NewDreamNetwork/ceph — comment on commit f8b98c33c663e52e0d7de9e4112a83da32278110
File: src/osd/ReplicatedPG.cc line 2237
By athanatos:

The config options need clearer names. !osd_use_tmap means that the osd must ignore old tmap values. osd_auto_upgrade_tmap causes the osd to upgrade old tmaps. The osd will always use omap for new objects. This should only be observable by users using read rather than TMAPGET to get the contents of an omap.