Re: openzfs related kernel install fails (r365296)

On 9/5/20 4:23 PM, Ruslan Makhmatkhanov wrote:
> Mark Johnston wrote on 9/4/20 9:55 PM:
>
> [...]
>
>>>>
>>>> The zfs.ko Makefile unconditionally enables creation of a debug file.
>>>> Could you verify that the problem is gone with this patch?
>>>
>>>
>>> This patch indeed fixes the install. Thank you!
>>
>> Committed in r365336, thanks.
>>
>
> Sadly it later fails at boot. Booting older kernel (r359781) fixes the 
> issue. I read all the zfs related threads on freebsd-current for 
> August and September, but still not found the solution. Failing kernel 
> and world are at r365296.
>
> Sep  5 22:51:54 cf kernel:
> Sep  5 22:51:54 cf kernel: Loader variables:
> Sep  5 22:51:54 cf kernel:   vfs.root.mountfrom=zfs:z/ROOT/default
>

vfs.root.mountfrom=zfs:z/ROOT/default looks wrong, I wonder how that 
happened?


>
> Sep  5 22:51:54 cf kernel:
> Sep  5 22:51:54 cf kernel: Manual root filesystem specification:
> Sep  5 22:51:54 cf kernel:   <fstype>:<device> [options]
> Sep  5 22:51:54 cf kernel:       Mount <device> using filesystem <fstype>
> Sep  5 22:51:54 cf kernel:       and with the specified (optional) 
> option list.
> Sep  5 22:51:54 cf kernel:
> Sep  5 22:51:54 cf kernel:     eg. ufs:/dev/da0s1a
> Sep  5 22:51:54 cf kernel:         zfs:zroot/ROOT/default
> Sep  5 22:51:54 cf kernel:         cd9660:/dev/cd0 ro
> Sep  5 22:51:54 cf kernel:           (which is equivalent to: mount -t 
> cd9660 -o ro /dev/cd0 /)
> Sep  5 22:51:54 cf kernel:
> Sep  5 22:51:54 cf kernel:   ?               List valid disk boot devices
> Sep  5 22:51:54 cf kernel:   .               Yield 1 second (for 
> background tasks)
> Sep  5 22:51:54 cf kernel:   <empty line>    Abort manual input
> Sep  5 22:51:54 cf kernel:
> Sep  5 22:51:54 cf kernel: mountroot> panic: mountroot: unable to 
> (re-)mount root.
> Sep  5 22:51:54 cf kernel: cpuid = 2
> Sep  5 22:51:54 cf kernel: time = 16
> Sep  5 22:51:54 cf kernel: KDB: stack backtrace:
> Sep  5 22:51:54 cf kernel: #0 0xffffffff80bb1475 at kdb_backtrace+0x65
> Sep  5 22:51:54 cf kernel: #1 0xffffffff80b6a6e2 at vpanic+0x182
> Sep  5 22:51:54 cf kernel: #2 0xffffffff80b6a553 at panic+0x43
> Sep  5 22:51:54 cf kernel: #3 0xffffffff80c2991f at vfs_mountroot+0x198f
> Sep  5 22:51:54 cf kernel: #4 0xffffffff80b0970f at start_init+0x1f
> Sep  5 22:51:54 cf kernel: #5 0xffffffff80b2f7e2 at fork_exit+0x72
> Sep  5 22:51:54 cf kernel: #6 0xffffffff80f09c1e at fork_trampoline+0xe
> Sep  5 22:51:54 cf kernel: Uptime: 16s
> Sep  5 22:51:54 cf kernel: ---<<BOOT>>---
>