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To: Andriy Gapon <avg@FreeBSD.org>
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Comments: In-reply-to Andriy Gapon <avg@FreeBSD.org>
	message dated "Mon, 08 Aug 2011 13:34:02 +0300."
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Date: Mon, 08 Aug 2011 14:11:55 +0300
From: Daniel Braniss <danny@cs.huji.ac.il>
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Cc: hackers@FreeBSD.org
Subject: Re: root on zfs almot working for me but ... 
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> on 08/08/2011 09:56 Daniel Braniss said the following:
> > Hi,
> > 	I managed to get boot to load the kernel, but the kernel can't find
> > the root:
> > ...
> > Trying to mount root from zfs:z/root
> > ROOT MOUNT ERROR: 
> > If you have invalid mount options, reboot, and first try the following from
> > the loader prompt:
> > 
> >      set vfs.root.mountfrom.options=rw
> > 
> > and then remove invalid mount options from /etc/fstab.
> > 
> > Loader variables:
> > vfs.root.mountfrom=zfs:z/root
> > vfs.root.mountfrom.options=rw
> > 
> > and
> > mountroot> ?
> > 
> > List of GEOM managed disk devices:
> >   gptid/81e19453-94ff-11e0-afed-6cf049b01360 gpt/disk3 
> > gptid/81d516e2-94ff-11e0-afed-6cf049b01360 gpt/swap3 
> > gptid/81cbc503-94ff-11e0-afed-6cf049b01360 gptid/81b4a09a-94ff-11e0-afed-6cf049
> > b01360 gpt/disk2 gptid/81a8c76e-94ff-11e0-afed-6cf049b01360 gpt/swap2 
> > gptid/81a13b80-94ff-11e0-afed-6cf049b01360 gptid/818c5da7-94ff-11e0-afed-6cf049
> > b01360 gpt/disk1 gptid/818199a3-94ff-11e0-afed-6cf049b01360 gpt/swap1 
> > gptid/817a78d3-94ff-11e0-afed-6cf049b01360 ada3p3 ada3p2 ada3p1 ada2p3 ada2p2 
> > ada2p1 ada1p3 ada1p2 ada1p1 gptid/81652d6f-94ff-11e0-afed-6cf049b01360 
> > gpt/disk0 gptid/815afb70-94ff-11e0-afed-6cf049b01360 gpt/swap0 
> > gptid/81543d17-94ff-11e0-afed-6cf049b01360 ada3 ada2 ada1 ada0p3 ada0p2 ada0p1 
> > ada0 cd0
> > 
> > but I don't see any zfs,
> > 
> > any help/ideas?
> 
> 
> Is /boot/zfs/zpool.cache present and up-to-date?
> 
ah, this was where my guts were pointing, so some more 'history':
The installation was done via diskless/PXE, and no amount of magic I tried
changed the location of the cache, since /boot/zfs is read-only, so I finally
booted from a usb and copied the cache, to z/root/boot/zfs
is there some way to dump/check/edit it?

thanks,
	danny

> -- 
> Andriy Gapon