Date: Wed, 17 Dec 2008 09:57:55 +0300 From: Oleg Sharoyko <osharoiko@gmail.com> To: freebsd-fs@freebsd.org Subject: Strange behaviour with unionfs Message-ID: <1229497075.1182.9.camel@brain.cc.rsu.ru>
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Hi! Could please someone check the following sequence of commands in recent -CURRENT: cd /tmp mkdir sandbox cd sandbox/ mkdir -p 1 mkdir -p 2/2 mkdir -p 3/3 echo Test > 3/3/test.txt mount -t unionfs 2 1 mount -t nullfs 3 1/2 cat 1/2/3/test.txt test -d 1/2 cat 1/2/3/test.txt I'm running -STABLE with patch for unix sockets (which I converted from -CURRENT) and it gives me really strange results: hetzner-srv1, /tmp # cd /tmp hetzner-srv1, /tmp # mkdir sandbox hetzner-srv1, /tmp # cd sandbox/ hetzner-srv1, /tmp/sandbox # mkdir -p 1 hetzner-srv1, /tmp/sandbox # mkdir -p 2/2 hetzner-srv1, /tmp/sandbox # mkdir -p 3/3 hetzner-srv1, /tmp/sandbox # echo Test > 3/3/test.txt hetzner-srv1, /tmp/sandbox # mount -t unionfs 2 1 hetzner-srv1, /tmp/sandbox # mount -t nullfs 3 1/2 hetzner-srv1, /tmp/sandbox # cat 1/2/3/test.txt cat: 1/2/3/test.txt: No such file or directory hetzner-srv1, /tmp/sandbox # test -d 1/2 hetzner-srv1, /tmp/sandbox # cat 1/2/3/test.txt Test hetzner-srv1, /tmp/sandbox # It looks like files in subdirectories of filesystems mounted on top of unionfs are not visible until I somehow test the mountpoint. -- Oleg Sharoyko. Software and Network Engineer Computer Center of Rostov State University.
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