2011-09-19 12:24 PM
Does anyone know what the WAFL_EXEMPT processes actually do? Are these background processes that the Filer uses to perform the standard I/O requests to/from the disk subsystems? Or, do these processes have some other special purpose? Not finding much information on the Filer's background processes.
2011-09-19 10:03 PM
multi-processor safe wafl_exempt threads can run in parallel on multiple processors. These threads handle WAFL tasks such as writes, reads, readdir. AFAIK, the purpose is to increase WAFL performance.
2011-09-22 07:47 AM
I would still like to know exactly what this process and a few other actually do. Does anyone know if NetApp has a paper that explains what their background processes do? I also see messages that the disk_admin process is a "long running process". Is this something to be concerned about?
mgr.stack.longrun.proc:notice]: Long running process: disk_admin