Date: Fri, 19 Apr 2024 14:44:06 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= <roger.pau@citrix.com> To: Brian Buhrow <buhrow@nfbcal.org> Cc: xen@freebsd.org Subject: Re: Freebsd-13.1 as domu cannot use multiple virtual disks Message-ID: <ZiJnFg4LGvui87R9@macbook.local> In-Reply-To: <202404190559.43J5x9eZ015862@nfbcal.org> References: <202404190559.43J5x9eZ015862@nfbcal.org>
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On Thu, Apr 18, 2024 at 10:59:09PM -0700, Brian Buhrow wrote: > Hello. I'm running FreeBSD-13.1 as a domu on xen-4.16.0 and I find I cannot use multiple > virtual disks on the same virtual guest. > > > The problem appears to be related to the way the geom layer sorts the disks. Somehow it thinks > the first and second disks are related. > > Here is the configuration of the disks for the virtual machine: > > > disk = [ > 'file:/var/xen/nfbcal/fbsd_dev/disk0,0x1,rw', > 'file:/var/xen/nfbcal/fbsd_dev/disk1,0x2,rw' > ] The vdev syntax that you are using is not a valid one, see: https://xenbits.xen.org/docs/unstable/man/xen-vbd-interface.7.html That wants to be: disk = [ 'file:/var/xen/nfbcal/fbsd_dev/disk0,xvda,rw', 'file:/var/xen/nfbcal/fbsd_dev/disk1,xvdb,rw' ] Or hd{a,b}. I've tried using 0x1 and 0x2 as your example, and it results in some errors in geom. > Here's what the virtual guest reports when it boots: > > > xbd0: 51200MB <Virtual Block Device> at device/vbd/1 on xenbusb_front0 > xbd0: features: flush, write_barrier > xbd0: synchronize cache commands enabled. > xbd1: 100000MB <Virtual Block Device> at device/vbd/2 on xenbusb_front0 > xbd1: features: flush, write_barrier > xbd1: synchronize cache commands enabled. > Trying to mount root from ufs:/dev/gpt/root []... > sysctl_warn_reuse: can't re-use a leaf (kern.geom.disk.xbd0.led)! > sysctl_warn_reuse: can't re-use a leaf (kern.geom.disk.xbd0.flags)! > g_dev_taste: make_dev_p() failed (gp->name=xbd0, error=17) > > > Any ideas what I'm doing wrong? this must work, right? It does work for me when using xvd{a,b}: [...] xbd0: 6176MB <Virtual Block Device> at device/vbd/51712 on xenbusb_front0 xbd0: features: flush, write_barrier xbd0: synchronize cache commands enabled. xbd1: 6176MB <Virtual Block Device> at device/vbd/51728 on xenbusb_front0 xbd1: features: flush, write_barrier xbd1: synchronize cache commands enabled. Trying to mount root from ufs:/dev/xbd0p4 []... WARNING: WITNESS option enabled, expect reduced performance. random: unblocking device. Setting hostuuid: 116f6f55-b478-11ee-a8a1-48210b35a577. Setting hostid: 0xa6037d1b. Starting file system checks: /dev/xbd0p4: FILE SYSTEM CLEAN; SKIPPING CHECKS /dev/xbd0p4: clean, 331160 free (2664 frags, 41062 blocks, 0.2% fragmentation) /dev/gpt/efiesp: FILESYSTEM CLEAN; SKIPPING CHECKS Mounting local filesystems:. [...] Regards, Roger.
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