On Mon, May 20, 2019 at 9:26 AM Yedidyah Bar David <d...@redhat.com> wrote:
> On Sun, May 19, 2019 at 9:04 PM Hetz Ben Hamo <h...@hetz.biz> wrote: > > > > Hi, > > > > In oVirt 4.3 it looks like the storage domains has been consolidated to > data only and ISO, export are being deprecated, which IMHO is a good thing. > However, when it comes to local storage and storage domains (when trying to > mount local directory etc..) - the behavior of oVirt, IMHO, is weird, > compared to other virtualization - your VM's are being switched to another > domain, instead of just leaving them in the same domain and disabling live > migration. > > > > So, as I mentioned above, I don't see any reason for this switching if > using local storage, but now there's a new technology on the block - the > Optane DC, and Samsung will probably show their NVDiMM solution soon. > > > > In both cases - in order to use this persistent memory, you'll need to > "cut" part of the NVDiMM and mount it on the VM along side with your other > NFS/iSCSI disks. This could probably kill live migration (at least in the > first stage - see AMD MxGPU in the KVM forum video's work from AMD and > Alibaba with live migration) - but that's a pretty good solution to utilize > Optane DC/NVDiMM. > > > > So my question is: Is there any chance that oVirt 4.4 will finally allow > local storage to be just like NFS/iSCSI instead of kicking the node to > another domain? > > Not sure about a redesign of the architecture (e.g. breaking the > local/shared DC distinction), but one of the following > already-existing hooks might be enough for your needs: > > https://ovirt.org/documentation/admin-guide/appe-VDSM_and_Hooks.html > https://www.ovirt.org/develop/developer-guide/vdsm/hooks.html > > https://github.com/oVirt/vdsm/tree/master/vdsm_hooks/localdisk > > https://www.ovirt.org/develop/developer-guide/vdsm/hook/scratchpad.html > > https://www.ovirt.org/develop/developer-guide/vdsm/hook/vmdisk.html > > Adding danken. Dan - do we have any recommendations re this? Is > localdisk preferred over vmdisk? localdisk is newer, has much more > documentation, but only in the source, not on the website. > > > > > Also, will there be a functionality through the web interface to > copy/move files between storage domains? I don't see it anywhere. > > No idea, did you file an RFE (or know about one)? > Copy/move in the UI will be part of the next 4.3 minor release: https://bugzilla.redhat.com/show_bug.cgi?id=1600432 https://gerrit.ovirt.org/#/c/99988/ > Best regards, > > > > > (In case you guys in Israel need some Optane DC's sticks, I can talk to > Intel Israel about it) > > > > Thanks > > Hetz > > _______________________________________________ > > Devel mailing list -- devel@ovirt.org > > To unsubscribe send an email to devel-le...@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/devel@ovirt.org/message/6VDXFP6NFUIB4F5UKOJKIVRIQO4KKBZK/ > -- > Didi > _______________________________________________ > Devel mailing list -- devel@ovirt.org > To unsubscribe send an email to devel-le...@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/devel@ovirt.org/message/VS72KTRQQSEARBS6TUHV3IHKESNDMVJD/ >
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