| What: /sys/class/fc/fc_udev_device/appid_store |
| Date: Aug 2021 |
| Contact: Muneendra Kumar <muneendra.kumar@broadconm.com> |
| Description: |
| This interface allows an admin to set an FC application |
| identifier in the blkcg associated with a cgroup id. The |
| identifier is typically a UUID that is associated with |
| an application or logical entity such as a virtual |
| machine or container group. The application or logical |
| entity utilizes a block device via the cgroup id. |
| FC adapter drivers may query the identifier and tag FC |
| traffic based on the identifier. FC host and FC fabric |
| entities can utilize the application id and FC traffic |
| tag to identify traffic sources. |
| |
| The interface expects a string "<cgroupid>:<appid>" where: |
| <cgroupid> is inode of the cgroup in hexadecimal |
| <appid> is user provided string upto 128 characters |
| in length. |
| |
| If an appid_store is done for a cgroup id that already |
| has an appid set, the new value will override the |
| previous value. |
| |
| If an admin wants to remove an FC application identifier |
| from a cgroup, an appid_store should be done with the |
| following string: "<cgroupid>:" |
