Обсуждение: what's stored in pg_tblspc

I am confused, I thought that there were only supposed to be links to  
the actual data in pg_tblspc ?

I have a db defined in a tablspace, but in pg_tblspc there is 1.2G of  
data corrresponding to it?

Dave

Dave Cramer <pg@fastcrypt.com> writes:
> I am confused, I thought that there were only supposed to be links to  
> the actual data in pg_tblspc ?

> I have a db defined in a tablspace, but in pg_tblspc there is 1.2G of  
> data corrresponding to it?

Are you on a system that has symlinks?  Are you sure that whatever tool
you're using to count the space doesn't traverse symlinks?

IIRC, there is a corner case during replay-from-WAL where we'll create
a plain directory under pg_tblspc to substitute for a symlink (if the
symlink isn't there and we don't have the information to recreate it).
I don't believe it's easy to get into that state though.
        regards, tom lane

Tom,

Thanks, this was driver error....

Dave
On 13-Feb-06, at 9:26 AM, Tom Lane wrote:

> Dave Cramer <pg@fastcrypt.com> writes:
>> I am confused, I thought that there were only supposed to be links to
>> the actual data in pg_tblspc ?
>
>> I have a db defined in a tablspace, but in pg_tblspc there is 1.2G of
>> data corrresponding to it?
>
> Are you on a system that has symlinks?  Are you sure that whatever  
> tool
> you're using to count the space doesn't traverse symlinks?
>
> IIRC, there is a corner case during replay-from-WAL where we'll create
> a plain directory under pg_tblspc to substitute for a symlink (if the
> symlink isn't there and we don't have the information to recreate it).
> I don't believe it's easy to get into that state though.
>
>             regards, tom lane
>