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58 lines
2.1 KiB
Bash
Executable file
58 lines
2.1 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2017 Dell EMC Isilon
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# nfs loop back mount of a tmpfs file system.
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# "[tcp] 127.0.0.1:/mnt: Permission denied" seen, when tmpfs options are
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# used.
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. ../default.cfg
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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grep -q $mntpoint /etc/exports ||
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{ echo "$mntpoint missing from /etc/exports"; exit 0; }
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s=0
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m2=${mntpoint}2
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[ -d $m2 ] || mkdir $m2
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mount | grep "on $m2 " | grep -q nfs && umount $m2
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mount | grep "on $mntpoint " | grep -q tmpfs && umount -f $mntpoint
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[ $# -eq 1 ] &&
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mount -t tmpfs tmpfs $mntpoint || s=1 # This works
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[ $# -eq 0 ] &&
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mount -o size=100m -t tmpfs tmpfs $mntpoint || s=1
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mount -t nfs -o tcp -o rw,retrycnt=1 127.0.0.1:$mntpoint $m2 || s=2
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while mount | grep "on $m2 " | grep -q nfs; do
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umount $m2
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done
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while mount | grep "on $mntpoint " | grep -q tmpfs; do
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umount $mntpoint || sleep 1
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done
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exit $s
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