qemu interop config
* leave queue-size and cache-size on their default values
or expose them in XML
* use FD passing for vhost-user-fs device as well
* clean up the code
Tested with:
commit 320000e72ec0613e164ce9608d865396fb2da278
Author: Linus Torvalds <torvalds(a)linux-foundation.org>
Date: Wed Oct 30 14:17:18 2019 +0100
Merge tag 'iommu-fixes-v5.4-rc5' of
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
and
commit d3d2efbb0e37494708dde359a9d0f492f84833e8
Author: Dr. David Alan Gilbert <dgilbert(a)redhat.com>
CommitDate: 2019-10-24 11:50:55 +0100
virtio-fs: Allow mapping of meta data version table
from https://gitlab.com/virtio-fs/qemu/tree/virtio-fs-dev
git fetch https://gitlab.com/virtio-fs/qemu.git virtio-fs-dev
(not yet merged upstream)
Ján Tomko (9):
qemu: address: take fsdriver type into account
qemu: cmdline: take fsdriver into account
qemu: add QEMU_CAPS_VHOST_USER_FS
wip: tests: add xml2xml tests for virtio-fs
wip: add XML -> ARGV tests for virtio-fs
conf: qemu: add virtio-fs fsdriver type
qemu: pass private data to qemuBuildFilesystemCommandLine
wip: start virtiofsd
wip: build vhost-user-fs device command line
docs/schemas/domaincommon.rng | 1 +
src/conf/domain_conf.c | 1 +
src/conf/domain_conf.h | 2 +
src/qemu/qemu_capabilities.c | 4 +
src/qemu/qemu_capabilities.h | 3 +
src/qemu/qemu_command.c | 67 +++++-
src/qemu/qemu_domain.c | 4 +
src/qemu/qemu_domain_address.c | 35 +++-
src/qemu/qemu_extdevice.c | 191 ++++++++++++++++++
...vhost-user-fs-fd-memory.x86_64-latest.args | 38 ++++
.../vhost-user-fs-fd-memory.xml | 38 ++++
...vhost-user-fs-hugepages.x86_64-latest.args | 42 ++++
.../vhost-user-fs-hugepages.xml | 67 ++++++
tests/qemuxml2argvtest.c | 9 +
.../vhost-user-fs-fd-memory.x86_64-latest.xml | 1 +
.../vhost-user-fs-hugepages.x86_64-latest.xml | 1 +
tests/qemuxml2xmltest.c | 3 +
17 files changed, 493 insertions(+), 14 deletions(-)
create mode 100644 tests/qemuxml2argvdata/vhost-user-fs-fd-memory.x86_64-latest.args
create mode 100644 tests/qemuxml2argvdata/vhost-user-fs-fd-memory.xml
create mode 100644 tests/qemuxml2argvdata/vhost-user-fs-hugepages.x86_64-latest.args
create mode 100644 tests/qemuxml2argvdata/vhost-user-fs-hugepages.xml
create mode 120000 tests/qemuxml2xmloutdata/vhost-user-fs-fd-memory.x86_64-latest.xml
create mode 120000 tests/qemuxml2xmloutdata/vhost-user-fs-hugepages.x86_64-latest.xml
--
2.21.0