Why is only 11 GB used of my 12 GB swap file ?

[Sreyan Chakravarty <sreyan32@xxxxxxxxx>]

Hi,

I have created my swap file using the command:

          dd if=/dev/zero of=/fedora.swap bs=1M count=12288 status=progress

So this should produce a 12 GB file right ?

I can confirm it does:

$  ls -lh /fedora.swap
-rw-------. 1 root root 12G Nov 27 20:23 /fedora.swap

So why is the swap memory in my system reported as 11 GB by the free command  ?

$  free -h

                           total        used        free      shared  buff/cache   available

Mem:          7.7Gi       1.4Gi       4.5Gi       394Mi       1.8Gi       5.6Gi
Swap:          11Gi          0B        11Gi

Why is it 11 GB ? Shouldn't it be 12 GB ?

Am I missing something?

What is the reason for this?

--

Regards,

Sreyan Chakravarty

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