[Gluster-users] [Gluster-devel] Is it possible to turn an existing filesystem (with data) into a GlusterFS brick ?

[Joe Julian]

Feature requests to in Bugzilla anyway. 

Create your volume with the populated brick as brick one. Start it and "heal full". 

On November 11, 2016 7:12:03 AM PST, Sander Eikelenboom <linux at eikelenboom.it> wrote:
>
>Friday, November 11, 2016, 3:47:26 PM, you wrote:
>
>> Reposting to gluster-users as this is not development related. 
>
>I posted @devel, because in the most likely case of "No", it could
>become a 
>feature request ;-)
>
>--
>Sander
>
>
>> On November 11, 2016 6:32:49 AM PST, Pranith Kumar Karampuri
><pkarampu at redhat.com> wrote:
>>  
>
>
>
>
>> On Fri, Nov 11, 2016 at 8:01 PM, Pranith Kumar Karampuri
><pkarampu at redhat.com> wrote:
>
>
>
>
>
>> On Fri, Nov 11, 2016 at 6:24 PM, Saravanakumar Arumugam
><sarumuga at redhat.com> wrote:
>
>
>>  
>>  On 11/11/2016 06:03 PM, Sander Eikelenboom wrote:
>>  
>>  L.S.,
>>  
>>  I was wondering if it would be possible to turn an existing
>filesystem with data
>>  (ext4 with files en dirs) into a GlusterFS brick ?
>>  
>>  It is not possible, at least I am not aware about any such solution
>yet.
>>  
>>  
>>  I can't find much info about it except the following remark at [1]
>which seems
>>  to indicate it is not possible yet:
>>  
>>          Data import tool
>>  
>>          Create a tool which will allow importing already existing
>data in the brick
>>          directories into the gluster volume.
>>          This is most likely going to be a special rebalance process.
>>  
>>  So that would mean i would always have to:
>>  - first create an GlusterFS brick on an empty filesystem
>>  - after that copy all the data into the mounted GlusterFS brick
>>  - never ever copy something into the filesystem (or manipulate it
>otherwise)
>>    used as a GlusterFS brick directly (without going through a
>GlusterFS client mount)
>>  
>>  because there is no checking / healing between GlusterFS's view on
>the data and the data in the
>>  underlying brick filesystem ?
>>  
>>  Is this a correct view ?
>>  
>>  
>>  you are right !
>>  Once the data is copied into Gluster, it internally creates
>meta-data about data(file/dir).
>>  Unless you copy it via Gluster mount point, it is NOT possible to
>create such meta-data.
>
>
>
>
>> No, it is possible. You just need to be a bit creative.
>
>
>> Could you let me know how many such bricks you have which you want to
>convert to glusterfs. It seems like you want replication as well. So if
>you give me all this information. With your help may be we can at least
>come up with a document on how this can be done.
>
>
>
>
>> Once the import is complete, whatever you are saying about not
>touching the brick directly and doing everything from the mount point
>holds. But we can definitely convert an existing ext4 directory
>structure into a volume.
>>  
>
>>  
>>  
>>  Thanks,
>>  Saravana
>
>>  
>>  _______________________________________________
>>  Gluster-devel mailing list
>>  Gluster-devel at gluster.org
>>  http://www.gluster.org/mailman/listinfo/gluster-devel
>>  

-- 
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