rofiles-fuse.1

ROFILES−FUSE

NAME
SYNOPSIS
DESCRIPTION
EXAMPLE: UPDATE AN OSTREE COMMIT
SEE ALSO

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NAME

rofiles-fuse − Use FUSE to create a view where directories are writable, files are immutable

SYNOPSIS

DESCRIPTION

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 %post scripts or equivalent.

In the case where one wants to create a tree commit derived from other content, using rofiles−fuse in concert with ostree commit −−link−checkout−speedup (or the underlying API) can ensure that only new files are checksummed.

EXAMPLE: UPDATE AN OSTREE COMMIT

Initialize a checkout and mount

$ ostree −−repo=repo checkout somebranch branch−checkout
$ mkdir mnt
$ rofiles−fuse branch−checkout mnt

Now, arbitrary changes to mnt/ are reflected in branch−checkout

$ echo somenewcontent > mnt/anewfile
$ mkdir mnt/anewdir
$ rm mnt/someoriginalcontent −rf

Commit and cleanup

$ fusermount −u mnt
$ ostree −−repo=repo commit −−link−checkout−speedup −b somebranch −s ‘Commit new content’ −−tree=dir=branch−checkout
$ rm mnt branch−checkout −rf

SEE ALSO

ostree(1)

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