On Fri, May 07, 2010 at 09:37:22AM +0200, Kevin Wolf wrote:
> Am 07.05.2010 03:19, schrieb Marcelo Tosatti:
> > On Thu, Nov 19, 2009 at 01:19:55PM +0100, Jan Kiszka wrote:
> >> Hi,
> >>
> >> I just managed to push a qemu-kvm process (git rev. b496
Am 07.05.2010 03:19, schrieb Marcelo Tosatti:
> On Thu, Nov 19, 2009 at 01:19:55PM +0100, Jan Kiszka wrote:
>> Hi,
>>
>> I just managed to push a qemu-kvm process (git rev. b496fe3431) into an
>> endless loop in qcow2_alloc_cluster_offset, namely over
>> QLIST_FORE
On Thu, Nov 19, 2009 at 01:19:55PM +0100, Jan Kiszka wrote:
> Hi,
>
> I just managed to push a qemu-kvm process (git rev. b496fe3431) into an
> endless loop in qcow2_alloc_cluster_offset, namely over
> QLIST_FOREACH(old_alloc, &s->cluster_allocs, next_in_fligh
Am 07.12.2009 16:00, schrieb Kevin Wolf:
> Am 07.12.2009 15:16, schrieb Jan Kiszka:
>>> Likely not. What I did was nothing special, and I did not noticed such a
>>> crash in the last months.
>>
>> And now it happened again (qemu-kvm head, during kernel installation
>> from network onto local qcow2-
Am 07.12.2009 17:09, schrieb Jan Kiszka:
> Kevin Wolf wrote:
>> In qcow_aio_write_cb there isn't much happening between these calls. The
>> only thing that could somehow become dangerous is the
>> qcow_aio_write_cb(req, 0); for queued requests in run_dependent_requests.
>
> If m->nb_clusters is no
Kevin Wolf wrote:
> Am 07.12.2009 15:16, schrieb Jan Kiszka:
>>> Likely not. What I did was nothing special, and I did not noticed such a
>>> crash in the last months.
>> And now it happened again (qemu-kvm head, during kernel installation
>> from network onto local qcow2-disk). Any clever idea how
Kevin Wolf wrote:
> Am 07.12.2009 15:50, schrieb Jan Kiszka:
>> Jan Kiszka wrote:
>>> And now it happened again (qemu-kvm head, during kernel installation
>>> from network onto local qcow2-disk). Any clever idea how to proceed with
>>> this?
>>>
>>> I could try to run the step in a loop, hopefully
Am 07.12.2009 15:50, schrieb Jan Kiszka:
> Jan Kiszka wrote:
>> And now it happened again (qemu-kvm head, during kernel installation
>> from network onto local qcow2-disk). Any clever idea how to proceed with
>> this?
>>
>> I could try to run the step in a loop, hopefully retriggering it once in
>>
On 12/07/2009 04:50 PM, Jan Kiszka wrote:
Maybe I'm seeing ghosts, and I don't even have a minimal clue about what
goes on in the code, but this looks fishy:
Plenty of ghosts in qcow2, of all those explorers who tried to brave the
code. Only Kevin has ever come back.
preallocate() in
Am 07.12.2009 15:16, schrieb Jan Kiszka:
>> Likely not. What I did was nothing special, and I did not noticed such a
>> crash in the last months.
>
> And now it happened again (qemu-kvm head, during kernel installation
> from network onto local qcow2-disk). Any clever idea how to proceed with
> th
Jan Kiszka wrote:
> And now it happened again (qemu-kvm head, during kernel installation
> from network onto local qcow2-disk). Any clever idea how to proceed with
> this?
>
> I could try to run the step in a loop, hopefully retriggering it once in
> a (likely longer) while. But then we need some
Jan Kiszka wrote:
> Kevin Wolf wrote:
>> Hi Jan,
>>
>> Am 19.11.2009 13:19, schrieb Jan Kiszka:
>>> (gdb) print ((BDRVQcowState *)bs->opaque)->cluster_allocs.lh_first
>>> $5 = (struct QCowL2Meta *) 0xcb3568
>>> (gdb) print *((BDRVQcowState *)bs->opaque)->cluster_allocs.lh_first
>>> $6 = {offset =
Kevin Wolf wrote:
> Hi Jan,
>
> Am 19.11.2009 13:19, schrieb Jan Kiszka:
>> (gdb) print ((BDRVQcowState *)bs->opaque)->cluster_allocs.lh_first
>> $5 = (struct QCowL2Meta *) 0xcb3568
>> (gdb) print *((BDRVQcowState *)bs->opaque)->cluster_allocs.lh_first
>> $6 = {offset = 7417176064, n_start = 0,
Hi Jan,
Am 19.11.2009 13:19, schrieb Jan Kiszka:
> (gdb) print ((BDRVQcowState *)bs->opaque)->cluster_allocs.lh_first
> $5 = (struct QCowL2Meta *) 0xcb3568
> (gdb) print *((BDRVQcowState *)bs->opaque)->cluster_allocs.lh_first
> $6 = {offset = 7417176064, n_start = 0, nb_available = 16, nb_cluste
Hi,
I just managed to push a qemu-kvm process (git rev. b496fe3431) into an
endless loop in qcow2_alloc_cluster_offset, namely over
QLIST_FOREACH(old_alloc, &s->cluster_allocs, next_in_flight):
(gdb) bt
#0 0x0048614b in qcow2_alloc_cluster_offset (bs=0xc4e1d0,
offset=741
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