| From: | Michael Harris <harmic(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Jakub Wartak <jakub(dot)wartak(at)enterprisedb(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Tomas Vondra <tomas(at)vondra(dot)me>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: FileFallocate misbehaving on XFS |
| Date: | 2025-01-04 04:34:37 |
| Message-ID: | CADofcAWeD4uFPjk8Tee+wxFbaoa30hEENs+JQXg24+uaoKVD1A@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi Andres
On Wed, 1 Jan 2025 at 02:31, Andres Freund <andres(at)anarazel(dot)de> wrote:
> Note that there's
> a) a few hours between messages, whereas previous they were more frequent
> b) f_bfree increased substantially.
>
> I assume that somewhere around 2AM some script prunes old partitions?
Correct.
Data is imported continuously, and the pruning is typically scheduled for 02:00.
In general the events do seem more frequent when the FS is more full.
On Fri, 3 Jan 2025 at 01:40, Andres Freund <andres(at)anarazel(dot)de> wrote:
> FWIW, I raised this on the #xfs irc channel. One ask they had was:
>
> │15:56:40 dchinner | andres: can you get a metadump of a filesystem that is displaying these symptoms for us to analyse?
> │15:57:54 dchinner | metadumps don't contain data, and metadata is obfuscated so no filenames or attributes are exposed, either.
I'm on leave from work at the moment, but I will try to collect this
when I'm back.
Cheers
Mike
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