ROFILES-FUSE(1) rofiles-fuse ROFILES-FUSE(1)
NAME
rofiles-fuse - Use FUSE to create a view where directories are
writable, files are immutable
SYNOPSIS
rofiles-fuse SRCDIR MNTPOINT
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)
rofiles-fuse ROFILES-FUSE(1)
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