| From: | Toru SHIMOGAKI <shimogaki(dot)toru(at)oss(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dan Gorman <dgorman(at)hi5(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: PITR Backups |
| Date: | 2007-06-22 07:41:24 |
| Message-ID: | 467B7D24.3040802@oss.ntt.co.jp |
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| Thread: | |
| Lists: | pgsql-performance |
Joshua D. Drake wrote:
>> - If we don't use hardware level snapshot operation, it takes long time to take
>> a large backup data, and a lot of full-page-written WAL files are made.
>
> Does it? I have done it with fairly large databases without issue.
You mean hardware snapshot? I know taking a backup using rsync(or tar, cp?) as a
n online backup method is not so a big problem as documented. But it just take a
long time if we handle a terabyte database. We have to VACUUM and other batch
processes to the large database as well, so we don't want to take a long time
to take a backup...
Regards,
--
Toru SHIMOGAKI<shimogaki(dot)toru(at)oss(dot)ntt(dot)co(dot)jp>
NTT Open Source Software Center
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