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For more details, please refer to the GCP documentation
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Creating a New Volume
Please note: You can also create a new disk from the Edit VM function. The present example shows how to create a new disk in the disk section.
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Steps on the Charon-SSP Host System
Mounting a Newly Attached Volume Using the Storage Manager (
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AL images only)
After the volume has been attached to the instance, it must be included in the Charon-SSP host system configuration. This On Charon-SSP AL instances, this is achieved via the Charon-SSP Manager.
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Mounting a Newly Attached Volume Manually
This is an example of how to mount (and if necessary format) an additional disk on the Charon host system. Please refer to the Linux manual pages for details.
The general tasks on the Charon host system require to identify the disk, add a file system to it (if this has not been done before), and mount the disk under a suitable mount-point.
Step 1: Identify new disk
After logging in on the system, you can identify the new disk using the lsblk command:
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# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 200M 0 part /boot/efi
└─sda2 8:2 0 19,8G 0 part /
sdb 8:16 0 200G 0 disk |
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Step 2: Partition disk (fdisk or parted)
Please note: This step is only required for new disks. It will delete all data on an existing disk.
Please refer to the manual pages of your Linux distribution for details on the disk-partitioning commands.
After creating one partition on disk with fdisk (fdisk /dev/sdb), the lsblk output shows the new partition:
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# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 30G 0 disk
├─sda1 8:1 0 500M 0 part /boot
└─sda2 8:2 0 29,5G 0 part /
sdb 8:32 0 64G 0 disk
└─sdb1 8:33 0 64G 0 part
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Step3: Create a filesystem on the new partition(s)
Use the mkfs command to create a new filesystem. For example, to create an XFS filesystem, use
# mkfs.xfs /dev/sdb1
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Step 4: Create a mount-point and mount the new filesystem
The following example shows how to create a mount-point and mount the file system. Please note that this is just a basic example. As the /dev/sdX device names are not guaranteed to be persistent, it is better to use names from the /dev/disk/by-* hierarchy (for example by-uuid) for permanent use.
# mkdir /space
# mount /dev/sdb1 /space
The df command shows the mounted filesystem:
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# df
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 4065684 0 4065684 0% /dev
tmpfs 4077556 16 4077540 1% /dev/shm
tmpfs 4077556 9224 4068332 1% /run
tmpfs 4077556 0 4077556 0% /sys/fs/cgroup
/dev/sda2 30929148 1677416 29251732 6% /
/dev/sda1 508580 65512 443068 13% /boot
tmpfs 815512 0 815512 0% /run/user/1000
/dev/sdb1 65923628 53272 62498580 1% /space |
Please note: To mount the filesystem at boot, add it to /etc/fstab.
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Unmounting a Volume
To unmount a volume before perform the following steps:
- Stop all Charon instances that might use the volume that is about to be unmounted.
- On host systems based on Marketplace AL images:
- in Charon Manager go to Tools > Google Cloud > Storage Manager.
- Select the volume.
- Click on the cogwheel symbol and select Unmount the Filesystem.
- On other systems:
- Use the command
# umount <device-path>
or# umount <mount-point>
- To make this permanent, remove the corresponding entry in /etc/fstab.
- Use the command
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