[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Re: Xen pci device #0
On 30 June 2011 14:57, James Harper <james.harper@xxxxxxxxxxxxxxxx> wrote: > > Are you passing through any pci devices? The main driver (xenpci - > although it is nothing to do with pci passthrough) creates a device node > for everything under the devices key in xenstore and so it creates a > node for a pci passthrough device even though there is no driver for it. Nope I'm only testing PV drivers on this VM, xl pci-list domU gives me an empty table: # xl pci-list XenPVXP Vdev Device # > I don't think that is normal. I see activity on my systems when using > xentop. Just to confirm, am I supposed to change anything in the VM configuration? Even on ioemu, the emulated NIC was hidden and the XenNet device loaded instead, so I assumed everything else would behave similarly. Just did a quick check by changing the lines to: vif = [ 'type=netfront, bridge=xenbr0' ] disk = [ 'phy:/dev/mapper/VMStore-XPPV,xvdb,w', 'file:/XPSP3.iso,xvda:cdrom,r' ] Still the same, xentop reports activity for the network device but not the block device: NAME STATE CPU(sec) CPU(%) MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS VBD_OO VBD_RD VBD_WR VBD_RSECT VBD_WSECT SSID XenPVXP ------ 113 77.6 1038180 6.2 1049600 6.3 2 1 198 3 0 0 0 0 0 0 0 This appears in the QEMU log: Using xvdb for guest's hdb Strip off blktap sub-type prefix to /dev/mapper/VMStore-XPPV (drv 'aio') Using file /dev/mapper/VMStore-XPPV in read-write mode Using xvda for guest's hda Strip off blktap sub-type prefix to /XPSP3.iso (drv 'aio') Using file /XPSP3.iso in read-only mode > Definitely sounds like something is wrong there... are you running the > debug build of the drivers? If so, things are logged to > /var/log/xen/qemu-dm-<domu name>.log. If too much is logged then qemu > tends to throttle the domu which could do things like you describe. > > Have a look in the /var/log/xen/qemu-dm-<domu name>.log file and see if > it is getting a lot of information logged to it. Not running the debug version. But these lines in the log file are suspect: Unknown PV product 2 loaded in guest PV driver build 1 xen be: qdisk-51728: xen be: qdisk-51728: error: unknown operation (255) error: unknown operation (255) > > James > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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