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From: Fujii Masao on 8 Mar 2010 20:33
Hi,

Currently pg_start_backup() accesses the shared ControlFile
by using ControlFileLock with LW_EXCLUSIVE lock mode. But
since that access is read-only operation, LW_SHARED should
be chosen instead of LW_EXCLUSIVE.

The attached patch changes the lock mode which pg_start_backup()
uses. Is it worth applying this patch?

Regards,

--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
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