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Hi all,
I am playing with setting for backfill to try to
find how to control the speed of backfill.
Now I only find "osd max backfills"
can have effect the backfill speed. But after all pg need to be backfilled
begin backfilling I can't find any way to speed up backfills.
Especailly when it comes to the last pg to
recover, the speed is only a few MB/s(when there are multi pg are backfilled the
speed could be more than 600MB/s in my test)
I am a little confused about the setting of
backfills and recovery.Though backfilling is a kind of recovery but It seems
recovery setting is only about to replay pg logs to do
recover pg.
Would change "osd recovery max active" or other
recovery setting have any effect on backfilling?
I did tried "osd recovery op priority" and "osd
recovery max active" with no luck.
Any advice would be greatly
appreciated.Thanks
2018-01-11
lin.yunfan |
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