[Gluster-users] O_DIRECT (I think) again

[Artem Kuzmitskiy]

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
>>
>>
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>> Gluster-users at gluster.org
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>
>
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-- 
Best regards,
Artem Kuzmitskiy
Severnoe DB JSC
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