+ # Now, we generate a utility that changes a config file, and *requires*

+ # that that change was made.  (Unlike sed)

+ cat >/tmp/assert-sed <<EOF

+ #!/usr/bin/python

+ import os,sys,re

+ pattern = sys.argv[1]

+ replacement = sys.argv[2]

+ filepath = sys.argv[3]

+ newfilepath = filepath + '.new'

+ r = re.compile(pattern)

+ nmatches = 0

+ with open(filepath) as fin:

+     with open(newfilepath, 'w') as fout:

+         for line in fin:

+             (newline, this_nmatches) = r.subn(replacement, line)

+ 	    nmatches += this_nmatches

+ 	    fout.write(newline)

+ if nmatches == 0:

+     sys.stderr.write('Failed to find pattern {} in {}\n'.format(pattern, filepath))	    

+     os.unlink(newfilepath)

+     sys.exit(1)

+ os.rename(newfilepath, filepath)

+ EOF

+ chmod a+x /tmp/assert-sed

+ assert-sed() {

+     /tmp/assert-sed "$@"

+ }

+ 

+ # Work around https://bugzilla.redhat.com/show_bug.cgi?id=1365297

+ cat >/usr/lib/tmpfiles.d/ostree-lvm.conf<<EOF

+ d /var/lib/lvm 0755 0 0 - -

+ d /var/lib/lvm/backup 0755 0 0 - -

+ d /var/lib/lvm/archive 0755 0 0 - -

+ EOF

+ assert-sed '^(\s*backup_dir\s*=)(.*)' '\1 "/var/lib/lvm/backup"' '/etc/lvm/lvm.conf'

+ assert-sed '^(\s*archive_dir\s*=)(.*)' '\1 "/var/lib/lvm/archive"' '/etc/lvm/lvm.conf'

+ 

+ rm -f /tmp/assert-sed

+ 

+