On 25/07/13 17:15, Julian Elischer wrote:
> I have a VPS on RootBSD (freebsd developer's discount).
> They use Xen on their vps servers.
>
> yesterday I tried to upgrade my server to -current and came across two
> interesting failure modes.
>
> 1/ I somehow wrote a kernel that made the loader crash when loading it
> (not running it).
> this was Not Good (TM) because the loader loads the kernel BEFORE it
> gets to the prompt so there was no way for me to type in the name of an
> alternate kernel. (actually I may have been ab;e to do it from the stage
> 2 loader if I could remember the syntax and hte stage 2 lader could load
> ELF binaries (I remember it could only do a.out .. is that still true?))
>
> It's distressing that the loader can be made to crash from loading a
> misformed kernel.
> I still have it if anyone is still interested in pulling it apart to see
> what is weird about it.
>
> 2/ it is impossible for me to make a -current kernel that can mount root.
> it finds the drive, then it tastes it to see if there is a lable it
> wants, fails and then I get an infinite (apparently) set of "waiting for
> root device : usbus0"
> (or similar)messages.
I've just tested a current XENHVM amd64 kernel and it seems to work
just fine, tip commit is:
commit 0f5a145fe0fcb6e9907f1458db21e478f874b760
Author: glebius
Date: Tue Jul 23 10:25:34 2013 +
Add constant for PPP-Max-PayLoad tag.
Submitted by: Dmitry Luhtionov
Justin committed a change to blkfront not long ago that changed the
translation of "xbd" devices to "ada" instead of "ad", you should
rename your "ad" devices in /etc/fstab to "ada". Your problem
however doesn't seem to be related to that change, or you will at
least get a prompt asking for your root device instead of being
stuck in an infinite wait.
I guess there's no way you can execute "xenstore-ls -fp" on the Dom0 in
order to see the state of the PV devices?
Here is the full verbose bootlog:
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
SMAP type=01 base= len=0009fc00
SMAP type=02 base=0009fc00 len=0400
SMAP type=02 base=000f len=0001
SMAP type=01 base=0010 len=0f6ff000
SMAP type=02 base=0f7ff000 len=1000
SMAP type=02 base=fc00 len=0400
Table 'FACP' at 0xfc009a20
Table 'APIC' at 0xfc009b20
APIC: Found table at 0xfc009b20
APIC: Using the MADT enumerator.
MADT: Found CPU APIC ID 0 ACPI ID 0: enabled
SMP: Added CPU 0 (AP)
MADT: Found CPU APIC ID 2 ACPI ID 1: enabled
SMP: Added CPU 2 (AP)
MADT: Found CPU APIC ID 4 ACPI ID 2: enabled
SMP: Added CPU 4 (AP)
MADT: Found CPU APIC ID 6 ACPI ID 3: enabled
SMP: Added CPU 6 (AP)
MADT: Found CPU APIC ID 8 ACPI ID 4: enabled
SMP: Added CPU 8 (AP)
MADT: Found CPU APIC ID 10 ACPI ID 5: enabled
SMP: Added CPU 10 (AP)
MADT: Found CPU APIC ID 12 ACPI ID 6: enabled
SMP: Added CPU 12 (AP)
MADT: Found CPU APIC ID 14 ACPI ID 7: disabled
MADT: Found CPU APIC ID 16 ACPI ID 8: disabled
MADT: Found CPU APIC ID 18 ACPI ID 9: disabled
MADT: Found CPU APIC ID 20 ACPI ID 10: disabled
MADT: Found CPU APIC ID 22 ACPI ID 11: disabled
MADT: Found CPU APIC ID 24 ACPI ID 12: disabled
MADT: Found CPU APIC ID 26 ACPI ID 13: disabled
MADT: Found CPU APIC ID 28 ACPI ID 14: disabled
MADT: Found CPU APIC ID 30 ACPI ID 15: disabled
MADT: Found CPU APIC ID 32 ACPI ID 16: disabled
MADT: Found CPU APIC ID 34 ACPI ID 17: disabled
MADT: Found CPU APIC ID 36 ACPI ID 18: disabled
MADT: Found CPU APIC ID 38 ACPI ID 19: disabled
MADT: Found CPU APIC ID 40 ACPI ID 20: disabled
MADT: Found CPU APIC ID 42 ACPI ID 21: disabled
MADT: Found CPU APIC ID 44 ACPI ID 22: disabled
MADT: Found CPU APIC ID 46 ACPI ID 23: disabled
MADT: Found CPU APIC ID 48 ACPI ID 24: disabled
MADT: Found CPU APIC ID 50 ACPI ID 25: disabled
MADT: Found CPU APIC ID 52 ACPI ID 26: disabled
MADT: Found CPU APIC ID 54 ACPI ID 27: disabled
MADT: Found CPU APIC ID 56 ACPI ID 28: disabled
MADT: Found CPU APIC ID 58 ACPI ID 29: disabled
MADT: Found CPU APIC ID 60 ACPI ID 30: disabled
MADT: Found CPU APIC ID 62 ACPI ID 31: disabled
MADT: Found CPU APIC ID 64 ACPI ID 32: disabled
MADT: Found CPU APIC ID 66 ACPI ID 33: disabled
MADT: Found CPU APIC ID 68 ACPI ID 34: disabled
MADT: Found CPU APIC ID 70 ACPI ID 35: disabled
MADT: Found CPU APIC ID 72 ACPI ID 36: disabled
MADT: Found CPU APIC ID 74 ACPI ID 37: disabled
MADT: Found CPU APIC ID 76 ACPI ID 38: disabled
MADT: Found CPU APIC ID 78 ACPI ID 39: disabled
MADT: Found CPU APIC ID 80 ACPI ID 40: disabled
MADT: Found CPU APIC ID 82 ACPI ID 41: disabled
MADT: Found CPU APIC ID 84 ACPI ID 42: disabled
MADT: Found CPU APIC ID 86 ACPI ID 43: disabled
MADT: Found CPU APIC ID 88 ACPI ID 44: disabled
MADT: Found CPU APIC ID 90 ACPI ID 45: disabled
MADT: Found CPU APIC ID 92 ACPI ID 46: disabled
MADT: Found CPU APIC ID 94 ACPI ID 47: disabled
MADT: Found CPU APIC ID 96 ACPI ID 48: disabled
MA
