| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)heroku(dot)com> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Jim Nasby <Jim(dot)Nasby(at)bluetreble(dot)com>, "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Checksums by default? |
| Date: | 2017-01-26 00:19:28 |
| Message-ID: | CAB7nPqQYGnr_d-QJgCBr_7cxediv8zk29pBC5az=PSz1h+=7kQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Jan 26, 2017 at 9:14 AM, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
> On Wed, Jan 25, 2017 at 3:30 PM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
>> As it is, there are backup solutions which *do* check the checksum when
>> backing up PG. This is no longer, thankfully, some hypothetical thing,
>> but something which really exists and will hopefully keep users from
>> losing data.
>
> Wouldn't that have issues with torn pages?
Why? What do you foresee here? I would think such backup solutions are
careful enough to ensure correctly the durability of pages so as they
are not partially written.
--
Michael
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