Use the 'flat' flag for 'query-named-block-nodes' if qemu supports
QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT in qemuBlockGetNamedNodeData.
We don't need the data so plumb in whether qemu supports the
'flat' output.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Modern qemu allows to skip the nested redundant data in the output of
query-named-block-nodes. Plumb in the support for the argument that
enables it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace qemuMonitorBlockGetNamedNodeData by qemuBlockGetNamedNodeData.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Detect the presence of the flag and make it available internally as
QEMU_CAPS_QMP_QUERY_NAMED_BLOCK_NODES_FLAT.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The monitor password callback was removed long time ago but the callback
type and variable were left around. Finish the cleanup.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Update to v4.2.0-1858-gdb736e0437 which contains my commit for 'flat'
output of 'query-named-block-nodes'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Format the 'vhost-user-fs' device on the QEMU command line.
This device provides shared file system access using the FUSE protocol
carried over virtio.
The actual file server is implemented in an external vhost-user-fs device
backend process.
https://bugzilla.redhat.com/show_bug.cgi?id=1694166
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Look into /usr/share/qemu/vhost-user to see whether we can find
a suitable virtiofsd binary, in case the user did not provide one
in the domain XML.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Wire up the code to put virtiofsd in the emulator cgroup on domain
startup.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Start virtiofsd for each <filesystem> device using it.
Pre-create the socket for communication with QEMU and pass it
to virtiofsd.
Note that virtiofsd needs to run as root.
https://bugzilla.redhat.com/show_bug.cgi?id=1694166
Introduced by QEMU commit a43efa34c7d7b628cbf1ec0fe60043e5c91043ea
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
This is not yet supported.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Add a 'virtiofsd_debug' option for tuning whether to run virtiofsd
in debug mode.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Add more elements for tuning the virtiofsd daemon
and the vhost-user-fs device:
<driver type='virtiofs' queue='1024' xattr='on'>
<binary path='/usr/libexec/virtiofsd'>
<cache mode='always'/>
<lock posix='off' flock='off'/>
</binary>
</driver>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Introduce a new 'virtiofs' driver type for filesystem.
<filesystem type='mount' accessmode='passthrough'>
<driver type='virtiofs'/>
<source dir='/path'/>
<target dir='mount_tag'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</filesystem>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Add a document describing the usage of virtiofs.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Introduced by QEMU commit 98fc1ada4cf70af0f1df1a2d7183cf786fc7da05
virtio: add vhost-user-fs base device
Released in QEMU v4.2.0.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Some validation check might reject unprivileged drivers in the future.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Pass logManager to qemuExtDevicesStart for future usage.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Allow adding new groups without changing indentation.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
A few new companies have contributed to libvirt since the last
time the gitdm configuration was updated.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We already have one instance of it being used in our git history,
and more are probably bound to show up eventually.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As of libvirt-jenkins-ci commit e41e341f0d8f, we no longer bake
this environment variable into our container images.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We document steps how to fix images if they are rejected for missing
the 'backing file format' field. Document also how to securely probe
the image format if it's unknown.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The default memlock limit is 64k which is not enough to start a single
VM. The requirements for one VM are 12k, 8k for eBPF map and 4k for eBPF
program, however, it fails to create eBPF map and program with 64k limit.
By testing I figured out that the minimal limit is 80k to start a single
VM with functional eBPF and if I add 12k I can start another one.
This leads into following calculation:
80k as memlock limit worked to start a VM with eBPF which means there
is 68k of lock memory that I was not able to figure out what was using
it. So to get a number for 4096 VMs:
68 + 12 * 4096 = 49220
If we round it up we will get 64M of memory lock limit to support 4096
VMs with default map size which can hold 64 entries for devices.
This should be good enough as a sane default and users can change it if
the need to.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1807090
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Whenever there is a guest CPU configured in domain XML, we will call
some CPU driver APIs to validate the CPU definition and check its
compatibility with the hypervisor. Thus domains with guest CPU
specification can only be started if the guest architecture is supported
by the CPU driver. But we would add a default CPU to any domain as long
as QEMU reports it causing failures to start any domain on affected
architectures.
https://bugzilla.redhat.com/show_bug.cgi?id=1805755
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Allow format probing to work around lazy clients which did not specify
their format in the overlay. Format probing will be allowed only, if we
are able to probe the image, the probing result was successful and the
probed image does not have any backing or data file.
This relaxes the restrictions which were imposed in commit 3615e8b39b
in cases when we know that the image probing will not result in security
issues or data corruption.
We perform the image format detection and in the case that we were able
to probe the format and the format does not specify a backing store (or
doesn't support backing store) we can use this format.
With pre-blockdev configurations this will restore the previous
behaviour for the images mentioned above as qemu would probe the format
anyways. It also improves error reporting compared to the old state as
we now report that the backing chain will be broken in case when there
is a backing file.
In blockdev configurations this ensures that libvirt will not cause data
corruption by ending the chain prematurely without notifying the user,
but still allows the old semantics when the users forgot to specify the
format.
Users thus don't have to re-invent when image format detection is safe
to do.
The price for this is that libvirt will need to keep the image format
detector still current and working or replace it by invocation of
qemu-img.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
While our code can detect ISO as a separate format, qemu does not use it
as such and just passes it through as raw. Add conversion for detected
parts of the backing chain so that the validation code does not reject
it right away.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Now that this file no longer transitively includes
domain_conf.h, it can be included here.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Make the header easier to read and let the compiler inline
what it wants.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is pulled in via domain_conf.h somehow, but it is directly used.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This file uses the virNetDevBandwidth*Floor helpers
without including the correct include,
relying on virnetworkportdef.h to include it.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 17f430eb5c
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The ParseNode function takes arguments with types
from libxml.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The network port XML files were not including any usage of vlan
tags or port options, and one of the files was not even processed.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
There are a lots of strings being handled inside some LXC functions.
They can be moved to g_autofree to avoid declaring a return value to get
proper code cleanups. This commit is changing functions from
lxc_{controller,cgroup,fuse} only.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
