This really should be done in mdadm, not mdmon.
We ensure the device won't be suddenly commited as a hot-spare
using O_EXCL, then check the 'holders' sysfs directory
to make sure it is only in use once.
From: Dan Williams <dan.j.williams@intel.com>
Each md_message encapsulates a single command. A command includes an 'action'
member which describes what if any data comes after the action. Communication
with the monitor involves updating the active_cmd pointer and then writing to
mgr_pipe. Pass/fail status is returned via mon_pipe.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
From: Dan Williams <dan.j.williams@intel.com>
1/ Block attempts to add/remove devices from container members
2/ Forward add/remove requests to containers
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Neil Brown
Dan Williams