Hi, Yes, I've did this echo "none /proc/xen xenfs defaults 0 0">>/etc/fstab to add xenfs mount entry just after I installed xen。 Actually I was following this XenParavirtOps direction here: http://wiki.xensource.com/xenwiki/XenParavirtOps to install and configure xen 4.1.0 with kernel 2.6.39 I did all of those checks: # cat /proc/misc …… 60 xen/gntalloc 61 xen/gntdev 62 xen/evtchn …… #ls -la /dev/xen total 0 drwxr-xr-x 2 root root 100 2011-04-18 20:36 . drwxr-xr-x 12 root root 13780 2011-04-18 20:36 .. crw-rw---- 1 root root 10, 62 2011-04-18 20:36 evtchn crw-rw---- 1 root root 10, 60 2011-04-18 20:36 gntalloc crw-rw---- 1 root root 10, 61 2011-04-18 20:36 gntdev But "lsmod | grep -i xen" shows nothing, and I was told that "module xen_gntdev/xen_evtchn not found" when I try to load these modules by "modprobe xen-gntdev/xen-evtchn". 2011-04-18 Wishes Ruozeng W 发件人： Pasi K鋜kk鋓nen 发送时间： 2011-04-18 19:00:03 收件人： ruozeng.w 抄送： xen-devel 主题： Re: [Xen-devel] Xend cannot start On Mon, Apr 18, 2011 at 04:25:23PM +0800, ruozeng.w wrote: > Host OS: Ubuntu 8.04 server > XEN: 4.1.0 > Kernel: 2.6.39-rc3 > > When xend is starting, it logged this: > Hello, Did you check: http://wiki.xen.org/xenwiki/XenCommonProblems#head-26434581604cc8357d9762aaaf040e8d87b37752 -- Pasi > /var/log/xen/xend-debug.log: > > Xend started at Thu Apr 14 17:39:00 2011. > cat: /sys/bus/scsi/devices/host0/vendor: No such file or directory > cat: /sys/bus/scsi/devices/host0/model: No such file or directory > cat: /sys/bus/scsi/devices/host0/type: No such file or directory > cat: /sys/bus/scsi/devices/host0/rev: No such file or directory > cat: /sys/bus/scsi/devices/host0/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/host1/vendor: No such file or directory > cat: /sys/bus/scsi/devices/host1/model: No such file or directory > cat: /sys/bus/scsi/devices/host1/type: No such file or directory > cat: /sys/bus/scsi/devices/host1/rev: No such file or directory > cat: /sys/bus/scsi/devices/host1/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/host2/vendor: No such file or directory > cat: /sys/bus/scsi/devices/host2/model: No such file or directory > cat: /sys/bus/scsi/devices/host2/type: No such file or directory > cat: /sys/bus/scsi/devices/host2/rev: No such file or directory > cat: /sys/bus/scsi/devices/host2/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/host3/vendor: No such file or directory > cat: /sys/bus/scsi/devices/host3/model: No such file or directory > cat: /sys/bus/scsi/devices/host3/type: No such file or directory > cat: /sys/bus/scsi/devices/host3/rev: No such file or directory > cat: /sys/bus/scsi/devices/host3/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/host4/vendor: No such file or directory > cat: /sys/bus/scsi/devices/host4/model: No such file or directory > cat: /sys/bus/scsi/devices/host4/type: No such file or directory > cat: /sys/bus/scsi/devices/host4/rev: No such file or directory > cat: /sys/bus/scsi/devices/host4/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/host5/vendor: No such file or directory > cat: /sys/bus/scsi/devices/host5/model: No such file or directory > cat: /sys/bus/scsi/devices/host5/type: No such file or directory > cat: /sys/bus/scsi/devices/host5/rev: No such file or directory > cat: /sys/bus/scsi/devices/host5/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/target2:0:0/vendor: No such file or directory > cat: /sys/bus/scsi/devices/target2:0:0/model: No such file or directory > cat: /sys/bus/scsi/devices/target2:0:0/type: No such file or directory > cat: /sys/bus/scsi/devices/target2:0:0/rev: No such file or directory > cat: /sys/bus/scsi/devices/target2:0:0/scsi_level: No such file or directory > cat: /sys/bus/scsi/devices/target3:0:0/vendor: No such file or directory > cat: /sys/bus/scsi/devices/target3:0:0/model: No such file or directory > cat: /sys/bus/scsi/devices/target3:0:0/type: No such file or directory > cat: /sys/bus/scsi/devices/target3:0:0/rev: No such file or directory > cat: /sys/bus/scsi/devices/target3:0:0/scsi_level: No such file or directory > > Someone said that it is because the kernel option CONFIG_XEN_DEV_EVTCHN > should be set as 'y' but not 'm', so I checked my linux kernel > configuration, and found it is set as 'y'. > > I can find /sys/bus/scsi/devices/host0/target0:0:0:0/0:0:0:0/vendor, or > /sys/bus/scsi/devices/host0/target0:0:0:0/0:0:0:0/scsi_device/0:0:0:0/device/vendor, > but definitely no /sys/bus/scsi/devices/host0/vendor > > Why this happen? And how can I fix this? > > Thanks. > > > 2011-04-18 > > -------------------------------------------------------------------------- > > Wishes > Ruozeng W > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel