New Member
Apr 11, 2018
How do you do!
First of all i have this config the server/proxmox:
# pveversion -v
proxmox-ve: 4.4-108 (running kernel: 4.4.98-5-pve)
pve-manager: 4.4-22 (running version: 4.4-22/2728f613)
pve-kernel-4.4.35-1-pve: 4.4.35-77
pve-kernel-4.4.98-3-pve: 4.4.98-103
pve-kernel-4.4.98-5-pve: 4.4.98-105
pve-kernel-4.4.95-1-pve: 4.4.95-99
pve-kernel-4.4.98-6-pve: 4.4.98-107
pve-kernel-4.4.114-1-pve: 4.4.114-108
pve-kernel-4.4.83-1-pve: 4.4.83-96
lvm2: 2.02.116-pve3
corosync-pve: 2.4.2-2~pve4+1
libqb0: 1.0.1-1
pve-cluster: 4.0-54
qemu-server: 4.0-115
pve-firmware: 1.1-11
libpve-common-perl: 4.0-96
libpve-access-control: 4.0-23
libpve-storage-perl: 4.0-76
pve-libspice-server1: 0.12.8-2
vncterm: 1.3-2
pve-docs: 4.4-4
pve-qemu-kvm: 2.9.1-9~pve4
pve-container: 1.0-105
pve-firewall: 2.0-33
pve-ha-manager: 1.0-41
ksm-control-daemon: 1.2-1
glusterfs-client: 3.5.2-2+deb8u3
lxc-pve: 2.0.7-4
lxcfs: 2.0.6-pve1
criu: 1.6.0-1
novnc-pve: 0.5-9
smartmontools: 6.5+svn4324-1~pve80

ceph: 10.2.10-1~bpo80+1

# free -m
             total       used       free     shared    buffers     cached
Mem:         48356      36350      12005        258        158      16461
-/+ buffers/cache:      19730      28625
Swap:         8191        177       8014

As i understand free mem fo use is 12 Gb. But the pic show me some 20Gb(see attachment)

Problem is, when i run VM it show me error:
kvm: -object memory-backend-ram,id=ram-node0,size=4096M: cannot set up guest memory 'ram-node0': Cannot allocate memory
TASK ERROR: start failed: command '/usr/bin/kvm -id 101 -chardev 'socket,id=qmp,path=/var/run/qemu-server/101.qmp,server,nowait' -mon 'chardev=qmp,mode=control' -pidfile /var/run/qemu-server/ -daemonize -smbios 'type=1,uuid=c7015a59-c4eb-4f45-99a3-36515a2a19c1' -name test-deb -smp '4,sockets=1,cores=4,maxcpus=4' -nodefaults -boot 'menu=on,strict=on,reboot-timeout=1000,splash=/usr/share/qemu-server/bootsplash.jpg' -vga std -vnc unix:/var/run/qemu-server/101.vnc,x509,password -cpu kvm64,+lahf_lm,+sep,+kvm_pv_unhalt,+kvm_pv_eoi,enforce -m 4096 -object 'memory-backend-ram,id=ram-node0,size=4096M' -numa 'node,nodeid=0,cpus=0-3,memdev=ram-node0' -k en-us -device 'pci-bridge,id=pci.2,chassis_nr=2,bus=pci.0,addr=0x1f' -device 'pci-bridge,id=pci.1,chassis_nr=1,bus=pci.0,addr=0x1e' -device 'piix3-usb-uhci,id=uhci,bus=pci.0,addr=0x1.0x2' -device 'usb-tablet,id=tablet,bus=uhci.0,port=1' -device 'virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3' -iscsi '' -drive 'file=/var/lib/vz/template/iso/debian-9.4.0-amd64-netinst.iso,if=none,id=drive-ide2,media=cdrom,aio=threads' -device 'ide-cd,bus=ide.1,unit=0,drive=drive-ide2,id=ide2,bootindex=200' -device 'virtio-scsi-pci,id=scsihw0,bus=pci.0,addr=0x5' -drive 'file=rbd:m3x-vm/vm-101-disk-1:mon_host=;;,if=none,id=drive-scsi0,format=raw,cache=none,aio=native,detect-zeroes=on' -device 'scsi-hd,bus=scsihw0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0,id=scsi0,bootindex=100' -netdev 'type=tap,id=net0,ifname=tap101i0,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown' -device 'e1000,mac=CE:66:DF:78:85:4F,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=300'' failed: exit code 1

I can't understand why it show me error. The server have enough free memory. Explain please what could be the problem? If a similar problem has already occurred, give the link for review.


  • mem.png
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