[1/3] common/cgroup2: better error message if cgroup2 fs is not mounted
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Message ID 20190715082523.18387-1-hch@lst.de
State New
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Series
  • [1/3] common/cgroup2: better error message if cgroup2 fs is not mounted
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Commit Message

Christoph Hellwig July 15, 2019, 8:25 a.m. UTC
Improve the _require_cgroup2 helper to print a more useful message
if the cgroup2 fs is not mounted.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 common/cgroup2 | 5 +++++
 1 file changed, 5 insertions(+)

Patch
diff mbox series

diff --git a/common/cgroup2 b/common/cgroup2
index f89825e2..8833c9c8 100644
--- a/common/cgroup2
+++ b/common/cgroup2
@@ -4,9 +4,14 @@  export CGROUP2_PATH="${CGROUP2_PATH:-/sys/fs/cgroup}"
 
 _require_cgroup2()
 {
+	if [ `findmnt -d backward -n -o FSTYPE -f ${CGROUP2_PATH}` != "cgroup2" ]; then
+		_notrun "cgroup2 not mounted on ${CGROUP2_PATH}"
+	fi
+
 	if [ ! -f "${CGROUP2_PATH}/cgroup.subtree_control" ]; then
 		_notrun "Test requires cgroup2 enabled"
 	fi
+
 	if [[ ! $(cat ${CGROUP2_PATH}/cgroup.controllers) =~ $1 ]]; then
 		_notrun "Cgroup2 doesn't support $1 controller $1"
 	fi