lock mode for ControlFileLock which pg_start_backup uses

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lock mode for ControlFileLock which pg_start_backup uses

От:
Fujii Masao <masao.fujii@gmail.com>
Дата:
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

Re: lock mode for ControlFileLock which pg_start_backup uses

От:
Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp>
Дата:

Re: lock mode for ControlFileLock which pg_start_backup uses

От:
Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
Дата:

Re: lock mode for ControlFileLock which pg_start_backup uses

От:
Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp>
Дата:
FAQ