[Gluster-devel] Question on Geo-Replication

Mon Jul 23 12:39:36 UTC 2012

Hi Vijaykumar,
Thank you for quick response. :)

This is what happen in Our Lab. We are setting as below with Gluster 
3.3.0 on Debian

Server-C (company location) <=== AFR over WAN ===> { Server-A(ISP) ==Geo 
Replication over LAN ==> Server-B(ISP) }

I have configure geo replication for Volume (Vol01) which is created by 
Server-C brick and Server-A brick as AFR to A volume (Vol02) from 
Server-B's brick.
The Vol01 have some data in side.

On the replication is look like

Vol02
  |-- atest01.txt
  |-- atest01.mp3
  |-- home
  |   `-- users
  |-- test01.txt
  |-- test01.mp3

Not all the data and directory structure under /data are replicated, 
everything look OK except the data under /data/home/users/ is not 
appear. Even I try to copy some new file into /home/user/somchai directory.
However, I backed up data and recreated Vol01, Vol02 volume with same 
configure of replication. I copied data from backup to Vol01, and the 
replication is correct and complete on Vol02 with full directory tree. 
If there any thing about preexisting data with geo-replication ?

As Gluster troubleshooting guide said how to enforce full 
geo-replication by erasing index (page 115, section 14.2.3), and restart 
geo-replication but I don't see anything mention about erasing indexing 
in "Tuning Volume Options" as the document said.I would like to confirm 
the operation of erasing index is "set geo-replication.index=off" or 
remove ".glusterfs" under Vol01 and Vol02.

For the log file, I will see I can retrieve it or someone already delete 
them.

Thank you and Best Regards,
Pitichai

On 07/23/2012 03:05 PM, Vijaykumar Koppad wrote:
> Hi Pitichai,
>
>      It will be helpful to find out the problem, if you provide us
> with the log files and the configuration of the setup.
> And also the data set you are using , I mean the size and number of  files.
>
> Thanks,
> Vijaykumar
>
> ----- Original Message -----
> From: "Pitichai Pitimaneeyakul" <pitichai at 2-cans.com>
> To: "gluster-devel" <gluster-devel at nongnu.org>
> Sent: Saturday, July 21, 2012 1:53:24 PM
> Subject: [Gluster-devel] Question on Geo-Replication
>
>
>
>
> Hi there,
>
>
> I ran into problem of synchronization in geo-replication is not completed.
> And I found the the document say about force to full sync by erasing index and restart geo-replication
> as below from Gluster Document. Somehow I went to Tuning Volume Options, there is nothing mention about erasing index.
> Or it is just to set geo-replication.index=off and restart geo-replication ?
>
>
> ======
>
>
> Synchronization is not complete
>
> Description: GlusterFS Geo-replication did not synchronize the data completely but still the geo-replication status display OK.
>
> Solution: You can enforce a full sync of the data by erasing the index and restarting GlusterFS Geo-replication. After restarting, GlusterFS Geo-replication begins synchronizing all the data, that is, all files will be compared with by means of being checksummed, which can be a lengthy /resource high utilization operation, mainly on large data sets (however, actual data loss will not occur). If the error situation persists, contact Gluster Support.
>
> For more information about erasing index, see Tuning Volume Options .
>
> ======
>
> Thank you and Best Regards,
> Pitichai
>
> _______________________________________________
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> Gluster-devel at nongnu.org
> https://lists.nongnu.org/mailman/listinfo/gluster-devel

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