how to use the function ceph_open_layout

how to use the function ceph_open_layout

[鹏]

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 Hi all;
today,  I want to use the fuction of ceph_open_layout() in libcephFs.h

I creat a new pool  success,
# rados mkpool data1
and then I  edit the code like this:

int fd = ceph_open_layout( cmount, c_path, O_RDONLY|O_CREAT, 0666. (1<<22), 1, (1<<22) , "data1")

and then the fd is -22!!!!!!!!!

when I use the data pool , it can success
int fd = ceph_open_layout( cmount, c_path, O_RDONLY|O_CREAT, 0666. (1<<22), 1, (1<<22) , "data")

the ceph_open_layout support read/write to a new pool???

             thinks you for the help!
yous !






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Re: how to use the function ceph_open_layout

[Noah Watkins]

You'll need to register the new pool with the MDS:

    ceph mds add_data_pool <pool id>

On Thu, Jan 2, 2014 at 9:48 PM, 鹏 <wkp4666@126.com> wrote:
>  Hi all;
> today,  I want to use the fuction of ceph_open_layout() in libcephFs.h
>
> I creat a new pool  success,
> # rados mkpool data1
> and then I  edit the code like this:
>
> int fd = ceph_open_layout( cmount, c_path, O_RDONLY|O_CREAT, 0666. (1<<22),
> 1, (1<<22) , "data1")
>
> and then the fd is -22!!!!!!!!!
>
> when I use the data pool , it can success
> int fd = ceph_open_layout( cmount, c_path, O_RDONLY|O_CREAT, 0666. (1<<22),
> 1, (1<<22) , "data")
>
> the ceph_open_layout support read/write to a new pool???
>
>              thinks you for the help!
> yous !
>
>
>
>
>
>
>
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
_______________________________________________
ceph-users mailing list
ceph-users@lists.ceph.com
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

Re: [ceph-users] how to use the function ceph_open_layout

[Sage Weil]

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On Fri, 3 Jan 2014, ? wrote:
>  Hi all;
> today,  I want to use the fuction of ceph_open_layout() in libcephFs.h
> 
> I creat a new pool  success,
> # rados mkpool data1

You also need to do

ceph mds add_data_pool data1

sage

> and then I  edit the code like this:
> 
> int fd = ceph_open_layout( cmount, c_path, O_RDONLY|O_CREAT, 0666. (1<<22),
> 1, (1<<22) , "data1")
> 
> and then the fd is -22!!!!!!!!!
> 
> when I use the data pool , it can success
> int fd = ceph_open_layout( cmount, c_path, O_RDONLY|O_CREAT, 0666. (1<<22),
> 1, (1<<22) , "data")
> 
> the ceph_open_layout support read/write to a new pool???
> 
>              thinks you for the help!
> yous !
> 
> 
> 
> 
> 
>  
>  
> 
> 
> 
>