Re: Why can't I drop a tablespace?

On 7/10/21 10:43 AM, Phil Endecott wrote:
> Phil Endecott wrote:
>> Yesterday I had a disk-nearly-full problem, and decided to try to resolve 
>> it by moving one large table to a spare disk in a new tablespace:
>>
>> =# create tablespace tempspace location "/db_temp";
>> =# alter table requests set tablespace tempspace;
[snip]
> - Is my idea that these files should have been deleted but weren't
> during the disk-full panic plausible?
>
> - If I do move them away, what will Postgres do if it tries to access
> them and finds they are missing? Is it well-behaved in this case?
>
> - If I move them away, I would try to exercise the database (e.g.
> do variants of "select sum(column1) from table") in some way to make
> sure that it is all functioning. Any suggestions about how best to do
> this?

I'd shut down postgres, rename those files, and then analyzing the relevant 
tables after startup.  Probably also run amcheck against the relevant 
tables' indices.

https://access.crunchydata.com/documentation/amcheck-next/1.5/#interface

-- 
Angular momentum makes the world go 'round.