[PATCH RFC nvme-cli 2/2] nvme.spec: generate hostnqn file on install and remove on uninstall

[J Freyensee]

On Sun, 2016-11-06 at 21:13 +0200, Sagi Grimberg wrote:
> Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
> ---
>  nvme.spec.in | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/nvme.spec.in b/nvme.spec.in
> index a4718773a962..e95810995395 100644
> --- a/nvme.spec.in
> +++ b/nvme.spec.in
> @@ -33,6 +33,20 @@ make install DESTDIR=%{buildroot} PREFIX=/usr
>  %clean
>  rm -rf $RPM_BUILD_ROOT
>  
> +%post
> +if [ $1 = 1 ]; then # 1 : This package is being installed for the
> first time
> +	if [ ! -f /etc/nvme/hostnqn ]; then
> +		install -D /dev/null /etc/nvme/hostnqn
> +		year_month=$(date | awk '{print $6"-"$3}')

Hey Sagi,

7.9 of the base NVMe spec makes it clear on unique names that the "2nd
format", which is what is being assembled here, uses a fixed date
"2014-08" in it's name, which is exactly what the NVMe Host driver does
as its default:

fabrics.c:  "nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUb", &host->id);

I would just do what the NVMe host is doing already and make it easier
on yourself ;-).