Hi, Anyone who has real experiences on this case, could you give me more information and estimation?
Thanks. 2018-08-05 15:00 GMT+07:00 Sam Huracan <nowitzki.sa...@gmail.com>: > Thanks Saludos! > > As far as I know, we should keep the FileStore SSD Journal after > upgrading, because BlueStore will affect the write performance?? > I think I'll choose Luminous which is recently the most stable version. > > > > > > > > On Sat, Aug 4, 2018, 03:31 Xavier Trilla <xavier.tri...@clouding.io> > wrote: > >> Hi Sam, >> >> >> >> Having done any benchmark myself -as we only use SSDs or NVMes- but is my >> understanding Luminous -I would not recommend upgrading production to Mimic >> yet, but I’m quite conservative- Bluestore is going to be slower for writes >> than filestore with SSD journals. >> >> >> >> You could try dmcache, bcache, etc and add some SSD caching to each HDD >> (Meaning it can affect write endurance of the SSDs). >> >> >> >> Dmcache and bluestore seems to be a quite interesting option IMO, as >> you’ll get faster reads and writes, and you’ll avoid the double write >> penalty of filestore. >> >> >> >> Cheers! >> >> >> >> Saludos Cordiales, >> >> Xavier Trilla P. >> >> Clouding.io <https://clouding.io/> >> >> >> >> ¿Un Servidor Cloud con SSDs, redundado >> >> y disponible en menos de 30 segundos? >> >> >> >> ¡Pruébalo ahora en Clouding.io <https://clouding.io/>! >> >> >> >> *De:* ceph-users <ceph-users-boun...@lists.ceph.com> * En nombre de *Sam >> Huracan >> *Enviado el:* viernes, 3 de agosto de 2018 16:36 >> *Para:* ceph-users@lists.ceph.com >> *Asunto:* Re: [ceph-users] FileStore SSD (journal) vs BlueStore SSD >> (DB/Wal) >> >> >> >> Hi, >> >> >> >> Anyone can help us answer these questions? >> >> >> >> >> >> >> >> 2018-08-03 8:36 GMT+07:00 Sam Huracan <nowitzki.sa...@gmail.com>: >> >> Hi Cephers, >> >> >> >> We intend to upgrade our Cluster from Jewel to Luminous (or Mimic?) >> >> >> >> Our model is currently using OSD File Store with SSD Journal (1 SSD for 7 >> SATA 7.2K) >> >> >> >> My question are: >> >> >> >> >> >> 1.Should we change to BlueStore with DB/WAL put in SSD and data in HDD? >> (we want to keep the model using journal SSD for caching). Is there any >> improvement in overall performance? We think with model SSD cache, >> FileStore will write faster because data written in SSD before flushing to >> SAS, whereas with BlueStore, data will be written directly to SAS. >> >> >> >> >> >> 2. Do you guys ever benchmark and compare 2 cluster: FileStore SSD >> (journal) and BlueStore SSD (DB/WAL) like that? >> >> >> >> >> >> Thanks in advance. >> >> >> >> >> >> >> >
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