Basic Steps after Creating a Datadisk
1. Check the partitions information of the target disk.
sudo fdisk -l # OR sudo parted -l
2. Partition a new disk
sudo parted /dev/sdc --script mklabel gpt mkpart xfspart xfs 0% 100% sudo mkfs.xfs /dev/sdc1 sudo partprobe /dev/sdc1
sdc with the correct option for the disk. Use the
partprobe utility to make sure the kernel is aware of the new partition and filesystem. Failure to use
partprobe can cause the
lslbk commands to not return the UUID for the new filesystem immediately.
We can also use the following commands to make an
sudo parted /dev/sdc --script mklabel msdos mkpart primary ext4 0% 100% sudo mkfs.ext4 /dev/sdc1 sudo partprobe /dev/sdc1
To see more discussions about xfs vs ext here: How to Choose Your Red Hat Enterprise Linux File System
3. Mount the disk
sudo mkdir /data sudo mount /dev/sdc1 /data
4. To remount the disk automatically
To ensure that the drive is remounted automatically after a reboot, it must be added to the
/etc/fstab file. It is also highly recommended that the UUID (Universally Unique Identifier) is used in
/etc/fstab to refer to the drive rather than just the device name (such as /dev/sdc1). If the OS detects a disk error during boot, using the UUID avoids the incorrect disk being mounted to a given location. Remaining data disks would then be assigned those same device IDs. To find the UUID of the new drive, use the
Next, edit the
/etc/fstab file and add the following line.
UUID=xxxxxxxx /data xfs/ext4 defaults,nofail 1 2