El problema
Al iniciar lxc da el siguiente error:
lxc-start 1491315722.354 ERROR lxc_cgfs - Device or resource busy - failed to set memory.use_hierarchy to 1; continuing lxc-start 1491315722.354 ERROR lxc_cgfs - Device or resource busy - failed to set memory.use_hierarchy to 1; continuing lxc-start 1497957841.930 ERROR lxc_cgfs - Device or resource busy - failed to set memory.use_hierarchy to 1; continuing lxc-start 1497957841.937 ERROR lxc_cgfs - Device or resource busy - failed to set memory.use_hierarchy to 1; continuing
La solución
Teniendo en cuenta un escenario en el que obtenemos el error:dispositivo o recurso ocupado:no se pudo establecer memory.use_hierarchy en 1; continuando:
# lxc-start --name CentOS7 lxc-start: cgfs.c: handle_cgroup_settings: 2077 Device or resource busy - failed to set memory.use_hierarchy to 1; continuing systemd 208 running in system mode. (+PAM +LIBWRAP +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ) Detected virtualization 'lxc'. Welcome to CentOS Linux Server 7.1! Failed to insert module 'autofs4' Set hostname to [CentOS7]. [ OK ] Reached target Remote File Systems. [ OK ] Created slice Root Slice. [ OK ] Created slice User and Session Slice. [ OK ] Created slice System Slice. [ OK ] Reached target Slices. [ OK ] Created slice system-getty.slice.
El parámetro /cgroup/memory/memory.use_hierarchy se establece en 0 causando el problema. Use el siguiente comando para verificar el valor actual del parámetro.
# cat /proc/mounts | grep -i mem cgroup /cgroup/memory cgroup rw,relatime,memory 0 0 # ls /cgroup/memory/memory.use_hierarchy /cgroup/memory/memory.use_hierarchy # cat /cgroup/memory/memory.use_hierarchy 0
Si tratamos de establecer el valor en 1, sigue arrojando el mismo error:
# echo 1 > /cgroup/memory/memory.use_hierarchy -bash: echo: write error: Device or resource busy
Para deshacerse del error:Dispositivo o recurso ocupado:no se pudo establecer memory.use_hierarchy en 1; Para continuar, debemos seguir los siguientes pasos:
- Detener el contenedor
- Detener el servicio cgconfig
- Iniciar el servicio cgconfig
- Establezca el parámetro /cgroup/memory/memory.use_hierarchy en 1
- Iniciar el contenedor
# lxc-stop --name CentOS7
# /etc/init.d/cgconfig stop Stopping cgconfig service: [ OK ]
# cat /proc/mounts | grep -i mem #
# /etc/init.d/cgconfig start Starting cgconfig service: [ OK ]
# cat /cgroup/memory/memory.use_hierarchy 0 # echo 1 > /cgroup/memory/memory.use_hierarchy # cat /cgroup/memory/memory.use_hierarchy 1
# lxc-start --name CentOS7 systemd 208 running in system mode. (+PAM +LIBWRAP +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ) Detected virtualization 'lxc'. Welcome to CentOS Server 7.1! Failed to insert module 'autofs4' Set hostname to. [ OK ] Reached target Remote File Systems. [ OK ] Created slice Root Slice.