Re: [HACKERS] Aborted Transaction During Vacuum

"Oliver Elphick" <olly(at)lfix(dot)co(dot)uk> writes:
>> But the vc_abort problem didn't cause a backend coredump --- it just
>> reported an error and failed to complete the vacuum, no?

> I got a coredump too; I never mentioned it, because I found the proximate
> cause and curing that made it go away. When unlink failed in vc_shutdown,
> it called ELOG and a segfault occurred a little later.

Ah, I wish I'd known that. So what Tony is seeing is exactly the same
behavior you observed. OK, I feel better now --- I thought the coredump
was probably some platform-specific misbehavior that only Tony was seeing.

We still need to figure out what is causing it, because I can see no
reason for a coredump after vc_shutdown elog()s. Something is being
clobbered that should not be. But it sounds like installing the
vc_abort patch will get Tony on his feet, and then we can look for the
secondary bug at our leisure.

regards, tom lane