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创建rbd快照.txt
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创建rbd快照.txt
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创建并查看pvc rbd-pvc-test-1
# cat >> rbd-pvc-test-1.yaml << EOF
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: rbd-pvc-test-1
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 6Gi
storageClassName: csi-rbd-sc
EOF
# oc apply -f rbd-pvc-test-1.yaml
# oc get pvc | grep rbd-pvc-test-1
rbd-pvc-test-1 Bound pvc-c962d9f8-d369-4220-b32c-a2192067f076 6Gi RWO csi-rbd-sc 23s
创建pod并使用新建的pvc rbd-pvc-test-1
# cat >> rbd-pvc-test-1-pod.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
name: rbd-pvc-test-1-pod
spec:
containers:
- name: busybox
image: busybox
volumeMounts:
- name: mypvc
mountPath: /tmp
command: ['/bin/sh','-c','sleep 300d']
volumes:
- name: mypvc
persistentVolumeClaim:
claimName: rbd-pvc-test-1
readOnly: false
EOF
# oc apply -f rbd-pvc-test-1-pod.yaml
# oc exec rbd-pvc-test-1-pod -- df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/rbd0 6061632 24568 6020680 0% /tmp
新建文件/tmp/1，写入before
# oc rsh rbd-pvc-test-1-pod
/ # echo before > /tmp/1
创建并查看快照rbd-pvc-test-1-snap-1
# cat >>rbd-pvc-test-1-snap-1.yaml << EOF
apiVersion: snapshot.storage.k8s.io/v1beta1
kind: VolumeSnapshot
metadata:
name: rbd-pvc-test-1-snap-1
spec:
volumeSnapshotClassName: csi-rbdplugin-snapclass
source:
persistentVolumeClaimName: rbd-pvc-test-1
EOF
# oc apply -f cephfs-pvc-test-1-snap-1.yaml
# oc get VolumeSnapshot | grep test
rbd-pvc-test-1-snap-1 false rbd-pvc-test-1 csi-rbdplugin-snapclass snapcontent-505e4644-ef18-40dd-b823-6b524e8ae315 14s
创建基于快照cephfs-pvc-test-1-snap-1的pvc
# cat >> rbd-pvc-test-1-snap-1-pvc.yaml << EOF
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: rbd-pvc-test-1-snap-1-pvc
spec:
storageClassName: csi-rbd-sc
dataSource:
name: rbd-pvc-test-1-snap-1
kind: VolumeSnapshot
apiGroup: snapshot.storage.k8s.io
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 6Gi
EOF
# oc get pvc | grep rbd | grep test
rbd-pvc-test-1 Bound pvc-c962d9f8-d369-4220-b32c-a2192067f076 6Gi RWO csi-rbd-sc 32h
rbd-pvc-test-1-snap-1-pvc Bound pvc-7b7260bc-1677-49a4-91ba-fa47fc05c26e 6Gi RWO csi-rbd-sc 17s
向原pvc写入数据
# oc rsh rbd-pvc-test-1-pod
/ # cd /tmp
/tmp # echo after >> 1
/tmp # cat 1
before
After
新建pod rbd-pvc-test-1-pod-snap-1，使用rbd-pvc-test-1-snap-1-pvc,确认数据与快照一致
# cat >> rbd-pvc-test-1-pod-snap-1.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
name: rbd-pvc-test-1-pod-snap-1
spec:
containers:
- name: busybox
image: busybox
volumeMounts:
- name: mypvc
mountPath: /tmp
command: ['/bin/sh','-c','sleep 300d']
volumes:
- name: mypvc
persistentVolumeClaim:
claimName: rbd-pvc-test-1-snap-1-pvc
readOnly: false
EOF
# oc apply -f rbd-pvc-test-1-pod-snap-1.yaml
# oc rsh rbd-pvc-test-1-pod-snap-1
/ # cat /tmp/1
Before