After adding support for ZVols to LX Brand Zones and doing the work to align the values of /proc/partitions, df, stat and iostats, I noticed that file /proc/devices was empty.
This ticket is a reminder to do the work to populate that file because inevitably there will be some application out there that will attempt to read from it.
Former user commented on 2016-03-22T13:10:15.000-0400:
illumos-joyent commit feb82da (branch master, by Jerry Jelinek)
OS-5258#icft=OS-5258 /proc/$pid/stat tty_nr is an untranslated illumos dev_t
OS-5246#icft=OS-5246 Add support for /proc/devices
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>