mirror of
https://github.com/opencontainers/runc.git
synced 2025-09-26 19:41:35 +08:00
830c479ae2
When a non–page-aligned value is written to memory.max, the kernel aligns it down to the nearest page boundary. On systems with a page size greater than 4K (e.g., 64K), this caused failures because the configured memory.max value was not 64K aligned. This patch fixes the issue by explicitly aligning the memory.max value to 64K. Since 64K is also a multiple of 4K, the value is correctly aligned on both 4K and 64K page size systems. However, this approach will still fail on systems where the hardcoded memory.max value is not aligned to the system page size. Fixes: https://github.com/opencontainers/runc/issues/4841 Signed-off-by: Vishal Chourasia <vishalc@linux.ibm.com> Signed-off-by: Donet Tom <donettom@linux.ibm.com>
553 lines
15 KiB
Bash
553 lines
15 KiB
Bash
#!/usr/bin/env bats
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load helpers
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function teardown() {
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teardown_bundle
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teardown_loopdevs
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}
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function setup() {
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setup_busybox
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}
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@test "runc create (no limits + no cgrouppath + no permission) succeeds" {
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_permissions
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[ "$status" -eq 0 ]
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}
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@test "runc create (rootless + no limits + cgrouppath + no permission) fails with permission error" {
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requires rootless rootless_no_cgroup
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set_cgroups_path
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_permissions
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[ "$status" -eq 1 ]
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[[ "$output" == *"unable to apply cgroup configuration"*"permission denied"* ]]
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}
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@test "runc create (rootless + limits + no cgrouppath + no permission) fails with informative error" {
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requires rootless rootless_no_cgroup
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set_resources_limit
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_permissions
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[ "$status" -eq 1 ]
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[[ "$output" == *"rootless needs no limits + no cgrouppath when no permission is granted for cgroups"* ]] ||
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[[ "$output" == *"cannot set pids limit: container could not join or create cgroup"* ]]
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}
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@test "runc create (limits + cgrouppath + permission on the cgroup dir) succeeds" {
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[ $EUID -ne 0 ] && requires rootless_cgroup
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set_cgroups_path
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set_resources_limit
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_permissions
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[ "$status" -eq 0 ]
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if [ -v CGROUP_V2 ]; then
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if [ -v RUNC_USE_SYSTEMD ]; then
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if [ $EUID -eq 0 ]; then
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check_cgroup_value "cgroup.controllers" "$(cat /sys/fs/cgroup/machine.slice/cgroup.controllers)"
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else
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# Filter out controllers that systemd is unable to delegate.
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check_cgroup_value "cgroup.controllers" "$(sed 's/ \(dmem\|hugetlb\|misc\|rdma\)//g' </sys/fs/cgroup/user.slice/user-${EUID}.slice/cgroup.controllers)"
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fi
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else
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check_cgroup_value "cgroup.controllers" "$(cat /sys/fs/cgroup/cgroup.controllers)"
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fi
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fi
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}
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@test "runc exec (limits + cgrouppath + permission on the cgroup dir) succeeds" {
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[ $EUID -ne 0 ] && requires rootless_cgroup
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set_cgroups_path
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set_resources_limit
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_permissions
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[ "$status" -eq 0 ]
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runc exec test_cgroups_permissions echo "cgroups_exec"
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[ "$status" -eq 0 ]
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[[ ${lines[0]} == *"cgroups_exec"* ]]
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}
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@test "runc exec (cgroup v2 + init process in non-root cgroup) succeeds" {
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requires root cgroups_v2
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set_cgroups_path
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set_cgroup_mount_writable
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_group
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[ "$status" -eq 0 ]
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runc exec test_cgroups_group cat /sys/fs/cgroup/cgroup.controllers
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[ "$status" -eq 0 ]
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[[ ${lines[0]} == *"memory"* ]]
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runc exec test_cgroups_group cat /proc/self/cgroup
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[ "$status" -eq 0 ]
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[[ ${lines[0]} = "0::/" ]]
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runc exec test_cgroups_group mkdir /sys/fs/cgroup/foo
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[ "$status" -eq 0 ]
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runc exec test_cgroups_group sh -c "echo 1 > /sys/fs/cgroup/foo/cgroup.procs"
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[ "$status" -eq 0 ]
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# the init process is now in "/foo", but an exec process can still join "/"
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# because we haven't enabled any domain controller.
