similar to: Tune and optimize dispersed cluster

Hi all, I have setup a dispersed cluster (2+1), verision 3.12. I guessed that we going to get punished by small read/writes... and I was right. A calculation that usually takes 48 hours took about 60 hours and there are many small read/writes to intermediate files that at the end get summed up. Is there a way to tune, optimize a dispersed cluster to work better with small read/writes? Many

Hi again, I have been testing and reading up on other solutions and just wanted to check if my ideas are ok. I have been looking at dispersed volumes and wonder if there are any problems running replicated-distributed cluster on the master node and a dispersed-distributed cluster on the slave side of a geo-replication. Second thought, running disperesed on both sides, is that a problem (Master:

Hi all, I am planning my new gluster system and tested things out in a bunch of virtual machines. I need a bit of help to understand how geo-replication behaves. I have a master gluster cluster replica 2 (in production I will use an arbiter and replicatied/distributed) and the geo cluster is distributed with 2 machines. (in production I will have the geo cluster distributed) Everything is up

Hi again, I made some more tests and the behavior I get is that if any of the slaves are down the geo-replication stops working. It this the way distributed volumes work, if one server goes down the entire system stops to work? The servers that are online do not continue to work? Sorry, for asking stupid questions. Best regards Marcus On Tue, Feb 06, 2018 at 12:09:40PM +0100, Marcus Peders?n

Thank you for your help! Just to make things clear to me (and get a better understanding of gluster): So, if I make the slave cluster just distributed and node 1 goes down, data (say file.txt) that belongs to node 1 will not be synced. When node 1 comes back up does the master not realize that file.txt has not been synced and makes sure that it is synced when it has contact with node 1 again? So

We are happy to help you out. Please find the answers inline. On Tue, Feb 6, 2018 at 4:39 PM, Marcus Peders?n <marcus.pedersen at slu.se> wrote: > Hi all, > > I am planning my new gluster system and tested things out in > a bunch of virtual machines. > I need a bit of help to understand how geo-replication behaves. > > I have a master gluster cluster replica 2 > (in

Hi, Thanks for reporting the issue. This seems to be a bug. Could you please raise a bug at https://bugzilla.redhat.com/ under community/glusterfs ? We will take a look at it and fix it. Thanks, Kotresh HR On Wed, Feb 21, 2018 at 2:01 PM, Marcus Peders?n <marcus.pedersen at slu.se> wrote: > Hi all, > I use gluster 3.12 on centos 7. > I am writing a snapshot program for my

Hi all, I use gluster 3.12 on centos 7. I am writing a snapshot program for my geo-replicated cluster. Now when I started to run tests with my application I have found a very strange behavior regarding geo-replication in gluster. I have setup my geo-replication according to the docs: http://docs.gluster.org/en/latest/Administrator%20Guide/Geo%20Replication/ Both master and slave clusters are

Hi all, I have problem pin pointing an error, that users of my system experience processes that crash. The thing that have changed since the craches started is that I added a gluster cluster. Of cause the users start to attack my gluster cluster. I started looking at logs, starting from the client side. I just need help to understand how to read it in the right way. I can see that every ten

Hi Kotresh, I am expecting my hardware to show up next week. My plan is to run gluster version 3.12 on centos 7. Has the issue been fixed in version 3.12? Thanks a lot for your help! /Marcus On Fri, Mar 02, 2018 at 05:12:13PM +0530, Kotresh Hiremath Ravishankar wrote: > Hi Marcus, > > There are no issues with geo-rep and disperse volumes. It works with > disperse volume > being

Marcus, Please paste the name-version-release of the primary glusterfs package on your system. If possible, also describe the typical workload that happens at the mount via the user application. On Tue, Jan 23, 2018 at 7:43 PM, Marcus Peders?n <marcus.pedersen at slu.se> wrote: > Hi all, > I have problem pin pointing an error, that users of > my system experience processes that

Yes, In first server (urd-gds-001): gluster peer probe urd-gds-000 gluster peer probe urd-gds-002 gluster peer probe urd-gds-003 gluster peer probe urd-gds-004 gluster pool list (from urd-gds-001): UUID Hostname State bdbe4622-25f9-4ef1-aad1-639ca52fc7e0 urd-gds-002 Connected 2a48a3b9-efa0-4fb7-837f-c800f04bf99f urd-gds-003 Connected ad893466-ad09-47f4-8bb4-4cea84085e5b urd-gds-004

Hi Markus, It looks quite well documented, but please use?https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.5/html/administration_guide/sect-replacing_hosts?as 3.5?is the latest version for RHGS. If the OS disks are failing, I would have tried?moving the data disks to the new machine and transferring the gluster files in /etc and /var/lib to the new node. Any reason to reuse

Hi Xavi, Copy the same info file worked well and the gluster 11 arbiter is now up and running and all the nodes are communication the way they should. Just another note on something I discovered on my virt machines. All the three nodes has been upgarded to 11.0 and are working. If I run: gluster volume get all cluster.op-version I get: Option Value ------

Marcus, Can you share server-side gluster peer probe and client-side mount command-lines. On Tue, Apr 10, 2018 at 12:36 AM, Marcus Peders?n <marcus.pedersen at slu.se> wrote: > Hi all! > > I have setup a replicated/distributed gluster cluster 2 x (2 + 1). > > Centos 7 and gluster version 3.12.6 on server. > > All machines have two network interfaces and connected to

Hi all! I have setup a replicated/distributed gluster cluster 2 x (2 + 1). Centos 7 and gluster version 3.12.6 on server. All machines have two network interfaces and connected to two different networks, 10.10.0.0/16 (with hostnames in /etc/hosts, gluster version 3.12.6) 192.168.67.0/24 (with ldap, gluster version 3.13.1) Gluster cluster was created on the 10.10.0.0/16 net, gluster peer

Hi all, I setup my gluster cluster with geo-replication a couple of weeks ago and everything worked fine! Today I descovered that one of the master nodes geo-replication status is faulty. On master side: Distributed-replicatied 2 x (2 + 1) = 6 On slave side: Replicated 1 x (2 + 1) = 3 After checking logs I see that the master node has the following error: OSError: Permission denied Looking at

Hi all! Today I have a small gluster replication on 2 machines. My plan is to scale this, I though need some feedback that how I plan things is in the right direction. First of all I have understood the need of an arbiter. When I scale this, say that I just have 2 replica and 1 arbiter, when I add another two machines can I still use the same physical machine as the arbiter? Or when I add

On 09/22/2017 02:25 AM, Kotresh Hiremath Ravishankar wrote: > The volume layout of geo-replication slave volume could be different > from master volume. > It's not mandatory that if the master volume is arbiter type, the > slave also needs to be arbiter. > But if it's decided to use the arbiter both at master and slave, then > the expansion rules is > applicable

Hi again Xavi, I did some more testing on my virt machines with same setup: Number of Bricks: 1 x (2 + 1) = 3 If I do it the same way, I upgrade the arbiter first, I get the same behavior that the bricks do not start and the other nodes does not "see" the upgraded node. If I upgrade one of the other nodes (non arbiter) and restart glusterd on both the arbiter and the other the arbiter