Starting all VMs and Containers one by one is slow

[Abyss]

Hello Proxmox~

When it comes to 'Starting all VMs and Containers', proxmox is starting them one by one, so it will take a lot of time to start all vms.


I wonder why not start them in parallel? If I remember correctly, it used to be three at the same time.
Does it mean commands like 'pct start' cannot be executed simultaneously?

Thanks!

 

[Abyss]

proxmox-ve: 6.4-1 (running kernel: 5.4.114-1-pve)
pve-manager: 6.4-6 (running version: 6.4-6/be2fa32c)
pve-kernel-5.4: 6.4-2
pve-kernel-helper: 6.4-2
pve-kernel-5.4.114-1-pve: 5.4.114-1
pve-kernel-5.4.106-1-pve: 5.4.106-1
pve-kernel-5.4.101-1-pve: 5.4.101-1
pve-kernel-5.4.78-2-pve: 5.4.78-2
pve-kernel-5.4.78-1-pve: 5.4.78-1
pve-kernel-5.4.65-1-pve: 5.4.65-1
pve-kernel-5.4.60-1-pve: 5.4.60-2
pve-kernel-5.4.55-1-pve: 5.4.55-1
pve-kernel-5.4.44-2-pve: 5.4.44-2
pve-kernel-5.4.34-1-pve: 5.4.34-2
ceph-fuse: 12.2.11+dfsg1-2.1+b1
corosync: 3.1.2-pve1
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: residual config
ifupdown2: 3.0.0-1+pve3
ksm-control-daemon: 1.3-1
libjs-extjs: 6.0.1-10
libknet1: 1.20-pve1
libproxmox-acme-perl: 1.1.0
libproxmox-backup-qemu0: 1.0.3-1
libpve-access-control: 6.4-1
libpve-apiclient-perl: 3.1-3
libpve-common-perl: 6.4-3
libpve-guest-common-perl: 3.1-5
libpve-http-server-perl: 3.2-2
libpve-storage-perl: 6.4-1
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve4
lxc-pve: 4.0.6-2
lxcfs: 4.0.6-pve1
novnc-pve: 1.1.0-1
proxmox-backup-client: 1.1.6-2
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.5-4
pve-cluster: 6.4-1
pve-container: 3.3-5
pve-docs: 6.4-2
pve-edk2-firmware: 2.20200531-1
pve-firewall: 4.1-3
pve-firmware: 3.2-3
pve-ha-manager: 3.1-1
pve-i18n: 2.3-1
pve-qemu-kvm: 5.2.0-6
pve-xtermjs: 4.7.0-3
qemu-server: 6.4-2
smartmontools: 7.2-pve2
spiceterm: 3.1-1
vncterm: 1.6-2
zfsutils-linux: 2.0.4-pve1

 

[ThijmenGThN]

Any update regarding this thread?

I'm also unable to find an answer or remedy for this behaviour, it would be interesting and helpful to know how to get parallel start-up to work.

 

[Kingneutron]

Have a look at this script, you can probably adapt it if you have fast enough storage to get past I/O contention

https://github.com/kneutron/ansitest/blob/master/proxmox/proxmox-SHUTDOWN-RUNNING-VMS.sh

You'll have to uncheck " Start at boot " in all the VM/CTR options to avoid PVE trying to start them individually, AND keep track of which ones you want started after reboot in the script.