On 13/10/19 20:56, Jerry Geis wrote: >> 6 hours are too much. First of all you need to check your nvme >> performace (dd can help? dd if=/dev/zero of=/test bs=1M count=10000 andd >> see results. If you want results more benchmark oriented you could try >> bonnie++ as suggested by Jerry). > >> Other this, have you got kvm module loaded and enabled cpu >> virtualization option in the BIOS? > >> If yes, have you got created the VM using --accelerate? > >> Have you tried another distro on VM? > > > I mounted the partition under C7.7 and ran the nvme test. Pretty much > came back in seconds for 10G test. > > dd if=/dev/zero of=test bs=1M count=10000 > 10000+0 records in > 10000+0 records out > 10485760000 bytes (10 GB) copied, 5.45451 s, 1.9 GB/s > > Yes kvm_intel is loaded as a module. > > I am using the "-hda /dev/nvme0n1" when I run qemu.... I'm thinking this > works find for my other "img" files - but does not work for "well" for my > physical NVME. > What is the correct argument perhaps to use for running a physical NVME > disk as a qemu guest ?? > > Thanks, > > Jerry > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > Hi Jerry, I never used a block device as disk devices on my vms. From virt-install (I use it) man pages from --disk section: path A path to some storage media to use, existing or not. Existing media can be a file or block device. Specifying a non-existent path implies attempting to create the new storage, and will require specifying a 'size' value. Even for remote hosts, virt-install will try to use libvirt storage APIs to automatically create the given path. If the hypervisor supports it, path can also be a network URL, like http://example.com/some-disk.img . For network paths, they hypervisor will directly access the storage, nothing is downloaded locally. So you can try like: virt-install -n NAME -r mem --vcpus=N --accelerate --os-type=X --os-variant=X --disk path=/dev/nvme0n1[pN] ...and so on. It should run without problem. I added [pN] because you can use also a partition other than entire nvme0n1. I don't know if any type of option would be needed for a particular type of device like nvme. hope that helps. Alessandro.