Hi all, We're using qemu export md-raid to guest OS, and we saw deadlock on MD(which is already fixed by Neil), please see thread below: > http://marc.info/?l=linux-raid&m=137894040228125&w=2
As Neil suggested it would be good for userspace applications to call open() with O_EXCL flag, to avoid such MD hanging problems at the begining. And we checked qemu, it looks it doesn't include O_EXCL flag when open block device. After search in the mail list we found there are a similar discussion: https://lists.nongnu.org/archive/html/qemu-devel/2011-04/msg00722.html > To O_EXCL or not to O_EXCL open host_cdrom Which looks prefer enable O_EXCL, but I checked latest qemu tree, there no such code, could anyone give comments on this? Best regards, Jack
