[1.1] cgroups: cpuset: fix byte order while parsing cpuset range to bits #3808
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kolyshkin
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CI failure in CS9 is being fixed by #3806 |
AkihiroSuda
approved these changes
Apr 4, 2023
Runc parses cpuset range to bits in the case of cgroup v2 + systemd as cgroup driver.
The byte order representation differs from systemd expectation, which will set
different cpuset range in systemd transient unit if the length of parsed byte array exceeds one.
# cat config.json
...
"resources": {
...
"cpu": {
"cpus": "10-23"
}
},
...
# runc --systemd-cgroup run test
# cat /run/systemd/transient/runc-test.scope.d/50-AllowedCPUs.conf
# This is a drop-in unit file extension, created via "systemctl set-property"
# or an equivalent operation. Do not edit.
[Scope]
AllowedCPUs=0-7 10-15
The cpuset.cpus in cgroup will also be set to wrong value after reloading systemd manager configuration.
# systemctl daemon-reload
# cat /sys/fs/cgroup/system.slice/runc-test.scope/cpuset.cpus
0-7,10-15
Signed-off-by: seyeongkim <seyeong.kim@canonical.com>
Signed-off-by: Chengen, Du <chengen.du@canonical.com>
(cherry picked from commit 77cae9a)
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Add a test case for an issue fixed by the previous commit. The env should has more than 8 core CPU to meet the test requirement. Signed-off-by: Chengen, Du <chengen.du@canonical.com> (cherry picked from commit 4a8750d) Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
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mrunalp
approved these changes
Apr 7, 2023
Merged
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Better late than never, this is a backport of #3611 to release-1.1 branch. See the original PR for details.