Date: Thu, 25 Sep 2008 18:42:45 -0500 From: "David Polak" <me@davidpolak.com> To: "'Nejc S\(koberne'" <nejc@skoberne.net> Cc: freebsd-questions@freebsd.org Subject: RE: mount_unionfs for jails Message-ID: <006c01c91f68$69ebf120$3dc3d360$@com> In-Reply-To: <48DC1AE4.9000108@skoberne.net> References: <005401c91f35$3cf09fa0$b6d1dee0$@com> <48DBF589.3030906@skoberne.net> <006b01c91f5a$83c8c360$8b5a4a20$@com> <48DC1AE4.9000108@skoberne.net>
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> -----Original Message----- > From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd- > questions@freebsd.org] On Behalf Of Nejc S(koberne > Sent: Thursday, September 25, 2008 6:13 PM > To: David Polak > Cc: freebsd-questions@freebsd.org > Subject: Re: mount_unionfs for jails > > Hello, > > > Well, it turns out that my problem was due to a typo in my host > systems > > rc.conf. > > Thought so. > > > Do you know if there is a way to "reset" the unionfs? I did notice > this: > > It is called "whiteout". When you delete the file which is on lower > layer > in unionfs, you actually create a file of type "whiteout" on the upper > layer, > which tells you that the file is not there. So it is a mark for a > deleted file. > To "reset" it, you just need to delete the whiteout. You can do this > via > "rm -W". Actually whiteouts seem to be a nice solution but sometimes > you'll > run into interesting problems. When you try to upgrade jails, for > example. > Also, the problem is, because very few programs "support" whiteouts, > for > example "find" utility doesn't know about them, so you have to > reimplement > it (we made a shell script). > > We have created a lot of scripts which can do a lot of stuff with jails > and > unionfs on our server. If you are interested, let me know. > > HTH, > Nejc It would be much appreciated, thank you.
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