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runc exec test_cgroups_group cat /proc/self/cgroup
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[ "$status" -eq 0 ]
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[[ ${lines[0]} = "0::/" ]]
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# turn on a domain controller (memory)
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runc exec test_cgroups_group sh -euxc 'echo $$ > /sys/fs/cgroup/foo/cgroup.procs; echo +memory > /sys/fs/cgroup/cgroup.subtree_control'
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[ "$status" -eq 0 ]
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# an exec process can no longer join "/" after turning on a domain controller.
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# falls back to "/foo".
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runc exec test_cgroups_group cat /proc/self/cgroup
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[ "$status" -eq 0 ]
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[[ ${lines[0]} = "0::/foo" ]]
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# teardown: remove "/foo"
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# shellcheck disable=SC2016
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runc exec test_cgroups_group sh -uxc 'echo -memory > /sys/fs/cgroup/cgroup.subtree_control; for f in $(cat /sys/fs/cgroup/foo/cgroup.procs); do echo $f > /sys/fs/cgroup/cgroup.procs; done; rmdir /sys/fs/cgroup/foo'
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runc exec test_cgroups_group test ! -d /sys/fs/cgroup/foo
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[ "$status" -eq 0 ]
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#
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}
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@test "runc run (cgroup v1 + unified resources should fail)" {
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requires root cgroups_v1
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set_cgroups_path
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set_resources_limit
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update_config '.linux.resources.unified |= {"memory.min": "131072"}'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -ne 0 ]
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[[ "$output" == *'invalid configuration'* ]]
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}
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@test "runc run (blkio weight)" {
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requires cgroups_v2 cgroups_io_weight
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[ $EUID -ne 0 ] && requires rootless_cgroup
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set_cgroups_path
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update_config '.linux.resources.blockIO |= {"weight": 750}'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -eq 0 ]
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runc exec test_cgroups_unified sh -c 'cat /sys/fs/cgroup/io.bfq.weight'
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if [[ "$status" -eq 0 ]]; then
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[ "$output" = 'default 750' ]
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else
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runc exec test_cgroups_unified sh -c 'cat /sys/fs/cgroup/io.weight'
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[ "$output" = 'default 7475' ]
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fi
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}
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@test "runc run (per-device io weight for bfq)" {
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requires root # to create a loop device
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dev="$(setup_loopdev)"
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# Some distributions (like openSUSE) have udev configured to forcefully
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# reset the scheduler for loopN devices to be "none", which breaks this
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# test. We cannot modify the udev behaviour of the host, but since this is
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# usually triggered by the "change" event from losetup, we can wait for a
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# little bit before continuing the test. For more details, see
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# <https://github.com/opencontainers/runc/issues/4781>.
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sleep 2s
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# See if BFQ scheduler is available.
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if ! { grep -qw bfq "/sys/block/${dev#/dev/}/queue/scheduler" &&
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echo bfq >"/sys/block/${dev#/dev/}/queue/scheduler"; }; then
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skip "BFQ scheduler not available"
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fi
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# Check that the device still has the right scheduler, in case we lost the
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# race above...
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if ! grep -qw '\[bfq\]' "/sys/block/${dev#/dev/}/queue/scheduler"; then
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skip "udev is configured to reset loop device io scheduler"
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fi
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set_cgroups_path
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IFS=$' \t:' read -r major minor <<<"$(lsblk -nd -o MAJ:MIN "$dev")"
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update_config ' .linux.devices += [{path: "'"$dev"'", type: "b", major: '"$major"', minor: '"$minor"'}]
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| .linux.resources.blockIO.weight |= 333
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| .linux.resources.blockIO.weightDevice |= [
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{ major: '"$major"', minor: '"$minor"', weight: 444 }
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]'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_dev_weight
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[ "$status" -eq 0 ]
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if [ -v CGROUP_V2 ]; then
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file="io.bfq.weight"
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else
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file="blkio.bfq.weight_device"
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fi
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weights1=$(get_cgroup_value $file)
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# Check that runc update works.
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runc update -r - test_dev_weight <<EOF
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{
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"blockIO": {
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"weight": 111,
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"weightDevice": [
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{
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"major": $major,
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"minor": $minor,
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"weight": 222
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}
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]
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}
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}
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EOF
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weights2=$(get_cgroup_value $file)
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# Check original values.
