Make basebackup use low level API and rsync - Mailing list pgsql-general

From wd
Subject Make basebackup use low level API and rsync
Date
Msg-id CABexzmg2KE7J+J8gZUP4+x9ygP_ENw0nR+d2BoMsLOwhxUOtsg@mail.gmail.com
Whole thread Raw
Responses Re: Make basebackup use low level API and rsync  (Michael Paquier <michael.paquier@gmail.com>)
List pgsql-general
hi,

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 ?

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