Hi everyone:
I plan to use SSD Journal to improve performance.
I have one 1.2T SSD disk per server.
what is the best practice for SSD Journal ?
There are there choice to deploy SSD Journal
1. all osd used same ssd partion
ceph-deploy osd create ceph-node:sdb:/de
For the first choice:
ceph-deploy osd create ceph-node:sdb:/dev/ssd ceph-node:sdc:/dev/ssd
i find ceph-deploy will create partition automaticaly, and each partition is 5G
default.
So the first choice and second choice is almost the same.
Compare to filesystem, I perfer to block device to get
