[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Xen DomU Communication Problems
Thank you, that helped at least part of the problem.I no longer get an error message when trying to create the domU, and it appears that the device is getting passed in. However, dmesg on the domU gives me "PCI: Enabling device 0000:00:00.0 (0000 -> 0003) scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0 <Adaptec 29160 Ultra160 SCSI adapter> aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs Unable to handle kernel NULL pointer dereference at 0000000000000078 RIP: [<ffffffff880043a2>] :scsi_mod:scsi_calculate_bounce_limit+0x15/0x49 PGD 20750067 PUD 20751067 PMD 0 Oops: 0000 [1] SMP CPU 0 Modules linked in: aic7xxx scsi_transport_spi scsi_mod Pid: 510, comm: modprobe Not tainted 2.6.18-6-xen-amd64 #1RIP: e030:[<ffffffff880043a2>] [<ffffffff880043a2>] :scsi_mod:scsi_calculate_bounce_limit+0x15/0x49" .... followed by a call trace, etc. The device does not show up in /dev. I will keep at it. ~Sarah Todd Deshane wrote: Hi,On Feb 19, 2008 11:03 AM, Sarah Scheibe <scheibe@xxxxxxxxxxxx <mailto:scheibe@xxxxxxxxxxxx>> wrote: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: I think you have to fix your pciback.hide line to be: pciback.hde=(03:02.0) You may also want to add pciback.permissive to that line.Todd"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 *MailScanner warning: numerical links are often malicious:* 3.0.3.1 <http://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 >>> >>> _______________________________________________ >>> Xen-users mailing list >>> Xen-users@xxxxxxxxxxxxxxxxxxx <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx> >>> http://lists.xensource.com/xen-users >> >> > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx <mailto:Xen-users@xxxxxxxxxxxxxxxxxxx> http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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