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 <[email protected]> Cc: Chaitanya Kulkarni <[email protected]> Cc: Johannes Thumshirn <[email protected]> Signed-off-by: Bart Van Assche <[email protected]> --- 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
