[Xen-users] raid10 + lvm + domU NoGo?

[henry ritzlmayr <xen-list@xxxxxx>]

Hi list, 

I have a fully updated CentOS 5.2 (Dom0+DomU). I wanted to do some
performance tests with Databases within a DomU (compare raid-levels).
>From the theoretical point of view raid10 should be best, but I can´t
even start the DomU when the lv sits on a raid10.  

The Error I get within Dom0 is (several of those):

raid10_make_request bug: can't convert block across chunks or bigger
than 64k 1024000507 3

The DomU sees the disk just as a defekt one. 

Changing from phy to tap:aio gets the DomU running but performancewise
this is not the solution I am seeking. 

My google vodoo brought up: 

http://www.issociate.de/board/post/485110/Bug(?)_in_raid10_(raid10,f2_-_lvm2_-_xen).html

http://www.issociate.de/board/post/423708/raid10_make_request_bug:_can't_convert_block_across_chunks_or_bigger_%5B...%5D.html

https://bugzilla.redhat.com/show_bug.cgi?id=224077

https://bugzilla.redhat.com/show_bug.cgi?id=223947

So for me it looks like this is still a NoGo - right?

cheers 
Henry


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