33 lines
1.1 KiB
YAML
33 lines
1.1 KiB
YAML
---
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schema: pegleg/Script/v1
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metadata:
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schema: metadata/Document/v1
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name: rbd-roomba-scanner
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storagePolicy: cleartext
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layeringDefinition:
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abstract: false
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layer: global
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data: |-
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#!/bin/bash
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set -ex
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# don't put it in /tmp where it can be p0wned (???)
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lsblk | awk '/^rbd/ {if($7==""){print $0}}' | awk '{ printf "/dev/%s\n",$1 }' > /var/run/rbd_list
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# wait a while, so we don't catch rbd devices the kubelet is working on mounting
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sleep 60
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# finally, examine rbd devices again and if any were seen previously (60s ago) we will
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# forcefully unmount them if they have no fs mounts
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DATE=$(date)
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for rbd in `lsblk | awk '/^rbd/ {if($7==""){print $0}}' | awk '{ printf "/dev/%s\n",$1 }'`; do
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if grep -q $rbd /var/run/rbd_list; then
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echo "[${DATE}] Unmapping stale RBD $rbd"
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/usr/bin/rbd unmap -o force $rbd
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# NOTE(supamatt): rbd unmap -o force will only succeed if there are NO pending I/O
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else
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echo "[${DATE}] Skipping RBD $rbd as it hasn't been stale for at least 60 seconds"
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fi
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done
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rm -rf /var/run/rbd_list
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