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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