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en:services:server_services:gwdg_cloud_server:volumes_manual [2021/05/17 08:00]
ssadegh created
en:services:server_services:gwdg_cloud_server:volumes_manual [2021/05/20 13:19]
ssadegh [Manage an existing volume]
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 This manual provide a quick help on how to create, delete, attach and detach your volume using [[https://cloud.gwdg.de/horizon/project/volumes/| Volumes Dashboard]]. This manual provide a quick help on how to create, delete, attach and detach your volume using [[https://cloud.gwdg.de/horizon/project/volumes/| Volumes Dashboard]].
 +
 +===== Create a new volume =====
 +In GWDG horizon dashboard, you can create a volume (block storage) by following these steps:
 +
 +<WRAP Group> <WRAP column half> 1- From the left menu bar, select project->Volumes→Volumes and then click "Create Volume" </WRAP><WRAP column half>  {{ :en:services:server_services:gwdg_cloud_server:new:create_volume_button.png?direct&400 |}} </WRAP></WRAP>
 +
 +<WRAP Group> <WRAP column half> 2- Fill the displayed form with the following information:
 +
 +**Please do not use any character rather than standard alphanumeric!**
 +
 +  * Volume Name: Specify a name for the volume.
 +  * Description: Optionally, provide a brief description for the volume.
 +  * Volume Source: Select "No source, empty volume" unless you want to create the volume as a copy of an existing volume or image.
 +  * Type: Select "ssd" for a faster SSD-based storage or "standard" for a normal HDD-based storage.
 +  * Size (GiB): The size of the volume in gibibytes.
 +  * Availability Zone: Leave it with default value "nova".
 +
 +3- Click "Create Volume" and wait until the status of the volume is "Available".
 +
 + </WRAP><WRAP column half> {{ :en:services:server_services:gwdg_cloud_server:new:create_volume_form.png?direct&400 |}} </WRAP></WRAP> 
 +
 +
 +===== Manage an existing volume =====
 +<WRAP Group> <WRAP column half> There are several actions which can be applied on a volume. You can see the list of them by clicking the small arrow on the very right of each volume row. The most useful ones are described as follow.
 +
 +The volume which is not attached and has no related snapshot can be deleted by **Delete Volume** .
 +
 +The size of the volume which is not attached can be increased by **Extend Volume** .
 +
 +The volume which is not attached can be transferred to another project by **Create Transfer** . The necessary quota in destination project should be met. The provided "Transfer ID" and "Authorization Key" should be given to receiver, to be used for accepting the transfer.
 +
 +</WRAP><WRAP column half> {{ :en:services:server_services:gwdg_cloud_server:new:volume_manage_list.png?direct&200 |}} </WRAP></WRAP>
 +<WRAP Group> <WRAP column half> To attach or detach a Volume to or from an instance, the **Manage Attachments** option should be used. 
 +</WRAP><WRAP column half>  </WRAP></WRAP>
 +
 +<WRAP Group> <WRAP column half>
 +To attach a volume to a running instance, the following steps should be fulfilled:
 +
 +  * Select "Manage Attachment" of a volume with "Available" status.
 +  * On displayed form, select the intended instance from the "Attach to Instance" list.
 +  * You can optionally change the device name.
 +  * Click "Attach Volume".
 +  * Connect to your instance and run "//sudo fdisk -l//" to verify if the volume is attached.
 +  * If the volume is new (has not been attached to another instance before) you will see a message in the output of previous command indicating that the disk doesn't contain a valid partition table.
 +  * To format your device, execute: "//sudo mkfs -t ext3  /dev/vdc//"  (/dev/vdc should be replaced by your device name if it is different)
 +  * Create a directory for mounting the new storage volume: "//sudo mkdir /mnt/my-volume//".
 +  * Mount the new volume: "//sudo mount /dev/vdc /mnt/data-store//"
 +
 +</WRAP><WRAP column half> {{ :en:services:server_services:gwdg_cloud_server:new:volume_attach.png?direct&400 |}} </WRAP></WRAP>
 +
 +<WRAP Group> <WRAP column half>
 +To detach a volume from an instance, the following steps should be fulfilled:
 +
 +  * Select "Manage Attachment" of a volume with "In-use" status.
 +  * Click "Detach Volume" of intended instance.
 +  * Confirm displayed message.
 +
 +</WRAP><WRAP column half> {{ :en:services:server_services:gwdg_cloud_server:new:volume_detach.png?direct&400 |}} </WRAP></WRAP>
 +