diff options
Diffstat (limited to 'sys-utils/swapon.8')
| -rw-r--r-- | sys-utils/swapon.8 | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys-utils/swapon.8 b/sys-utils/swapon.8 index 60e4d4feb..d645850bb 100644 --- a/sys-utils/swapon.8 +++ b/sys-utils/swapon.8 @@ -207,9 +207,10 @@ The most portable solution to create a swap file is to use .BR dd (1) and /dev/zero in these cases. .SS Btrfs -The swap files on btrfs are supported since Linux 5.0. The previous versions use -copy-on-write semantic for the swap files, it means that the file location is may not be static -and corruption can result. +The swap files on btrfs are supported since Linux 5.0 on files with nocow and +nodatasum attributes and without compression. The previous versions may use +copy-on-write semantic for the swap files, it means that the file location is +may not be static and corruption can result. .sp One possible workaround is to map the swap file to a loopback device. This will allow the filesystem to determine the mapping properly but may come with a performance impact. |