Re: binary version of pg_current_wal_insert_lsn and pg_walfile_name functions - Mailing list pgsql-hackers

From Ashutosh Sharma
Subject Re: binary version of pg_current_wal_insert_lsn and pg_walfile_name functions
Date
Msg-id CAE9k0P=5jRJ2=DpeY6HdZSpA9y+K_h=Buk9gSiieHHTcdHoj0Q@mail.gmail.com
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In response to Re: binary version of pg_current_wal_insert_lsn and pg_walfile_name functions  (Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>)
Responses Re: binary version of pg_current_wal_insert_lsn and pg_walfile_name functions
List pgsql-hackers
On Tue, Sep 20, 2022 at 5:13 PM Bharath Rupireddy
<bharath.rupireddyforpostgres@gmail.com> wrote:
>
> On Mon, Sep 19, 2022 at 8:19 PM Ashutosh Sharma <ashu.coek88@gmail.com> wrote:
> >
> > Hi All,
> >
> > Currently, we have pg_current_wal_insert_lsn and pg_walfile_name sql
> > functions which gives us information about the next wal insert
> > location and the WAL file that the next wal insert location belongs
> > to. Can we have a binary version of these sql functions?
>
> +1 for the idea in general.
>
> As said, pg_waldump seems to be the right candidate. I think we want
> the lsn of the last WAL record and its info and the WAL file name
> given an input data directory or just the pg_wal directory or any
> directory where WAL files are located. For instance, one can use this
> on an archive location containing archived WAL files or on a node
> where pg_receivewal is receiving WAL files. Am I missing any other
> use-cases?
>

Yeah, we can either add this functionality to pg_waldump or maybe add
a new binary itself that would return this information.

--
With Regards,
Ashutosh Sharma.



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