Le Tue, 21 Nov 2017 10:52:43 +0200, Rudi Ahlers <rudiahlers@xxxxxxxxx> a écrit : > [snip, snap] > > Maybe I'm confusing the terminology. I have created a DB and WAL > device for my Bluestore, but I presume that's not a journal > (anymore?). They never were, please read further in the documentation and mailing list archives about their respective functions. For instance: http://docs.ceph.com/docs/master/rados/configuration/bluestore-config-ref/ > > This is how I set it up this time: ceph-disk prepare > --bluestore /dev/sdc --block.wal /dev/sde --block.db /dev/sde Putting the WAL and DB on the same device is a non sequitur once you carefully read the available documentation and ML. The whole purpose of a WAL is in it being on a faster device than the DB/main storage one(s). > > Apart from "ceph grafana", which I can't install at this stage since > the cluster isn't ready yet, how else can I test the SSD cache drives? > > On Tue, Nov 21, 2017 at 10:37 AM, Christian Balzer <chibi@xxxxxxx> > wrote: > > > On Tue, 21 Nov 2017 10:23:20 +0200 Rudi Ahlers wrote: > > > > > Hi, > > > > > > Is it possible to test the CEPH journal to see if it performs > > > optimally? > > You're using bluestore, as I said before, there is no journal. > > > > The SSDs you're using are top of the line, perfectly suited for what > > you're using them for. > > > > > And, how can I see how much data is being cached? > > > > > Nothing gets cached per se with bluestore. > > As for utilization, there were values for the journal, AFAIK there > > isn't anything for the DB stuff at this point. > > > > In general, google "ceph grafana", you will REALLY want to monitor > > a ceph cluster this way. > > > > -- > > Christian Balzer Network/Systems Engineer > > chibi@xxxxxxx Rakuten Communications > > > > > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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