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cpumodel=kvm64 protected you against spectre in your vm, but not meltdown. (you need to patch your guest kernel) host kernel need to be updated to avoid that a vm access to memory of another vm.

https://forum.proxmox.com/threads/fuckwit-kaiser-kpti.39025/

It's allow format conversion too. (--format qcow2) qm importdisk <vmid> <source> <storage> [OPTIONS] Import an external disk image as an unused disk in a VM. The image format has to be supported by qemu-img(1). <vmid>: <integer> (1 - N) The (unique) ID of...

4/5/6 : proxmox 5 have "qm importdisk <vmid> <source> <storage>" (import any disk format to any supported proxmox storage) Do you have tested to enable ovmf to have uefi support ? (instead converting all to mbr)

/etc/default/ksmtuned # start ksmtuned at boot [yes|no] START=no

strange, mds failover is automatic for me without any tuning my ceph -w output: "mds: cephfs-1/1/1 up {0=myhost1.lan=up:active}, 2 up:standby" Note the 2 standby nodes. are your sure that all mds daemons are running on your cluster ?

no,it's has been fixed a long time ago. qemu cache=none -> rbd_cache=false qemu cache=write-> rbd_cache=true

you should have the baseimageid in your linked clone disk path.

I'll try to rebase it on last proxmox 5.X next month.

you need to restart your ceph cluster (mon/osd), and all the vms.

seem to be hardcoded in qemu https://git.qemu.org/?p=qemu.git;a=blob_plain;f=target/i386/cpu.c;hb=HEAD #define L2_SETS 4096 #define L3_N_SETS 16384

if you manage your own network (routers/bgp), you can change bgp annonce to failover ips to another datacenter. if you don't manage your network, for web, you can deploy reverse proxy on each datacenter and an external loadbalancer (cloudflare for example), then manage your vm ips in a private...

on my side, I have "omconfig" correctly installed /opt/dell/srvadmin/bin/omconfig (apt-get install srvadmin-all)

use the openmanage jessie repo and install the 2 missing debs manually.

yes, no problem. Just don't setup same clustername. (because multicast address is compute from clustername)

you need 2 packages from jessie to get openmanage 8.4 working on stretch currently. wget http://ftp.us.debian.org/debian/pool/main/o/openslp-dfsg/libslp1_1.2.1-10+deb8u1_amd64.deb dpkg -i libslp1_1.2.1-10+deb8u1_amd64.deb wget...

https://git.proxmox.com/?p=pve-kernel.git;a=summary 25 hours ago Fabian Grünbichler bump version to 4.13-28, bump ABI to 4.13.8-2-pve master commit | commitdiff | tree | snapshot 25 hours ago Fabian Grünbichler revert mmu changes causing bluescreens commit | commitdiff | tree | snapshot so...

It'll reduce the performance a little bit, but not too much. (virtio devices are still accelerated). I'll try to apply patches on qemu tomorrow and build a deb. if you have time to test it, it could be great.

any news for today ? just wonder if this qemu fix for hyperv and msr could help https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg04221.html

yes you can change it after install. it's just add or remove some hyperv cpu flags to qemu command line.