[Qemu-devel] [Bug 811593] [NEW] Loading kernel 3.0.0-5-generic under Xen 4.1 doesn't create /dev/xen/gntdev

[Boris Derzhavets]

Public bug reported:

To fix the issue i added to /etc/modules :
xen-gntdev
xen-netback
xen-blkback

Otherwise , "lsmod | grep xen"  doesn't report all three of them loaded.
It's impossible to create PV domain. Usual report " vif(0) cannot be connected, 
hotplug scripts not working"
I would guess  system  kernel' s  .config is incorrect.

Working configuration (after Dom0 kernel gets loaded) should look like :
# ls -l /dev/xen
total 0
crw------- 1 root root 10, 55 2011-07-16 18:33 evtchn
crw------- 1 root root 10, 56 2011-07-16 18:33 gntdev
# lsmod | grep xen
xen_evtchn             13172  1
xenfs                  18311  1
xen_blkback            23177  0 [permanent]
xen_netback            27854  0 [permanent]
xen_gntdev             17676  0

** Affects: ubuntu-xen
     Importance: Undecided
         Status: New

** Summary changed:

- Loading kernel 3.0.0-5-generic under Xen 4.1 doesn't create /dev/xen/gnttab
+ Loading kernel 3.0.0-5-generic under Xen 4.1 doesn't create /dev/xen/gntdev

** Description changed:

  To fix the issue i added to /etc/modules :
  xen-gntdev
  xen-netback
  xen-blkback
  
  Otherwise , "lsmod | grep xen"  doesn't report all three of them loaded.
  It's impossible to create PV domain. Usual report " vif(0) cannot be 
connected, hotplug scripts not working"
  I would guess  system  kernel' s  .config is incorrect.
  
- Working config should look like :
+ Working configuration (after Dom0 kernel gets loaded) should look like :
  # ls -l /dev/xen
  total 0
  crw------- 1 root root 10, 55 2011-07-16 18:33 evtchn
  crw------- 1 root root 10, 56 2011-07-16 18:33 gntdev
  # lsmod | grep xen
- xen_evtchn             13172  1 
- xenfs                  18311  1 
+ xen_evtchn             13172  1
+ xenfs                  18311  1
  xen_blkback            23177  0 [permanent]
  xen_netback            27854  0 [permanent]
  xen_gntdev             17676  0

** Project changed: qemu => ubuntu-xen

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https://bugs.launchpad.net/bugs/811593

Title:
  Loading kernel 3.0.0-5-generic under Xen 4.1 doesn't create
  /dev/xen/gntdev

Status in Xen for Ubuntu:
  New

Bug description:
  To fix the issue i added to /etc/modules :
  xen-gntdev
  xen-netback
  xen-blkback

  Otherwise , "lsmod | grep xen"  doesn't report all three of them loaded.
  It's impossible to create PV domain. Usual report " vif(0) cannot be 
connected, hotplug scripts not working"
  I would guess  system  kernel' s  .config is incorrect.

  Working configuration (after Dom0 kernel gets loaded) should look like :
  # ls -l /dev/xen
  total 0
  crw------- 1 root root 10, 55 2011-07-16 18:33 evtchn
  crw------- 1 root root 10, 56 2011-07-16 18:33 gntdev
  # lsmod | grep xen
  xen_evtchn             13172  1
  xenfs                  18311  1
  xen_blkback            23177  0 [permanent]
  xen_netback            27854  0 [permanent]
  xen_gntdev             17676  0

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