diff options
Diffstat (limited to 'tools/testing/selftests/rcutorture/bin/kvm-remote.sh')
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/kvm-remote.sh | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-remote.sh b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh new file mode 100755 index 000000000000..134cdef5a6e0 --- /dev/null +++ b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh @@ -0,0 +1,280 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# Run a series of tests on remote systems under KVM. +# +# Usage: kvm-remote.sh "systems" [ <kvm.sh args> ] +# kvm-remote.sh "systems" /path/to/old/run [ <kvm-again.sh args> ] +# +# Copyright (C) 2021 Facebook, Inc. +# +# Authors: Paul E. McKenney <paulmck@kernel.org> + +scriptname=$0 +args="$*" + +if ! test -d tools/testing/selftests/rcutorture/bin +then + echo $scriptname must be run from top-level directory of kernel source tree. + exit 1 +fi + +RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE +PATH=${RCUTORTURE}/bin:$PATH; export PATH +. functions.sh + +starttime="`get_starttime`" + +systems="$1" +if test -z "$systems" +then + echo $scriptname: Empty list of systems will go nowhere good, giving up. + exit 1 +fi +shift + +# Pathnames: +# T: /tmp/kvm-remote.sh.NNNNNN where "NNNNNN" is set by mktemp +# resdir: /tmp/kvm-remote.sh.NNNNNN/res +# rundir: /tmp/kvm-remote.sh.NNNNNN/res/$ds ("-remote" suffix) +# oldrun: `pwd`/tools/testing/.../res/$otherds +# +# Pathname segments: +# TD: kvm-remote.sh.NNNNNN +# ds: yyyy.mm.dd-hh.mm.ss-remote + +T="`mktemp -d ${TMPDIR-/tmp}/kvm-remote.sh.XXXXXX`" +trap 'rm -rf $T' 0 +TD="`basename "$T"`" + +resdir="$T/res" +ds=`date +%Y.%m.%d-%H.%M.%S`-remote +rundir=$resdir/$ds +echo Results directory: $rundir +echo $scriptname $args +if echo $1 | grep -q '^--' +then + # Fresh build. Create a datestamp unless the caller supplied one. + datestamp="`echo "$@" | awk -v ds="$ds" '{ + for (i = 1; i < NF; i++) { + if ($i == "--datestamp") { + ds = ""; + break; + } + } + if (ds != "") + print "--datestamp " ds; + }'`" + kvm.sh --remote "$@" $datestamp --buildonly > $T/kvm.sh.out 2>&1 + ret=$? + if test "$ret" -ne 0 + then + echo $scriptname: kvm.sh failed exit code $? + cat $T/kvm.sh.out + exit 2 + fi + oldrun="`grep -m 1 "^Results directory: " $T/kvm.sh.out | awk '{ print $3 }'`" + touch "$oldrun/remote-log" + echo $scriptname $args >> "$oldrun/remote-log" + echo | tee -a "$oldrun/remote-log" + echo " ----" kvm.sh output: "(`date`)" | tee -a "$oldrun/remote-log" + cat $T/kvm.sh.out | tee -a "$oldrun/remote-log" + # We are going to run this, so remove the buildonly files. + rm -f "$oldrun"/*/buildonly + kvm-again.sh $oldrun --dryrun --remote --rundir "$rundir" > $T/kvm-again.sh.out 2>&1 + ret=$? + if test "$ret" -ne 0 + then + echo $scriptname: kvm-again.sh failed exit code $? | tee -a "$oldrun/remote-log" + cat $T/kvm-again.sh.out | tee -a "$oldrun/remote-log" + exit 2 + fi +else + # Re-use old run. + oldrun="$1" + if ! echo $oldrun | grep -q '^/' + then + oldrun="`pwd`/$oldrun" + fi + shift + touch "$oldrun/remote-log" + echo $scriptname $args >> "$oldrun/remote-log" + kvm-again.sh "$oldrun" "$@" --dryrun --remote --rundir "$rundir" > $T/kvm-again.sh.out 2>&1 + ret=$? + if test "$ret" -ne 0 + then + echo $scriptname: kvm-again.sh failed exit code $? | tee -a "$oldrun/remote-log" + cat $T/kvm-again.sh.out | tee -a "$oldrun/remote-log" + exit 2 + fi + cp -a "$rundir" "$RCUTORTURE/res/" + oldrun="$RCUTORTURE/res/$ds" +fi +echo | tee -a "$oldrun/remote-log" +echo " ----" kvm-again.sh output: "(`date`)" | tee -a "$oldrun/remote-log" +cat $T/kvm-again.sh.out +echo | tee -a "$oldrun/remote-log" +echo Remote run directory: $rundir | tee -a "$oldrun/remote-log" +echo Local build-side run directory: $oldrun | tee -a "$oldrun/remote-log" + +# Create the kvm-remote-N.sh scripts in the bin directory. +awk < "$rundir"/scenarios -v dest="$T/bin" -v rundir="$rundir" ' +{ + n = $1; + sub(/\./, "", n); + fn = dest "/kvm-remote-" n ".sh" + print "kvm-remote-noreap.sh " rundir " &" > fn; + scenarios = ""; + for (i = 2; i <= NF; i++) + scenarios = scenarios " " $i; + print "kvm-test-1-run-batch.sh" scenarios >> fn; + print "sync" >> fn; + print "rm " rundir "/remote.run" >> fn; +}' +chmod +x $T/bin/kvm-remote-*.sh +( cd "`dirname $T`"; tar -chzf $T/binres.tgz "$TD/bin" "$TD/res" ) + +# Check first to avoid the need for cleanup for system-name typos +for i in $systems +do + ssh -o BatchMode=yes $i getconf _NPROCESSORS_ONLN > $T/ssh.stdout 2> $T/ssh.stderr + ret=$? + if test "$ret" -ne 0 + then + echo "System $i unreachable ($ret), giving up." | tee -a "$oldrun/remote-log" + echo ' --- ssh stdout: vvv' | tee -a "$oldrun/remote-log" + cat $T/ssh.stdout | tee -a "$oldrun/remote-log" + echo ' --- ssh stdout: ^^^' | tee -a "$oldrun/remote-log" + echo ' --- ssh stderr: vvv' | tee -a "$oldrun/remote-log" + cat $T/ssh.stderr | tee -a "$oldrun/remote-log" + echo ' --- ssh stderr: ^^^' | tee -a "$oldrun/remote-log" + exit 4 + fi + echo $i: `cat $T/ssh.stdout` CPUs " " `date` | tee -a "$oldrun/remote-log" +done + +# Download and expand the tarball on all systems. +echo Build-products tarball: `du -h $T/binres.tgz` | tee -a "$oldrun/remote-log" +for i in $systems +do + echo Downloading tarball to $i `date` | tee -a "$oldrun/remote-log" + cat $T/binres.tgz | ssh -o BatchMode=yes $i "cd /tmp; tar -xzf -" + ret=$? + tries=0 + while test "$ret" -ne 0 + do + echo Unable to download $T/binres.tgz to system $i, waiting and then retrying. $tries prior retries. | tee -a "$oldrun/remote-log" + sleep 60 + cat $T/binres.tgz | ssh -o BatchMode=yes $i "cd /tmp; tar -xzf -" + ret=$? + if test "$ret" -ne 0 + then + if test "$tries" > 5 + then + echo Unable to download $T/binres.tgz to system $i, giving up. | tee -a "$oldrun/remote-log" + exit 10 + fi + fi + tries=$((tries+1)) + done +done + +# Function to check for presence of a file on the specified system. +# Complain if the system cannot be reached, and retry after a wait. +# Currently just waits forever if a machine disappears. +# +# Usage: checkremotefile system pathname +checkremotefile () { + local ret + local sleeptime=60 + + while : + do + ssh -o BatchMode=yes $1 "test -f \"$2\"" + ret=$? + if test "$ret" -eq 255 + then + echo " ---" ssh failure to $1 checking for file $2, retry after $sleeptime seconds. `date` | tee -a "$oldrun/remote-log" + elif test "$ret" -eq 0 + then + return 0 + elif test "$ret" -eq 1 + then + echo " ---" File \"$2\" not found: ssh $1 test -f \"$2\" | tee -a "$oldrun/remote-log" + return 1 + else + echo " ---" Exit code $ret: ssh $1 test -f \"$2\", retry after $sleeptime seconds. `date` | tee -a "$oldrun/remote-log" + return $ret + fi + sleep $sleeptime + done +} + +# Function to start batches on idle remote $systems +# +# Usage: startbatches curbatch nbatches +# +# Batches are numbered starting at 1. Returns the next batch to start. +# Be careful to redirect all debug output to FD 2 (stderr). +startbatches () { + local curbatch="$1" + local nbatches="$2" + local ret + + # Each pass through the following loop examines one system. + for i in $systems + do + if test "$curbatch" -gt "$nbatches" + then + echo $((nbatches + 1)) + return 0 + fi + if checkremotefile "$i" "$resdir/$ds/remote.run" 1>&2 + then + continue # System still running last test, skip. + fi + ssh -o BatchMode=yes "$i" "cd \"$resdir/$ds\"; touch remote.run; PATH=\"$T/bin:$PATH\" nohup kvm-remote-$curbatch.sh > kvm-remote-$curbatch.sh.out 2>&1 &" 1>&2 + ret=$? + if test "$ret" -ne 0 + then + echo ssh $i failed: exitcode $ret 1>&2 + exit 11 + fi + echo " ----" System $i Batch `head -n $curbatch < "$rundir"/scenarios | tail -1` `date` 1>&2 + curbatch=$((curbatch + 1)) + done + echo $curbatch +} + +# Launch all the scenarios. +nbatches="`wc -l "$rundir"/scenarios | awk '{ print $1 }'`" +curbatch=1 +while test "$curbatch" -le "$nbatches" +do + startbatches $curbatch $nbatches > $T/curbatch 2> $T/startbatches.stderr + curbatch="`cat $T/curbatch`" + if test -s "$T/startbatches.stderr" + then + cat "$T/startbatches.stderr" | tee -a "$oldrun/remote-log" + fi + if test "$curbatch" -le "$nbatches" + then + sleep 30 + fi +done +echo All batches started. `date` | tee -a "$oldrun/remote-log" + +# Wait for all remaining scenarios to complete and collect results. +for i in $systems +do + echo " ---" Waiting for $i `date` | tee -a "$oldrun/remote-log" + while checkremotefile "$i" "$resdir/$ds/remote.run" + do + sleep 30 + done + echo " ---" Collecting results from $i `date` | tee -a "$oldrun/remote-log" + ( cd "$oldrun"; ssh -o BatchMode=yes $i "cd $rundir; tar -czf - kvm-remote-*.sh.out */console.log */kvm-test-1-run*.sh.out */qemu[_-]pid */qemu-retval */qemu-affinity; rm -rf $T > /dev/null 2>&1" | tar -xzf - ) +done + +( kvm-end-run-stats.sh "$oldrun" "$starttime"; echo $? > $T/exitcode ) | tee -a "$oldrun/remote-log" +exit "`cat $T/exitcode`" |