On 21.04.2015 00:48, Ming Lei wrote:
> Thanks for providing that.
> The trick is just in CPU number and virito-scsi hw queue number,
> and that is why I asked that, :-)
> Now the problem is quite clear, before CPU1 online, suppose
> CPU3 is mapped hw queue 6, and CPU 3 will map to hw queue 5
>
On Mon, 20 Apr 2015 17:52:40 +0200
Dongsu Park wrote:
> On 20.04.2015 21:12, Ming Lei wrote:
> > On Mon, Apr 20, 2015 at 4:07 PM, Dongsu Park
> > wrote:
> > > Hi Ming,
> > >
> > > On 18.04.2015 00:23, Ming Lei wrote:
> > >> > Does anyone have an idea?
> > >>
> > >> As far as I can see, at least
On 20.04.2015 21:12, Ming Lei wrote:
> On Mon, Apr 20, 2015 at 4:07 PM, Dongsu Park
> wrote:
> > Hi Ming,
> >
> > On 18.04.2015 00:23, Ming Lei wrote:
> >> > Does anyone have an idea?
> >>
> >> As far as I can see, at least two problems exist:
> >> - race between timeout and CPU hotplug
> >> - in
On Mon, Apr 20, 2015 at 4:07 PM, Dongsu Park
wrote:
> Hi Ming,
>
> On 18.04.2015 00:23, Ming Lei wrote:
>> > Does anyone have an idea?
>>
>> As far as I can see, at least two problems exist:
>> - race between timeout and CPU hotplug
>> - in case of shared tags, during CPU online handling, about
Hi Ming,
On 18.04.2015 00:23, Ming Lei wrote:
> > Does anyone have an idea?
>
> As far as I can see, at least two problems exist:
> - race between timeout and CPU hotplug
> - in case of shared tags, during CPU online handling, about setting
> and checking hctx->tags
>
> So could you please test
On Mon, Apr 20, 2015 at 4:07 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Hi Ming,
On 18.04.2015 00:23, Ming Lei wrote:
Does anyone have an idea?
As far as I can see, at least two problems exist:
- race between timeout and CPU hotplug
- in case of shared tags, during CPU online
Hi Ming,
On 18.04.2015 00:23, Ming Lei wrote:
Does anyone have an idea?
As far as I can see, at least two problems exist:
- race between timeout and CPU hotplug
- in case of shared tags, during CPU online handling, about setting
and checking hctx-tags
So could you please test the
On Mon, 20 Apr 2015 17:52:40 +0200
Dongsu Park dongsu.p...@profitbricks.com wrote:
On 20.04.2015 21:12, Ming Lei wrote:
On Mon, Apr 20, 2015 at 4:07 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Hi Ming,
On 18.04.2015 00:23, Ming Lei wrote:
Does anyone have an idea?
On 20.04.2015 21:12, Ming Lei wrote:
On Mon, Apr 20, 2015 at 4:07 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Hi Ming,
On 18.04.2015 00:23, Ming Lei wrote:
Does anyone have an idea?
As far as I can see, at least two problems exist:
- race between timeout and CPU hotplug
On 21.04.2015 00:48, Ming Lei wrote:
Thanks for providing that.
The trick is just in CPU number and virito-scsi hw queue number,
and that is why I asked that, :-)
Now the problem is quite clear, before CPU1 online, suppose
CPU3 is mapped hw queue 6, and CPU 3 will map to hw queue 5
after
On Sat, Apr 18, 2015 at 4:30 PM, Jens Axboe wrote:
> On 04/17/2015 10:23 PM, Ming Lei wrote:
>>
>> Hi Dongsu,
>>
>> On Fri, Apr 17, 2015 at 5:41 AM, Dongsu Park
>> wrote:
>>>
>>> Hi,
>>>
>>> there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
>>> Every time when a CPU is offlined,
On Sat, Apr 18, 2015 at 4:30 PM, Jens Axboe ax...@kernel.dk wrote:
On 04/17/2015 10:23 PM, Ming Lei wrote:
Hi Dongsu,
On Fri, Apr 17, 2015 at 5:41 AM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Hi,
there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
Every time when a
On 04/17/2015 10:23 PM, Ming Lei wrote:
Hi Dongsu,
On Fri, Apr 17, 2015 at 5:41 AM, Dongsu Park
wrote:
Hi,
there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
Every time when a CPU is offlined, some arbitrary range of kernel memory
seems to get corrupted. Then after a while,
On 04/17/2015 10:23 PM, Ming Lei wrote:
Hi Dongsu,
On Fri, Apr 17, 2015 at 5:41 AM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Hi,
there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
Every time when a CPU is offlined, some arbitrary range of kernel memory
seems to get
Hi Dongsu,
On Fri, Apr 17, 2015 at 5:41 AM, Dongsu Park
wrote:
> Hi,
>
> there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
> Every time when a CPU is offlined, some arbitrary range of kernel memory
> seems to get corrupted. Then after a while, kernel panics at random places
>
Hi,
there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
Every time when a CPU is offlined, some arbitrary range of kernel memory
seems to get corrupted. Then after a while, kernel panics at random places
when block IOs are issued. (for example, see the call traces below)
This bug
Hi,
there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
Every time when a CPU is offlined, some arbitrary range of kernel memory
seems to get corrupted. Then after a while, kernel panics at random places
when block IOs are issued. (for example, see the call traces below)
This bug
Hi Dongsu,
On Fri, Apr 17, 2015 at 5:41 AM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Hi,
there's a critical bug regarding CPU hotplug, blk-mq, and scsi-mq.
Every time when a CPU is offlined, some arbitrary range of kernel memory
seems to get corrupted. Then after a while, kernel
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