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5.3. Resizing an ext4 File System
Before growing an ext4 file system, ensure that the underlying block device is of an appropriate size to hold the file system later. Use the appropriate resizing methods for the affected block device.
An ext4 file system may be grown while mounted using the
resize2fs command:
#resize2fs /mount/device size
The
resize2fs command can also decrease the size of an unmounted ext4 file system:
#resize2fs /dev/device size
When resizing an ext4 file system, the
resize2fs utility reads the size in units of file system block size, unless a suffix indicating a specific unit is used. The following suffixes indicate specific units:
s— 512 byte sectorsK— kilobytesM— megabytesG— gigabytes
Note
The size parameter is optional (and often redundant) when expanding. The
resize2fs automatically expands to fill all available space of the container, usually a logical volume or partition.
For more information about resizing an ext4 file system, refer to
man resize2fs.
