Re: swapon command error
On 09.09.21 19:46, lin dimitri wrote:
I am trying to increase my swap memory, below is the commands I used:-
$ sudo swapon --show
$ sudo swapoff -a
$ sudo fallocate -l 4G /swapfile
$ sudo chmod 600 /swapfile
$ sudo mkswap /swapfile
$ sudo swapon /swapfile
swapon failed: Function not implemented
i got above error.
I have CONFIG_SWAP=y in /proc/config.gz.
i don't know how this can be solved
from mkswap man page:
Note that a swap file must not contain any holes. Using cp(1) to cre‐
ate the file is not acceptable. Neither is use of fallocate(1) on file
systems that support preallocated files, such as XFS or ext4, or on
copy-on-write filesystems like btrfs. It is recommended to use dd(1)
and /dev/zero in these cases. Please read notes from swapon(8) before
adding a swap file to copy-on-write filesystems.
--
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