After upgrading a number of OSD's to Bluestore I have noticed that the cache
tier OSD's which have so far been upgraded are no
longer logging tier_* stats
"tier_promote": 0,
"tier_flush": 0,
"tier_flush_fail": 0,
"tier_try_flush": 0,
"tier_try_flush_fail": 0,
"tier_evict": 0,
"tier_whiteout": 0,
"tier_dirty": 0,
"tier_clean": 0,
"tier_delay": 0,
"tier_proxy_read": 0,
"tier_proxy_write": 0,
"osd_tier_flush_lat": {
"osd_tier_promote_lat": {
"osd_tier_r_lat": {
Example from Filestore OSD (both are running 12.2.8)
"tier_promote": 265140,
"tier_flush": 0,
"tier_flush_fail": 0,
"tier_try_flush": 88942,
"tier_try_flush_fail": 0,
"tier_evict": 264773,
"tier_whiteout": 35,
"tier_dirty": 89314,
"tier_clean": 89207,
"tier_delay": 0,
"tier_proxy_read": 1446068,
"tier_proxy_write": 10957517,
"osd_tier_flush_lat": {
"osd_tier_promote_lat": {
"osd_tier_r_lat": {
"New Issue" button on tracker seems to cause a 500 error btw
Nick
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