swap.rst
author Oleksandr Gavenko <gavenkoa@gmail.com>
Thu, 29 May 2025 22:47:01 +0300
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permissions -rw-r--r--
Check swap status.
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.. -*- coding: utf-8; -*-
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======
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 Swap
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======
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.. contents::
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   :local:
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Check swap status
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=================
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::
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  free
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  cat /proc/swaps
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  sudo swapon --show
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Enable swap in file
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===================
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Create a large file::
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  sudo fallocate -l 1G /swapfile
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  sudo dd if=/dev/zero of=/swapfile bs=1024 count=524288
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with proper permissions::
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  sudo chown root:root /swapfile
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  sudo chmod 600 /swapfile
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enable file for paging and swapping::
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  mkswap /swapfile
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  sudo swapon /swapfile
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  sync
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Insure that all fine::
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  $ dmesg | tail
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  ...
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  $ cat /proc/swaps
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   ...
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Add line to /etc/fstab::
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  /swapfile   swap        swap    defaults    0   0
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