The `-o` option is the legacy way to configure virtiofsd, inherited
from the C implementation. The rust implementation honours it for
compatibility but it logs deprecation warnings.
Let's use the replacement options in the go shim code. Also drop
references to `-o` from the configuration TOML file.
Fixes#7111
Signed-off-by: Greg Kurz <groug@kaod.org>
(cherry picked from commit a43ea24dfc)
Signed-off-by: Greg Kurz <groug@kaod.org>
The C implementation of virtiofsd had some kind of limited support
for remote POSIX locks that was causing some workflows to fail with
kata. Commit 432f9bea6e hard coded `-o no_posix_lock` in order
to enforce guest local POSIX locks and avoid the issues.
We've switched to the rust implementation of virtiofsd since then,
but it emits a warning about `-o` being deprecated.
According to https://gitlab.com/virtio-fs/virtiofsd/-/issues/53 :
The C implementation of the daemon has limited support for
remote POSIX locks, restricted exclusively to non-blocking
operations. We tried to implement the same level of
functionality in #2, but we finally decided against it because,
in practice most applications will fail if non-blocking
operations aren't supported.
Implementing support for non-blocking isn't trivial and will
probably require extending the kernel interface before we can
even start working on the daemon side.
There is thus no justification to pass `-o no_posix_lock` anymore.
Signed-off-by: Greg Kurz <groug@kaod.org>
(cherry picked from commit 8e00dc6944)
Signed-off-by: Greg Kurz <groug@kaod.org>
The rust implementation of virtiofsd always runs foreground and
spits a deprecation warning when `-f` is passed.
Signed-off-by: Greg Kurz <groug@kaod.org>
(cherry picked from commit 2a15ad9788)
Signed-off-by: Greg Kurz <groug@kaod.org>
There is a race condition when virtiofsd is killed without finishing all
the clients. Because of that, when a pod is stopped, QEMU detects
virtiofsd is gone, which is legitimate.
Sending a SIGTERM first before killing could introduce some latency
during the shutdown.
Fixes#6757.
Backport of #6959.
Signed-off-by: Beraldo Leal <bleal@redhat.com>
(cherry picked from commit 0e47cfc4c7)
Fix path check bypassed issuse introduced by #6082,
use filepath.Clean() to clean path before check
Fixes: #6082
Signed-off-by: XDTG <click1799@163.com>
(cherry picked from commit dc86d6dac3)
Signed-off-by: Greg Kurz <groug@kaod.org>
Normally we return the context when creating a trace span so that the
ordering of spans w.r.t. calls is maintained in tracing output. Add
missing context for StartVM() for Cloud Hypervisor.
Fixes#6271
Signed-off-by: Chelsea Mafrica <chelsea.e.mafrica@intel.com>
Updating this field, as `cpuid` provides host level data, which is not
what a guest would expect for Reduced Phsycial Bits. In almost all
cases, we should be using `1` for the value here.
Amend: Adding unit test change.
Fixes: #5006
Signed-off-by: Larry Dewey <larry.dewey@amd.com>
For kata containers, rootfs is used in the read-only way.
EROFS can noticably decrease metadata overhead.
On the basis of supporting the EROFS file system, it supports using the config parameter to switch the file system used by rootfs.
Fixes: #6063
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: yaoyinnan <yaoyinnan@foxmail.com>
launchClh already has a timeout of 10seconds for launching clh, e.g.
if launchClh or setupVirtiofsDaemon takes a few seconds the context's
deadline will already be expired by the time it reaches bootVM
Fixes#6240
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
Change cache mod from literal to const and place them in one place.
Also set default cache mode from `none` to `never` in
`pkg/katautils/config-settings.go.in`.
Fixes: #6151
Signed-off-by: Bin Liu <bin@hyper.sh>
Normally, the span name should be the same as the function name, and the log subsystem should not contain spaces.
Fixes#6153
Signed-off-by: joannejchen <chenjjoanne@gmail.com>
The QEMU log file is essentially about fine grain tracing of QEMU
internals and mostly useful for developpers, not production. Notably,
the log file isn't limited in size, nor rotated in any way. It means
that a container running in the VM could possibly flood the log file
with a guest triggerable trace. For example, on openshift, the log
file is supposed to reside on a per-VM 14 GiB tmpfs mount. This means
that each pod running with the kata runtime could potentially consume
this amount of host RAM which is not acceptable.
Error messages are best collected from QEMU's stderr as kata is doing
now since PR #5736 was merged. Drop support for the QEMU log file
because it doesn't bring any value but can certainly do harm.
