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xen-users
Re: [Xen-users] Xen DomU Communication Problems
Hi Again,
I have been attempting to pass the tape drive through to my domU, but am
having no luck. I added pciback.hide(03:02.0) to my modules line in
menu.lst, and added "pci = [ '03:02.0' ]. I've rebooted the dom0, and now
when I try to start the domU I get the following message:
"Error: pci: PCI Backend does not own device 0000:03:02.0
See the pciback.hide kernel command-line parameter or
bind your slot/device to the PCI backend using sysfs"
Any hints would be appreciated.
Thanks!
Sarah
Sarah Scheibe wrote:
Stephan,
Thank you for your response.
I agree that the ideal solution is to get the tape drive to the domU.
However, I've tried pci passthrough in the past several times and so far
have had absolutely no luck. I'm very open to suggestions as to how I
can make this tape drive accessible to the domU.
~Sarah
Stephan Seitz wrote:
Good Morning,
Depends ;)
I have a Xen machine with a domU that provides backups for our
department. The domU is running Bacula. The dom0 hosts the bacula
storage daemon which communicates with the tape device connected to
the dom0.
I recently moved our file server onto this machine under this dom0.
Prior to this move, backups worked fine on the file server as well as
everything else. However, post move, whenever I attempt to back up
the file server I lose network on both domUs (the backup server and
the file server) until I either kill the bacula storage daemon on the
dom0 or console in to the backup server and kill bacula from there.
After that, networking returns to both domUs immediately.
I've always noticed problems when using load-intensive apps directly
on dom0.
If you're lucky, you've got enough cores and could try to cpu-pin dom0
and
domU's to different, dedicated cores. If your domU's are HVM, you should
check if the netfront modules are loaded and used.
Anyway, I would prefer to look on how to get the tape drive available in
your bacula domU and leave dom0 for managing stuff.
These two domUs are the only domUs on this machine. Networking is
never affected on the dom0, just the domUs. Backing up all other
servers still works just fine.
I am frankly stumped. I am running a debian distribution, and have
tried upgrading the kernel to version 2.6.18 and upgrading to the
most recent Xen hypervisor 3.0.3.1 revision, all without luck in
solving the problem.
If anyone has any ideas or has run into this problem and found a
solution, your advice would be greatly appreciated.
Sincerely,
Sarah
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