On Sun, May 19, 2019 at 9:04 PM Hetz Ben Hamo <[email protected]> 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)? 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 -- [email protected] > To unsubscribe send an email to [email protected] > 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/[email protected]/message/6VDXFP6NFUIB4F5UKOJKIVRIQO4KKBZK/ -- Didi _______________________________________________ Devel mailing list -- [email protected] To unsubscribe send an email to [email protected] 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/[email protected]/message/VS72KTRQQSEARBS6TUHV3IHKESNDMVJD/
