Thread: How to hack the storage component?

How to hack the storage component?

From
wang chaoyong
Date:
Hi folks,

    Currently, I'm trying to read the storage component, since it's biased towards the lower layer, seems more difficult to understand and debug. All the materials I have found are the original papers on http://db.cs.berkeley.edu, I'm wondering how much it have been changed since Postgres. Could you please give me some suggestions? Thanks.

Regards.
Chaoyong Wang

Re: How to hack the storage component?

From
Heikki Linnakangas
Date:
On 18.01.2013 11:02, wang chaoyong wrote:
> Hi folks,
>
>      Currently, I'm trying to read the storage component, since it's biased
> towards the lower layer, seems more difficult to understand and debug. All
> the materials I have found are the original papers on
> http://db.cs.berkeley.edu, I'm wondering how much it have been changed
> since Postgres. Could you please give me some suggestions? Thanks.

It has changed a lot since the Berkeley times. I doubt the original
papers are of much use anymore in understanding modern PostgreSQL.
You'll want to read src/backend/storage/smgr/README, although there
isn't much there. Also make sure you read the "Database Physical
Storage" section in the user manual,
http://www.postgresql.org/docs/devel/static/storage.html.

- Heikki



Re: [HACKERS] How to hack the storage component?

From
wang chaoyong
Date:
Thank you very much.
Based on your information, I find an interesting page including your comment: http://code.metager.de/source/history/postgresql/src/backend/storage/smgr/README.
Seems all guys are in the core team, really nice job.
Thanks again for your kind reply and "2 phase commit" contribution.

Regards.
Chaoyong Wang




On Fri, Jan 18, 2013 at 5:26 PM, Heikki Linnakangas <hlinnakangas@vmware.com> wrote:
On 18.01.2013 11:02, wang chaoyong wrote:
Hi folks,

     Currently, I'm trying to read the storage component, since it's biased
towards the lower layer, seems more difficult to understand and debug. All
the materials I have found are the original papers on
http://db.cs.berkeley.edu, I'm wondering how much it have been changed
since Postgres. Could you please give me some suggestions? Thanks.

It has changed a lot since the Berkeley times. I doubt the original papers are of much use anymore in understanding modern PostgreSQL. You'll want to read src/backend/storage/smgr/README, although there isn't much there. Also make sure you read the "Database Physical Storage" section in the user manual, http://www.postgresql.org/docs/devel/static/storage.html.

- Heikki