Re: [Gluster-devel] [Gluster-users] 3.7.12/3.8.qemu/proxmox testing

[Lindsay Mathieson]

On 4/07/2016 11:06 PM, Poornima Gurusiddaiah wrote:
Found the RCA for the issue, an explanation of the same can be found @https://bugzilla.redhat.com/show_bug.cgi?id=1352482#c8  
The patch for this, will follow shortly and hope to include it in 3.1.13


Brilliant, thanks all.

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Lindsay Mathieson

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Re: [Gluster-devel] [Gluster-users] 3.7.12/3.8.qemu/proxmox testing

[Atin Mukherjee]

On Mon, Jul 4, 2016 at 6:36 PM, Poornima Gurusiddaiah 
wrote:

>
> - Original Message -
> > From: "Lindsay Mathieson" 
> > To: "Kaushal M" , gluster-us...@gluster.org
> > Cc: "Gluster Devel" 
> > Sent: Monday, July 4, 2016 4:23:37 PM
> > Subject: Re: [Gluster-users] 3.7.12/3.8.qemu/proxmox testing
> >
> > On 4/07/2016 7:16 PM, Kaushal M wrote:
> > > An update on this, we are tracking this issue on bugzilla [1].
> > > I've added some of the observations made till now in the bug. Copying
> > > the same here.
> >
> > Thanks Kaushal, appreciate the updates.
> >
>
> Found the RCA for the issue, an explanation of the same can be found @
> https://bugzilla.redhat.com/show_bug.cgi?id=1352482#c8
> The patch for this, will follow shortly and hope to include it in 3.1.13
>

You meant 3.7.13, isn't it :)

Kaushal, RTalur, Poornima - Good work guys!



>
> Regards,
> Poornima
>
> >
> > --
> > Lindsay Mathieson
> >
> > ___
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> > http://www.gluster.org/mailman/listinfo/gluster-users
> >
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Re: [Gluster-devel] [Gluster-users] 3.7.12/3.8.qemu/proxmox testing

[Poornima Gurusiddaiah]

- Original Message -
> From: "Lindsay Mathieson" 
> To: "Kaushal M" , gluster-us...@gluster.org
> Cc: "Gluster Devel" 
> Sent: Monday, July 4, 2016 4:23:37 PM
> Subject: Re: [Gluster-users] 3.7.12/3.8.qemu/proxmox testing
> 
> On 4/07/2016 7:16 PM, Kaushal M wrote:
> > An update on this, we are tracking this issue on bugzilla [1].
> > I've added some of the observations made till now in the bug. Copying
> > the same here.
> 
> Thanks Kaushal, appreciate the updates.
> 

Found the RCA for the issue, an explanation of the same can be found @ 
https://bugzilla.redhat.com/show_bug.cgi?id=1352482#c8 
The patch for this, will follow shortly and hope to include it in 3.1.13

Regards,
Poornima

> 
> --
> Lindsay Mathieson
> 
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Re: [Gluster-devel] [Gluster-users] 3.7.12/3.8.qemu/proxmox testing

[Lindsay Mathieson]

On 4/07/2016 7:16 PM, Kaushal M wrote:

An update on this, we are tracking this issue on bugzilla [1].
I've added some of the observations made till now in the bug. Copying
the same here.


Thanks Kaushal, appreciate the updates.


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Re: [Gluster-devel] [Gluster-users] 3.7.12/3.8.qemu/proxmox testing

[Kaushal M]

On Mon, Jul 4, 2016 at 10:46 AM, Kaushal M  wrote:
> On Mon, Jul 4, 2016 at 9:47 AM, Dmitry Melekhov  wrote:
>> 01.07.2016 07:31, Lindsay Mathieson пишет:
>>>
>>> Started a new thread for this to get away from the somewhat panicky
>>> subject line ...
>>>
>>> Some more test results. I built pve-qemu-kvm against gluster 3.8 and
>>> installed, which would I hoped would remove any libglusterfs version
>>> issues.
>>>
>>> Unfortunately it made no difference - same problems emerged.
>>>
>> Hello!
>>
>> I guess there is problem on server side, because in Centos 7 libgfapi is
>> dynamically linked,
>> and, thus, is automatically upgraded. But we have the same problem.
>>
>
> Thanks for the updates guys. This does indicate something has changed
> in libgfapi with the latest update.
> We are still trying to identify the cause, and will keep you updated on this.
>

