Re: [PATCH 1/3] common: helper to get value from ndctl list by key

[Ross Zwisler <ross.zwisler@linux.intel.com>]

On Fri, Apr 07, 2017 at 03:56:02PM +0800, Xiong Zhou wrote:
> For some nvdimm DAX related tests, it's better to know
> some details of devices being tested. Adding new prog
> ndctl to manage nvdimms and jq to parse outputs.
> 
> Signed-off-by: Xiong Zhou <xzhou@redhat.com>
> ---
>  common/config |  2 ++
>  common/rc     | 24 ++++++++++++++++++++++++
>  2 files changed, 26 insertions(+)
> 
> diff --git a/common/config b/common/config
> index 59041a3..dfdcb8e 100644
> --- a/common/config
> +++ b/common/config
> @@ -212,6 +212,8 @@ export XZ_PROG="`set_prog_path xz`"
>  export FLOCK_PROG="`set_prog_path flock`"
>  export LDD_PROG="`set_prog_path ldd`"
>  export TIMEOUT_PROG="`set_prog_path timeout`"
> +export NDCTL_PROG="`set_prog_path ndctl`"
> +export JQ_PROG="`set_prog_path jq`"
>  
>  # use 'udevadm settle' or 'udevsettle' to wait for lv to be settled.
>  # newer systems have udevadm command but older systems like RHEL5 don't.
> diff --git a/common/rc b/common/rc
> index e1ab2c6..0540fdc 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -3148,6 +3148,30 @@ _require_chattr()
>      rm -f $TEST_DIR/syscalltest.out
>  }
>  
> +_require_ndctl()
> +{
> +	ndctl list >> $seqres.full || \

Should this use $NDCTL_PROG instead of running ndctl directly?  Ditto with jq
in _require_jq().

> +	_notrun "this test requires ndctl"
> +}
> +
> +_require_jq()
> +{
> +	jq -V >> $seqres.full || \
> +	_notrun "this test requires jq"
> +}
> +
> +# $1 SCRATCH_DEV or TEST_DEV or other dev
> +# $2 key
> +_ndctl_get_pmem_key_value()
> +{
> +	_require_jq
> +	_require_ndctl
> +
> +	$NDCTL_PROG list | \
> +	  $JQ_PROG -r ".[] | \
> +	  select(.blockdev == \"${1#/dev/}\") | .$2"
> +}
> +
>  _get_total_inode()
>  {
>  	if [ -z "$1" ]; then
> -- 
> 1.8.3.1
>