| Commit message (Collapse) | Author | Age |
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Allow the cleanup process (and others) to transition the container from
`stopping` to `exited`. This fixes a race condition detected in #14859
where the cleanup process kicks in _before_ the stopping process can
read the exit file. Prior to this fix, the cleanup process left the
container in the `stopping` state and removed the conmon files, such
that the stopping process also left the container in this state as it
could not read the exit files. Hence, `podman wait` timed out (see the
23 seconds execution time of the test [1]) due to the unexpected/invalid
state and the test failed.
Further turn the warning during stop to a debug message since it's a
natural race due to the daemonless/concurrent architecture and nothing
to worry about.
[NO NEW TESTS NEEDED] since we can only monitor if #14859 continues
flaking or not.
[1] https://storage.googleapis.com/cirrus-ci-6707778565701632-fcae48/artifacts/containers/podman/6210434704343040/html/sys-remote-fedora-36-rootless-host.log.html#t--00205
Fixes: #14859
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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PR https://github.com/containers/common/pull/1071 moved `pkg/hooks` to
`c/common` hence remove that from podman and use `pkg/hooks` from
`c/common`
[NO NEW TESTS NEEDED]
[NO TESTS NEEDED]
Signed-off-by: Aditya R <arajan@redhat.com>
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* Correct spelling and typos.
* Improve language.
Co-authored-by: Ed Santiago <santiago@redhat.com>
Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
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While for some call paths we may be doing this redundantly we need to
make sure the exit code is always read at this point.
[NO NEW TESTS NEEDED] as I do not manage to reproduce the issue which
is very likely caused by a code path not writing the exit code when
running concurrently.
Fixes: #14859
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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We now use the golang error wrapping format specifier `%w` instead of
the deprecated github.com/pkg/errors package.
[NO NEW TESTS NEEDED]
Signed-off-by: Sascha Grunert <sgrunert@redhat.com>
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Fix: Prevent OCI runtime directory remain
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This bug was introduced in https://github.com/containers/podman/pull/8906.
When we use 'podman rm/restart/stop/kill etc...' command to
the container running with --rm, the OCI runtime directory
remains at /run/<runtime name> (root user) or
/run/user/<user id>/<runtime name> (rootless user).
This bug could cause other bugs.
For example, when we checkpoint the container running with
--rm (podman checkpoint --export) and restore it
(podman restore --import) with crun, error message
"Error: OCI runtime error: crun: container `<container id>`
already exists" is outputted.
This error is caused by an attempt to restore the container with
the same container ID as the remaining OCI runtime's container ID.
Therefore, I fix that the cleanupRuntime() function runs to
remove the OCI runtime directory,
even if the container has already been removed by --rm option.
Signed-off-by: Toshiki Sonoda <sonoda.toshiki@fujitsu.com>
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add two new options to the volume create command: copy and nocopy.
When nocopy is specified, the files from the container image are not
copied up to the volume.
Closes: https://github.com/containers/podman/issues/14722
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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the two operations are equivalent since securejoin.SecureJoin() has
solved the symlinks. Prefer the Lstat version though to make sure
symlinks are never resolved and we do not end up using a path on the
host.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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avoid any I/O operation on the volume if the source directory is empty.
This is useful on network file systems (since CAP_DAC_OVERRIDE is not
honored) where the root user might not have enough privileges to
perform an I/O operation on the NFS mount but the user running inside
the container has.
[NO NEW TESTS NEEDED] it needs a setup with a network file system
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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This commit addresses three intertwined bugs to fix an issue when using
Gitlab runner on Podman. The three bug fixes are not split into
separate commits as tests won't pass otherwise; avoidable noise when
bisecting future issues.
1) Podman conflated states: even when asking to wait for the `exited`
state, Podman returned as soon as a container transitioned to
`stopped`. The issues surfaced in Gitlab tests to fail [1] as
`conmon`'s buffers have not (yet) been emptied when attaching to a
container right after a wait. The race window was extremely narrow,
and I only managed to reproduce with the Gitlab runner [1] unit
tests.
