Hello Jason,
i updated the ticket https://tracker.ceph.com/issues/40822
Am 24.07.19 um 19:20 schrieb Jason Dillaman:
> On Wed, Jul 24, 2019 at 12:47 PM Marc Schöchlin wrote:
>>
>> Testing with a 10.2.5 librbd/rbd-nbd ist currently not that easy for me,
>> because the ceph apt source does not
On Wed, Jul 24, 2019 at 12:47 PM Marc Schöchlin wrote:
>
> Hi Jason,
>
> i installed kernel 4.4.0-154.181 (from ubuntu package sources) and performed
> the crash reproduction.
> The problem also re-appeared with that kernel release.
>
> A gunzip with 10 gunzip processes throwed 1600 write and
Hi Jason,
i installed kernel 4.4.0-154.181 (from ubuntu package sources) and performed
the crash reproduction.
The problem also re-appeared with that kernel release.
A gunzip with 10 gunzip processes throwed 1600 write and 330 read IOPS against
the cluster/the rbd_ec volume with a transfer
On 07/23/2019 12:28 AM, Marc Schöchlin wrote:
>>> For testing purposes i set the timeout to unlimited ("nbd_set_ioctl
>>> /dev/nbd0 0", on already mounted device).
>>> >> I re-executed the problem procedure and discovered that the
>>> >> compression-procedure crashes not at the same file, but
Hi Jason,
Am 24.07.19 um 00:40 schrieb Jason Dillaman:
>
>> Sure, which kernel do you prefer?
> You said you have never had an issue w/ rbd-nbd 12.2.5 in your Xen
> environment. Can you use a matching kernel version?
Thats true, our virtual machines of our xen environments completly run on
Hi Jason,
Am 23.07.19 um 14:41 schrieb Jason Dillaman
> Can you please test a consistent Ceph release w/ a known working
> kernel release? It sounds like you have changed two variables, so it's
> hard to know which one is broken. We need *you* to isolate what
> specific Ceph or kernel release
On Tue, Jul 23, 2019 at 6:58 AM Marc Schöchlin wrote:
>
>
> Am 23.07.19 um 07:28 schrieb Marc Schöchlin:
> >
> > Okay, i already experimented with high timeouts (i.e 600 seconds). As i can
> > remember this leaded to pretty unusable system if i put high amounts of io
> > on the ec volume.
> >
Am 23.07.19 um 07:28 schrieb Marc Schöchlin:
>
> Okay, i already experimented with high timeouts (i.e 600 seconds). As i can
> remember this leaded to pretty unusable system if i put high amounts of io on
> the ec volume.
> This system also runs als krbd volume which saturates the system with
Hi Mike,
Am 22.07.19 um 16:48 schrieb Mike Christie:
> On 07/22/2019 06:00 AM, Marc Schöchlin wrote:
>>> With older kernels no timeout would be set for each command by default,
>>> so if you were not running that tool then you would not see the nbd
>>> disconnect+io_errors+xfs issue. You would
Hi Mike,
Am 22.07.19 um 17:01 schrieb Mike Christie:
> On 07/19/2019 02:42 AM, Marc Schöchlin wrote:
>> We have ~500 heavy load rbd-nbd devices in our xen cluster (rbd-nbd 12.2.5,
>> kernel 4.4.0+10, centos clone) and ~20 high load krbd devices (kernel
>> 4.15.0-45, ubuntu 16.04) - we never
On 07/19/2019 02:42 AM, Marc Schöchlin wrote:
> We have ~500 heavy load rbd-nbd devices in our xen cluster (rbd-nbd 12.2.5,
> kernel 4.4.0+10, centos clone) and ~20 high load krbd devices (kernel
> 4.15.0-45, ubuntu 16.04) - we never experienced problems like this.
For this setup, do you have
On 07/22/2019 06:00 AM, Marc Schöchlin wrote:
>> With older kernels no timeout would be set for each command by default,
>> so if you were not running that tool then you would not see the nbd
>> disconnect+io_errors+xfs issue. You would just see slow IOs.
>>
>> With newer kernels, like 4.15,
Hello Mike,
i attached inline comments.
Am 19.07.19 um 22:20 schrieb Mike Christie:
>
>> We have ~500 heavy load rbd-nbd devices in our xen cluster (rbd-nbd 12.2.5,
>> kernel 4.4.0+10, centos clone) and ~20 high load krbd devices (kernel
>> 4.15.0-45, ubuntu 16.04) - we never experienced
On 07/19/2019 02:42 AM, Marc Schöchlin wrote:
> Hello Jason,
>
> Am 18.07.19 um 20:10 schrieb Jason Dillaman:
>> On Thu, Jul 18, 2019 at 1:47 PM Marc Schöchlin wrote:
>>> Hello cephers,
>>>
>>> rbd-nbd crashes in a reproducible way here.
>> I don't see a crash report in the log below. Is it
Hello Jason,
Am 18.07.19 um 20:10 schrieb Jason Dillaman:
> On Thu, Jul 18, 2019 at 1:47 PM Marc Schöchlin wrote:
>> Hello cephers,
>>
>> rbd-nbd crashes in a reproducible way here.
> I don't see a crash report in the log below. Is it really crashing or
> is it shutting down? If it is crashing
On Thu, Jul 18, 2019 at 1:47 PM Marc Schöchlin wrote:
>
> Hello cephers,
>
> rbd-nbd crashes in a reproducible way here.
I don't see a crash report in the log below. Is it really crashing or
is it shutting down? If it is crashing and it's reproducable, can you
install the debuginfo packages,
Hello cephers,
rbd-nbd crashes in a reproducible way here.
I created the following bug report: https://tracker.ceph.com/issues/40822
Do you also experience this problem?
Do you have suggestions for in depth debug data collection?
I invoke the following command on a freshly mapped rbd and
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