ceph/qa/workunits/snaps/snaptest-capwb.sh

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#!/bin/sh -x
set -e
mkdir foo
# make sure mds handles it when the client does not send flushsnap
echo x > foo/x
sync
mkdir foo/.snap/ss
ln foo/x foo/xx
cat foo/.snap/ss/x
rmdir foo/.snap/ss
#
echo a > foo/a
echo b > foo/b
mkdir foo/.snap/s
r=`cat foo/.snap/s/a`
[ -z "$r" ] && echo "a appears empty in snapshot" && false
ln foo/b foo/b2
cat foo/.snap/s/b
echo "this used to hang:"
echo more >> foo/b2
echo "oh, it didn't hang! good job."
cat foo/b
rmdir foo/.snap/s
rm -r foo
echo OK