# [OmniOS-discuss] KVM disk performance r151012

Jorge Schrauwen sjorge+ml at blackdot.be
Fri Oct 3 08:59:43 UTC 2014

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    To your first question, upgrading your zpool will probably not fix it.
    If the vm is on your rpool, your old BE might also become unbootable
    (due to feature flag changes!) so watch out.

    Actually this reminded me of '[OmniOS-discuss] OmniOS r151012 vioblk not
    working with ISO' When I fell back to ide mode it would still sort of
    hang for hours. Switching back to 010 did make it boot on ide, still
    taking ages so I attributed it to OmniOS on OmniOS+KVM was just a bad
    idea and I found an alternative.

    But that detour aside... do you have the windows virtio drivers
    installed?
    If not, try installing them and switching your nic to virtio.

    Jorge

    On 2014-10-03 06:51, Machine Man wrote:

    > After upgrading disk performance dropped from avg. 60MB/s to 17MB/s
    > when copying over the network to a windows vm.
    > Booting back to pre-upgrade and performance is restored
    >
    > Would this be resolved if the pool is upgraded?
    >
    > _______________________________________________
    > OmniOS-discuss mailing list
    > OmniOS-discuss at lists.omniti.com
    > http://lists.omniti.com/mailman/listinfo/omnios-discuss [1]

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