48 lines
1.7 KiB
Bash
48 lines
1.7 KiB
Bash
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#!/usr/bin/env bash
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# Apply per-VM I/O caps via qm set on the PVE host.
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# - Reads each VM's current boot-disk options
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# - Appends mbps_rd=<N>,mbps_wr=<N>
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# - Re-applies via qm set (live, no reboot needed)
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# - Verifies with qm config | grep mbps
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set -euo pipefail
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# vmid:disk_slot:mbps_rd:mbps_wr (Linux VMs only — skipping 101 pfsense BSD, 300 Windows)
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TARGETS=(
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"102:scsi0:60:60" # devvm
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"103:sata0:40:40" # home-assistant
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"200:scsi0:100:60" # k8s-master (alloy storm origin — firmest clip)
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"201:scsi1:150:120" # k8s-node1 (GPU + many CSI disks; boots from scsi1)
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"202:scsi0:150:120" # k8s-node2
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"203:scsi0:150:120" # k8s-node3
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"204:scsi0:150:120" # k8s-node4 (currently doing write recovery)
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"220:scsi0:40:40" # docker-registry
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)
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for spec in "${TARGETS[@]}"; do
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IFS=: read -r vmid slot rd wr <<<"$spec"
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printf '\n=== VMID %s slot=%s rd=%s MB/s wr=%s MB/s ===\n' "$vmid" "$slot" "$rd" "$wr"
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current=$(qm config "$vmid" | awk -v s="$slot:" '$1==s {sub(/^[^ ]+ /, ""); print; exit}')
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if [[ -z "$current" ]]; then
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echo " ERROR: could not read $slot for vmid $vmid — skipping"
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continue
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fi
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# Strip any existing mbps_rd / mbps_wr from the current string (idempotent)
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cleaned=$(echo "$current" | sed -E 's/,mbps_rd=[0-9]+//g; s/,mbps_wr=[0-9]+//g')
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newvalue="${cleaned},mbps_rd=${rd},mbps_wr=${wr}"
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echo " before: $current"
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echo " after: $newvalue"
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qm set "$vmid" "--$slot" "$newvalue"
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echo " verify: $(qm config "$vmid" | awk -v s="$slot:" '$1==s {print; exit}')"
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done
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echo
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echo "=== Final verification — mbps on all targets ==="
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for spec in "${TARGETS[@]}"; do
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IFS=: read -r vmid slot _ _ <<<"$spec"
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echo "vmid $vmid: $(qm config "$vmid" | awk -v s="$slot:" '$1==s {print; exit}')"
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done
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