Re: debian software raid1

On Wed, 20 Apr 2011 12:28:45 +0200 Asdo [off-list ref] wrote:

On 04/20/11 00:51, NeilBrown wrote:

quoted

If there was such a deadlock, it would be a serious bug.   I don't believe
such a bug exists (but hey - I keep finding bugs in this code, when I'm not
busy writing new bugs, so I guess it could crash you machine and kill your
cat).

I am aware that raids 0,1,10 do not copy the buffer so I don't think 
there is risk of deadlock...

Raids 456 do copy the buffer... but the destination buffers are 
preallocated, right?

Correct - destination buffers - when used - are preallocated.

If this were not the case you would get deadlocks in normal usage without
having to wait for suspend/resume to trigger them.

NeilBrown