AHCI Problems using master (a80975a)

Sepherosa Ziehau sepherosa at gmail.com
Tue Apr 12 17:34:39 PDT 2011

On Wed, Apr 13, 2011 at 5:04 AM, Sven Gaerner <sgaerner at gmx.net> wrote:
> Hi,
> I just upgraded to master (a8097a) from the latest 2_8 branch commit and
> rebuild and installed world and kernel.  After booting the upgraded
> system xpt fails to configure and mounting the root filesystem also
> fails.
> The reported error is:
>        hammer_mountroot: can't find devvp
> After booting with AHCI disabled, the system starts up, still reporting
> xpt errors, but mounting the root filesystem succeeded.  So I can use
> the system.
> My /boot/loader.conf:
>        vfs.root.mountfrom="hammer:serno/WD-WXC0A9997024.s2d"
>        kern.emergency_intr_enable=1
>        if_ath_load="YES"
>        snd_hda_load="YES"
>        dm_load="YES"
>        loader_color="YES"
> I guess the xpt problem is not the reason why root cannot be mounted,
> because the errors are also shown if AHCI is disabled.  The problem with
> the root filesystem seems to be that the hard drives are not detected
> properly.  The prompt that is shown if booting with AHCI enabled fails
> also does not show the hard drives.
> I attached a dmesg created after
>        set hint.ahci.disabled=1
>        boot -v
> Are there any hints how to get more details on that problem or how to
> solve it?

I suggest you to build X86_64_GENERIC_SMP instead of X86_64_GENERIC

Best Regards,

Best Regards,

Tomorrow Will Never Die

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