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- What: /sys/class/fc/fc_udev_device/appid_store
- Date: Aug 2021
- Contact: Muneendra Kumar <[email protected]>
- 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>:"
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