On 04/06/2018 04:29 PM, Alexandre Arruda wrote: > 2018-04-06 9:39 GMT-03:00 Tomas Vondra <tomas.vondra@xxxxxxxxxxxxxxx > <mailto:tomas.vondra@xxxxxxxxxxxxxxx>>: > > > > On 04/06/2018 02:09 AM, Alexandre Arruda wrote: > > Hi, > > > > Some time ago, I had this errors frequently showed in logs after some > > autovacuum in some tables(pg 9.6). VACUUM FULL or CLUSTER in this tables > > show the same and not complete the tasks (showed by some table bloat > > select). > > Then, I did a full dump/restore into a new version (10.2) and everything > > is ok for a couple of months. Now, I have errors like this again: > > > > db1=# cluster pc44t; > > > > ERROR: found multixact 134100944 from before relminmxid 192042633 > > > > > > > > Like before, the only way to make the errors to desapear is by > > dump/reload the whole table. > > > > > > Thanks for any help. > > > > That's going to be hard, unless you still have the cluster around. > > This surely seems like some sort of data corruption issue, but without > being able to inspect the data pages it's nearly impossible to determine > what went wrong. > > We'd also need more information about what happened to the hardware and > cluster before the issues started to appear - crashes, hardware issues. > And so on. > > regards > > -- > Tomas Vondra http://www.2ndQuadrant.com > PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services > > > Hi Tomas, > The old cluster are gone, unfortunatly. > > This server is a 128GB ECC RAM with a dual redundant hba fiber channel > connect to a sotorage with Raid 6 and I don't have (apparently) any > errors reported. > Yesterday I did a test with one table: some sum aggragates, count(*), > etc, then dump/reload and repeat the tests the results (of querys) are > the same, regarding the vacuum problem > thats disapeared. > I'm not sure I understand correctly. So you can reproduce the issue? If yes, how can you share the scripts/data you use (and how large is it)? If we could reproduce it locally, it would make the investigation much easier. BTW you mentioned you're using PostgreSQL 9.6 - which minor version, specifically? regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
