On 11/2/18 10:49 AM, John Snow wrote:
On 11/02/2018 04:11 AM, Dongli Zhang wrote:
Hi,
Is there any way to emulate I/O timeout on qemu side (not fault injection in VM
kernel) without modifying qemu source code?
For instance, I would like to observe/study/debug the I/O timeout handling of
nvme, scsi, virtio-blk (not supported) of VM kernel.
Is there a way to trigger this on purpose on qemu side?
Thank you very much!
Dongli Zhang
I don't think the blkdebug driver supports arbitrary delays right now.
Maybe we could augment it to do so?
(I thought someone already had, but maybe it wasn't merged?)
Aha, here:
https://lists.gnu.org/archive/html/qemu-devel/2018-08/msg05297.html
V2: https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg00394.html
Let's work from there.
I've got updates to that patch series that fell on the floor due to
other competing things. I'll get some screen time this weekend to work
on them and submit v3.
/marc
