Snapshots with RAM, disk resize and Ceph

[FinnTux]

Hello,

I'm testing ceph on my small home cluster and ran into a problems.

1) Snapshot with RAM doesn't work. I get task error: "VM 10302 qmp command 'savevm-start' failed - failed to open '/dev/rbd/rbd/vm-10302-state-snap2ram'"

2) Resizing a disk of running VM gives another error: "VM 10302 qmp command 'block_resize' failed - Could not resize: Invalid argument (500)"

I was under impression that these features should work on ceph?

Versions
proxmox-ve: 4.1-37 (running kernel: 4.2.8-1-pve)
pve-manager: 4.1-13 (running version: 4.1-13/cfb599fb)
pve-kernel-4.2.8-1-pve: 4.2.8-37
lvm2: 2.02.116-pve2
corosync-pve: 2.3.5-2
libqb0: 1.0-1
pve-cluster: 4.0-32
qemu-server: 4.0-55
pve-firmware: 1.1-7
libpve-common-perl: 4.0-48
libpve-access-control: 4.0-11
libpve-storage-perl: 4.0-40
pve-libspice-server1: 0.12.5-2
vncterm: 1.2-1
pve-qemu-kvm: 2.5-5
pve-container: 1.0-44
pve-firewall: 2.0-17
pve-ha-manager: 1.0-21
ksm-control-daemon: 1.2-1
glusterfs-client: 3.5.2-2+deb8u1
lxc-pve: 1.1.5-7
lxcfs: 0.13-pve3
cgmanager: 0.39-pve1
criu: 1.6.0-1
openvswitch-switch: 2.3.2-2

 

[spirit]

disable krbd, they are some problems with snapshots currently. (not sure about resize)

for now, krbd is ok for lxc. For qemu, it's better to works wihout it.

 

[FinnTux]

Ah yes. That was it, thanks. I remember reading that krbd is a bit faster so I turned it on.