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To: Denis Shaposhnikov <dsh@neva.vlink.ru>
From: takawata@jp.freebsd.org
In-reply-to: Your message of "Fri, 01 Oct 2004 15:31:14 +0400."
             <87y8iqptdp.fsf@neva.vlink.ru>
Date: Fri, 01 Oct 2004 21:20:04 +0900
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cc: freebsd-current@freebsd.org
Subject: Re: jail, unionfs, pwd
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In message <87y8iqptdp.fsf@neva.vlink.ru>, Denis Shaposhnikov wrote:
>Hi!
>
>Something wrong with unionfs, look at this:
>
>[dsh@neva dsh]$ mkdir /mnt/.ro
>[dsh@neva dsh]$ cp -R /bin /lib /libexec /mnt/
>[dsh@neva dsh]$ mount_unionfs -r /usr /mnt/.ro
>[dsh@neva dsh]$ jail /mnt x.x 127.0.0.1 /bin/tcsh
># pwd
>/
># cd /.ro
># pwd
>/.ro
># cd /.ro/bin
># pwd
>pwd: .: No such file or directory
>
>Why pwd said this? What is wrong?

If the filesystem  /mnt is using is same as /usr,
it is something like the problem which I encounted once.

http://docs.FreeBSD.org/cgi/mid.cgi?200202251435.XAA91094