Hi Ivan, it is a standard installation without any tuning. We are using 2x 10Gbit interfaces on all servers. I am not really sure how ScaleIO handles the replication at the moment. I do not have any experience with Ceph too so I am unable to compare it. FYI: If you use 128k instead of 4k blocks than the IOPS are dropping to 11.000.
Mit freundlichen Grüßen / With kind regards, Swen -----Ursprüngliche Nachricht----- Von: Ivan Kudryavtsev [mailto:kudryavtsev...@bw-sw.com] Gesendet: Freitag, 2. Februar 2018 15:57 An: S. Brüseke - proIO GmbH <s.brues...@proio.com> Cc: users@cloudstack.apache.org Betreff: Re: AW: AW: KVM storage cluster Swen, performance looks awesome, but still wonder where is the magic here, because AFAIK Ceph is not capable to even touch the base, but Red Hat bets on it... Might it be the ScaleIO doesn't wait while the replication complete for IO or other hack is used? 2 февр. 2018 г. 3:19 ПП пользователь "S. Brüseke - proIO GmbH" < s.brues...@proio.com> написал: > Hi Ivan, > > > > it is a 50/50 read-write mix. Here is the fio command I used: > > fio --name=test --readwrite=randrw --rwmixwrite=50 --bs=4k > --invalidate=1 --group_reporting --direct=1 --filename=/dev/scinia > --time_based > --runtime=9999 --ioengine=libaio --numjobs=4 --iodepth=256 > --norandommap > --randrepeat=0 –exitall > > > > Result was: > > IO Workload 274.000 IOPS > > 1,0 GB/s transfer > > Read Bandwith 536MB/s > > Read IOPS 137.000 > > Write Bandwith 536MB/s > > Write IOPS 137.000 > > > > If you want me to run a different fio command just send it. My lab is > still running. > > > > Any idea how I can mount my ScaleIO volume in KVM? > > > > Mit freundlichen Grüßen / With kind regards, > > > > Swen > > > > *Von:* Ivan Kudryavtsev [mailto:kudryavtsev...@bw-sw.com] > *Gesendet:* Freitag, 2. Februar 2018 02:58 > *An:* users@cloudstack.apache.org; S. Brüseke - proIO GmbH < > s.brues...@proio.com> > *Betreff:* Re: AW: KVM storage cluster > > > > Hi, Swen. Do you test with direct or cached ops or buffered ones? Is > it a write test or rw with certain rw percenrage? Hardly believe the > deployment can do 250k IOs for writting with single VM test. > > > > 2 февр. 2018 г. 4:56 пользователь "S. Brüseke - proIO GmbH" < > s.brues...@proio.com> написал: > > I am also testing with ScaleIO on CentOS7 with KVM. With a 3 node > cluster with each node has 2x 2TB SSD (Samsung PM1663a) I get 250.000 > IOPS when doing a fio test (random 4k). > The only problem is that I do not know how to mount the shared volume > so that KVM can use it to store vms on it. Does anyone know how to do it? > > Mit freundlichen Grüßen / With kind regards, > > Swen > > -----Ursprüngliche Nachricht----- > Von: Andrija Panic [mailto:andrija.pa...@gmail.com] > Gesendet: Donnerstag, 1. Februar 2018 22:00 > An: users <users@cloudstack.apache.org> > Betreff: Re: KVM storage cluster > > > a bit late, but: > > - for any IO heavy (medium even...) workload, try to avoid CEPH, no > offence, simply it takes lot of $$$ to make CEPH perform in random IO > worlds (imagine RHEL and vendors provide only refernce architecutre > with SEQUNATIAL benchmark workload, not random) - not to mention a > huge list of bugs we hit back in the days (simply, one/single great > guy handled the CEPH integration for CloudStack, but otherwise not lot > of help from other committers, if not mistaken, afaik...) > - NFS better performance but not magic... (but most well supported, > code wise, bug-less wise :) > - and for top notch (cost some $$$) SolidFire is the way to go (we > have tons of IO heavy customers, so this THE solution really, after > living with CEPH, then NFS on SSDs, etc) and provides guarantied IOPS etc... > > Cheers. > > On 7 January 2018 at 22:46, Grégoire Lamodière <g.lamodi...@dimsi.fr> > wrote: > > > Hi Vahric, > > > > Thank you. I will have a look on it. > > > > Grégoire > > > > > > > > Envoyé depuis mon smartphone Samsung Galaxy. > > > > > > -------- Message d'origine -------- > > De : Vahric MUHTARYAN <vah...@doruk.net.tr> Date : 07/01/2018 21:08 > > (GMT+01:00) À : users@cloudstack.apache.org Objet : Re: KVM storage > > cluster > > > > Hello Grégoire, > > > > I suggest you to look EMC scaleio for block based operations. It has > > a free one too ! And as a block working better then Ceph ;) > > > > Regards > > VM > > > > On 7.01.2018 18:12, "Grégoire Lamodière" <g.lamodi...@dimsi.fr> wrote: > > > > Hi Ivan, > > > > Thank you for your quick reply. > > > > I'll have a look on Ceph and related perfs. > > As you mentionned, 2 DRDB nfs servers can do the job, but if I > > can avoid using 2 blades for just passing blocks to nfs, this is > > even better (and maintain them as well). > > > > Thanks for pointing to ceph. > > > > Grégoire > > > > > > > > > > --- > > Grégoire Lamodière > > T/ + 33 6 76 27 03 31 > > F/ + 33 1 75 43 89 71 > > > > -----Message d'origine----- > > De : Ivan Kudryavtsev [mailto:kudryavtsev...@bw-sw.com] > > Envoyé : dimanche 7 janvier 2018 15:20 > > À : users@cloudstack.apache.org > > Objet : Re: KVM storage cluster > > > > Hi, Grégoire, > > You could have > > - local storage if you like, so every compute node could have > > own space (one lun per host) > > - to have Ceph deployed on the same compute nodes (distribute > > raw devices among nodes) > > - to dedicate certain node as NFS server (or two servers with > > DRBD) > > > > I don't think that shared FS is a good option, even clustered > > LVM is a big pain. > > > > 2018-01-07 21:08 GMT+07:00 Grégoire Lamodière > ><g.lamodi...@dimsi.fr > >: > > > > > Dear all, > > > > > > Since Citrix changed deeply the free version of XenServer 7.3, > > I am in > > > the process of Pocing moving our Xen clusters to KVM on Centos 7 I > > > decided to use HP blades connected to HP P2000 over mutipath > > SAS links. > > > > > > The network part seems fine to me, not so far from what we > > used to > do > > > with Xen. > > > About the storage, I am a little but confused about the shared > > > mountpoint storage option offerds by CS. > > > > > > What would be the good option, in terms of CS, to create a > > cluster > fs > > > using my SAS array ? > > > I read somewhere (a Dag SlideShare I think) that GFS2 is the only > > > clustered FS supported by CS. Is it still correct ? > > > Does it mean I have to create the GFS2 cluster, make identical > mount > > > conf on all host, and use it on CS as NFS ? > > > I do not have to add the storage to KVM prior CS zone creation ? > > > > > > Thanks a lot for any help / information. > > > > > > --- > > > Grégoire Lamodière > > > T/ + 33 6 76 27 03 31 > > > F/ + 33 1 75 43 89 71 > > > > > > > > > > > > -- > > With best regards, Ivan Kudryavtsev > > Bitworks Software, Ltd. > > Cell: +7-923-414-1515 > > WWW: http://bitworks.software/ <http://bw-sw.com/> > > > > > > > > > > > -- > > Andrija Panić > > - proIO GmbH - > Geschäftsführer: Swen Brüseke > Sitz der Gesellschaft: Frankfurt am Main > > USt-IdNr. 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