2) The clearer separation between `exited` and `stopped` revealed a race
condition predating the changes. If a container is configured for
autoremoval (e.g., via `run --rm`), the "run" process competes with
the "cleanup" process running in the background. The window of the
race condition was sufficiently large that the "cleanup" process has
already removed the container and storage before the "run" process
could read the exit code and hence waited indefinitely.
Address the exit-code race condition by recording exit codes in the
main libpod database. Exit codes can now be read from a database.
When waiting for a container to exit, Podman first waits for the
container to transition to `exited` and will then query the database
for its exit code. Outdated exit codes are pruned during cleanup
(i.e., non-performance critical) and when refreshing the database
after a reboot. An exit code is considered outdated when it is older
than 5 minutes.
While the race condition predates this change, the waiting process
has apparently always been fast enough in catching the exit code due
to issue 1): `exited` and `stopped` were conflated. The waiting
process hence caught the exit code after the container transitioned
to `stopped` but before it `exited` and got removed.
3) With 1) and 2), Podman is now waiting for a container to properly
transition to the `exited` state. Some tests did not pass after 1)
and 2) which revealed the third bug: `conmon` was executed with its
working directory pointing to the OCI runtime bundle of the
container. The changed working directory broke resolving relative
paths in the "cleanup" process. The "cleanup" process error'ed
before actually cleaning up the container and waiting "main" process
ran indefinitely - or until hitting a timeout. Fix the issue by
executing `conmon` with the same working directory as Podman.
Note that fixing 3) *may* address a number of issues we have seen in the
past where for *some* reason cleanup processes did not fire.
[1] https://gitlab.com/gitlab-org/gitlab-runner/-/issues/27119#note_970712864
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
[MH: Minor reword of commit message]
Signed-off-by: Matthew Heon <mheon@redhat.com>
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* Replace "setup", "lookup", "cleanup", "backup" with
"set up", "look up", "clean up", "back up"
when used as verbs. Replace also variations of those.
* Improve language in a few places.
Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
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use resolvconf package from c/common/libnetwork
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Podman and Buildah should use the same code the generate the resolv.conf
file. This mostly moved the podman code into c/common and created a
better API for it so buildah can use it as well.
[NO NEW TESTS NEEDED] All existing tests should continue to pass.
Fixes #13599 (There is no way to test this in CI without breaking the
hosts resolv.conf)
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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When a container with a userns is created the network setup is special.
Normally the netns is setup before the oci runtime container is created,
however with a userns the container is created first and then the network
is setup. In the second case we never saved the container state
afterwards. Because of it, podman inspect would not show the network info
and network teardown will not happen.
This worked with local podman because there was a save() call later in the
code path which then also saved the network status. But in the podman API
code path this save never happened thus all containers started via API had
this problem.
Fixes #14465
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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Add the notion of an "exit policy" to a pod. This policy controls the
behaviour when the last container of pod exits. Initially, there are
two policies:
- "continue" : the pod continues running. This is the default policy
when creating a pod.
- "stop" : stop the pod when the last container exits. This is the
default behaviour for `play kube`.
In order to implement the deferred stop of a pod, add a worker queue to
the libpod runtime. The queue will pick up work items and in this case
helps resolve dead locks that would otherwise occur if we attempted to
stop a pod during container cleanup.
Note that the default restart policy of `play kube` is "Always". Hence,
in order to really solve #13464, the YAML files must set a custom
restart policy; the tests use "OnFailure".
Fixes: #13464
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
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replace golint with revive linter
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golint, scopelint and interfacer are deprecated. golint is replaced by
revive. This linter is better because it will also check for our error
style: `error strings should not be capitalized or end with punctuation or a newline`
scopelint is replaced by exportloopref (already endabled)
interfacer has no replacement but I do not think this linter is
important.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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Use the new logic from c/common to create the hosts file. This will help
to better allign the hosts files between buildah and podman.
Also this fixes several bugs:
- remove host entries when container is stopped and has a netNsCtr
- add entries for containers in a pod
- do not duplicate entries in the hosts file
- use the correct slirp ip when an userns is used
Features:
- configure host.containers.internal entry in containers.conf
- configure base hosts file in containers.conf
Fixes #12003
Fixes #13224
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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This is an enhancement proposal for the checkpoint / restore feature of
Podman that enables container migration across multiple systems with
standard image distribution infrastructure.
