Add extra SWAP in Linux

By | November 7, 2008

If, by any chance, you happen to run out of SWAP space in Linux and you desperately need it, you can use a temporary file to supplement:

dd if=/dev/zero of=/swap1.swp bs=1024 count=512K

mkswap /swaptemp.swp

swapon /swaptemp.swp

Now verify if the image file was successfully mounted:

cat /proc/swaps

2 thoughts on “Add extra SWAP in Linux

  1. Oleg

    For novice not evident, that ‘bs=1024’ and ‘count=512K’ are not mandatory and what whis do swap file 500M.
    I’m think, article need be more verbose.
    Again, ‘bs’ = ‘block size’ and ‘count’ = ‘count’. His values must be exchanged, so:

    [code]dd if=/dev/zero of=/swapfile bs= count=[/code]

    P.S. Do your site have BBCode’s? 🙂
    P.P.S. Advise make up notations of convention.

  2. Oleg

    Hm… Site cute the < / >
    [code]dd if=/dev/zero of=/swapfile bs=<block_size> count=<blocks_count>[/code]


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