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1dd4edded2
We used to run chroot in multus main process when calling other CNI plugin binary. We also use a mutex to lock the access to pod files. But this causes performance issues when facing heavy CNI_ADD/CNI_DEL requests. With this patch, we do chroot in the child processes instead. So file operations in the main process will not be affected by chroot. This change requires the multus thick plugin pod to mount CNI bin directory to the same path in the container host. Signed-off-by: Peng Liu <pliu@redhat.com>