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? b) If so, what would the ratio look like? 99% db, 1% wal? Best regards, Felix -- Forschungszentrum Jülich GmbH 52425 Jülich Sitz der Gesellschaft: Jülich Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498 Vorsitzender des Aufsichtsrats: MinDir. Dr. Karl Eugen Huthmacher Geschäftsführung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender), Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt, Prof. Dr. Sebastian M. Schmidt
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