Re: [9fans] vac flattens trees?

[roger peppe <rogpeppe@gmail.com>]

2009/3/9 Anthony Sorace <anothy@gmail.com>:
> given a list of files like "/fish /dog /snake/asp /snake/python", the
> results of a vac (as interpreted by vacfs) seem to be "/fish /dog /asp
> /python". is this intentional? it seems unexpected, and makes doing
> selective backups using vac a bit awkward.

i suppose your preferred behaviour would be
for it to do a treewise merge of the paths and
vac the shallowest root that contains all the
paths, missing out all contents that aren't
under one of the named paths.

this seems like quite an involved operation,
when you can get much the same result
by building a custom namespace containing the
trees you want (admittedly, a recursive mntgen
would be useful here).