mirror of
https://github.com/ceph/ceph
synced 2024-12-24 20:33:27 +00:00
b6c43d2aff
This makes deleting images with many snapshots easier. Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com>
103 lines
3.0 KiB
Bash
Executable File
103 lines
3.0 KiB
Bash
Executable File
#!/bin/bash -ex
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CEPH_SECRET_FILE=${CEPH_SECRET_FILE:-}
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CEPH_ID=${CEPH_ID:-admin}
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SECRET_ARGS=''
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if [ ! -z $CEPH_SECRET_FILE ]; then
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SECRET_ARGS="--secret $CEPH_SECRET_FILE"
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fi
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TMP_FILES="/tmp/img1 /tmp/img1.small /tmp/img1.snap1 /tmp/img1.export /tmp/img1.trunc"
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function get_device_dir {
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local POOL=$1
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local IMAGE=$2
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local SNAP=$3
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rbd showmapped | tail -n +2 | egrep "\s+$POOL\s+$IMAGE\s+$SNAP\s+" | cut -f 1
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}
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function clean_up {
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rbd unmap /dev/rbd/rbd/testimg1 || true
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rbd unmap /dev/rbd/rbd/testimg1@snap1 || true
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sudo chown root /sys/bus/rbd/add /sys/bus/rbd/remove
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rbd snap purge testimg1 || true
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rbd rm testimg1 || true
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sudo rm -f $TMP_FILES
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}
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clean_up
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trap clean_up INT TERM EXIT
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# allow ubuntu user to map/unmap rbd devices
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sudo chown ubuntu /sys/bus/rbd/add /sys/bus/rbd/remove
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# create an image
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dd if=/bin/sh of=/tmp/img1 bs=1k count=1 seek=10
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dd if=/bin/dd of=/tmp/img1 bs=1k count=10 seek=100
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dd if=/bin/rm of=/tmp/img1 bs=1k count=100 seek=1000
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dd if=/bin/ls of=/tmp/img1 bs=1k seek=10000
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dd if=/bin/ln of=/tmp/img1 bs=1k seek=100000
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dd if=/dev/zero of=/tmp/img1 count=0 seek=150000
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# import
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rbd import /tmp/img1 testimg1
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rbd map testimg1 --user $CEPH_ID $SECRET_ARGS
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DEV_ID1=$(get_device_dir rbd testimg1 -)
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echo "dev_id1 = $DEV_ID1"
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cat /sys/bus/rbd/devices/$DEV_ID1/size
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cat /sys/bus/rbd/devices/$DEV_ID1/size | grep 76800000
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# wait for udev to catch up
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while test ! -e /dev/rbd/rbd/testimg1
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do
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sleep 1
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done
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sudo dd if=/dev/rbd/rbd/testimg1 of=/tmp/img1.export
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cmp /tmp/img1 /tmp/img1.export
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# snapshot
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rbd snap create testimg1 --snap=snap1
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cat /sys/bus/rbd/devices/$DEV_ID1/snap_snap1/snap_size | grep 76800000
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rbd map --snap=snap1 testimg1 --user $CEPH_ID $SECRET_ARGS
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DEV_ID2=$(get_device_dir rbd testimg1 snap1)
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cat /sys/bus/rbd/devices/$DEV_ID2/size | grep 76800000
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# wait for udev to catch up
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while test ! -e /dev/rbd/rbd/testimg1@snap1
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do
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sleep 1
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done
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sudo dd if=/dev/rbd/rbd/testimg1@snap1 of=/tmp/img1.snap1
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cmp /tmp/img1 /tmp/img1.snap1
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# resize
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rbd resize testimg1 --size=40
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echo 1 | sudo tee /sys/bus/rbd/devices/$DEV_ID1/refresh
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cat /sys/bus/rbd/devices/$DEV_ID1/size | grep 41943040
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echo 1 | sudo tee /sys/bus/rbd/devices/$DEV_ID2/refresh
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cat /sys/bus/rbd/devices/$DEV_ID2/size | grep 76800000
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sudo dd if=/dev/rbd/rbd/testimg1 of=/tmp/img1.small
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cp /tmp/img1 /tmp/img1.trunc
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truncate -s 41943040 /tmp/img1.trunc
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cmp /tmp/img1.trunc /tmp/img1.small
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# rollback and check data again
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rbd snap rollback --snap=snap1 testimg1
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echo 1 | sudo tee /sys/bus/rbd/devices/$DEV_ID1/refresh
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cat /sys/bus/rbd/devices/$DEV_ID1/snap_snap1/snap_size | grep 76800000
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cat /sys/bus/rbd/devices/$DEV_ID1/size | grep 76800000
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sudo rm -f /tmp/img1.snap1 /tmp/img1.export
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sudo dd if=/dev/rbd/rbd/testimg1@snap1 of=/tmp/img1.snap1
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cmp /tmp/img1 /tmp/img1.snap1
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sudo dd if=/dev/rbd/rbd/testimg1 of=/tmp/img1.export
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cmp /tmp/img1 /tmp/img1.export
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# remove snapshot and detect error from mapped snapshot
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rbd snap rm --snap=snap1 testimg1
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sudo dd if=/dev/rbd/rbd/testimg1@snap1 of=/tmp/img1.snap1 2>&1 | grep 'Input/output error'
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echo OK
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