On 2019-08-05 5:25 p.m., Bart Van Assche wrote:
> 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>
Makes sense to me.
Reviewed-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
> ---
> 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() {
>