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grep '^default 333$' <<<"$weights1"
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grep "^$major:$minor 444$" <<<"$weights1"
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# Check updated values.
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grep '^default 111$' <<<"$weights2"
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grep "^$major:$minor 222$" <<<"$weights2"
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}
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@test "runc run (per-device multiple iops via unified)" {
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requires root cgroups_v2
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dev1="$(setup_loopdev)"
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dev2="$(setup_loopdev)"
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set_cgroups_path
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IFS=$' \t:' read -r major1 minor1 <<<"$(lsblk -nd -o MAJ:MIN "$dev1")"
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IFS=$' \t:' read -r major2 minor2 <<<"$(lsblk -nd -o MAJ:MIN "$dev2")"
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update_config ' .linux.devices += [
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{path: "'"$dev1"'", type: "b", major: '"$major1"', minor: '"$minor1"'},
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{path: "'"$dev2"'", type: "b", major: '"$major2"', minor: '"$minor2"'}
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]
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| .linux.resources.unified |=
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{"io.max": "'"$major1"':'"$minor1"' riops=333 wiops=444\n'"$major2"':'"$minor2"' riops=555 wiops=666\n"}'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_dev_weight
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[ "$status" -eq 0 ]
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weights=$(get_cgroup_value "io.max")
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grep "^$major1:$minor1 .* riops=333 wiops=444$" <<<"$weights"
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grep "^$major2:$minor2 .* riops=555 wiops=666$" <<<"$weights"
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}
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@test "runc run (cpu.idle)" {
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requires cgroups_cpu_idle
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[ $EUID -ne 0 ] && requires rootless_cgroup
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set_cgroups_path
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update_config '.linux.resources.cpu.idle = 1'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -eq 0 ]
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check_cgroup_value "cpu.idle" "1"
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}
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# Convert size in KB to hugetlb size suffix.
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convert_hugetlb_size() {
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local size=$1
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local units=("KB" "MB" "GB")
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local idx=0
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while ((size >= 1024)); do
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((size /= 1024))
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((idx++))
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done
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echo "$size${units[$idx]}"
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}
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@test "runc run (hugetlb limits)" {
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requires cgroups_hugetlb
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[ $EUID -ne 0 ] && requires rootless_cgroup
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# shellcheck disable=SC2012 # ls is fine here.
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mapfile -t sizes_kb < <(ls /sys/kernel/mm/hugepages/ | sed -e 's/.*hugepages-//' -e 's/kB$//') #
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if [ "${#sizes_kb[@]}" -lt 1 ]; then
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skip "requires hugetlb"
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fi
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# Create two arrays:
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# - sizes: hugetlb cgroup file suffixes;
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# - limits: limits for each size.
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for size in "${sizes_kb[@]}"; do
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sizes+=("$(convert_hugetlb_size "$size")")
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# Limit to 1 page.
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limits+=("$((size * 1024))")
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done
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# Set per-size limits.
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for ((i = 0; i < ${#sizes[@]}; i++)); do
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size="${sizes[$i]}"
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limit="${limits[$i]}"
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update_config '.linux.resources.hugepageLimits += [{ pagesize: "'"$size"'", limit: '"$limit"' }]'
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done
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set_cgroups_path
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runc run -d --console-socket "$CONSOLE_SOCKET" test_hugetlb
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[ "$status" -eq 0 ]
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lim="max"
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[ -v CGROUP_V1 ] && lim="limit_in_bytes"
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optional=("")
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# Add rsvd, if available.
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if test -f "$(get_cgroup_path hugetlb)/hugetlb.${sizes[0]}.rsvd.$lim"; then
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optional+=(".rsvd")
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fi
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# Check if the limits are as expected.
