When running blktests with kernel debugging enabled it can happen that
_find_nvme_loop_dev() returns before the NVMe block device has appeared
in sysfs. This patch avoids that the NVMe tests fail as follows:
+cat: /sys/block/nvme1n1/uuid: No such file or directory
+cat: /sys/block/nvme1n1/wwid: No such file or directory
Cc: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
Cc: Johannes Thumshirn <jthumshirn@xxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
tests/nvme/rc | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/tests/nvme/rc b/tests/nvme/rc
index 348b4a3c2cbc..05dfc5915a13 100644
--- a/tests/nvme/rc
+++ b/tests/nvme/rc
@@ -169,8 +169,16 @@ _find_nvme_loop_dev() {
transport="$(cat "/sys/class/nvme/${dev}/transport")"
if [[ "$transport" == "loop" ]]; then
echo "$dev"
+ for ((i=0;i<10;i++)); do
+ [ -e /sys/block/$dev/uuid ] &&
+ [ -e /sys/block/$dev/wwid ] &&
+ return 0
+ sleep .1
+ done
+ return 1
fi
done
+ return 1
}
_filter_discovery() {
--
2.22.0.770.g0f2c4a37fd-goog
