From mboxrd@z Thu Jan  1 00:00:00 1970
From: Milan Broz <mbroz@redhat.com>
Subject: Re: dm: bind new table before destroying old
Date: Wed, 11 Nov 2009 16:14:59 +0100
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To: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>, dm-devel@redhat.com, Mike Snitzer <snitzer@redhat.com>, Mikulas Patocka <mpatocka@redhat.com>, Jonathan Brassow <jbrassow@redhat.com>, Jun'ichi N
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On 11/11/2009 04:11 PM, 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.

similar problem is probably in crypt target, I'll check it later.

>> 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.

yes, crypt target must be able to process messages when in suspended state.

Milan