Re: pg_restore: [custom archiver] dumping a specific TOC data block out of order is not supported without ID on this input stream (fseek required) - Mailing list pgsql-general

Well I've ony just gotten round to taking another look at this, response inline below:

--- On Fri, 30/4/10, Tom Lane <tgl@sss.pgh.pa.us> wrote:

> Glyn Astill <glynastill@yahoo.co.uk>
> writes:
> > The schema is fairly large, but I will try.
>
> My guess is that you can reproduce it with not a lot of
> data, if you can
> isolate the trigger condition.
>

Hmm, tried reducing the amount of data and the issue goes away. Could this indicate some issue with the file, like an
issuewith it's size (~~ 5gb)? Or could it be an issue with the data itself? 

> > One thing I forgot to mention is that in the restore
> script I drop the indexes off my tables between restoring
> the schema and the data. I've always done this to speed up
> the restore, but is there any chance this could be causing
> the issue?
>
> Possibly.  I think there must be *something* unusual
> triggering the
> problem, and maybe that is it or part of it.

I've removed this faffing with indexes inbetween but the problem still persists.

>
> > I guess what would help is some insight into what the
> error message means.
>
> It's hard to tell.  The likely theories are (1) we're
> doing things in an
> order that requires seeking backwards in the file, and for
> some reason
> pg_restore thinks it can't do that; (2) there's a bug
> causing the code
> to search for a item number that isn't actually in the
> file.
>
> One of the previous reports actually turned out to be pilot
> error: the
> initial dump had failed after emitting a partially complete
> file, and
> so the error from pg_restore was essentially an instance of
> (2).  But
> with three or so reports I'm thinking there's something
> else going on.
>

So I'm still at a loss as to why it's happening.

I've tried to dig a little deeper (and I may just be punching thin air here) by adding the value of id into the error
messageat die_horribly() and it gives me id 7550 which is the first table in the TOC entry list when I do a pg_restore
-l,everything above it is a sequence.  

Here's a snip of pg_restore -l:

7775; 0 0 SEQUENCE SET website ui_content_id_seq pgcontrol
7550; 0 22272 TABLE DATA _main_replication sl_archive_counter slony

And the output if run it under gdb:

GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...
(gdb) set args -U postgres --disable-triggers -j 4 -c -d SEE Way5a-pgsql-SEE-data.gz
(gdb) break die_horribly
Breakpoint 1 at 0x4044b0: file pg_backup_archiver.c, line 1384.
(gdb) run
Starting program: /usr/local/pgsql/bin/pg_restore -U postgres --disable-triggers -j 4 -c -d SEE Way5a-pgsql-SEE-data.gz
[Thread debugging using libthread_db enabled]
[New Thread 0x7f72480eb700 (LWP 4335)]
pg_restore: [custom archiver] dumping a specific TOC data block out of order is not supported without ID on this input
stream(fseek required) 
hasSeek = 1 dataState = 1 id = 7550
[Switching to Thread 0x7f72480eb700 (LWP 4335)]

Breakpoint 1, die_horribly (AH=0x61c210, modulename=0x4171f6 "archiver", fmt=0x4167d8 "worker process failed: exit code
%d\n")at pg_backup_archiver.c:1384 
1384    {
(gdb) pg_restore: [custom archiver] dumping a specific TOC data block out of order is not supported without ID on this
inputstream (fseek required) 
hasSeek = 1 dataState = 1 id = 7550
pg_restore: [custom archiver] dumping a specific TOC data block out of order is not supported without ID on this input
stream(fseek required) 
hasSeek = 1 dataState = 1 id = 7550
pg_restore: [custom archiver] dumping a specific TOC data block out of order is not supported without ID on this input
stream(fseek required) 
hasSeek = 1 dataState = 1 id = 7550

(gdb) bt
#0  die_horribly (AH=0x61c210, modulename=0x4171f6 "archiver", fmt=0x4167d8 "worker process failed: exit code %d\n") at
pg_backup_archiver.c:1384
#1  0x0000000000408f14 in RestoreArchive (AHX=0x61c210, ropt=0x61c0d0) at pg_backup_archiver.c:3586
#2  0x0000000000403737 in main (argc=10, argv=0x7fffffffd5b8) at pg_restore.c:380
(gdb) step
pg_restore: [archiver] worker process failed: exit code 1

Program exited with code 01.


Any further ideas of where I should dig would be appreciated.

Thanks
Glyn