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8.4 Snapshot for backup
You can create a Snapshot of the File System based on the time it was executed. You can recover files or all of them from the created Snapshot.
Snapshot #1
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Connect to the tested VM.
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Copy one file to the mounted file system.
[opc@examplelinuxinstance ~]$ cd /mnt/FSS-Storage/ [opc@examplelinuxinstance FSS-Storage]$wget https://github.com/oracle/oci-cli/releases/download/v3.4.2/oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip ... 2022-01-14 06:04:59 (6.24 MB/s) - ‘oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip’ saved [42528311/42528311] [opc@examplelinuxinstance FSS-Storage]$ ls -la total 43025 drwxrwxrwx. 2 root root 3 Jan 14 06:04 . drwxr-xr-x. 3 root root 25 Jan 14 01:59 .. drwxrwxrwx. 2 root root 0 Jan 14 06:05 .snapshot -rw-r--r--. 1 root root 19 Jan 14 02:18 hello1.txt -rw-rw-r--. 1 opc opc 19 Jan 14 05:50 hello2.txt -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:38 oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip -
Go to the OCI Console in the web browser and go to the detailed screen of the file system created earlier.
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Go to Resources > Snapshots in the lower left.
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Click Create Snapshot to create a Snapshot.
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Snapshot creation screen
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Confirm creation
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Check in Compute Instance
Snapshots and files created in the .snapshot folder just below the mounted path are displayed.
[opc@examplelinuxinstance FSS-Storage]$ ls -la .snapshot/ total 2 drwxrwxrwx. 3 root root 1 Jan 14 06:16 . drwxrwxrwx. 2 root root 3 Jan 14 06:04 .. drwxrwxrwx. 2 root root 3 Jan 14 06:04 Snapshot-20220114-0614-39 [opc@examplelinuxinstance FSS-Storage]$ ls -la .snapshot/Snapshot-20220114-0614-39/ total 43025 drwxrwxrwx. 2 root root 3 Jan 14 06:04 . drwxrwxrwx. 3 root root 1 Jan 14 06:17 .. -rw-r--r--. 1 root root 19 Jan 14 02:18 hello1.txt -rw-rw-r--. 1 opc opc 19 Jan 14 05:50 hello2.txt -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:38 oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip
Snapshot #2
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Copy one more file to the mounted file system from the connected Compute Instance.
[opc@examplelinuxinstance FSS-Storage]$ wget https://github.com/oracle/oci-cli/releases/download/v3.4.2/oci-cli-3.4.2-Oracle-Linux-8-Offline.zip ... 2022-01-14 06:18:36 (4.57 MB/s) - ‘oci-cli-3.4.2-Oracle-Linux-8-Offline.zip’ saved [42528311/42528311] [opc@examplelinuxinstance FSS-Storage]$ ls -la total 86033 drwxrwxrwx. 2 root root 4 Jan 14 06:18 . drwxr-xr-x. 3 root root 25 Jan 14 01:59 .. drwxrwxrwx. 3 root root 1 Jan 14 06:18 .snapshot -rw-r--r--. 1 root root 19 Jan 14 02:18 hello1.txt -rw-rw-r--. 1 opc opc 19 Jan 14 05:50 hello2.txt -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:38 oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:39 oci-cli-3.4.2-Oracle-Linux-8-Offline.zip -
Go to the OCI Console in your web browser and create another snapshot.
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Confirm creation of the second snapshot
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Check on Compute Instance
You can see the snapshots and files created in the .snapshot folder.
[opc@examplelinuxinstance FSS-Storage]$ ls -la .snapshot/ total 2 drwxrwxrwx. 4 root root 2 Jan 14 06:21 . drwxrwxrwx. 2 root root 4 Jan 14 06:18 .. drwxrwxrwx. 2 root root 3 Jan 14 06:04 Snapshot-20220114-0614-39 drwxrwxrwx. 2 root root 4 Jan 14 06:18 Snapshot-20220114-0620-02 [opc@examplelinuxinstance FSS-Storage]$ ls -ls .snapshot/Snapshot-20220114-0614-39/ total 43024 8 -rw-r--r--. 1 root root 19 Jan 14 02:18 hello1.txt 8 -rw-rw-r--. 1 opc opc 19 Jan 14 05:50 hello2.txt 43008 -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:38 oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip [opc@examplelinuxinstance FSS-Storage]$ ls -ls .snapshot/Snapshot-20220114-0620-02/ total 86032 8 -rw-r--r--. 1 root root 19 Jan 14 02:18 hello1.txt 8 -rw-rw-r--. 1 opc opc 19 Jan 14 05:50 hello2.txt 43008 -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:38 oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip 43008 -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:39 oci-cli-3.4.2-Oracle-Linux-8-Offline.zip -
Snapshots are read-only folders that can be recovered by making a full copy of the files in the Snapshot or a specific Snapshot.
[opc@examplelinuxinstance FSS-Storage]$ cd .snapshot/Snapshot-20220114-0620-02/ [opc@examplelinuxinstance Snapshot-20220114-0620-02]$ ls -la total 86033 drwxrwxrwx. 2 root root 4 Jan 14 06:18 . drwxrwxrwx. 4 root root 2 Jan 14 06:22 .. -rw-r--r--. 1 root root 19 Jan 14 02:18 hello1.txt -rw-rw-r--. 1 opc opc 19 Jan 14 05:50 hello2.txt -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:38 oci-cli-3.4.2-Oracle-Linux-7.9-Offline.zip -rw-rw-r--. 1 opc opc 42528311 Jan 13 16:39 oci-cli-3.4.2-Oracle-Linux-8-Offline.zip [opc@examplelinuxinstance Snapshot-20220114-0620-02]$ rm -rf oci-cli-3.4.2-Oracle-Linux-8-Offline.zip rm: cannot remove ‘oci-cli-3.4.2-Oracle-Linux-8-Offline.zip’: Read-only file system
As an individual, this article was written with my personal time. There may be errors in the content of the article, and the opinions in the article are personal opinions.