Re: ENOSPC FailedAssertion("!(RefCountErrors == 0)"

On Wed, Jun 27, 2018 at 06:39:39PM -0500, Justin Pryzby wrote:
> < 2018-06-17 11:38:45.465 CDT pryzbyj >FATAL:  the database system is in recovery mode
> < 2018-06-17 11:38:45.466 CDT pryzbyj >FATAL:  the database system is in recovery mode
> < 2018-06-17 11:38:45.468 CDT  >FATAL:  could not extend file "base/17379/38665798": No space left on device
> < 2018-06-17 11:38:45.468 CDT  >HINT:  Check free disk space.
> < 2018-06-17 11:38:45.468 CDT  >CONTEXT:  WAL redo at 2AA/239676B8 for Heap/INSERT+INIT: off 1
> < 2018-06-17 11:38:45.468 CDT  >WARNING:  buffer refcount leak: [2366] (rel=base/17379/38665798, blockNum=1241,
flags=0x8a000000,refcount=1 1) 
> TRAP: FailedAssertion("!(RefCountErrors == 0)", File: "bufmgr.c", Line: 2523)
>
> Unfortunately, I have neither a core nor stacktrace to share, as the DB was
> (until after running out of space) on the same FS as /var :(

You may be interested in this thread, vintage 2017, where I also posted
a test case, assuming that you can create an extra partition and make it
run out of space:
https://www.postgresql.org/message-id/19533.1497283908@sss.pgh.pa.us
So that's a known problem.
--
Michael