e2freefrag

Print the free space fragmentation information for ext2/ext3/ext4 filesystems.

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• Check how many free blocks are present as contiguous and aligned free space:

e2freefrag {/dev/sdXN}

• Specify chunk size in kilobytes to print how many free chunks are available:

e2freefrag -c {chunk_size_in_kb} {/dev/sdXN}

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