Snapshot

Available in Classic

You can create a snapshot to save the storage data, and create storage after replicating a snapshot from the Region where it is created to another Region. Also, if you create new storage in a server using the created snapshot, you can recover the saved data.

Check snapshot information

Describes the Snapshot interface configuration and how to view snapshot information.

Snapshot interface

From the NAVER Cloud Platform portal, navigate to Console > > Services > Compute > Server > Snapshot to view the Snapshot interface.

The Snapshot interface includes the following components:

Create snapshot

You can create full storage snapshots that save all data within the storage as of the time the snapshot is created.
To create a snapshot:

1. In the Classic environment of the NAVER Cloud Platform console, navigate to > Services > Compute > Server.
2. Click the Storage menu.
3. From the storage list, click to select the storage you want to create a snapshot of, and then click Create snapshot.
4. From the Create snapshot popup, enter the information of the snapshot to be created, and then click [Next].
   • Snapshot name: Must be 3-30 characters long and begin with a letter. They must contain uppercase and lowercase letters, numbers, hyphens, and/or underscores.
5. After checking the settings, click [Create].
6. In the popup, review the details and click [OK].
   • The snapshot is created and displayed in the list.

Create storage with snapshot

You can create storages by using snapshots to recover saved data.
For more information about how to create the storage with snapshots and how to configure the server by OS, see the following guides:

• 1. Create storage on console.
• 2. Set server (Linux/Windows).

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1. Create storage on console

First, use a snapshot to create storage from the console.
To create the storage using a snapshot:

1. In the Classic environment of the NAVER Cloud Platform console, navigate to > Services > Compute > Server.
2. Click the Snapshot menu.
3. On the snapshot list, select the snapshot you want to create storage with, and click [Create storage].
4. From the Create storage popup, set the information of the storage to be created, and click [Create].
   • Snapshot name: The name of the snapshot you want to create storage for.
   • Storage volume type: Select the type you want according to the purpose of use.
     • Select SSD for high-performance I/O and HDD for general services.
   • Storage name: Must be 3-30 characters long and begin with a letter. They must contain uppercase and lowercase letters, numbers, hyphens, and/or underscores.
     • If you don't enter anything, the storage name is automatically created.
   • Zone: Select the zone to place the storage.
   • Select server: Select the server to which you want to connect the storage.
   • Size and Max IOPS values are automatically applied and cannot be changed.
   • Memo: Enter a description of the storage to be created.
5. Review the settings and click [OK].
   • Storage is created. You can check the created storage from the Storage menu.

2. Set server (Linux)

To add the storage created by the snapshot to the Linux server, proceed with the following steps in order:

1. Check storage identifier and file system type.
2. Change storage identifier.
3. Mount storage.

1. Check storage identifier and file system type

Check storage identifier and file system type.

1. Access the Linux server to which the storage is connected.
   • For more information about how to access the server, see Access Linux server.
2. Check the storage identifier and file system type created by the snapshot through the blkid command.
   • The storage identifier is displayed as the UUID value.
   • The file system type is displayed as the TYPE value. .
3. According to the result of Step 2, proceed with the following steps:
   • If you have duplicated storage identifiers, proceed with 3. Change storage identifier.
   • If the identifiers of each storage are all different, proceed with 4. Mount storage.

2. Change storage identifier

If the identifier of the storage in the original server is the same as the identifier of the created storage, the storage cannot be mounted in the following cases:

• Creating a snapshot in one of the existing storages of the server to which storages were added
• Creating a snapshot from the basic boot storage of another server

If applicable, you need to first change the identifier of the created storage.
1. Check storage identifier and file system type, proceed with the task according to the file system type checked in it.

• xfs file system type
• ext4 file system type

xfs file system type

To change the identifier of a storage using the xfs file system: The description is based on the xvdb1 storage.

1. Enter the xfs_repair -L /dev/xvdb1 command.
   • The storage identifier of xvdb1 is deleted.
2. Enter the xfs_admin -U generate /dev/xvdb1 command.
   • A new identifier is created for the xvdb1 storage.
3. Check if it is changed into a new identifier by the blkid command.

ext4 file system type
To change the identifier of a storage using the ext4 file system: The description is based on the xvdb1 storage.

1. Enter the tune2fs -U "UUID" /dev/xvdb1 or tune2fs -U random /dev/xvdb1 command.
   • Enter the desired storage identifier into the "UUID" location and run it.
   • The random option sets the UUID as a random value.

2. Check if it is changed into a new identifier by the blkid command.
   The following errors may occur if the UUID is changed with the tune2fs command after creating and allocating a snapshot and storage while operating the server for the basic boot storage of the ext4 file system type.

   Note

   For the booting disk, create the snapshot when the server is stopped to prevent data loss issues.

   # tune2fs /dev/xvdb1 -U random
   This operation requires a freshly checked filesystem.
   Please run e2fsck -f on the filesystem.
   

   Perform the following procedures in the relevant cases:

   1. Check storage device status

   # file -s /dev/xvdb1
   

   Check if the phrase "needs journal recovery" is output in the command execution result value. If the phrase is output, it means that the file system is damaged. Conduct the file system inspection and recovery with the following commands:

   2. Conduct the file system inspection and recovery

   # e2fsck -f /dev/xvdb1 -y
   

   3. Conduct the storage identifier change task

   # tune2fs /dev/xvdb1 -U random
   

3. Mount storage

See Mount storage to mount the created storage.

2. Set server (Windows)

To add the storage created by the snapshot to the Windows server, set the storage status to online.
To set the storage status online on the Windows server:

1. Access the Windows server to which the storage is connected.
   • For more information about how to access the server, see Access Windows server.
2. After clicking , navigate to Windows Administrative Tools > Computer Management > Disk Management.
   • Alternatively, you can enter diskmgmt.msc on the run command window.
3. Find the disk marked with Offline from the disk list, right-click the button, and click Online.
   • You can now use the storage.

Replicate snapshot

To replicate the created snapshot to another Region:

1. In the Classic environment of the NAVER Cloud Platform console, navigate to > Services > Compute > Server.
2. Click the Snapshot menu.
3. From the snapshot list, click to select the snapshot to replicate, and then click [Replicate to another Region].
4. From the Replicate to another Region popup, select the Region you want to replicate the snapshot to, enter the snapshot name, and then click [Create].
5. In the popup, review the details and click [OK].
   • It may take several minutes to several hours to replicate a snapshot depending on the size of the snapshot you want to replicate.
   • You can't cancel replication or delete the snapshot that is being replicated until the replication is completed.

Delete snapshot

To delete the created snapshot:

1. In the Classic environment of the NAVER Cloud Platform console, navigate to > Services > Compute > Server.
2. Click the Snapshot menu.
3. Click to select the snapshot to delete from the snapshot list, and click [Delete snapshot].
4. In the confirmation popup, review the details and click [Yes].
   • The snapshot is deleted and disappears from the list.