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usr
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src
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linux-headers-6.8.0-36-generic
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tools
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testing
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selftests
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rcutorture
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bin
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drwxr-xr-x
]
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kvm-remote.sh
#!/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`"
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