74 lines
2.6 KiB
Groff
74 lines
2.6 KiB
Groff
'\" t
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.\" Title: rofiles-fuse
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.\" Author: Colin Walters <walters@verbum.org>
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.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
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.\" Date: 06/19/2017
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.\" Manual: rofiles-fuse
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.\" Source: rofiles-fuse
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.\" Language: English
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.\"
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.TH "ROFILES\-FUSE" "1" "" "rofiles-fuse" "rofiles-fuse"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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rofiles-fuse \- Use FUSE to create a view where directories are writable, files are immutable
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.SH "SYNOPSIS"
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.HP \w'\fBrofiles\-fuse\ SRCDIR\ MNTPOINT\fR\ 'u
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\fBrofiles\-fuse SRCDIR MNTPOINT\fR
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.SH "DESCRIPTION"
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.PP
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Creating a checkout from an OSTree repository by default uses hard links, which means an in\-place mutation to any file corrupts the repository and all checkouts\&. This can be problematic if one wishes to run arbitrary programs against such a checkout\&. For example, RPM
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%post
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scripts or equivalent\&.
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.PP
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In the case where one wants to create a tree commit derived from other content, using
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\fBrofiles\-fuse\fR
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in concert with
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\fBostree commit \-\-link\-checkout\-speedup\fR
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(or the underlying API) can ensure that only new files are checksummed\&.
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.SH "EXAMPLE: UPDATE AN OSTREE COMMIT"
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.sp
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.if n \{\
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.RS 4
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.\}
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.nf
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# Initialize a checkout and mount
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$ ostree \-\-repo=repo checkout somebranch branch\-checkout
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$ mkdir mnt
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$ rofiles\-fuse branch\-checkout mnt
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# Now, arbitrary changes to mnt/ are reflected in branch\-checkout
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$ echo somenewcontent > mnt/anewfile
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$ mkdir mnt/anewdir
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$ rm mnt/someoriginalcontent \-rf
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# Commit and cleanup
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$ fusermount \-u mnt
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$ ostree \-\-repo=repo commit \-\-link\-checkout\-speedup \-b somebranch \-s \*(AqCommit new content\*(Aq \-\-tree=dir=branch\-checkout
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$ rm mnt branch\-checkout \-rf
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.fi
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.if n \{\
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.RE
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.\}
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.SH "SEE ALSO"
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.PP
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\fBostree\fR(1)
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