Re: Make basebackup use low level API and rsync

On Tue, Apr 22, 2014 at 1:28 PM, wd <wd(at)wdicc(dot)com> wrote:

> I'v try to make a base backup use pg_start_backup, pg_stop_backup and
> rsync, but failed.
>
> After run select pg_start_backup('label') on db server, I run rsync on
> backup server, and got some errors like 'file has vanished: xxxx', think
> this should be ok since it's documented in the manual. Then run select
> pg_stop_backup() to end the backup.
>
> But when I try to use this backup to restore to a specific time on backup
> server, got errors bellow:
>
> [ 2014-04-11 20:50:47.610 CST]LOG: restored log file
> "00000001000005FF000000F8" from archive
> [ 2014-04-11 20:50:56.698 CST]LOG: restored log file
> "00000001000005FF000000F9" from archive
> [ 2014-04-11 20:51:05.552 CST]LOG: restored log file
> "00000001000005FF000000FA" from archive
> [ 2014-04-11 20:51:16.171 CST]LOG: restored log file
> "00000001000005FF000000FB" from archive
> [ 2014-04-11 20:51:20.785 CST]WARNING: specified item offset is too
> large
> [ 2014-04-11 20:51:20.785 CST]CONTEXT: xlog redo insert: rel
> 1663/1/12633; tid 1/15
> [ 2014-04-11 20:51:20.785 CST]PANIC: btree_insert_redo: failed to add
> item
> [ 2014-04-11 20:51:20.785 CST]CONTEXT: xlog redo insert: rel
> 1663/1/12633; tid 1/15
> [ 2014-04-11 20:51:20.903 CST]LOG: startup process (PID 4758) was
> terminated by signal 6: Aborted
> [ 2014-04-11 20:51:20.903 CST]LOG: terminating any other active server
> processes
>
> We do this base backup everyday, and the error occur sometimes, not always
> happen. I think it's must something wrong in our operations, anyone know
> why this happen? May be we should not use rsync or there is something
> impotent we missed ?
>
What is the version used? Recovery is not able to handle properly the redo
for an XLOG record related to btree.
--
Michael