1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
#!/bin/sh
set -e
if [ -d /var/lib/nova/instances/_base/ ] && [ -n "$(ls -A /var/lib/nova/instances/_base/)" ] ; then
cd /var/lib/nova/instances/_base/
BACKING_LIST=$(mktemp -t $(basename $0).XXXXXX)
# Lookup all base image if they have a backing image
find -type f | xargs -n1 qemu-img info | grep backing | sed -e 's/.*file: //' -e 's/ .*//' >${BACKING_LIST}
# Lookup all running instances if they have a backing image
find /var/lib/nova/instances -type f -iname disk | xargs -n1 qemu-img info | grep backing | sed -e 's/.*file: //' -e 's/ .*//' >>${BACKING_LIST}
# Add them in an ignore list for find
DO_NOT_DELETE="! -name . "
for i in $(cat ${${BACKING_LIST} | sort -u) ; do
DO_NOT_DELETE="${DO_NOT_DELETE} -a ! -name "$(basename $i)
done
rm -f ${BACKING_LIST}
# Delete all non-backing image older than 6h
find /var/lib/nova/instances/_base/ -mmin +360 -type f \( ${DO_NOT_DELETE} \) -delete
fi
|