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for ((i = 0; i < ${#sizes[@]}; i++)); do
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size="${sizes[$i]}"
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limit="${limits[$i]}"
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for rsvd in "${optional[@]}"; do
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param="hugetlb.${size}${rsvd}.$lim"
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echo "checking $param"
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check_cgroup_value "$param" "$limit"
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done
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done
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}
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@test "runc run (cgroup v2 resources.unified only)" {
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requires root cgroups_v2
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set_cgroups_path
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update_config ' .linux.resources.unified |= {
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"memory.min": "131072",
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"memory.low": "524288",
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"memory.high": "5242880",
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"memory.max": "10485760",
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"pids.max": "99",
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"cpu.max": "10000 100000",
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"cpu.weight": "42"
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}'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -eq 0 ]
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runc exec test_cgroups_unified sh -c 'cd /sys/fs/cgroup && grep . *.min *.max *.low *.high'
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[ "$status" -eq 0 ]
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echo "$output"
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echo "$output" | grep -q '^memory.min:131072$'
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echo "$output" | grep -q '^memory.low:524288$'
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echo "$output" | grep -q '^memory.high:5242880$'
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echo "$output" | grep -q '^memory.max:10485760$'
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echo "$output" | grep -q '^pids.max:99$'
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echo "$output" | grep -q '^cpu.max:10000 100000$'
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check_systemd_value "MemoryMin" 131072
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check_systemd_value "MemoryLow" 524288
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check_systemd_value "MemoryHigh" 5242880
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check_systemd_value "MemoryMax" 10485760
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check_systemd_value "TasksMax" 99
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check_cpu_quota 10000 100000
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check_cpu_weight 42
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}
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@test "runc run (cgroup v2 resources.unified swap)" {
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requires root cgroups_v2 cgroups_swap
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set_cgroups_path
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update_config ' .linux.resources.unified |= {
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"memory.max": "20512768",
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"memory.swap.max": "20971520"
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}'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -eq 0 ]
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runc exec test_cgroups_unified sh -c 'cd /sys/fs/cgroup && grep . *.max'
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[ "$status" -eq 0 ]
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echo "$output"
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echo "$output" | grep -q '^memory.max:20512768$'
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echo "$output" | grep -q '^memory.swap.max:20971520$'
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check_systemd_value "MemoryMax" 20512768
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check_systemd_value "MemorySwapMax" 20971520
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}
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@test "runc run (cgroup v2 resources.unified override)" {
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requires root cgroups_v2
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set_cgroups_path
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# CPU shares of 3333 corresponds to CPU weight of 128.
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update_config ' .linux.resources.memory |= {"limit": 33554432}
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| .linux.resources.cpu |= {
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"shares": 3333,
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"quota": 40000,
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"period": 100000
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}
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| .linux.resources.unified |= {
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"memory.min": "131072",
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"memory.max": "10485760",
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"pids.max": "42",
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"cpu.max": "5000 50000",
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"cpu.weight": "42"
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}'
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -eq 0 ]
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runc exec test_cgroups_unified cat /sys/fs/cgroup/memory.min
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[ "$status" -eq 0 ]
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[ "$output" = '131072' ]
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runc exec test_cgroups_unified cat /sys/fs/cgroup/memory.max
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[ "$status" -eq 0 ]
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[ "$output" = '10485760' ]
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runc exec test_cgroups_unified cat /sys/fs/cgroup/pids.max
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[ "$status" -eq 0 ]
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[ "$output" = '42' ]
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check_systemd_value "TasksMax" 42
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check_cpu_quota 5000 50000
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check_cpu_weight 42
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}
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@test "runc run (cgroupv2 mount inside container)" {
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requires cgroups_v2
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[ $EUID -ne 0 ] && requires rootless_cgroup
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set_cgroups_path
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runc run -d --console-socket "$CONSOLE_SOCKET" test_cgroups_unified
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[ "$status" -eq 0 ]
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# Make sure we don't have any extra cgroups inside
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runc exec test_cgroups_unified find /sys/fs/cgroup/ -type d
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[ "$status" -eq 0 ]
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[ "$(wc -l <<<"$output")" -eq 1 ]
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}
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@test "runc exec (cgroup v1+hybrid joins correct cgroup)" {
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requires root cgroups_hybrid
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set_cgroups_path
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runc run --pid-file pid.txt -d --console-socket "$CONSOLE_SOCKET" test_cgroups_group
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[ "$status" -eq 0 ]
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pid=$(cat pid.txt)
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run_cgroup=$(tail -1 </proc/"$pid"/cgroup)
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[[ "$run_cgroup" == *"runc-cgroups-integration-test"* ]]
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runc exec test_cgroups_group cat /proc/self/cgroup
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[ "$status" -eq 0 ]
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exec_cgroup=${lines[-1]}
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[[ $exec_cgroup == *"runc-cgroups-integration-test"* ]]
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# check that the cgroups v2 path is the same for both processes
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[ "$run_cgroup" = "$exec_cgroup" ]
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}
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@test "runc exec should refuse a paused container" {
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requires cgroups_freezer
|
|
[ $EUID -ne 0 ] && requires rootless_cgroup
|
|
|
|
set_cgroups_path
|
|
|
|
runc run -d --console-socket "$CONSOLE_SOCKET" ct1
|
|
[ "$status" -eq 0 ]
|
|
runc pause ct1
|
|
[ "$status" -eq 0 ]
