Gluster users - Feb 2015 - O_DIRECT (I think) again

O_DIRECT support in fuse has been for quite some time now, surely well
before 3.4

On Fri, Feb 13, 2015, 02:37 Pedro Serotto <pedro.serotto at yahoo.es>
wrote:
> Dear All,
>
> I am actually using the following software stack:
>
> debian wheezy with kernel 3.2.0-4-amd64, glusterfs 3.6.2, openstack Juno,
> libvirt 1.2.9.
>
> If I try to attach a block storage to a running vm, Openstack shows the
> following error:
> "DeviceIsBusy: The supplied device (vdc) is busy".
>
> If I try to attach a block storage to a running vm, Libvirt shows the
> following error:
>  "qemuMonitorTextAddDrive:2621 : operation failed: open disk image
file
> failed"
>
> Looking up for this issue on the web, I found out that Libvirt tries to
> open the block device by using  O_DIRECT flag on; This last one is
> supported only by fuse for kernel >3.4.
> Therefore, I tried to apply some options (
> http://www.gluster.org/documentation/use_cases/Virt-store-usecase/) to
> Gluster, but the problem has not been solved.
> I also found  https://github.com/avati/liboindirect but it is old and not
> mantained.
>
> Does somebody found himself in the same situation? If yes, could you
> please show me how to solve it by mainteining the same version of my
> software stack.
>
>
> Thanks&Regards
>
> Pedro
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://www.gluster.org/mailman/listinfo/gluster-users
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Hi,
We're using liboindirect and it's works. Regarding "not
mantained" - it's
not required bz this is very simple and short lib.

2015-02-13 18:55 GMT+03:00 Anand Avati <avati at gluster.org>:
> O_DIRECT support in fuse has been for quite some time now, surely well
> before 3.4
>
> On Fri, Feb 13, 2015, 02:37 Pedro Serotto <pedro.serotto at yahoo.es>
wrote:
>
>> Dear All,
>>
>> I am actually using the following software stack:
>>
>> debian wheezy with kernel 3.2.0-4-amd64, glusterfs 3.6.2, openstack
Juno,
>> libvirt 1.2.9.
>>
>> If I try to attach a block storage to a running vm, Openstack shows the
>> following error:
>> "DeviceIsBusy: The supplied device (vdc) is busy".
>>
>> If I try to attach a block storage to a running vm, Libvirt shows the
>> following error:
>>  "qemuMonitorTextAddDrive:2621 : operation failed: open disk image
file
>> failed"
>>
>> Looking up for this issue on the web, I found out that Libvirt tries to
>> open the block device by using  O_DIRECT flag on; This last one is
>> supported only by fuse for kernel >3.4.
>> Therefore, I tried to apply some options (
>> http://www.gluster.org/documentation/use_cases/Virt-store-usecase/) to
>> Gluster, but the problem has not been solved.
>> I also found  https://github.com/avati/liboindirect but it is old and
>> not mantained.
>>
>> Does somebody found himself in the same situation? If yes, could you
>> please show me how to solve it by mainteining the same version of my
>> software stack.
>>
>>
>> Thanks&Regards
>>
>> Pedro
>>
>>
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://www.gluster.org/mailman/listinfo/gluster-users
>
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://www.gluster.org/mailman/listinfo/gluster-users
>


-- 
Best regards,
Artem Kuzmitskiy
Severnoe DB JSC
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