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Creating Data Drives

Create a data directory to store Percona data files.

Method 1: Using fdisk to Create a Data Drive

  1. Create a partition. /dev/nvme0n1 is used as an example. Create a partition based on your actual requirements.
    1
    		 
    fdisk /dev/nvme0n1
  2. Type p (print the partition table) and press Enter to display the current partition.
  3. Type n (add a new partition) and press Enter.
  4. Type p (create a primary partition) and press Enter.
  5. Type 1 (set the partition number to 1) and press Enter.
  6. Press Enter to retain the default setting for the first partition.
  7. Press Enter to retain the default setting for the last partition.
  8. Type p (print the partition table) and press Enter to display the current partition.

  9. Type w to save the latest partition table and press Enter.
  10. Create a file system, for example, xfs.
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    ls /dev/nvme*
mkfs.xfs -f /dev/nvme0n1p1
  11. Mount the partition to /data of the OS.
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    mkdir /data
mount /dev/nvme0n1p1 /data
  12. Edit /etc/fstab to enable the data drive to be automatically mounted after the OS is restarted.
    1. Open /etc/fstab.
      vim /etc/fstab
    2. Press i to enter the insert mode and add the line to the end of the file.

      In the last line, /dev/sdb1 is only an example.

    3. Press Esc, type :wq!, and press Enter to save the file and exit.

Method 2: Using LVM to Create a Data Drive

  1. Install LVM2 in the image.

    To configure the yum source, see Configuring the Yum Source.

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    yum -y install lvm2
  2. Create a physical volume, for example, sdb. Change it based on your actual requirements.
    1
    		 
    pvcreate /dev/sdb
  3. Create a physical volume group, for example, datavg. Change it based on your actual requirements.
    1
    		 
    vgcreate datavg /dev/sdb
  4. Create a logical volume, for example, datalv of 600 GB. Change the name and size based on your actual requirements.
    1
    		 
    lvcreate -L 600G -n datalv datavg
  5. Create a file system.
    1
    		 
    mkfs.xfs /dev/datavg/datalv
  6. Create a data directory and mount it.
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    mkdir /data
mount /dev/datavg/datalv /data
  7. Edit /etc/fstab to enable the data drive to be automatically mounted after the OS is restarted.
    1. Open /etc/fstab.
      vim /etc/fstab
    2. Press i to enter the insert mode and add the line to the end of the file.

      In the last line, /dev/datavg/datalv is only an example.

    3. Press Esc, type :wq!, and press Enter to save the file and exit.