A new option `--create-image <image>` has been added to the
`podman container checkpoint` command. This option tells Podman to
create a container image. This is a standard image with a single layer,
tar archive, that that contains all checkpoint files. This is similar to
the current approach with checkpoint `--export`/`--import`.
This image can be pushed to a container registry and pulled on a
different system. It can also be exported locally with `podman image
save` and inspected with `podman inspect`. Inspecting the image would
display additional information about the host and the versions of
Podman, criu, crun/runc, kernel, etc.
`podman container restore` has also been extended to support image
name or ID as input.
Suggested-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Radostin Stoyanov <radostin@redhat.com>
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Fixes: #13265
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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the infra Inherit function was not properly passing pod volume information to new containers
alter the inherit function and struct to use the new `ConfigToSpec` function used in clone
pick and choose the proper entities from a temp spec and validate them on the spegen side rather
than passing directly to a config
resolves #13548
Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
Signed-off-by: cdoern <cdoern@redhat.com>
Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
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WalkDir should be faster the Walk, since we often do
not need to stat files.
[NO NEW TESTS NEEDED] Existing tests should find errors.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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healthcheck: stop showing wrong status when `--no-healthcheck` is set
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Containers started with `--no-healthcheck` are configured to contain no
healthcheck and test configured as `NONE`. Podman shows wrong status as
such use cases.
Following commit fixes the faulty behavior of stauts field for
containers started with `--no-healthcheck`
Signed-off-by: Aditya R <arajan@redhat.com>
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drop a warning for runc not supporting cgroup v2 on Fedora 31.
[NO NEW TESTS NEEDED]
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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podman container clone takes the id of an existing continer and creates a specgen from the given container's config
recreating all proper namespaces and overriding spec options like resource limits and the container name if given in the cli options
this command utilizes the common function DefineCreateFlags meaning that we can funnel as many create options as we want
into clone over time allowing the user to clone with as much or as little of the original config as they want.
container clone takes a second argument which is a new name and a third argument which is an image name to use instead of the original container's
the current supported flags are:
--destroy (remove the original container)
--name (new ctr name)
--cpus (sets cpu period and quota)
--cpuset-cpus
--cpu-period
--cpu-rt-period
--cpu-rt-runtime
--cpu-shares
--cpuset-mems
--memory
--run
resolves #10875
Signed-off-by: cdoern <cdoern@redhat.com>
Signed-off-by: cdoern <cbdoer23@g.holycross.edu>
Signed-off-by: cdoern <cdoern@redhat.com>
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Automated for .go files via gomove [1]:
`gomove github.com/containers/podman/v3 github.com/containers/podman/v4`
Remaining files via vgrep [2]:
`vgrep github.com/containers/podman/v3`
[1] https://github.com/KSubedi/gomove
[2] https://github.com/vrothberg/vgrep
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Set volume NeedsCopyUp to false iff data was copied up
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Currently Docker copies up the first volume on a mountpoint with
data.
Fixes: https://github.com/containers/podman/issues/12714
Also added NeedsCopyUP, NeedsChown and MountCount to the podman volume
inspect code.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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[NO NEW TESTS NEEDED] see #11991
Signed-off-by: Riyad Preukschas <riyad@informatik.uni-bremen.de>
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Fix handling of "bind" and "tmpfs" olumes to actually work.
Allow bind, tmpfs local volumes to work in rootless mode.
Also removed the string "error" from all error messages that begine with it.
All Podman commands are printed with Error:, so this causes an ugly
stutter.
