Date: Fri, 26 Feb 2010 00:43:53 -0500 From: Chris <behrnetworks@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: Scot Hetzel <swhetzel@gmail.com>, freebsd-current@freebsd.org, Pegasus Mc Cleaft <ken@mthelicon.com>, Matt Reimer <mattjreimer@gmail.com> Subject: Re: Seeing the dreaded "ZFS: i/o error - all block copies unavailable" on 9.0-CURRENT Message-ID: <64aa03031002252143k529096b1rf397254d5401d948@mail.gmail.com> In-Reply-To: <201002251308.36002.jhb@freebsd.org> References: <64aa03031002161803h667734cal4d668b9eb9c0a1a8@mail.gmail.com> <201002250806.01217.jhb@freebsd.org> <64aa03031002250958m470982c5g59735f9cef88af78@mail.gmail.com> <201002251308.36002.jhb@freebsd.org>
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On Thu, Feb 25, 2010 at 1:08 PM, John Baldwin <jhb@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@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 ho= w >> >> 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. =A0So 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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