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|
#!/bin/sh
# Script to test the attribute cache behavior of the local OS client.
# If this script fails, it means that Amd cannot turn off the attrcache
# reliably on this host, and Amd therefore may not run reliably. See
# the README.attrcache file distributed with this am-utils.
# -Erez Zadok, September 29, 2005
# set PATH (must install am-utils first)
prefix=@prefix@
exec_prefix=@exec_prefix@
PATH=@sbindir@:@bindir@:/usr/ucb:/usr/bin:/bin:${PATH}
export PATH
# test if amd is running
amq -p > /dev/null 2>&1
if test $? = 0
then
echo "### Amd already running... please shutdown Amd first"
exit 1
fi
mapfile="/tmp/amd.testmap.$$"
logfile="/var/log/amd"
delay=1
a=/a
CreateMap1 () {
echo "### Creating correct map"
cat - >$mapfile <<EOF
a type:=link;fs:=/tmp/a
EOF
}
CreateMap2 () {
echo "### Creating weird map"
cat - >$mapfile <<EOF
a type:=link;fs:=/tmp/b
EOF
}
StopAMD () {
ctl-amd stop
# do not delete files we may need to use to debug Amd
# rm -f /tmp/a /tmp/b $mapfile $logfile
}
touch /tmp/a
touch /tmp/b
CreateMap1
echo amd -x all -D all -r -l $logfile $a $mapfile -cache:=mapdefault,sync
amd -x all -D all -r -l $logfile $a $mapfile -cache:=mapdefault,sync
sleep 3 # give amd chance to start properly
amq
inode_a=`ls -lLi /tmp/a | awk '{print $1}'`
inode_b=`ls -lLi /tmp/b | awk '{print $1}'`
ls -lLi $a/a
ls -lLi $a/b
ls -l $mapfile
# how many times to try until we call it a success...
maxtry=10
while test $maxtry -gt 0
do
echo "$maxtry tries left ..."
let maxtry=maxtry-1
amq
CreateMap1
sleep $delay
ls -l $mapfile
echo "### looking at a... should get a"
ino=`ls -lLi $a/a | awk '{print $1}'`
if test -z "$ino"
then
ls -li $a/a
amq
amq -m
stat $a
echo "a link does not exist!"
StopAMD
exit 1
fi
if test $ino -ne $inode_a
then
ls -li $a/a
amq
amq -m
stat $a
echo "a link does not point to A!"
StopAMD
exit 1
fi
# Here is the main trick we try: force amd to flush one entry, then
# change the amd map on disk, and then see if the kernel will have
# flushed the attribute cache; if it did, then Amd will see the
# correctly changed map entry.
amq -u $a/a
sleep $delay
stat $a
CreateMap2
sleep $delay
ls -l $mapfile
echo "### looking at a... should get b"
ino=`ls -lLi $a/a | awk '{print $1}'`
if test -z "$ino"
then
ls -li $a/a
amq
amq -m
stat $a
echo "a link does not exist!"
StopAMD
exit 1
fi
if test $ino -ne $inode_b
then
ls -li $a/a
amq
amq -m
stat $a
echo "a link does not point to B!"
StopAMD
exit 1
fi
amq -u $a/a
sleep $delay
stat $a
done
StopAMD
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