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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-06-16 06:11:21 +0300 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-07-15 01:10:57 +0300 |
| commit | 80021ffb6820baf77d17b7a3b7ec9e89faa69578 (patch) | |
| tree | aeb8653f588e44f5c6ad0677ea54ae0607c0c12f /tools/testing/selftests/rcutorture | |
| parent | dd3ffd125f89cdb38093df56eecdfa5539d983b4 (diff) | |
| download | linux-80021ffb6820baf77d17b7a3b7ec9e89faa69578.tar.xz | |
torture: Make kvm-remote print diagnostics on initial ssh failure
Currently, if the initial ssh fails, kvm-remote.sh gives up, printing a
message saying so. But it would be nice to get a better idea as to why
ssh failed. This commit therefore dumps out ssh's exit code, stdout,
and stderr upon ssh failure for diagnostic purposes.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'tools/testing/selftests/rcutorture')
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/kvm-remote.sh | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-remote.sh b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh index a2328163eba1..134cdef5a6e0 100755 --- a/tools/testing/selftests/rcutorture/bin/kvm-remote.sh +++ b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh @@ -137,14 +137,20 @@ chmod +x $T/bin/kvm-remote-*.sh # Check first to avoid the need for cleanup for system-name typos for i in $systems do - ncpus="`ssh -o BatchMode=yes $i getconf _NPROCESSORS_ONLN 2> /dev/null`" + ssh -o BatchMode=yes $i getconf _NPROCESSORS_ONLN > $T/ssh.stdout 2> $T/ssh.stderr ret=$? if test "$ret" -ne 0 then - echo System $i unreachable, giving up. | tee -a "$oldrun/remote-log" + 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: $ncpus CPUs " " `date` | tee -a "$oldrun/remote-log" + echo $i: `cat $T/ssh.stdout` CPUs " " `date` | tee -a "$oldrun/remote-log" done # Download and expand the tarball on all systems. |