Extend filesystem in Linux

Verify free space in volume group.

# vgdisplay appvg

Extend the filesystem with 50Gb of space

# lvextend -L +50G /dev/mapper/appvg-backup

Resize the filesystem to expand the actual size online and verify.

# resize2fs /dev/mapper/appvg-backup
# df -kh /dev/mapper/appvg-backup

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