Date: Wed, 17 Feb 2010 22:26:57 -0800 From: Matt Reimer <mattjreimer@gmail.com> To: Chris <behrnetworks@gmail.com> Cc: Scot Hetzel <swhetzel@gmail.com>, Pegasus Mc Cleaft <ken@mthelicon.com>, freebsd-current@freebsd.org Subject: Re: Seeing the dreaded "ZFS: i/o error - all block copies unavailable" on 9.0-CURRENT Message-ID: <f383264b1002172226s9a76ae6sac55dca22dface77@mail.gmail.com> In-Reply-To: <64aa03031002171949gdfbd99ci8eab7f29399cc011@mail.gmail.com> References: <64aa03031002161803h667734cal4d668b9eb9c0a1a8@mail.gmail.com> <790a9fff1002161842g17de8ecfvf2cfa8c77f03c32@mail.gmail.com> <64aa03031002161849s7b66b9e3l727aafd2afd3d596@mail.gmail.com> <201002171840.41088.ken@mthelicon.com> <790a9fff1002171303u4b40a90cr626ef856efee473b@mail.gmail.com> <64aa03031002171416s128ff196y92a5be5a6abadeb@mail.gmail.com> <64aa03031002171949gdfbd99ci8eab7f29399cc011@mail.gmail.com>
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On Wed, Feb 17, 2010 at 7:49 PM, Chris <behrnetworks@gmail.com> wrote:
> As a follow-up to this, I rebuilt world and kernel and updated my
> system to the latest 8.0-STABLE. I'm still seeing the problem and I
> can still get around it by choosing my hard drive from the F12 boot
> menu. I did notice that the bootloader now says it's ZFS enabled
> whereas it didn't while on 8.0-RELEASE. I also updated the bootcode
> with: "gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 adX"
> after installing world. No help there.
>
> It seems to me that there's a difference in the way the ZFS-enabled
> bootloader sees the drives that the BIOS reports as opposed to the
> non-ZFS-enabled bootloader. Anyone have any ideas on that? I checked
> for any BIOS updates but it looks like I'm current. It sure would be
> nice to not have to select my hard drive each time.
>
Can you paste the exact error? Are you getting something like:
error 1: lba 32
error 1: lba 1
When I've seen the above sequence, it was due to a stack overflow (IIRC),
with the result that the loader would start a second time and barf out these
errors.
The "large number" in the error might give us a clue as to what's going on.
If the number is really large, it might be an indication that your BIOS
doesn't reliably read past a certain threshold. ZFS writes a sort of label
at the beginning and end of its drives; perhaps the loader is trying to read
the label at the end of the disk and is failing (I don't recall whether it
tries to read both labels).
Matt
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