6.14.3 Increasing the Size of the /u01 File System

This procedure describes how to increase the size of the /u01 file system in Oracle Linux KVM.

This procedure is performed while the file system remains online.

Note:

Keep at least 1 GB of free space in the VGExaDb volume group. The free space is used for the LVM snapshot created by the dbnodeupdate.sh utility during software maintenance. If you make snapshot-based backups of the / (root) and /u01 directories as described in Creating a Snapshot-Based Backup of Oracle Linux Database Server, then keep at least 6 GB of free space in the VGExaDb volume group

This task assumes that additional disk space is available to be used. If that is not the case, then complete the task Adding a New LVM Disk to a Guest before starting this procedure.

1. Collect information about the current environment.
   1. Use the df command to identify the amount of free and used space in the /u01 partition.

      # df -h /u01
      

      The following is an example of the output from the command:

      Filesystem            Size  Used Avail Use% Mounted on
      /dev/mapper/VGExaDb-LVDbOra1
                            9.9G  1.7G  7.8G  18% /u01
      

   2. Use the lvs command to display the current logical volume configuration used by the /u01 file system.

      # lvs -o lv_name,lv_path,vg_name,lv_size /dev/VGExaDb/LVDbOra1
      

      The following is an example of the output from the command:

      LV        Path                  VG       LSize 
      LVDbOra1 /dev/VGExaDb/LVDbOra1  VGExaDb 10.00g
      

2. Verify there is available space in the volume group VGExaDb using the vgdisplay command.

   # vgdisplay VGExaDb -s
   

   The following is an example of the output from the command:

   "VGExaDb" 53.49 GiB [42.00 GiB used / 11.49 GiB free]
   

   If the output shows there is less than 1 GB of free space, then neither the logical volume nor file system should be extended. Maintain at least 1 GB of free space in the VGExaDb volume group for the LVM snapshot created by the dbnodeupdate.sh utility during an upgrade. If there is not sufficient free space in the volume group, then add a new disk to LVM.

3. Resize the logical volume using the lvextend command.

   # lvextend -L +sizeG /dev/VGExaDb/LVDbOra1
   

   In the preceding command, size is the amount of space to be added to the logical volume.

   The following example extends the logical volume by 10 GB:

   # lvextend -L +10G /dev/VGExaDb/LVDbOra1
   

4. Resize the partition using the xfs_growfs command.

   # xfs_growfs /u01
   

5. Verify the space was extended using the df command.

   # df -h /u01