Hello everyone:
I'm using ceph-10.1.1, when I write data to rbd image, I found that there are many operations about omap.
Especially when I use small IO block size, e.g. 1K, to write 64MB data into rbd image, the data of omap put though rocksdb can be almost 64MB, that is a big write amplification.
So I'm wondering what does the omap do, is it possible to reduce the omap operations?
Thank you!
Best Regards!
Haitao Wang
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