bind-mounting files in mock

[Jay Greguske]

Hi Clark,

If you're bind mounting a file, you have to bind it to an existing file, 
not a directory. Try touching /dev/myloop first, and then mounting the 
real loop device to it.

Thanks,
-jay


Clark Williams wrote:
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> On Wed, 18 Mar 2009 14:52:35 -0400
> Jay Greguske <jgregusk at redhat.com> wrote:
>
>   
>> Hello,
>>
>> While trying to get livecd-creator working in a mock-built chroot, I 
>> discovered that only directories could be bind-mounted using the 
>> bind_mount plugin. I made a few code changes and attached a patch for 
>> your consideration that enables the bind-mounting of files. Like 
>> directories, the bind-mounting of files will require 
>> 'internal_dev_setup' be set to False, otherwise the mount command will fail.
>>
>> In the chroot configuration file the following syntax would be allowed 
>> (which looks just like that which was used for bind-mounting directories):
>>
>> config_opts['plugin_conf']['bind_mount_opts']['files'].append(('/dev/loop0', 
>> '/dev/loop0'))
>>
>> Please let me know what you think, and thanks in advance for your time!
>>
>> - Jay
>>     
>
> Jay,
>
> Finally got some time to pull in mock patches and work on bugs. Sorry
> it's taken this long...
>
> I'm not seeing how your stuff would work. A bind-mount only works on
> directories, not files. If I try to bind-mount /dev/loop0 somewhere by
> hand I get the following:
>
> $ mkdir -p /tmp/foo && cd /tmp/foo
> $ sudo mount -n --bind /dev/loop0 .
> mount: Not a directory
> $ mkdir dev
> $ sudo mount -n --bind /dev/loop0 dev
> mount: Not a directory
>
> What am I missing here?
>
> Clark
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