From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabio Fantoni Subject: Re: GPLPV questions Date: Sat, 28 Dec 2013 09:33:17 +0100 Message-ID: <52BE8CCD.1040701@tiscali.it> References: <511BA0D7.8070809@tiscali.it> <6035A0D088A63A46850C3988ED045A4B35671CE8@BITCOM1.int.sbss.com.au> <52BD862B.4080704@tiscali.it> <6035A0D088A63A46850C3988ED045A4B68566D03@BITCOM1.int.sbss.com.au> Reply-To: fantonifabio@tiscali.it Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2466536258102085349==" Return-path: In-Reply-To: <6035A0D088A63A46850C3988ED045A4B68566D03@BITCOM1.int.sbss.com.au> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: James Harper , xen-devel List-Id: xen-devel@lists.xenproject.org This is a cryptographically signed message in MIME format. --===============2466536258102085349== Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms070506080303070108070704" This is a cryptographically signed message in MIME format. --------------ms070506080303070108070704 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Il 27/12/2013 23:52, James Harper ha scritto: >> Il 13/02/2013 23:26, James Harper ha scritto: >> >> >> >> problem with windows domUs (DC and client) in a windows >> domain where >> the time source is DC by default. >> >> >> I noticed that recently. I can't think how it could be a GPLPV bug >> though. >> >> >> James >> >> >> I saw this doc: >> http://docs.vmd.citrix.com/XenServer/5.0.0/1.0/en_gb/guest.html#window= >> s_time >> ... it is important to have up-to-date Windows PV drivers installed, a= s they >> notify the Windows kernel that a time synchronization is required afte= r >> resuming. >> >> I believe that citrix pv have a sort of forced windows clock update af= ter >> domU restore. >> Such forced update seems missed on gplpv. >> Is it possible to have implemented something similar on gplpv? >> > Do you know if it's the virtual 'time of day' hardware clock that is no= w wrong and windows needs to synchronise to an external time source, or i= f windows just needs to resync to the hardware clock? > > James > Thanks for the reply. I don't know if is virtual or hardware clock to resync. When I do save/restore of windows domUs (with gplpv) inside domain on=20 restore the domain users are unable to login until windows time will be=20 updated. I also enabled ntp and tried to set very low time between every ntp=20 check but however, it takes a long time to synchronize. I did a fast search on citrix pv and probably the time update is here: https://github.com/xenserver/win-xeniface/blob/master/src/win32stubagent/= XService.cpp on finishSuspend function, there is this comment: /* We need to resync=20 the clock when we recover from suspend/resume. */ --------------ms070506080303070108070704 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: Firma crittografica S/MIME MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIINhjCC BjQwggQcoAMCAQICASAwDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoT DVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNp Z25pbmcxKTAnBgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3 MTAyNDIxMDI1NVoXDTE3MTAyNDIxMDI1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1T dGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWdu 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