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Date: Tue, 1 May 2012 03:10:15 GMT
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To: freebsd-xen@FreeBSD.org
From: moto kawasaki <moto@kawasaki3.org>
Cc: 
Subject: Re: kern/166174: [xen] Problems ROOT MOUNT ERROR <freebsd 8.3>
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The following reply was made to PR kern/166174; it has been noted by GNATS.

From: moto kawasaki <moto@kawasaki3.org>
To: bug-followup@FreeBSD.org
Cc: ilsujang@gmail.com
Subject: Re: kern/166174: [xen] Problems ROOT MOUNT ERROR <freebsd 8.3>
Date: Tue, 01 May 2012 12:00:02 +0900 (JST)

 Hi,
 
 I'd report the similar case which I am facing.
 
 My envrionment is;
   XenServer 5.6 SP2
   FreeBSD 8.3-RELEASE (amd64) -- XENHVM kernel
 
 when booting this FreeBSD VM, its kernel cannot mount root disk.
 
 (case 1: ad0s1a, from /etc/fstab) ==========================
 
 
 ums0: <Endpoint1 Interrupt Pipe) on usbus0
 ums0: 3 buttons and [Z] coordinates ID=0
 Trying to mount root from ufs:/dev/ad0s1a
 ROOT MOUNT ERROR:
 If you have invalid mount options, reboot, and first try the following from
 the loader prompt:
 
      set ufs.root.mountfrom.options=rw
 
 and then remove invalid mount options from /ete/fstab.
 
 Loader variables:
 vfs.root.mountfrom=ufs:/dev/ad0s1a
 vfs.root.mountfrom.options=rw
 Manual root filesgstem specification:
   <fstype>:<device>  Mount <device> using filesystem <fstype>
                        eg. ufs:/dev/da0s1a
                        eg. cd9660:/deu/acd0
                        This is equivalent to: mount -t cd9660 /deu/acd0 /
   ? List valid disk boot devices
   <empty line> Abort manual input
 
 mountroot> _
 ============================================================
 
 (case 2: xbd, entered by hand just after the case 1) =======
 mountroot> ufs:/dev/xbd0s1a
 Trying to mount root from ufs:/dev/xbd0s1a
 ROOT MOUNT ERROR:
 If you have invalid mount options, reboot, and first try the following from
 the loader prompt:
 
      set ufs.root.mountfrom.options=rw
 
 and then remove invalid mount options from /ete/fstab.
 
 Loader variables:
 vfs.root.mountfrom=ufs:/dev/ad0s1a
 vfs.root.mountfrom.options=rw
 Manual root filesgstem specification:
   <fstype>:<device>  Mount <device> using filesystem <fstype>
                        eg. ufs:/dev/da0s1a
                        eg. cd9660:/deu/acd0
                        This is equivalent to: mount -t cd9660 /deu/acd0 /
   ? List valid disk boot devices
   <empty line> Abort manual input
 
 mountroot> _
 ============================================================
 
 
 
 HVMXEN kernel of FreeBSD 8.2-RELEASE-p6 works just fine in this
 environment.
 
 Also, I can try other "mountroot>" devices if you could tell me within
 a day or two.
 
 Thank you!!
 
 
 
 
 Best Regards,
 
 
 
 -- 
 moto kawasaki <moto@kawasaki3.org>