|
|
|
|
# Exec should not timeout or succeed.
|
|
runc exec ct1 echo ok
|
|
[ "$status" -eq 255 ]
|
|
[[ "$output" == *"cannot exec in a paused container"* ]]
|
|
}
|
|
|
|
@test "runc exec --ignore-paused" {
|
|
requires cgroups_freezer
|
|
[ $EUID -ne 0 ] && requires rootless_cgroup
|
|
|
|
set_cgroups_path
|
|
|
|
runc run -d --console-socket "$CONSOLE_SOCKET" ct1
|
|
[ "$status" -eq 0 ]
|
|
runc pause ct1
|
|
[ "$status" -eq 0 ]
|
|
|
|
# Resume the container a bit later.
|
|
(
|
|
sleep 2
|
|
runc resume ct1
|
|
) &
|
|
|
|
# Exec should not timeout or succeed.
|
|
runc exec --ignore-paused ct1 echo ok
|
|
[ "$status" -eq 0 ]
|
|
[ "$output" = "ok" ]
|
|
}
|
|
|
|
@test "runc run/create should error for a non-empty cgroup" {
|
|
[ $EUID -ne 0 ] && requires rootless_cgroup
|
|
|
|
set_cgroups_path
|
|
|
|
runc run -d --console-socket "$CONSOLE_SOCKET" ct1
|
|
[ "$status" -eq 0 ]
|
|
|
|
# Run a second container sharing the cgroup with the first one.
|
|
runc --debug run -d --console-socket "$CONSOLE_SOCKET" ct2
|
|
[ "$status" -ne 0 ]
|
|
[[ "$output" == *"container's cgroup is not empty"* ]]
|
|
|
|
# Same but using runc create.
|
|
runc create --console-socket "$CONSOLE_SOCKET" ct3
|
|
[ "$status" -ne 0 ]
|
|
[[ "$output" == *"container's cgroup is not empty"* ]]
|
|
}
|
|
|
|
@test "runc run/create should refuse pre-existing frozen cgroup" {
|
|
requires cgroups_freezer
|
|
[ $EUID -ne 0 ] && requires rootless_cgroup
|
|
|
|
set_cgroups_path
|
|
|
|
if [ -v CGROUP_V1 ]; then
|
|
FREEZER_DIR="${CGROUP_FREEZER_BASE_PATH}/${REL_CGROUPS_PATH}"
|
|
FREEZER="${FREEZER_DIR}/freezer.state"
|
|
STATE="FROZEN"
|
|
else
|
|
FREEZER_DIR="${CGROUP_V2_PATH}"
|
|
FREEZER="${FREEZER_DIR}/cgroup.freeze"
|
|
STATE="1"
|
|
fi
|
|
|
|
# Create and freeze the cgroup.
|
|
mkdir -p "$FREEZER_DIR"
|
|
echo "$STATE" >"$FREEZER"
|
|
|
|
# Start a container.
|
|
runc run -d --console-socket "$CONSOLE_SOCKET" ct1
|
|
[ "$status" -eq 1 ]
|
|
# A warning should be printed.
|
|
[[ "$output" == *"container's cgroup unexpectedly frozen"* ]]
|
|
|
|
# Same check for runc create.
|
|
runc create --console-socket "$CONSOLE_SOCKET" ct2
|
|
[ "$status" -eq 1 ]
|
|
# A warning should be printed.
|
|
[[ "$output" == *"container's cgroup unexpectedly frozen"* ]]
|
|
|
|
# Cleanup.
|
|
rmdir "$FREEZER_DIR"
|
|
}
|