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[Xen-users] Problem in linux domU re: /dev/rtc and hwclock

Hi all,

  One of our domU VMs (CentOS 5.6 x86_64) runs a cobol application,
which in turn called 'clock' to get timestamps. Changing this is

  When I try to call 'clock --debug' I get:

[root@vm0010 ~]# clock --debug
hwclock from util-linux-2.13-pre7
hwclock: Open of /dev/rtc failed, errno=19: No such device.
No usable clock interface found.
Cannot access the Hardware Clock via any known method.

  The device exists:

[root@vm0010 ~]# ls -lah /dev/rtc
crw------- 1 root root 10, 135 Jul 12 18:00 /dev/rtc

  As I understand it, this is (in part?) to prevent domU from altering
dom0's date/time. Obviously, this is a good thing, but can the device be
made available to domU VMs in a "read-only" mode?


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