Fixes#6173
Signed-off-by: Greg Kurz <groug@kaod.org>
LaunchQemu now connects a pipe to QEMU's stderr and makes it
usable by callers through a Go io.ReadCloser object. As
explained in [0], all messages should be read from the pipe
before calling cmd.Wait : introduce a LogAndWait helper to handle
that.
Fixes#5780
Signed-off-by: Greg Kurz <groug@kaod.org>
QEMU has always been started daemonized since the beginning. I
could not find any justification for that though, but it certainly
introduces a problem : QEMU stops logging errors when started this
way, which isn't accaptable from a support standpoint. The QEMU
community discourages the use of -daemonize ; mostly because
libvirt, QEMU's primary consummer, doesn't use this option and
prefers getting errors from QEMU's stderr through a pipe in order
to enforce rollover.
Now that virtcontainers knows how to start QEMU with a pre-
established QMP connection, let's start QEMU without -daemonize.
This requires to handle the reaping of QEMU when it terminates.
Since cmd.Wait() is blocking, call it from a goroutine.
Signed-off-by: Greg Kurz <groug@kaod.org>
LaunchCustomQemu() currently starts QEMU with cmd.Run() which is
supposed to block until the child process terminates. This assumes
that QEMU daemonizes itself, otherwise LaunchCustomQemu() would
block forever. The virtcontainers package indeed enables the
Daemonize knob in the configuration but having such an implicit
dependency on a supposedly configurable setting is ugly and fragile.
cmd.Run() is :
func (c *Cmd) Run() error {
if err := c.Start(); err != nil {
return err
}
return c.Wait()
}
Let's open-code this : govmm calls cmd.Start() and returns the
cmd to virtcontainers which calls cmd.Wait().
If QEMU doesn't start, e.g. missing binary, there won't be any
errors to collect from QEMU output. Just drop these lines in govmm.
Similarily there won't be any log file to read from in virtcontainers.
Drop that as well.
Signed-off-by: Greg Kurz <groug@kaod.org>
Running QEMU daemonized ensures that the QMP socket is ready to
accept connections when LaunchQemu() returns. In order to be
able to run QEMU undaemonized, let's handle that part upfront.
Create a listener socket and connect to it. Pass the listener
to QEMU and pass the connected socket to QMP : this ensures
that we cannot fail to establish QMP connection and that we
can detect if QEMU exits before accepting the connection.
This is basically what libvirt does.
Signed-off-by: Greg Kurz <groug@kaod.org>
Mount handling is often unique in Linux. Let's ensure that the common
parts remain in mount.go, while Linux speific parts are within a linux
file.
Fixes: #6049
Signed-off-by: Eric Ernst <eric_ernst@apple.com>
This PR fixes a misspelling in the error message when it tries to run
a system without Confidential computing support.
Fixes#6042
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>
With `disable_netns=true`, we should never scan the sandbox netns which
is the host netns in such case.
Fixes: #6021
Signed-off-by: Peng Tao <bergwolf@hyper.sh>
In TestHandleHugepages it will do a mount operation with different pagesizes,
but some systems only support 2M pagesize, test for a 1g pagesize will fail.
This commit try to fix by only mount pagesizes under `/sys/kernel/mm/hugepages`, which are
supported to mount by the OS.
Fixes: #6029
Signed-off-by: Bin Liu <bin@hyper.sh>
Fixes: #6004
A Virtualization.framework based Hypervisor implementation.
This is just stubs for now to eventually get this building.
Signed-off-by: Samuel Ortiz <s.ortiz@apple.com>
Signed-off-by: Danny Canter <danny@dcantah.dev>
Fixes: #6002
As a first pass for testing, let's add a skeleton for filesystem
sharing support on Darwin..
Signed-off-by: Eric Ernst <eric_ernst@apple.com>
Signed-off-by: Danny Canter <danny@dcantah.dev>
Fixes: #5993
Several tests utilize linux'isms like Mounts, bindmounts, vsock etc.
Let's ensure that these are still tested on Linux, but that we also skip
these tests when on other operating systems (Darwin). This commit just
moves tests; there shouldn't be any functional test changes. While the
tests still won't be runnable on Darwin/other hosts yet, this is a necessary
step forward.
Signed-off-by: Eric Ernst <eric_ernst@apple.com>
Signed-off-by: Danny Canter <danny@dcantah.dev>
This is needed in order to have Moby / Docker working properly with
Cloud Hypervisor, as Moby / Docker relies on hotplugging a network
device to the VM as a preStartHook.
Fixes: #5997
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
