[dm-devel] Re: Desynchronizing dm-raid1

[Mikulas Patocka]

> No other driver than dm-raid1 
> has problems with this and they wouldn't damp performance because of one 
> driver.

--- so I found that md-raid-[156] recently (2.6.13 or so) added a bitmap 
mode and when this is used (argument --bitmap to mdadm), it is vulnerable 
to this desynchronization bug too. Before, it synced the whole device when 
it crashed without shutdown, so it was OK.

Mikulas