[dm-devel] Re: dm: bind new table before destroying old

[Kiyoshi Ueda]

Hi Alasdair,

On 11/12/2009 12:11 AM +0900, Alasdair G Kergon wrote:
> On Wed, Nov 11, 2009 at 03:56:05PM +0900, Kiyoshi Ueda wrote:
>> I believe dm-mpath needs to flush such workqueues in postsuspend.
> 
> Yes - should be an easy change.

OK, I posted the patch.
See: http://patchwork.kernel.org/patch/59556/


>> Also, we need something to block message ioctl to suspended device.
>  
>> As for the message ioctl, I don't have any good idea, but...
>>   - Reject message ioctl to suspended device in dm-ioctl
> 
> I think the crypt target expects to be able to do this to manipulate
> the in-core encryption key.
> 
>>   - Targets must not kick any work influencing external themselves
>>     in their message ioctl handlers.
> 
> So I think we'll need a target-specific approach like that here.

OK, Mike Anderson seems to be working on this.

Thanks,
Kiyoshi Ueda