Extending a Non-root LVM Partition

2.9.2.1 Extending a Non-root LVM Partition

Note:

This procedure does not require an outage on the server.

The instructions and examples in this procedure are based on the partition supporting /u01.

Collect information about the current environment.

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   99G   25G  70G   26% /u01
```

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

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

 LV        Path                   VG      LSize
 LVDbOra1  /dev/VGExaDb/LVDbOra1  VGExaDb 100.00G
 LVDbSwap1 /dev/VGExaDb/LVDbSwap1 VGExaDb  24.00G
 LVDbSys1  /dev/VGExaDb/LVDbSys1  VGExaDb  30.00G
 LVDbSys2  /dev/VGExaDb/LVDbSys2  VGExaDb  30.00G

Use the df command to identify the file system type that is used in the /u01 partition.
```
# df -hT /u01
```
The following is an example of the output from the command:
```
Filesystem                    Type  Size  Used Avail Use% Mounted on
/dev/mapper/VGExaDb-LVDbOra1   xfs   99G   25G  70G   26% /u01
```
In this example, the file system type is xfs.
If the file system type is not xfs, use the following tune2fs command to check the online resize option. If the file system type is xfs, then you can skip this step.
```
tune2fs -l /dev/mapper/vg_name | grep resize_inode
```
The resize_inode option should be listed in the output from the command. If the option is not listed, then the file system must be unmounted before resizing the partition.
Verify there is available space in the volume group VGExaDb using the vgdisplay command.
```
# vgdisplay -s
```
The following is an example of the output from the command:
```
"VGExaDb" 834.89 GB [184.00 GB used / 650.89 GB 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 enough free space, then verify that the reclaimdisks.sh utility has been run. If the utility has not been run, then use the following command to reclaim disk space:
```
# /opt/oracle.SupportTools/reclaimdisks.sh -free -reclaim 
```
If the utility has been run and there is not enough free space, then the LVM cannot be resized.
Note:
- reclaimdisks.sh cannot run at the same time as a RAID rebuild (that is, a disk replacement or expansion). Wait until the RAID rebuild is complete, then run reclaimdisks.sh.
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
```
Resize the file system within the logical volume.
- For ext3 and ext4 file system types, use the resize2fs command:
```
# resize2fs /dev/VGExaDb/LVDbOra1
```
- For the xfs file system type, use the xfs_growfs command:
```
# xfs_growfs /u01
```
Verify the space was extended using the df command
```
# df -h /u01
```

Parent topic: Resizing a Non-root LVM Partition