[Xen-devel] [XEN]tap-err happens to me

[harryxiyou <harryxiyou@xxxxxxxxx>]

Hi list,

I use xen-4.1.1 for our project. We made a patch for xen-4.1.1 for supporting
our 'HLFS' driver. (The patch is in the attachment, and our project's sources is
located here: http://code.google.com/p/cloudxy/).After adding this patch i do
following  commands with xen (Note, change the drivers/Makefile and
control/Makefile for HLFS directory directing to our hlfs source dir).

# pwd
/root/xen-4.1.1/tools

#make clean
...
#make
...
#make install

And then i restart xencommons and xend.

#/etc/init.d/xencommons restart
#/etc/init.d/xend restart
# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0   909     2     r-----    452.4
# xm info
host                   : local00212201021a.zte.com.cn
release                : 2.6.32.39
version                : #1 SMP Sun Feb 19 11:21:09 CST 2012
machine                : x86_64
nr_cpus                : 2
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 1795
hw_caps                :
bfebfbff:20100800:00000000:00000940:0000e31d:00000000:00000001:00000000
virt_caps              :
total_memory           : 984
free_memory            : 60
free_cpus              : 0
xen_major              : 4
xen_minor              : 1
xen_extra              : .1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
xen_commandline        :
cc_compiler            : gcc version 4.1.2 20080704 (Red Hat 4.1.2-51)
cc_compile_by          : root
cc_compile_domain      : zte.com.cn
cc_compile_date        : Thu Feb 23 23:32:01 CST 2012
xend_config_format     : 4

At last, i do tap-ctl to create our hlfs type device node.

# tap-ctl create -a hlfs:local:///tmp/testenv/testfs
/dev/xen/blktap-2/tapdev0

I see the /var/log/messages like following:

# cat /var/log/messages | tail -10
Feb 24 02:42:43 local00212201021a avahi-daemon[4144]: Joining mDNS
multicast group on interface peth0.IPv6 with address
fe80::221:22ff:fe01:21a.
Feb 24 02:42:43 local00212201021a avahi-daemon[4144]: Registering new
address record for fe80::221:22ff:fe01:21a on peth0.
Feb 24 02:42:43 local00212201021a avahi-daemon[4144]: New relevant
interface eth0.IPv6 for mDNS.
Feb 24 02:42:43 local00212201021a avahi-daemon[4144]: Joining mDNS
multicast group on interface eth0.IPv6 with address
fe80::221:22ff:fe01:21a.
Feb 24 02:42:43 local00212201021a avahi-daemon[4144]: Registering new
address record for fe80::221:22ff:fe01:21a on eth0.
Feb 24 02:42:47 local00212201021a dhclient: DHCPREQUEST on eth0 to
255.255.255.255 port 67
Feb 24 02:42:47 local00212201021a dhclient: DHCPACK from 192.168.1.1
Feb 24 02:42:47 local00212201021a NET[31575]: /sbin/dhclient-script :
updated /etc/resolv.conf
Feb 24 02:42:47 local00212201021a dhclient: bound to 192.168.1.4 --
renewal in 32898 seconds.
Feb 24 02:52:17 local00212201021a tap-ctl: tap-err:tap_ctl_wait:
tapdisk2[31763] failed, status 127

The log says tapdisk2 happens to an error.

Can anyone give me some suggestions to deal with this problem?




-- 
Thanks
Harry Wei

Attachment: cloudxy-0.1.patch
Description: Binary data

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