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Fix cpuset issue with cpuset.cpu_exclusive#1194

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mrunalp merged 1 commit intoopencontainers:masterfrom
hqhq:fix_cpu_exclusive
Nov 29, 2016
Merged

Fix cpuset issue with cpuset.cpu_exclusive#1194
mrunalp merged 1 commit intoopencontainers:masterfrom
hqhq:fix_cpu_exclusive

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@hqhq
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@hqhq hqhq commented Nov 18, 2016

This PR fix issue in this scenario:

in terminal 1:
~# cd /sys/fs/cgroup/cpuset
~# mkdir test
~# cd test
~# cat cpuset.cpus
0-3
~# echo 1 > cpuset.cpu_exclusive (make sure you don't have other cgroups under root)

in terminal 2:
~# echo $$ > /sys/fs/cgroup/cpuset/test/tasks
// set resources.cpu.cpus="0-2" in config.json
~# runc run test1

back to terminal 1:
~# cd test1
~# cat cpuset.cpus
0-2
~# echo 1 > cpuset.cpu_exclusive

in terminal 3:
~# echo $$ > /sys/fs/cgroup/test/tasks
// set resources.cpu.cpus="3" in config.json
~# runc run test2
container_linux.go:247: starting container process caused "process_linux.go:258:
applying cgroup configuration for process caused \"failed to write 0-3\\n to
cpuset.cpus: write /sys/fs/cgroup/cpuset/test2/cpuset.cpus: invalid argument\""

Signed-off-by: Qiang Huang h.huangqiang@huawei.com

This PR fix issue in this scenario:

```
in terminal 1:
~# cd /sys/fs/cgroup/cpuset
~# mkdir test
~# cd test
~# cat cpuset.cpus
0-3
~# echo 1 > cpuset.cpu_exclusive (make sure you don't have other cgroups under root)

in terminal 2:
~# echo $$ > /sys/fs/cgroup/cpuset/test/tasks
// set resources.cpu.cpus="0-2" in config.json
~# runc run test1

back to terminal 1:
~# cd test1
~# cat cpuset.cpus
0-2
~# echo 1 > cpuset.cpu_exclusive

in terminal 3:
~# echo $$ > /sys/fs/cgroup/test/tasks
// set resources.cpu.cpus="3" in config.json
~# runc run test2
container_linux.go:247: starting container process caused "process_linux.go:258:
applying cgroup configuration for process caused \"failed to write 0-3\\n to
cpuset.cpus: write /sys/fs/cgroup/cpuset/test2/cpuset.cpus: invalid argument\""
```

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
@hqhq hqhq force-pushed the fix_cpu_exclusive branch from 3d3fae1 to aee4686 Compare November 18, 2016 08:41
@crosbymichael
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crosbymichael commented Nov 28, 2016

LGTM

Approved with PullApprove

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@mrunalp
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mrunalp commented Nov 29, 2016

LGTM

Approved with PullApprove

@mrunalp mrunalp merged commit 4c013a1 into opencontainers:master Nov 29, 2016
@hqhq hqhq deleted the fix_cpu_exclusive branch November 30, 2016 01:23
hqhq added a commit to hqhq/runc that referenced this pull request Jan 17, 2017
Fixes: moby/moby#80
Upstream: opencontainers#1194

This PR fix issue in this scenario:

```
in terminal 1:
~# cd /sys/fs/cgroup/cpuset
~# mkdir test
~# cd test
~# cat cpuset.cpus
0-3
~# echo 1 > cpuset.cpu_exclusive (make sure you don't have other cgroups under root)

in terminal 2:
~# echo $$ > /sys/fs/cgroup/cpuset/test/tasks
// set resources.cpu.cpus="0-2" in config.json
~# runc run test1

back to terminal 1:
~# cd test1
~# cat cpuset.cpus
0-2
~# echo 1 > cpuset.cpu_exclusive

in terminal 3:
~# echo $$ > /sys/fs/cgroup/test/tasks
// set resources.cpu.cpus="3" in config.json
~# runc run test2
container_linux.go:247: starting container process caused "process_linux.go:258:
applying cgroup configuration for process caused \"failed to write 0-3\\n to
cpuset.cpus: write /sys/fs/cgroup/cpuset/test2/cpuset.cpus: invalid argument\""
```

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
hqhq added a commit to hqhq/runc that referenced this pull request Jan 17, 2017
Fix cpuset issue with cpuset.cpu_exclusive

Fixes: moby/moby#80
Upstream: opencontainers#1194

This PR fix issue in this scenario:

```
in terminal 1:
~# cd /sys/fs/cgroup/cpuset
~# mkdir test
~# cd test
~# cat cpuset.cpus
0-3
~# echo 1 > cpuset.cpu_exclusive (make sure you don't have other cgroups under root)

in terminal 2:
~# echo $$ > /sys/fs/cgroup/cpuset/test/tasks
// set resources.cpu.cpus="0-2" in config.json
~# runc run test1

back to terminal 1:
~# cd test1
~# cat cpuset.cpus
0-2
~# echo 1 > cpuset.cpu_exclusive

in terminal 3:
~# echo $$ > /sys/fs/cgroup/test/tasks
// set resources.cpu.cpus="3" in config.json
~# runc run test2
container_linux.go:247: starting container process caused "process_linux.go:258:
applying cgroup configuration for process caused \"failed to write 0-3\\n to
cpuset.cpus: write /sys/fs/cgroup/cpuset/test2/cpuset.cpus: invalid argument\""
```

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>


See merge request docker/runc!18
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3 participants