An update on this, we are tracking this issue on bugzilla [1].
I've added some of the observations made till now in the bug. Copying
the same here.

```
With qemu-img at least the hangs happen when creating qcow2 images.
The command doesn't hang when creating raw images.

When creating a qcow2 image, the qemu-img appears to be reloading the
glusterfs graph several times. This can be observed in the attached
log where qemu-img is run against glusterfs-3.7.11.

With glusterfs-3.7.12, this doesn't happen as an early writev failure
happens on the brick transport with a EFAULT (Bad address) errno (see
attached log). No further actions happen after this, and the qemu-img
command hangs till the RPC ping-timeout happens and then fails.
```
~kaushal
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1352482

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Re: [Gluster-devel] Question on merging zfs snapshot support into the mainline glusterfs

[B.K.Raghuram]

Hi Rajesh,

I did not want to respond to the question that you'd posed on the zfs
snapshot code (about the volume backend backup) as I am not too familiar
with the code and the person who's coded it is not with us anymore. This
was done in bit of a hurry so it could be that it was just kept for later..

However, Sriram who is cc'd on this email, has been helping us by starting
to look at the gluster code  and has expressed an interest in taking the
zfs code changes on. So he can probably dig out an answer to your question.
Sriram, Rajesh had a question on one of the zfs related patches - (
https://github.com/fractalio/glusterfs/commit/39a163eca338b6da146f72f380237abd4c671db2#commitcomment-18109851
)

Sriram is also interested in contributing to the process of creating a
generic snapshot interface in the gluster code which you and Pranith
mentioned above. If this is ok with you all, could you fill him in on what
your thoughts are on that and how he could get started?

Thanks!
-Ram

On Wed, Jun 22, 2016 at 11:45 AM, Rajesh Joseph  wrote:

>
>
> On Tue, Jun 21, 2016 at 4:24 PM, Pranith Kumar Karampuri <
> pkara...@redhat.com> wrote:
>
>> hi,
>>   Is there a plan to come up with an interface for snapshot
>> functionality? For example, in handling different types of sockets in
>> gluster all we need to do is to specify which interface we want to use and
>> ib,network-socket,unix-domain sockets all implement the interface. The code
>> doesn't have to assume anything about underlying socket type. Do you guys
>> think it is a worthwhile effort to separate out the logic of interface and
>> the code which uses snapshots? I see quite a few of if (strcmp ("zfs",
>> fstype)) code which can all be removed if we do this. Giving btrfs
>> snapshots in future will be a breeze as well, this way? All we need to do
>> is implementing snapshot interface using btrfs snapshot commands. I am not
>> talking about this patch per se. Just wanted to seek your inputs about
>> future plans for ease of maintaining the feature.
>>
>
> As I said in my previous mail this is in plan and we will be doing it. But
> due to other priorities this was not taken in yet.
>
>
>>
>> On Tue, Jun 21, 2016 at 11:46 AM, Atin Mukherjee 
>> wrote:
>>
>>>
>>>
>>> On 06/21/2016 11:41 AM, Rajesh Joseph wrote:
>>> > What kind of locking issues you see? If you can provide some more
>>> > information I can be able to help you.
>>>
>>> That's related to stale lock issues on GlusterD which are there in 3.6.1
>>> since the fixes landed in the branch post 3.6.1. I have already provided
>>> the workaround/way to fix them [1]
>>>
>>> [1]
>>>
>>> http://www.gluster.org/pipermail/gluster-users/2016-June/thread.html#26995
>>>
>>> ~Atin
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>>
>>
>>
>> --
>> Pranith
>>
>
>
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