ceph/qa/workunits/snaptest-upchildrealms.sh

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#!/bin/sh -x
set -e
#
# verify that a snap update on a parent realm will induce
# snap cap writeback for inodes child realms
#
mkdir a
mkdir a/b
mkdir a/.snap/a1
mkdir a/b/.snap/b1
echo asdf > a/b/foo
mkdir a/.snap/a2
# client _should_ have just queued a capsnap for writeback
ln a/b/foo a/b/bar # make the server cow the inode
echo "this should not hang..."
cat a/b/.snap/_a2_*/foo
echo "good, it did not hang."
rmdir a/b/.snap/b1
rmdir a/.snap/a1
rmdir a/.snap/a2
rm -r a
echo "OK"