Signed-off-by: Dan Aloni <dan.aloni@xxxxxxxxxxxx> --- utils/mount/nfs.man | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man index eab4692a87de..b5c5913bf315 100644 --- a/utils/mount/nfs.man +++ b/utils/mount/nfs.man @@ -618,6 +618,17 @@ option is not specified, the default behavior depends on the kernel version, but is usually equivalent to .BR "xprtsec=none" . +.TP 1.5i +.BI noalignwrite +This option disables the default behavior of extending buffered write operations +to full page boundaries. +.IP +Normally, the NFS client rounds non-aligned buffered writes up to the system +page size, which can lead to "lost writes" when multiple clients write +concurrently to distinct non-overlapping regions. Use this option when your +applications perform non-aligned buffered writes and you can guarantee that file +regions do not overlap, thus avoiding the need for file locking. +.IP .SS "Options for NFS versions 2 and 3 only" Use these options, along with the options in the above subsection, for NFS versions 2 and 3 only. -- 2.47.0
