| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Peter <pmc(at)citylink(dot)dinoex(dot)sub(dot)org> |
| Cc: | "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: 12.2: Why do my Redo Logs disappear?? |
| Date: | 2020-06-09 00:40:20 |
| Message-ID: | CAH2-WzkW4deJz2WfwAw5LuK+s_nKHJkfA4WxXYS+OObnQ47jYA@mail.gmail.com |
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| Lists: | pgsql-general |
On Mon, Jun 8, 2020 at 5:17 PM Peter <pmc(at)citylink(dot)dinoex(dot)sub(dot)org> wrote:
> Loosing a RedoLog is very bad, because there is no redundancy,
> loosing a single one of them makes the timeline disappear and it
> will only reappear after another Base Backup. Very very bad.
> In this case, it seems, Postgres will delete the current log
> without archiving it. :(
I strongly suspect that you were hit by the bug fixed in commit
4e87c483. You should upgrade to Postgres 12.3 ASAP, to get that fix:
"Avoid premature recycling of WAL segments during crash recovery
(Jehan-Guillaume de Rorthais)
WAL segments that become ready to be archived during crash recovery
were potentially recycled without being archived."
Sorry that you were affected by this bug -- it really sucks.
--
Peter Geoghegan
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