Den mån 26 nov. 2018 kl 10:10 skrev Felix Stolte <f.stolte@xxxxxxxxxxxxx>: > > Hi folks, > > i upgraded our ceph cluster from jewel to luminous and want to migrate > from filestore to bluestore. Currently we use one SSD as journal for > thre 8TB Sata Drives with a journal partition size of 40GB. If my > understanding of the bluestore documentation is correct, i can use a wal > partition for the writeahead log (to decrease write latency, similar to > filestore) and a db partition for metadata (decreasing write AND read > latency/throughput). Now I have two questions: > > a) Do I really need an WAL partition if both wal and db are on the same SSD? I think the answer is no here, if you point the DB to an SSD, bluestore will use it for WAL also. > b) If so, what would the ratio look like? 99% db, 1% wal? ..which means just let ceph handle this itself. -- May the most significant bit of your life be positive. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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