A file based memory backend mapped to the host, fot eg: '/dev/shm' will
be used by virtio-fs for performance reasons. This change is a generic
implementation of that for kata. This will be enabled default for
virtio-fs negating the need to enable hugepages in that scenario. This
option can be used without virtio-fs by setting 'file_mem_backend' to
the location in the configuration file. Default value is an empty
string.
Fixes: #1656
Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>
The systemd units and files that are not needed in Kata Containers,
are removed when the image is created, therefore we don't need to mask
them.
fixes#1704
Signed-off-by: Julio Montes <julio.montes@intel.com>
There are still some systemd units that fail to start for different
reasons. Disable these systemd units to improve boot time.
fixes#1686
Signed-off-by: Julio Montes <julio.montes@intel.com>
Add a few minimal documents to allow all the documentation in this
repository to be navigated from the top-level README.
Fixes#1681.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
We should refine unit test which involves func SupportsVsocks and newly
reconstructed struct kernelModule.
Fixes: #1512
Signed-off-by: Penny Zheng <penny.zheng@arm.com>
Skip TestHostNetworkingRequested test as nsfs is not supported on
older kernel versions. Currently, CentOS has issues with this test a
is using a kernel version of 3.10 and to run this test we need a
kernel version greater than 3.19.
Fixes#1629
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>
It's useful to know whether virtio-9p or virtio-fs is being used. Add
the status to the kata-env output.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Several cache modes are supported by virtio-fs. They affect the
performance and consistency characteristics of the file system.
For the time being cache="none" is recommended, but the other modes can
be experimented with.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Add VirtioFSCacheSize aka virtio_fs_cache_size option
to set the size (in MiB) of the DAX cache.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Add a config option to select between virtio-9p and virtiofs. This
option currently has no effect and will be used in a later patch.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Add configuration options to support the various Kata agent tracing
modes and types. See the comments in the built configuration files for
details:
- `cli/config/configuration-fc.toml`
- `cli/config/configuration-qemu.toml`
Fixes#1369.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
Previously, the agent behaviour was controlled entirely using the
`kernel_params=` config option. This mechanism suffers from a subtle
problem - the runtime is not aware of how the agent will behave.
From now on, all significant agent options will be controlled from the
agent section in the configuration file. This allows the runtime to be
more aware of -- and in control of -- such agent settings. It would also
allow the underlying kernel CLI options to be modified in the future if
required.
This PR adds the only useful agent option as an explicit option by
adding an `enable_debug=true` option to the Kata agent section in
`configuration.toml`. This allows controlling agent debug to be handled
in the same manner as the other debug options.
This change is somewhat foundational: it permits the agent to be handled
consistently with other config file sections which is useful, but
arguably not essential (the old way worked). However, the new way of
handling agent options will be essential when introducing agent tracing
control as the runtime must be aware of the agent trace mode to allow
the runtime to modify its behaviour accordingly.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
Replace the two versions of `makeRuntimeConfigFileData()` with a single
`MakeRuntimeConfigFileData()` in a new `katatestutils` package and a new
`katautils.GetDefaultHypervisorConfig()` to query the default hypervisor
details.
This isn't ideal but a new package had to be created to avoid circular
dependencies. It was also required since test code cannot be exported
from a package.
Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
This reverts commit 196661bc0d.
Reverting because cri-o with devicemapper started
to fail after this commit was merged.
Fixes: #1574.
Signed-off-by: Salvador Fuentes <salvador.fuentes@intel.com>
We can use the same data structure to describe both of them.
So that we can handle them similarly.
Fixes: #1566
Signed-off-by: Peng Tao <bergwolf@hyper.sh>
Clear Containers proxy and shim are no longer supported. This
was mentioned in issue #1113. Their functionalities are thus
removed from the runtime.
Fixes#1419
Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
The hyperstart agent has not been supported in kata since 2.1,
so remove it as a component to kata. Mentioned in issue #1113.
Fixes: #1419
Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
This introduces a new storage type: local. Local storage type will
tell the kata-agent to create an empty directory in the sandbox
directory within the VM.
K8s host emptyDirs will then use the local storage type and mount it
inside each container. By doing this, we utilise the storage medium
that the sandbox uses. In most cases this will be 9p.
If the VM is using device mapper for container storage, the containers
will benefit from the better performance of device mapper for
host emptyDir.
Fixes#1472
Signed-off-by: Alex Price <aprice@atlassian.com>
When used builtin proxy, it's better to config the proxy
debug based on debug setting of runtime in kata configuration.
Fixes:#1495
Signed-off-by: lifupan <lifupan@gmail.com>
container's rootfs is a string type, which cannot represent a
block storage backed rootfs which hasn't been mounted.
Change it to a mount alike struct as below:
RootFs struct {
// Source specify the BlockDevice path
Source string
// Target specify where the rootfs is mounted if it has been mounted
Target string
// Type specifies the type of filesystem to mount.
Type string
// Options specifies zero or more fstab style mount options.
Options []string
// Mounted specifies whether the rootfs has be mounted or not
Mounted bool
}
If the container's rootfs has been mounted as before, then this struct can be
initialized as: RootFs{Target: <rootfs>, Mounted: true} to be compatible with
previous case.
Fixes:#1158
Signed-off-by: lifupan <lifupan@gmail.com>
when use shim v2 interface to run container, no need to use kata-proxy
and kata-shim, remove kata-proxy and kata-shim in config file will cause
panic since type assertion. add check to avoid panic
Fixes: #1440
Signed-off-by: Ace-Tang <aceapril@126.com>
k8s host empty-dir is equivalent to docker volumes.
For this case, we should just use the host directory even
for system directories.
Move the isEphemeral function to virtcontainers to not
introduce cyclic dependency.
Fixes#1417
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
gometalinter is deprecated and will be archived April '19. The
suggestion is to switch to golangci-lint which is apparently 5x faster
than gometalinter.
Partially Fixes: #1377
Signed-off-by: Ganesh Maharaj Mahalingam <ganesh.mahalingam@intel.com>
After code check and test, found VMCache can work with vsock.
Remove the code that prohibit them from working together.
Fixes: #1400
Signed-off-by: Hui Zhu <teawater@hyper.sh>
systemd-random-seed service fails if the rootfs is a read-only fs.
systemd-random-seed restores the random seed of the system at early
boot and saves it at shutdown, since kata containers are one boot machines
this service is not needed.
Signed-off-by: Julio Montes <julio.montes@intel.com>
We were considering all empty-dir k8s volumes as backed by tmpfs.
However they can be backed by a host directory as well.
Pass those as 9p volumes, while tmpfs volumes are handled as before,
namely creating a tmpfs directory inside the guest.
The only way to detect "Memory" empty-dirs is to actually check if the
volume is mounted as a tmpfs mount, since any information of k8s
"medium" is lost at the OCI layer.
Fixes#1341
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
Fixes#1226
Add new flag "experimental" for supporting underworking features.
Some features are under developing which are not ready for release,
there're also some features which will break compatibility which is not
suitable to be merged into a kata minor release(x version in x.y.z)
For getting these features above merged earlier for more testing, we can
mark them as "experimental" features, and move them to formal features
when they are ready.
Signed-off-by: Wei Zhang <zhangwei555@huawei.com>
