Seeing the dreaded "ZFS: i/o error - all block copies unavailable" on 9.0-CURRENT

Chris behrnetworks at gmail.com
Fri Mar 19 02:18:12 UTC 2010


I guess we can officially declare this thread dead?

On Fri, Feb 26, 2010 at 1:43 AM, Chris <behrnetworks at gmail.com> wrote:
> On Thu, Feb 25, 2010 at 1:08 PM, John Baldwin <jhb at freebsd.org> wrote:
>> On Thursday 25 February 2010 12:58:13 pm Chris wrote:
>>> On Thu, Feb 25, 2010 at 8:06 AM, John Baldwin <jhb at freebsd.org> wrote:
>>> > On Wednesday 24 February 2010 10:12:25 pm Chris wrote:
>>> >> So it sounds like somehow my system is trying to use the old boot2
>>> >> method when I don't hit F12. I'm guessing the difference is due to how
>>> >> the hard drive is getting presented to the boot loader by the BIOS.
>>> >> How can I get rid of the legacy boot system and use only the ZFS
>>> >> bootloader?
>>> >
>>> > Does F12 enable PXE booting or some such?
>>>
>>> The only options I have when I press F12 are to either boot from my
>>> hard drive or to boot from my optical drive. Is there
>>> any way to more verbosely see what is happening at the bootloader level?
>>
>> No.  So it sounds like F12 pops up some sort of boot menu, and that in the
>> broken case you just let the machine boot off of the disk normally?
>
> Right. Upon powering on, to get the system to boot normally, I hit the
> F12 key which brings up a box that lets me choose either my hard disk
> or my optical drive to boot. When I do not hit F12, I get the LBA
> errors and the "ZFS: i/o error - all block copies unavailable" error
> shown in previous posts to this thread. If I boot into the non-F12
> broken state and leave the system alone, it appears to try and boot
> twice and gets the same LBA errors and the same ZFS error.
>
> Again, if I install FreeBSD off an installation CD and use sysinstall
> to install a typical UFS-based system it boots without any trouble at
> all, F12 or not, leading me to believe that there's some sort of
> difference between the plain bootloader and the ZFS-enabled bootloader
> with respect to the way they interact with the BIOS.
>
> Another oddity I noticed is that if I change the SATA mode in the BIOS
> to "IDE Native" mode, the hard drive activity light stays on, even
> when the system is booted and is sitting idle. If I change it to
> "AHCI", I do not see this. I doubt this has any relation to ZFS, but
> it was just an interesting observation.
>


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