Do you have "loglvl=all guest_loglvl=all" on your xen boot command-line?
-George
On Thu, 2011-04-28 at 17:25 +0100, John Weekes wrote:
> On 4/28/2011 6:10 AM, George Dunlap wrote:
> > Is this just using credit2, or does it do the same thing under credit1?
>
> I just re-tested with credit1, and it seems to do the same thing with
> debug=y (on xen-unstable), you're right.
>
> On 4.1 with debug=n and credit1, which is my normal configuration, it
> doesn't appear to happen, or at least didn't happen over the 10 attempts
> that I just made (it could be a rare problem on that setup). I may have
> to do some additional testing with 4.1 credit2, 4.1 debug=y, and
> unstable debug=n, but it's good that you're seeing something
> reproducible on your end, at least (and with debug=y).
>
> > On my box, stubdoms with a 4-vcpu guest on credit1 fail too, with this
> > output on the console:
> >
> > xs_read_watch() -> /local/domain/3/log-throttling
> > /local/domain/3/log-throttling
> > xs_read(/local/domain/3/log-throttling): ENOENT
> > (XEN) HVM3: HVM Loader
> > xs_read_watch() -> /local/domain/0/backend/console/3 be:0x13fb66:3:0x154240
> > (XEN) HVM3: Detected Xen v4.2-unstable
> > Page fault at linear address 0x10, eip 0x49d9, regs 0x3cfb3c, sp 0x0,
> > our_sp 0x3cfb18, code 0
> > (XEN) HVM3: Xenbus rings @0xfeffc000, event channel 5
> > Thread: main
> > (XEN) HVM3: System requested ROMBIOS
> > EIP: 49d9, EFLAGS 10202.
> > (XEN) HVM3: CPU speed is 1995 MHz
> > EBX: 00000000 ECX: 001589b0 EDX: 00000000
> > ESI: 0000000c EDI: 0000000c EBP: 003cfbb8 EAX: 00000000
> > DS: e021 ES: e021 orig_eax: ffffffff, eip: 000049d9
> > CS: e019 EFLAGS: 00010202 esp: 00000000 ss: 3cfba4
> > base is 0x3cfbb8 caller is 0x24bd3
> > base is 0x3cfbf8 caller is 0x9814
> > base is 0x3cfe88 caller is 0xe8e91
> > base is 0x3cfff0 caller is 0x31ad
> >
> > 3cfba0: 00 00 00 00 28 15 00 00 00 00 00 00 0a 00 00 00
> > 3cfbb0: 67 96 13 00 e8 fb 3c 00 f8 fb 3c 00 d3 4b 02 00
> > 3cfbc0: 00 00 00 00 51 e5 01 00 00 00 00 00 00 00 00 00
> > 3cfbd0: 00 00 00 00 cb 96 13 00 78 94 00 82 03 00 00 00
> >
> > 49c0: c8 c1 e8 05 83 e1 1f 8b 44 85 ec d3 f8 a8 01 74
> > 49d0: 0e 8b 43 14 89 04 24 ff d2 83 7b 10 00 75 23 8b
> > 49e0: 53 0c 85 d2 74 1c 8b 0b 89 c8 c1 e8 05 83 e1 1f
> > 49f0: 8b 44 85 e4 d3 f8 a8 01 74 08 8b 43 14 89 04 24
> > Pagetable walk from virt 10, base 371000:
> > L3 = 00000000b074f027 (0x372000) [offset = 0]
> > L2 = 00000000b074d067 (0x374000) [offset = 0]
> > L1 = 0000000000000000 [offset = 0]
>
> I'm not seeing that one yet.
>
> -John
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