[kvm-unit-tests PATCH 7/9] migration: Add quiet migration support
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2023-12-22 13:57:42
Also in:
kvm, kvmarm, linux-s390
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
Console output required to support migration becomes quite noisy when doing lots of migrations. Provide a migrate_quiet() call that suppresses console output and doesn't log. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- lib/migrate.c | 12 ++++++++++++ lib/migrate.h | 1 + scripts/arch-run.bash | 4 ++-- 3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/lib/migrate.c b/lib/migrate.c
index b7721659..4e0ab516 100644
--- a/lib/migrate.c
+++ b/lib/migrate.c@@ -18,6 +18,18 @@ void migrate(void) report_info("Migration complete"); } +/* + * Like migrate() but supporess output and logs, useful for intensive + * migration stress testing without polluting logs. Test cases should + * provide relevant information about migration in failure reports. + */ +void migrate_quiet(void) +{ + puts("Now migrate the VM (quiet)\n"); + (void)getchar(); +} + + /* * Initiate migration and wait for it to complete. * If this function is called more than once, it is a no-op.
diff --git a/lib/migrate.h b/lib/migrate.h
index 2af06a72..95b9102b 100644
--- a/lib/migrate.h
+++ b/lib/migrate.h@@ -7,4 +7,5 @@ */ void migrate(void); +void migrate_quiet(void); void migrate_once(void);
diff --git a/scripts/arch-run.bash b/scripts/arch-run.bash
index 0feaa190..5810f9a1 100644
--- a/scripts/arch-run.bash
+++ b/scripts/arch-run.bash@@ -154,7 +154,7 @@ run_migration () -chardev socket,id=mon,path=${src_qmp},server=on,wait=off \ -mon chardev=mon,mode=control > ${src_outfifo} & live_pid=$! - cat ${src_outfifo} | tee ${src_out} & + cat ${src_outfifo} | tee ${src_out} | grep -v "Now migrate the VM (quiet)" & # The test must prompt the user to migrate, so wait for the "migrate" # keyword
@@ -202,7 +202,7 @@ do_migration () -mon chardev=mon,mode=control -incoming unix:${dst_incoming} \ < <(cat ${dst_infifo}) > ${dst_outfifo} & incoming_pid=$! - cat ${dst_outfifo} | tee ${dst_out} & + cat ${dst_outfifo} | tee ${dst_out} | grep -v "Now migrate the VM (quiet)" & # The test must prompt the user to migrate, so wait for the "migrate" keyword while ! grep -q -i "Now migrate the VM" < ${src_out} ; do
--
2.42.0