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xen-users
Re: [Xen-users] Driver/Backend Domains
No luck, but thanks for the tip - I did only have 8 before, and now I'm
up to 256.
Is anyone familiar with the execution path of xm block-attach, so that I
might be able to trace what's going on and where it's failing? I've
followed it through the source until xm sends the request to xend, and
that's where I lose it.
Fasiha Ashraf wrote:
"Error: Device 51744 (vbd) could not be connected. Hotplug
scripts not working.", which is quite vague."
You might have smaller no of loopback devices in your domain. By the
default there are only 8 loops available. but you can increase the
limit up to 256 max this way:-
1- Add this line to /etc/modprobe.conf
options loop max_loop=256
2- The other way is to add 'loop' to /etc/modules
and add the same above mentioned option in /etc/modprobe.d/options
Regards,
Fasiha Ashraf
--- On *Fri, 3/7/09, Matthew Mallozzi /<matt.mallozzi@xxxxxxxxxx>/* wrote:
From: Matthew Mallozzi <matt.mallozzi@xxxxxxxxxx>
Subject: [Xen-users] Driver/Backend Domains
To: xen-users@xxxxxxxxxxxxxxxxxxx
Date: Friday, 3 July, 2009, 7:20 AM
Forgot to mention - I also put the option "blkif=1" in the
configuration file for the intended driver domain.
----------------------
What is required for a PV domU to act as a driver domain for a block
device? My goal is to attach a disk image file located within the
domU
to dom0 as a block device. The command I am running in dom0 is
xm block-attach 0 file:/root/hdisk.img /dev/xvdb w 2,
where hdisk.img is the disk image file in domU, xvdb is the name
of the
intended device node in dom0, and 2 is the domain ID of the domU.
My domU is a PV guest with its kernel replaced by the kernel from
dom0,
and I have copied over both /etc/xen/scripts and
/usr/lib/python2.4/site-packages/xen from dom0 to the guest. However,
whenever I attempt the above command, it sits for a while and then
returns with "Error: Device 51744 (vbd) could not be connected.
Hotplug
scripts not working.", which is quite vague.
Thank you!
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