Fixes: https://github.com/containers/podman/issues/12013
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Add more checkpoint/restore information to 'inspect'
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This adds the following information to the output of 'podman inspect':
* CheckpointedAt - time the container was checkpointed
Only set if the container has been checkpointed
* RestoredAt - time the container was restored
Only set if the container has been restored
* CheckpointLog - path to the checkpoint log file (CRIU's dump.log)
Only set if the log file exists (--keep)
* RestoreLog - path to the restore log file (CRIU's restore.log)
Only set if the log file exists (--keep)
* CheckpointPath - path to the actual (CRIU) checkpoint files
Only set if the checkpoint files exists (--keep)
* Restored - set to true if the container has been restored
Only set if the container has been restored
Signed-off-by: Adrian Reber <areber@redhat.com>
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when a container with healthchecks exits due to stopping or failure, we
need the cleanup process to remove both the timer file and the service
file.
Bz#:2024229
Signed-off-by: Brent Baude <bbaude@redhat.com>
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It is important that we store the current networks from the db in the
config. Also make sure to properly handle aliases and ignore static ip/mac
addresses.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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[NO NEW TESTS NEEDED] This is just moving pkg/cgroups out so
existing tests should be fine.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Some field names are confusing. Change them so that they make more sense
to the reader.
Since these fields are only in the main branch we can safely rename them
without worrying about backwards compatibility.
Note we have to change the field names in netavark too.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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This adds the parameter '--print-stats' to 'podman container restore'.
With '--print-stats' Podman will measure how long Podman itself, the OCI
runtime and CRIU requires to restore a checkpoint and print out these
information. CRIU already creates process restore statistics which are
just read in addition to the added measurements. In contrast to just
printing out the ID of the restored container, Podman will now print
out JSON:
# podman container restore --latest --print-stats
{
"podman_restore_duration": 305871,
"container_statistics": [
{
"Id": "47b02e1d474b5d5fe917825e91ac653efa757c91e5a81a368d771a78f6b5ed20",
"runtime_restore_duration": 140614,
"criu_statistics": {
"forking_time": 5,
"restore_time": 67672,
"pages_restored": 14
}
}
]
}
The output contains 'podman_restore_duration' which contains the
number of microseconds Podman required to restore the checkpoint. The
output also includes 'runtime_restore_duration' which is the time
the runtime needed to restore that specific container. Each container
also includes 'criu_statistics' which displays the timing information
collected by CRIU.
Signed-off-by: Adrian Reber <areber@redhat.com>
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make sure the /etc/mtab symlink is created inside the rootfs when /etc
is a symlink.
Closes: https://github.com/containers/podman/issues/12189
[NO NEW TESTS NEEDED] there is already a test case
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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A rootless container created with a custom userns and forwarded ports
did not work. I refactored the network setup to make the setup logic
more clear.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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Address the TOCTOU when generating random names by having at most 10
attempts to assign a random name when creating a pod or container.
[NO TESTS NEEDED] since I do not know a way to force a conflict with
randomly generated names in a reasonable time frame.
Fixes: #11735
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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The OCICNI port format has one big problem: It does not support ranges.
So if a users forwards a range of 1k ports with podman run -p 1001-2000
we have to store each of the thousand ports individually as array element.
This bloats the db and makes the JSON encoding and decoding much slower.
In many places we already use a better port struct type which supports
ranges, e.g. `pkg/specgen` or the new network interface.
Because of this we have to do many runtime conversions between the two
port formats. If everything uses the new format we can skip the runtime
conversions.
This commit adds logic to replace all occurrences of the old format
with the new one. The database will automatically migrate the ports
to new format when the container config is read for the first time
after the update.
The `ParsePortMapping` function is `pkg/specgen/generate` has been
reworked to better work with the new format. The new logic is able
to deduplicate the given ports. This is necessary the ensure we
store them efficiently in the DB. The new code should also be more
performant than the old one.
To prove that the code is fast enough I added go benchmarks. Parsing
1 million ports took less than 0.5 seconds on my laptop.
Benchmark normalize PortMappings in specgen:
Please note that the 1 million ports are actually 20x 50k ranges
because we cannot have bigger ranges than 65535 ports.
