From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
If the XFS error injection knob directory exists but the knob itself
doesn't, then we know that this kernel doesn't support the knob and
can skip the test.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
common/inject | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/common/inject b/common/inject
index 903fb379..984ec209 100644
--- a/common/inject
+++ b/common/inject
@@ -62,6 +62,13 @@ _require_xfs_io_error_injection()
knob="$(_find_xfs_mountdev_errortag_knob "${TEST_DEV}" "${type}")"
test -w "${knob}" && return
+ # If the directory containing the sysfs error injection knob exists
+ # but the knob itself isn't usable, this kernel doesn't know about
+ # the knob. Skip the test.
+ if [ -d "$(dirname "${knob}")" ]; then
+ _notrun "XFS error injection $type unknown on this kernel."
+ fi
+
# NOTE: We can't actually test error injection here because xfs
# hasn't always range checked the argument to xfs_errortag_add.
# We also don't want to trip an error before we're ready to deal
