| From: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com> |
|---|---|
| To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Cc: | valgog <valgog(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: Re: BUG #5602: Recovering from Hot-Standby file backup leads to the currupted indexes |
| Date: | 2010-08-12 05:15:08 |
| Message-ID: | AANLkTi=a4pyk2uUNG5LAKoumkjiOjZuD4n3_RV8Q1jHD@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Fri, Aug 6, 2010 at 7:50 AM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
> The procedure used does differ from that documented. However, IMHO the
> procedure *documented* is *not* safe and could lead to corrupt indexes
> in the way described, since the last recovered point might be mid-way
> between two halves of an index split record, which will never be
> corrected during HS.
An index split record is replayed by two calls of rm_redo()? If not,
we don't need to worry about the above since the last recovered point
which pg_last_xlog_replay_location() returns is updated after every
rm_redo().
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
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