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cri: Fix TestUpdateOCILinuxResource for host w/o swap controller

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Tested on Ubuntu 20.04 w/o swap controller:
```
$ stat -fc %T /sys/fs/cgroup/
tmpfs
$ la -la /sys/fs/cgroup/memory/memory.memsw.limit_in_bytes
ls: cannot access '/sys/fs/cgroup/memory/memory.memsw.limit_in_bytes': No such file or directory
$  go test -v ./pkg/cri/sbserver/ -run TestUpdateOCILinuxResource
=== RUN   TestUpdateOCILinuxResource
=== RUN   TestUpdateOCILinuxResource/should_be_able_to_patch_the_unified_map
=== RUN   TestUpdateOCILinuxResource/should_be_able_to_update_each_resource
=== RUN   TestUpdateOCILinuxResource/should_skip_empty_fields
=== RUN   TestUpdateOCILinuxResource/should_be_able_to_fill_empty_fields
--- PASS: TestUpdateOCILinuxResource (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_be_able_to_patch_the_unified_map (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_be_able_to_update_each_resource (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_skip_empty_fields (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_be_able_to_fill_empty_fields (0.00s)
PASS
ok      github.com/containerd/containerd/pkg/cri/sbserver       (cached)
$ go test -v ./pkg/cri/server/ -run TestUpdateOCILinuxResource
=== RUN   TestUpdateOCILinuxResource
=== RUN   TestUpdateOCILinuxResource/should_be_able_to_update_each_resource
=== RUN   TestUpdateOCILinuxResource/should_skip_empty_fields
=== RUN   TestUpdateOCILinuxResource/should_be_able_to_fill_empty_fields
=== RUN   TestUpdateOCILinuxResource/should_be_able_to_patch_the_unified_map
--- PASS: TestUpdateOCILinuxResource (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_be_able_to_update_each_resource (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_skip_empty_fields (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_be_able_to_fill_empty_fields (0.00s)
    --- PASS: TestUpdateOCILinuxResource/should_be_able_to_patch_the_unified_map (0.00s)
PASS
ok      github.com/containerd/containerd/pkg/cri/server (cached)
```

Signed-off-by: Qasim Sarfraz <qasimsarfraz@microsoft.com>
This commit is contained in:
Qasim Sarfraz
2023-01-10 13:32:15 +01:00
parent 54ec1919f3
commit 9c8c4508ec
3 changed files with 25 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
pkg/cri/opts/spec_linux.go
View File

@@ -411,7 +411,8 @@ var (
swapControllerAvailabilityOnce sync.Once
)
func swapControllerAvailable() bool {
// SwapControllerAvailable returns true if the swap controller is available
func SwapControllerAvailable() bool {
swapControllerAvailabilityOnce.Do(func() {
const warn = "Failed to detect the availability of the swap controller, assuming not available"
p := "/sys/fs/cgroup/memory/memory.memsw.limit_in_bytes"
@@ -481,7 +482,7 @@ func WithResources(resources *runtime.LinuxContainerResources, tolerateMissingHu
if limit != 0 {
s.Linux.Resources.Memory.Limit = &limit
// swap/memory limit should be equal to prevent container from swapping by default
if swapLimit == 0 && swapControllerAvailable() {
if swapLimit == 0 && SwapControllerAvailable() {
s.Linux.Resources.Memory.Swap = &limit
}
}