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From:Brad Heintz Date:December 6 2008 3:40pm
Subject:Re: Vexing permissions issue with partitioned CREATE TABLE
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John -

I've seen people confuse MySQL users with OS users, too.  I'm not doing
that, and I understand the difference between MySQL privs and filesystem
permissions.  MySQL is running as the mysql user.  I'm running the query as
MySQL's root.

I am able to create partitioned or non-partitioned tables if I do not
specify a data directory.

I'll try your suggestion about making the filesystem perms more restrictive
- I don't think I've tried that yet.

Thanks for taking the time to respond.

- Brad

On Sat, Dec 6, 2008 at 3:42 AM, John Daisley <
john.daisley@stripped> wrote:

>  Brad, what user are you running the mysql server as? Have you created a
> mysql user and group (or another user and group) to run the server and set a
> user= option in the cnf file?
>
> Are you absolutely sure all necessary files and directories are owned and
> readable/writable only by the mysql user? Setting files and directories to
> 777 will not always solve the issue and is a bug security risk, they must be
> owned and readable/writable only to the mysql user.
>
> Are you able to create non-partitioned tables?
>
> This kind  of problem crops up time and time again on the mysql forums and
> its always filesystem permissions or people confuse mysql users with os
> users or think because they log into mysql as 'root' they have root
> privileges on the box.
>
> Regards,
>
> John
>
> What
>
>
> On Fri, 2008-12-05 at 16:41 -0500, Brad Heintz wrote:
>
>
> Thanks, Martin, but that's not it.  As I mentioned in my email, I'm running
> as MySQL root user with all priv bits set.  I tried your suggestion anyway,
> but no change.
>
> Cheers,
> - Brad
>
> On Fri, Dec 5, 2008 at 4:34 PM, Martin Gainty <mgainty@stripped> wrote:
>
> >  Brad-
> >
> > log into mysql as admin
> > GRANT FILE ON *.* to 'username'@'HOST';
> > logout
> > then login to username@HOST
> > retry FILE operation
> >
> > Martin
> > ______________________________________________
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> >
> >
> >
> >
> > > Date: Fri, 5 Dec 2008 15:44:06 -0500
> > > From: brad.heintz@stripped
> > > To: mysql@stripped
> > > Subject: Vexing permissions issue with partitioned CREATE TABLE
> >
> > >
> > > All -
> > >
> > > Thanks in advance for help with a sticky problem.
> > >
> > > I'm attempting to create a partitioned table thus:
> > >
> > > CREATE TABLE `my_precious_table` (
> > > `id` bigint(20) NOT NULL AUTO_INCREMENT,
> > > `startTimeStamp` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
> > > PRIMARY KEY (`id`,`startTimeStamp`)
> > > ) ENGINE=MyISAM DEFAULT CHARSET=latin1
> > > PARTITION BY RANGE (year(startTimeStamp)) (
> > > PARTITION p0 VALUES LESS THAN (2005) DATA DIRECTORY = '/foo/data_foo'
> > > INDEX DIRECTORY = '/foo/idx_foo' ENGINE = MyISAM,
> > > PARTITION p1 VALUES LESS THAN MAXVALUE DATA DIRECTORY =
> > > '/foo/data_foo' INDEX DIRECTORY = '/foo/idx_foo' ENGINE = MyISAM);
> > >
> > > (This query is pared way down from the original, but still suffers from
> > the
> > > same problem.) Note that there are data and index directories specified
> > for
> > > the individual partitions. This statement was originally generated by a
> > > MySQL instance of version 5.1.22-rc-log, and I'm attempting to run it on
> > > 5.1.29-rc-community.
> > >
> > >
> > >
> > > I get the following error when I attempt to create a table this way:
> > >
> > > ERROR 1 (HY000): Can't create/write to file
> > > '/foo/idx_foo/my_precious_table#P#p0.MYI' (Errcode: 13)
> > >
> > >
> > >
> > > I'm pretty sure it's not a filesystem-level issue, because permissions on
> > > the specified folders are all 777:
> > >
> > > [me@mymachine foo]$ ls -al /foo
> > > total 32
> > > drwxrwxrwx 4 root root 4096 Dec 5 13:56 .
> > > drwxr-xr-x 25 root root 4096 Dec 5 13:55 ..
> > > drwxrwxrwx 2 root root 4096 Dec 5 13:56 data_foo
> > > drwxrwxrwx 2 root root 4096 Dec 5 13:56 idx_foo
> > >
> > >
> > >
> > > I'm also pretty sure it's not a MySQL grants/permissions issue, because
> > I'm
> > > operating as MySQL root with all privilege bits set.
> > >
> > > Other notes:
> > > - I can create the table without the DATA/INDEX DIRECTORY specified, but
> > I
> > > need to place the partitions for this very large table on a separate
> > disk.
> > > - It shouldn't make a difference with everything set to 777, but I've
> > tried
> > > setting the owner/group for the directories to root:root, mysql:mysql,
> > and
> > > myself, just to try it. No change.
> > > - The docs (if I have read everything correctly) indicate that specifying
> > > DATA DIRECTORY and INDEX DIRECTORY per partition in the manner above is
> > > legit, and that attempting to specify them at the table level for a
> > > partitioned table is not.
> > >
> > > I've googled extensively, searched the list archives, and exhausted every
> > > other avenue I could think of before posting to the list, but am no
> > closer
> > > to an answer. Does anyone have any ideas? Have I missed something in the
> > > docs?
> > >
> > > Many thanks,
> > > - Brad Heintz
> > >
> > >
> > > --
> > > Brad Heintz
> > > brad.heintz@stripped
>
> >
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>
>
>
> --
> Brad Heintzbrad.heintz@stripped
>
>
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>


-- 
Brad Heintz
brad.heintz@stripped

Thread
Vexing permissions issue with partitioned CREATE TABLEBrad Heintz5 Dec
  • Re: Vexing permissions issue with partitioned CREATE TABLEFlorin Andrei6 Dec
Re: Vexing permissions issue with partitioned CREATE TABLEceo5 Dec
  • Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz5 Dec
  • Re: Vexing permissions issue with partitioned CREATE TABLEPer Jessen6 Dec
    • Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz7 Dec
    • Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz8 Dec
Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz5 Dec
  • Re: Vexing permissions issue with partitioned CREATE TABLEJohn Daisley6 Dec
    • Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz6 Dec
      • RE: Vexing permissions issue with partitioned CREATE TABLEMartin Gainty6 Dec
        • Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz6 Dec
      • Re: Vexing permissions issue with partitioned CREATE TABLEBrad Heintz7 Dec