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-v container propagates cgroup mounts to other containers #95

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aalba6675 opened this issue May 14, 2018 · 0 comments
Open

-v container propagates cgroup mounts to other containers #95

aalba6675 opened this issue May 14, 2018 · 0 comments

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@aalba6675
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aalba6675 commented May 14, 2018 •
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All using podman.

  1. Start a container Alice that doesn't use -v
## Alice:
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9075fe81752a0a9383e587ba9af6de76d546cfec3f3d23683d1de165c69ed96f/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
  1. Start container Bobby using -v(notice the weird doubled path, and that these mounts are on the
    host and not the container):
## Host:
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
## Bobby:
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
  1. Go back to Alice:
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9075fe81752a0a9383e587ba9af6de76d546cfec3f3d23683d1de165c69ed96f/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)
cgroup on /sys/fs/cgroup/systemd/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr/libpod_parent/libpod-9ffaff1cdcab235dc1dabdb25d6d1e209f044957b02b533874e0aaf17c0200db/ctr type cgroup (rw,nosuid,nodev,noexec,relatime,seclabel,xattr,name=systemd)

Observe that Bobby's host mounts have propagated to Alice.
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