1 What: /sys/class/fc/fc_udev_device/appid_store 2 Date: Aug 2021 3 Contact: Muneendra Kumar <muneendra.kumar@broadconm.com> 4 Description: 5 This interface allows an admin to set an FC application 6 identifier in the blkcg associated with a cgroup id. The 7 identifier is typically a UUID that is associated with 8 an application or logical entity such as a virtual 9 machine or container group. The application or logical 10 entity utilizes a block device via the cgroup id. 11 FC adapter drivers may query the identifier and tag FC 12 traffic based on the identifier. FC host and FC fabric 13 entities can utilize the application id and FC traffic 14 tag to identify traffic sources. 15 16 The interface expects a string "<cgroupid>:<appid>" where: 17 <cgroupid> is inode of the cgroup in hexadecimal 18 <appid> is user provided string upto 128 characters 19 in length. 20 21 If an appid_store is done for a cgroup id that already 22 has an appid set, the new value will override the 23 previous value. 24 25 If an admin wants to remove an FC application identifier 26 from a cgroup, an appid_store should be done with the 27 following string: "<cgroupid>:" 28