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32 lines
973 B
Bash
32 lines
973 B
Bash
#!/bin/bash
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# 2024.feb kneutron
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# This does a HIBERNATE to disk, not shutdown -- in parallel
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# Useful if you are switched to UPS power and need to shutdown gracefully in minimum time
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# NOTE - Will generate A LOT of disk I/O
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# Use "Bulk actions / Bulk shutdown" in the GUI otherwise
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# REF: https://forum.proxmox.com/threads/shutting-down-all-vm-ct-in-parallel.112519/
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[ $(which parallel |wc -l) -gt 0 ] || apt-get install -y parallel
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VM_LIST=/dev/shm/vmlist.in
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# 1 2 3
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# processor : 7
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lastcpu=$(grep processor /proc/cpuinfo |tail -n 1 |awk '{print $3}')
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[ $lastcpu -gt 1 ] && let lastcpu=$lastcpu-1
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[ -e "$VM_LIST" ] && rm -f "$VM_LIST" # delete the old file ONLY IF it exists
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for vmid in $(qm list |grep running |awk '{print $1}'); do
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echo "qm shutdown $vmid" >>"$VM_LIST"
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# echo "qm suspend $vmid --todisk" >>"$VM_LIST"
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done
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echo "$(date) - HIBER ALL VMS using $lastcpu threads"
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time cat "$VM_LIST" |parallel -j $lastcpu --progress
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date
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exit;
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