[Gluster-devel] empty xlator

[Lluís Pàmies i Juárez]

Hi Anand,

Yes I tried both things you mention and they work just fine.

Thanks
On Feb 5, 2014 9:29 PM, "Anand Avati" <avati at gluster.org> wrote:

> The nop xlator by itself seems OK. Have you tried the stripe config with
> the nop xlator on top? or even without the nop xlator?
>
> Avati
>
>
> On Wed, Feb 5, 2014 at 3:26 PM, Lluís Pàmies i Juárez <llpamies at pamies.cat
> > wrote:
>
>> Hello,
>>
>> As a proof of concept I'm trying to write a xlator that does nothing, I
>> call it "nop". The code for "nop.c" is simply:
>>
>> #include "config.h"
>> #include "call-stub.h"
>> struct xlator_fops fops = {};
>> struct xlator_cbks cbks = {};
>> struct xlator_dumpops dumpops = {};
>> struct volume_options options[] = {{.key={NULL}},};
>> int32_t init (xlator_t *this){return 0;}
>> int fini (xlator_t *this){return 0;}
>>
>>
>> And I compile it with:
>> $ gcc -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -DGF_LINUX_HOST_OS
>> -shared -nostartfiles -lglusterfs -lpthread -I${GFS}
>> -I${GFS}/libglusterfs/src -I${GFS}/contrib/uuid nop.c -o nop.so
>>
>> Then, if I try a test.vol file like that:
>>
>> volume test-posix
>>     type storage/posix
>>     option directory /home/llpamies/Projects/gluster/test-split/node0-data
>> end-volume
>>
>> volume test-nop
>>     type features/nop
>>     subvolumes test-posix
>>  end-volume
>>
>> volume test-cache
>>   type performance/io-cache
>>   subvolumes test-nop
>> end-volume
>>
>>
>> and mount it with:
>> $ glusterfs --debug -f test.vol /mount/point
>>
>> It seems to work fine, doing nothing. However, when used together with
>> the stripe xlator as follows:
>>
>> volume test-posix0
>>     type storage/posix
>>     option directory /home/llpamies/Projects/gluster/test-split/node0-data
>> end-volume
>>
>> volume test-posix1
>>     type storage/posix
>>     option directory /home/llpamies/Projects/gluster/test-split/node1-data
>> end-volume
>>
>> volume test-nop0
>>     type features/nop
>>     subvolumes test-posix0
>> end-volume
>>
>> volume test-nop1
>>     type features/nop
>>     subvolumes test-posix1
>> end-volume
>>
>> volume test-stripe
>>     type cluster/stripe
>>     subvolumes test-nop0 test-nop1
>> end-volume
>>
>>
>> Glusterfs hangs during the first fuse lookup for ".Trash", and
>> /mount/point looks unmounted with ???? permissions etc.
>>
>> Does it look like some bug in the stripe xlator or is there something
>> fundamentally wrong with the nop xlator?
>>
>> Thank you,
>>
>> --
>> Lluís
>>
>> _______________________________________________
>> Gluster-devel mailing list
>> Gluster-devel at nongnu.org
>> https://lists.nongnu.org/mailman/listinfo/gluster-devel
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://supercolony.gluster.org/pipermail/gluster-devel/attachments/20140206/d0e1289a/attachment-0001.html>