[Xen-users] Cdrom not working on Lucid domU

[Fantu <fantonifabio@xxxxxxxxxx>]

I need to add physical cdrom on domU windows and ubuntu.
I try with same physical disk on same server, only once domU active for each
test.
On windows 7 pro 64 bit with gplpv build 308 with cfg
'phy:/dev/scd0,hdc:cdrom,r' works correctly.
On Lucid desktop 64 bit (ubuntu 10.04) (domU pv) with cfg
'phy:/dev/scd0,xvdb:cdrom,r' does not work correctly.
On "computer resources", the cdrom unit is without name of cdrom and is
impossible open it.
I search on syslog on Lucid domu and find this:
...
Jul 14 14:49:13 lucid kernel: [   18.710743] end_request: I/O error, dev
xvdb, sector 269200
Jul 14 14:49:13 lucid kernel: [   18.710753] Buffer I/O error on device
xvdb, logical block 67300
Jul 14 14:49:14 lucid gnome-session[957]: WARNING: Client
'/org/gnome/SessionManager/Client2' failed to reply before timeout
Jul 14 14:49:16 lucid kernel: [   21.561915] end_request: I/O error, dev
xvdb, sector 269200
Jul 14 14:49:16 lucid kernel: [   21.561926] Buffer I/O error on device
xvdb, logical block 67300
Jul 14 14:49:19 lucid kernel: [   24.424317] end_request: I/O error, dev
xvdb, sector 269200
Jul 14 14:49:19 lucid kernel: [   24.424324] Buffer I/O error on device
xvdb, logical block 67300
Jul 14 14:49:22 lucid kernel: [   27.286465] end_request: I/O error, dev
xvdb, sector 269200
Jul 14 14:49:22 lucid kernel: [   27.286475] Buffer I/O error on device
xvdb, logical block 67300
Jul 14 14:49:22 lucid rtkit-daemon[983]: Sucessfully made thread 1192 of
process 1192 (n/a) owned by '1000' high priority at nice level -11.
Jul 14 14:49:22 lucid rtkit-daemon[983]: Supervising 2 threads of 2
processes of 2 users.
Jul 14 14:49:22 lucid rtkit-daemon[983]: Sucessfully made thread 1205 of
process 1205 (n/a) owned by '1000' high priority at nice level -11.
Jul 14 14:49:22 lucid rtkit-daemon[983]: Supervising 3 threads of 3
processes of 2 users.
Jul 14 14:49:22 lucid pulseaudio[1205]: pid.c: Daemon already running.
Jul 14 14:49:24 lucid kernel: [   30.148086] end_request: I/O error, dev
xvdb, sector 269200
Jul 14 14:49:24 lucid kernel: [   30.148096] Buffer I/O error on device
xvdb, logical block 67300
Jul 14 14:49:27 lucid kernel: [   33.011044] end_request: I/O error, dev
xvdb, sector 269200
Jul 14 14:49:27 lucid kernel: [   33.011058] Buffer I/O error on device
xvdb, logical block 67300
...

Dom0 is Squeeze with kernel 2.6.32 from Squeeze repository and xen 4.0.2-rc3
from source
Lucid domU is with kernel 2.6.32 from Lucid repository.
All dom0 and domU package is already update to last version on repository,
also kernels.

Someone can help me to solve this problem please?

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