[ovirt-users] Re: VM poor iops

Thank you Jayme. I am trying to do this, but I am getting an error, since the volume is replica 1 distribute, and it seems that oVirt expects a replica 3 volume. Would it be another way to optimize the volume in this situation ? On Thu, Sep 13, 2018, 17:49 Jayme <jaymef(a)gmail.com&gt; wrote: > I had similar problems until I clicked "optimize volume for vmstore" in > the admin GUI for each data volume. I'm not sure if this is what is > causing your problem here but I'd recommend trying that first. It is > suppose to be optimized by default but for some reason my ovirt 4.2 cockpit > deploy did not apply those settings automatically. > > On Thu, Sep 13, 2018 at 10:21 AM Leo David <leoalex(a)gmail.com&gt; wrote: > >> Hi Everyone, >> I am encountering the following issue on a single instance >> hyper-converged 4.2 setup. >> The following fio test was done: >> >> fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 >> --name=test --filename=test --bs=4k --iodepth=64 --size=4G >> --readwrite=randwrite >> The results are very poor doing the test inside of a vm with a >> prealocated disk on the ssd store: ~2k IOPS >> Same test done on the oVirt node directly on the mounted ssd_lvm: ~30k >> IOPS >> Same test done, this time on the gluster mount path: ~20K IOPS >> >> What could be the issue that the vms have this slow hdd performance ( 2k >> on ssd !! )? >> Thank you very much ! >> >> >> >> >> -- >> Best regards, Leo David >> _______________________________________________ >> Users mailing list -- users(a)ovirt.org >> To unsubscribe send an email to users-leave(a)ovirt.org >> Privacy Statement: https://www.ovirt.org/site/privacy-policy/ >> oVirt Code of Conduct: >> https://www.ovirt.org/community/about/community-guidelines/ >> List Archives: >> https://lists.ovirt.org/archives/list/users@ovirt.org/message/FCCIZFRWINW... >> >