Re: [COMMITTERS] pgsql: Adjust total size in pg_basebackup progress report when reality
От | Magnus Hagander |
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Тема | Re: [COMMITTERS] pgsql: Adjust total size in pg_basebackup progress report when reality |
Дата | |
Msg-id | CABUevEzcuruyaK7x8MLS-NT5Qubf_u07+ifU44p5tO2RYhYADw@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: [COMMITTERS] pgsql: Adjust total size in pg_basebackup progress report when reality (Fujii Masao <masao.fujii@gmail.com>) |
Список | pgsql-hackers |
On Wed, Aug 17, 2011 at 04:44, Fujii Masao <masao.fujii@gmail.com> wrote: > On Wed, Aug 17, 2011 at 12:00 AM, Magnus Hagander <magnus@hagander.net> wrote: >> Adjust total size in pg_basebackup progress report when reality changes >> >> When streaming including WAL, the size estimate will always be incorrect, >> since we don't know how much WAL is included. To make sure the output doesn't >> look completely unreasonable, this patch increases the total size whenever we >> go past the estimate, to make sure we never go above 100%. > > http://developer.postgresql.org/pgdocs/postgres/app-pgbasebackup.html > ---------------- > Enables progress reporting. Turning this on will deliver an approximate progress > report during the backup. Since the database may change during the backup, > this is only an approximation and may not end at exactly 100%. In particular, > when WAL log is included in the backup, the total amount of data cannot be > estimated in advance, and in this case the progress report will only count > towards the total amount of data without WAL. > ---------------- > > ISTM that the last sentence needs to be changed slightly because this commit > changed the total amount so that it contains the amount of WAL. Indeed it does. Thanks, fixed! -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/
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