cannot allocate memory for VM

[Brandonage]

Hi again:

I'm sorry I'm coming with new issues :P. But I'm back with some experiments with vagrant and this time I need VM's with more RAM. The problem I think is that g5k assigns physical machines with less physical memory than the one I specify and some of them fail. I attach the log but basically the message is:

==> test-7: Waiting for the job to be running
==> test-7: OAR.test-7.1389082.stderr:  + '[' 8 == -1 ']'
==> test-7: + SMP=8
==> test-7: + echo 'SMP = 8'
==> test-7: + shift
==> test-7: + KEEP_SYSTEM_MEM=1
==> test-7: + '[' 32768 == -1 ']'
==> test-7: + VM_MEM=32768
==> test-7: + echo 'VM_MEM = 32768'
==> test-7: + shift
==> test-7: + net=
==> test-7: + '[' BRIDGE == BRIDGE ']'
==> test-7: + shift
==> test-7: ++ net_bridge .vagrant/test-vagrant-g5k/subnet -drive file=/home/abrandon/public/centos7.3_dcos.qcow2,if=virtio -snapshot
==> test-7: ++ SUBNET_FILE=.vagrant/test-vagrant-g5k/subnet
==> test-7: ++ ipnumber=184
==> test-7: +++ cat .vagrant/test-vagrant-g5k/subnet
==> test-7: +++ head -n 185
==> test-7: +++ tail -n 1
==> test-7: ++ IP_MAC='10.144.120.185   00:16:3E:90:78:B9'
==> test-7: +++ echo 10.144.120.185 00:16:3E:90:78:B9
==> test-7: +++ awk '{print $1}'
==> test-7: ++ IP_ADDR=10.144.120.185
==> test-7: +++ echo 10.144.120.185 00:16:3E:90:78:B9
==> test-7: +++ awk '{print $2}'
==> test-7: ++ MAC_ADDR=00:16:3E:90:78:B9
==> test-7: +++ sudo create_tap
==> test-7: ++ TAP=tap0
==> test-7: ++ echo '-net nic,model=virtio,macaddr=00:16:3E:90:78:B9 -net tap,ifname=tap0,script=no'
==> test-7: + net='-net nic,model=virtio,macaddr=00:16:3E:90:78:B9 -net tap,ifname=tap0,script=no'
==> test-7: ++ hostname
==> test-7: + echo griffon-7.nancy.grid5000.fr
==> test-7: + echo -net nic,model=virtio,macaddr=00:16:3E:90:78:B9 -net tap,ifname=tap0,script=no
==> test-7: + shift
==> test-7: + export TMPDIR=/tmp
==> test-7: + TMPDIR=/tmp
==> test-7: + trap clean_shutdown 12
==> test-7: + wait
==> test-7: + kvm -m 32768 -smp cores=8,threads=1,sockets=1 -fsdev local,security_model=none,id=fsdev0,path=/home/abrandon -device virtio-9p-pci,id=fs0,fsdev=fsdev0,mount_tag=hostshare -nographic -monitor unix:/tmp/vagrant-g5k.1389082.mon,server,nowait -localtime -enable-kvm -net nic,model=virtio,macaddr=00:16:3E:90:78:B9 -net tap,ifname=tap0,script=no -drive file=/home/abrandon/public/centos7.3_dcos.qcow2,if=virtio -snapshot
==> test-7: Cannot set up guest memory 'pc.ram': Cannot allocate memory
==> test-7: An error occurred. The error will be shown after all tasks complete.

log_vagrant_memory.pdf

[msimonin]

Oh yes griffon has only 16GB RAM :) https://www.grid5000.fr/mediawiki/index.php/Nancy:Hardware#Griffon

Maybe we should find a way to prevent this.

[msimonin]

When the amount of ram is specified we should check that it's less than the total available memory : https://github.com/msimonin/vagrant-g5k/blob/master/lib/vagrant-g5k/util/launch_vm.sh#L44-L51