Re: fixing pg_ctl with relative paths

On Wed, Jun 26, 2013 at 12:22 PM, Fujii Masao <masao.fujii@gmail.com> wrote:
> On Wed, Jun 26, 2013 at 2:36 PM, Hari Babu <haribabu.kommi@huawei.com> wrote:
>> On June 26, 2013 5:02 AM Josh Kupershmidt wrote:
>>>Thanks for the feedback. Attached is a rebased version of the patch with
>> the two small issues noted fixed.
>
> The following description in the document of pg_ctl needs to be modified?
>
>     restart might fail if relative paths specified were specified on
> the command-line during server start.

Right, that caveat could go away.

> +#define DATADIR_SPEC   "\"-D\" \""
> +
> +       datadir = strstr(post_opts, DATADIR_SPEC);
>
> Though this is a corner case, the patch doesn't seem to handle properly the case
> where "-D" appears as other option value, e.g., -k option value, in
> postmaster.opts
> file.

Could I see a command-line example of what you mean?

> Just idea to work around that problem is to just append the specified -D option
> and value to post_opts. IOW, -D option and value appear twice in post_opts.
> In this case, posteriorly-located ones are used in the end. Thought?

Hrm, I think we'd have to be careful that postmaster.opts doesn't
accumulate an additional -D specification with every restart.

Josh