1.\" $NetBSD: mount_nilfs.8,v 1.6 2022/05/24 20:50:17 andvar Exp $ 2.\" 3.\" Copyright (c) 2008, 2009 Reinoud Zandijk 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.\" <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>> 27.\" 28.Dd June 1, 2016 29.Dt MOUNT_NILFS 8 30.Os 31.Sh NAME 32.Nm mount_nilfs 33.Nd mount a NILFS file system 34.Sh SYNOPSIS 35.Nm 36.Op Fl c Ar checkpoint 37.Op Fl o Ar options 38.Op Fl t Ar gmtoff 39.Ar special 40.Ar node 41.Sh DESCRIPTION 42NILFS is a log-structured file system designed to support fast 43writing, fast recovery times, live snapshots, concurrent read-only 44snapshot mounts, and live file system resizing. 45Its inodes are managed using B-trees. 46.Pp 47The 48.Nm 49command attaches the NILFS file system residing on the specified 50.Ar special 51device node on the location indicated with 52.Ar node . 53.Pp 54.Bl -tag -width XXXoptions 55.It Fl c Ar checkpoint 56Select the checkpoint number 57.Ar checkpoint 58to be mounted instead of the default last one. 59.It Fl o Ar options 60Use the specified mount 61.Ar options 62as specified in 63.Xr mount 8 . 64.It Fl t Ar gmtoff 65Set the time zone offset (in seconds) from UTC to 66.Ar gmtoff , 67with positive values indicating east of the Prime Meridian. 68If not set, the user's current time zone will be used. 69.El 70.Sh SEE ALSO 71.Xr mount 2 , 72.Xr vnd 4 , 73.Xr fstab 5 , 74.Xr mount 8 , 75.Xr mount_lfs 8 , 76.Xr umount 8 , 77.Xr vnconfig 8 78.Sh HISTORY 79NILFS is a file system developed by NTT and released in 2005 for 80Linux. 81Version 2 is available since 2009. 82This cleanroom implementation was written by 83.An -nosplit 84.An Reinoud Zandijk 85for 86.Nx 87in 2009, and has first been released as part of 88.Nx 6 . 89.Sh AUTHORS 90This implementation of NILFS was written by 91.An Reinoud Zandijk . 92.Sh CAVEATS 93This implementation currently only supports read-only operation. 94See 95.Xr mount_lfs 8 96for an older log-structured file system with write support. 97Also see 98.Xr wapbl 4 99and 100.Xr mount 8 101for fast journal-based recovery using FFS. 102