Extending a logical volume on linux

The following steps describe the procedure for extending a logical volume on linux.

1. Most of our disk servers use LVM to partition data disks. To extend a filesystem on top of a logical volume, you must first extend the logical volume of that filesystem. For example, the following command would extend the /dev/vg1/test1 logical volume by 50GB . Note that this may be done while the logical volume is active and mounted, and there must be 50G free in the /dev/vg1 volume group.
   • lvextend -L +50G /dev/vg1/test1

The following steps describe the procedure for extending an XFS filesystem on linux. Note that the filesystem must be mounted during the operation.

1. Most of our disk servers use LVM to partition data disks. To extend an XFS filesystem on top of a logical volume, you must first extend the logical volume of that filesystem. For example, the following command would extend the /dev/vg1/test1 logical volume by 50GB . Note that this may be done while the logical volume is active and mounted, and there must be 50G free in the /dev/vg1 volume group.
   • lvextend -L +50G /dev/vg1/test1
2. After extending the underlying physical device (the logical volume) you then extend the XFS filesystem. The following command will extend the filesystem mounted at /mnt/test1 to the size of its underlying physical volume. For example, after extending /dev/vg1/test1 by 50G, the following command will extend the filesystem on /dev/vg1/test1 (which is mounted at /mnt/test1) by 50G.
   • xfs_growfs /mnt/test1