Re: pg_basebackup wish list

On Tue, Jul 26, 2016 at 11:58 AM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
> On Wed, Jul 13, 2016 at 3:06 AM, Jeff Janes <jeff(dot)janes(at)gmail(dot)com> wrote:
>> On Tue, Jul 12, 2016 at 10:48 AM, Peter Eisentraut
>> <peter(dot)eisentraut(at)2ndquadrant(dot)com> wrote:
>>> On 7/12/16 12:53 PM, Jeff Janes wrote:
>>>> The --help message for pg_basebackup says:
>>>>
>>>> -Z, --compress=0-9 compress tar output with given compression level
>>>>
>>>> But -Z0 is then rejected as 'invalid compression level "0"'. The real
>>>> docs do say 1-9, only the --help message has this bug. Trivial patch
>>>> attached.
>>>
>>> pg_dump --help and man page say it supports 0..9. Maybe we should make
>>> that more consistent.
>>
>> pg_dump actually does support -Z0, though. Well, sort of. It outputs
>> plain text. Rather than plain text wrapped in some kind of dummy gzip
>> header, which is what I had naively expected.
>>
>> Is that what -Z0 in pg_basebackup should do as well, just output
>> uncompressed tar data, and not add the ".gz" to the "base.tar" file
>> name?
>
> Yes, I think. What about the attached patch?
>

What if user tries to use -Z 0 with format as tar, won't it generate
base.tar without any compression? I am not sure if that is what Jeff
intends to say in his proposal.

--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com