```
$ go test -bench=. -benchmem ./pkg/specgen/generate/
goos: linux
goarch: amd64
pkg: github.com/containers/podman/v3/pkg/specgen/generate
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
BenchmarkParsePortMappingNoPorts-12 480821532 2.230 ns/op 0 B/op 0 allocs/op
BenchmarkParsePortMapping1-12 38972 30183 ns/op 131584 B/op 9 allocs/op
BenchmarkParsePortMapping100-12 18752 60688 ns/op 141088 B/op 315 allocs/op
BenchmarkParsePortMapping1k-12 3104 331719 ns/op 223840 B/op 3018 allocs/op
BenchmarkParsePortMapping10k-12 376 3122930 ns/op 1223650 B/op 30027 allocs/op
BenchmarkParsePortMapping1m-12 3 390869926 ns/op 124593840 B/op 4000624 allocs/op
BenchmarkParsePortMappingReverse100-12 18940 63414 ns/op 141088 B/op 315 allocs/op
BenchmarkParsePortMappingReverse1k-12 3015 362500 ns/op 223841 B/op 3018 allocs/op
BenchmarkParsePortMappingReverse10k-12 343 3318135 ns/op 1223650 B/op 30027 allocs/op
BenchmarkParsePortMappingReverse1m-12 3 403392469 ns/op 124593840 B/op 4000624 allocs/op
BenchmarkParsePortMappingRange1-12 37635 28756 ns/op 131584 B/op 9 allocs/op
BenchmarkParsePortMappingRange100-12 39604 28935 ns/op 131584 B/op 9 allocs/op
BenchmarkParsePortMappingRange1k-12 38384 29921 ns/op 131584 B/op 9 allocs/op
BenchmarkParsePortMappingRange10k-12 29479 40381 ns/op 131584 B/op 9 allocs/op
BenchmarkParsePortMappingRange1m-12 927 1279369 ns/op 143022 B/op 164 allocs/op
PASS
ok github.com/containers/podman/v3/pkg/specgen/generate 25.492s
```
Benchmark convert old port format to new one:
```
go test -bench=. -benchmem ./libpod/
goos: linux
goarch: amd64
pkg: github.com/containers/podman/v3/libpod
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
Benchmark_ocicniPortsToNetTypesPortsNoPorts-12 663526126 1.663 ns/op 0 B/op 0 allocs/op
Benchmark_ocicniPortsToNetTypesPorts1-12 7858082 141.9 ns/op 72 B/op 2 allocs/op
Benchmark_ocicniPortsToNetTypesPorts10-12 2065347 571.0 ns/op 536 B/op 4 allocs/op
Benchmark_ocicniPortsToNetTypesPorts100-12 138478 8641 ns/op 4216 B/op 4 allocs/op
Benchmark_ocicniPortsToNetTypesPorts1k-12 9414 120964 ns/op 41080 B/op 4 allocs/op
Benchmark_ocicniPortsToNetTypesPorts10k-12 781 1490526 ns/op 401528 B/op 4 allocs/op
Benchmark_ocicniPortsToNetTypesPorts1m-12 4 250579010 ns/op 40001656 B/op 4 allocs/op
PASS
ok github.com/containers/podman/v3/libpod 11.727s
```
Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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remove need to download pause image
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Make sure to create the mounts for containers with an overlay root FS in
the runtime dir (e.g., /run/user/1000/...) to guarantee that we can
actually overlay mount on the specific path which is not the case for
the graph root.
[NO NEW TESTS NEEDED] since it is not a user-facing change.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Trying to restore a container that was started with '--ipc host' fails
with:
Error: error creating container storage: ProcessLabel and Mountlabel must either not be specified or both specified
We already fixed this exact same error message for containers started
with '--privileged'. The previous fix was to check if the to be restored
container is a privileged container (c.config.Privileged). Unfortunately
this does not work for containers started with '--ipc host'.
This commit changes the check for a privileged container to check if
both the ProcessLabel and the MountLabel is actually set and only then
re-uses those labels.
Signed-off-by: Adrian Reber <areber@redhat.com>
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Allow API to specify size and inode quota
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Fixes: https://github.com/containers/podman/issues/11016
[NO NEW TESTS NEEDED] We have no easy way to tests this in
CI/CD systems. Requires quota to be setup on directories to work.
Fixes: https://github.com/containers/podman/issues/11016
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Pod Rm Infra Handling Improvements
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