On 10/01/2019 8:33 pm, Thomas Munro wrote:
On Wed, Oct 2, 2019 at 4:49 AM Larry Rosenman <l...@lerctr.org> wrote:
On 10/01/2019 10:46 am, Tom Lane wrote:
> Larry Rosenman <l...@lerctr.org> writes:
>> My Buildfarm animal (peripatus) has been failing check since
>> yesterday.
>> Can someone look at it?
>
> It's been doing this in parallel queries, in v11 and up:
>
> 2019-09-29 19:00:15.534 CDT [49513:1] ERROR: could not open shared
> memory segment "/PostgreSQL.1225945786": Permission denied
> 2019-09-29 19:00:15.535 CDT [48596:491] pg_regress/partition_prune
> ERROR: parallel worker failed to initialize
> 2019-09-29 19:00:15.535 CDT [48596:492] pg_regress/partition_prune
> HINT: More details may be available in the server log.
> 2019-09-29 19:00:15.535 CDT [48596:493] pg_regress/partition_prune
> CONTEXT: PL/pgSQL function explain_parallel_append(text) line 5 at
> FOR over EXECUTE statement
> 2019-09-29 19:00:15.535 CDT [48596:494] pg_regress/partition_prune
> STATEMENT: select explain_parallel_append('select avg(ab.a) from ab
> inner join lprt_a a on ab.a = a.a where a.a in(1, 0, 0)');
> 2019-09-29 19:00:15.535 CDT [48596:495] pg_regress/partition_prune
> WARNING: could not remove shared memory segment
> "/PostgreSQL.1225945786": Permission denied
>
> which looks like an external problem to me --- certainly, nothing
> we changed yesterday would explain it. Did you change anything
> about the system configuration, or do a software update?
>
> regards, tom lane
I did do an upgrade to a later SVN rev.
Let me reboot and see if that fixes anything.
(this is -CURRENT on FreeBSD, so it's always a moving target).
Hi Larry,
I'm seeing this on my FreeBSD 13 bleeding edge system too (built a
couple of days ago) and will see if I can find out what's up with
that. The most obvious culprit is the stuff that just landed in the
kernel to support Linux-style memfd_create() and thereby changed
around some shm_open() related things. Seems to be clearly not a
PostgreSQL problem.
Thanks,
Thomas
Thanks, Thomas.
Here's my 2 SVN revs if that would help:
FreeBSD SVN rev:
r352600 - - 1.69G 2019-09-22 13:13
r352873 NR / 43.1G 2019-09-29 16:36
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 214-642-9640 E-Mail: l...@lerctr.org
US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106
