From: Michael Widenius
Date: June 24 2009 2:44pm
Subject: Re: Error of the day: ER_CANT_CREATE_FILE
List-Archive: http://lists.mysql.com/internals/36980
Message-Id: <19010.15321.507255.642058@narttu.askmonty.org>
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Hi!

>>>>> "Davi" == Davi Arnaut <Davi.Arnaut@stripped> writes:

Davi> Hi Paul,
Davi> On 6/13/09 12:09 PM, Paul DuBois wrote:
>> http://dev.mysql.com/doc/refman/5.1/en/error-messages-server.html#error_er_cant_create_file:

Davi> BTW, this page does not list errors declared within the mysys library, 
Davi> yet the server might return some of then to a client.

Davi> The list of mysys errors is declared in include/mysys_err.h and the 
Davi> messages in mysys/errors.c (there is also some bits in mysys/errors.c).

>> Error: 1004 SQLSTATE: HY000 (ER_CANT_CREATE_FILE)
>> 
>> Message: Can't create file '%s' (errno: %d)
>> 
>> 
>> Likely cause:
>> * Server trying to create file in which it has no write permission?
>> * What else?

Davi> Currently, this error can only be thrown when copying a .frm file over 
Davi> to a new location fails. More precisely, it can only be thrown during 
Davi> the execution of a CREATE TABLE dst LIKE src statement when the server 
Davi> tries to copy the source table .frm file to the destination table .frm file.

Actually it can happen for any 'create file' event that the server
executes.

Some examples:

- For a storage handler that uses MySQL (like MyISAM) when creating a file
- When creating a log or trace file
- SELECT into outfile
etc

The causes for this could be any of the reasons why a 'open()' call
fails.  Some examples:

- Not having right permission to the file or directory
- Directory or unit not existing
- Hardware / software trouble

etc.

Regards,
Monty