On Thu, Aug 29, 2024 at 12:08 PM KK CHN <kkchn...@gmail.com> wrote:

>
> On Thu, Aug 29, 2024 at 6:54 PM Greg Sabino Mullane <htamf...@gmail.com>
> wrote:
>
>> On Thu, Aug 29, 2024 at 2:21 AM KK CHN <kkchn...@gmail.com> wrote:
>>
>>> I am doing a full backup  using PgBackRest from a production server to
>>> Reposerver.
>>>
>> ...
>>
>>> If so, does the backup process start  again from  scratch ?   or it
>>> resumes from  where the backup process is stopped   ?
>>>
>>
>> It resumes. You will see a message like this:
>>
>> WARN: resumable backup 20240829-091727F of same type exists -- invalid
>> files will be removed then the backup will resume
>>
>> Any suggestions much appreciated
>>>
>>
>> Boost your process-max as high as you are able to speed up your backup
>> time.
>>
>>
> what will be the ideal process-max number to use ?
>

We can't answer that.  It depends on what else your PG and PgBackRest
servers are doing when "pgbackrest backup" runs.


> Once I update the process-max param in pgbackrest.conf ,  do I need to
> stop and  start the pgback rest ?
>

Or just editing the pgbackrest.conf on the fly will reflect the increased
> process-max  numbers advantage ?
>

"pgbackrest backup" reads the config file when it starts.


> Is there a limit for proces max. setting ?
>

I think you need managed DBA services.

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