Re: Does Postgres ever write to tables without file system timestamps getting updated?

Guten Tag Thorsten Schöning,
am Dienstag, 6. Juni 2017 um 15:32 schrieben Sie:

> The file belongs to pg_largeobject and that table contains a lot of
> data, hence the named suffixes. Most of those files in the sequence
> have old timestamps like the one above, more than a few days without
> any writing, and are NOT all backed up and have the same MD5 hash like
> in my backup. Only few files once a while differ like the one in the
> example.

From the following very old data files, mostly unchanged for
days/weeks, e.g. 2613.13 got transferred because of different
checksums, while 2613.10 didn't:

> -rw------- 1 postgres postgres 1073741824 Jun 4 04:40 2613
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:42 2613.1
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:56 2613.10
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:57 2613.11
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:57 2613.12
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:58 2613.13
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:59 2613.14
> -rw------- 1 postgres postgres 1073741824 Mai 28 04:40 2613.15
> -rw------- 1 postgres postgres 686645248 Jun 4 04:42 2613.16
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:44 2613.2
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:46 2613.3
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:47 2613.4
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:49 2613.5
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:50 2613.6
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:52 2613.7
> -rw------- 1 postgres postgres 1073741824 Mai 21 04:53 2613.8
> -rw------- 1 postgres postgres 1073741824 Jun 4 04:40 2613.9
> -rw------- 1 postgres postgres 4407296 Jun 4 04:42 2613_fsm
> -rw------- 1 postgres postgres 548864 Jun 4 04:42 2613_vm

Mit freundlichen Grüßen,

Thorsten Schöning

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