Simon Riggs wrote: > On Fri, 2006-04-28 at 15:57 +0000, Steve Burrows wrote: >> I am struggling to find an acceptable way of backing up a PostgreSQL >> 7.4 database. Depending on your OS and hardware setup, you may have other options, such as Veritas snapshotting. It is expensive, but saves time. >> >> The database is quite large, currently it occupies about 180GB, >> divided into two elements, a set of active tables and a set of archive >> tables which are only used for insertions. >> >> I ran pg_dump -Fc recently, it took 23.5 hours to run, and output a >> single file of 126GB. Obviously as the database continues to grow it >> will soon be so large that it cannot be pg_dumped within a day. >> Running rsync to do a complete fresh copy of the pgsql file structure >> took 4 hours, but later that day running another iteration of rsync >> (which should have only copied changed files) took 3 hours, and I >> cannot afford to have the db down that long. >> >> Anybody with any ideas? > > You need not backup the whole database in one go. > > You can copy only changed data out of the tables using your knowledge of > the mail store. That way you'll not need to have such a long running > backup and it won't be so large either. You can then reassemble the > pieces later into a new table in case of recovery. > -- ---------------------------------------------------------------------------- Naomi Walker Chief Information Officer Eldorado Computing, Inc. nwalker@xxxxxxxxxxxx 602-604-3100 ---------------------------------------------------------------------------- What lies behind us and what lies before us are tiny matters compared to what lies within us. - William Morrow ---------------------------------------------------------------------------- -- CONFIDENTIALITY NOTICE -- Information transmitted by this e-mail is proprietary to MphasiS and/or its Customers and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If you are not the intended recipient or it appears that this mail has been forwarded to you without proper authority, you are notified that any use or dissemination of this information in any manner is strictly prohibited. In such cases, please notify us immediately at mailmaster@xxxxxxxxxxx and delete this mail from your records.
