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Re: [Xen-devel] Why set time on dom0, but takes no effect on

To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Why set time on dom0, but takes no effect on
From: "xiaoyun.maoxy" <xiaoyun.maoxy@xxxxxxxxxxxxxx>
Date: Sat, 2 Apr 2011 10:30:27 +0800
Cc: 'tinnycloud' <tinnycloud@xxxxxxxxxxx>
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First I get this when run in domain 0.

root@xmao # hwclock --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.

Later I follow

But after reboot, time is still the old one

>Date: Fri, 1 Apr 2011 15:15:28 +0200
>From: Pavel Mateja <pavel@xxxxxxxxxx>
>Subject: Re: [Xen-devel] Why set time on dom0, but takes no effect on
        RTC time
>To: xen-devel@xxxxxxxxxxxxxxxxxxx
>Message-ID: <201104011515.29490.pavel@xxxxxxxxxx>
>Content-Type: Text/Plain;  charset="us-ascii"

>> In dom0, I use date command to adjuest time, but  after reboot, the time
>> will come back to the time from BIOS.  Is it make sense?

>Try to run
>hwclock --systohc
>before reboot. There is no other way to store time during power off and
>Pavel Mateja

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