# userbat: 8x mmhold (open fd + pread loop) x 10 delete/re-insert cycles
== CYCLE 1 delete 18:01:xx
...
== CYCLE 10 delete 18:03:33
== CYCLE 10 readd
USERBAT done; guest up afterwards (uptime verified: "6:03PM up 3 mins, load average: 0.94")
# mmhold processes continued spinning on EBADF (10101 successful reads before teardown).