Questions tagged [ocfs2]

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OCFS2 filesystem not mounting

I have an OCFS2 cluster running on top of a dual-primary DRBD setup on Ubuntu 16.04. Yesterday, I pushed this cluster into production and it seemed to run well for a while. But today, the cluster ...
Oldskool's user avatar
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2 votes
1 answer
159 views

OEL 7.2 with LACP systemd shutdowns networking before umounting _netdev filesystems

I've built an NFS cluster with OCFS2 as a backing filesystem. This is working quite well with the exception of when a node is restarted/shutdown cleanly it causes a fence operation as network is ...
stuntkiwi's user avatar
2 votes
1 answer
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What distributed FS, with small files read / write workload perform better?

I have 2 machines sharing storage via iscsi (multipath), soon we add another one, this machines are Web app servers that read small files on shared storage ( < 256kB), and write them back. so we ...
Securez's user avatar
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789 views

Ubuntu Server mdadm drbd ocfs2 kvm hangs under heavy file reading

I have deployed four ubuntu 10.04 server. They are coupled two by two in a cluster scenario. on both sides we have software raid1 disks, drbd8 and OCFS2 and on top of it some kvm machines run with ...
Stefano Annese's user avatar
1 vote
0 answers
248 views

State of OCFS2 as KVM storage for QCOW2 format

Using a shared iSCSI SAN all SSD and good cluster aware filesystems are few and far between with Linux. What is the state of OCFS2 with modern Linux kernels and is it considered reliable enough to ...
pieterk's user avatar
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227 views

Running iSCSI LIO with high availability

I've build a two node storage setup with OCFS on top of DRBD to provide storage for a couple of ESXi servers. Will it be possible to setup iSCSI targets on both storage nodes and make one of the nodes ...
SteffenNielsen's user avatar
1 vote
1 answer
2k views

VM iscsi disk crashes on one VM Host, not on the other

I have a VmWare solution running on a HP bladesystem with a Lefthand ISCSI san. There are currently two VmWare hosts in that environment. I have two Debian VM's sharing an ISCSI disk (with ocfs2), ...
Berzemus's user avatar
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1 vote
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DBRD dual primary Heartbeat resource management

I have the following setup: Two servers with DRBD running dual primary with OCFS2 Heartbeat with two virtual ips, one for each server Round robin DNS to load balance NFS across the two vIPs Shutting ...
Jon Skarpeteig's user avatar
1 vote
0 answers
779 views

OCFS2/GFS2 dlm_join_lockspace no fence domain

Ripping my hair out on a new Pacemaker/cman/(OCFS2|GFS) config. I can't use the Pacemaker integration with OCFS2, since the Fedora team, in their wisdom, decided to remove the .pcmk. Supposedly, I ...
phresus's user avatar
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Azure Managed Lustre or another setup that allows Ubuntu VMs to perform parallel read/write operations to a shared block storage in the cloud?

I set up Azure Managed Lustre with 8TB and maximum throughput 4GB/s. Following the official docs for an Ubuntu 20.04 VM with size Standard_L8as_v3, I manage to mount the file system. Then I test my ...
Louie_the_unsolver's user avatar
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Failed configuring active-active shared disk with drbd and pacemaker

I followed Clusters from Scratch instructions, chapters 8 and 9, to configure an active-active, shared disk cluster with drbd and pacemaker. The difference with that tutorial is that I am using OCFS2 ...
user2309000's user avatar
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1 answer
209 views

Mixed ocfs2 clusters: direct access and iscsi

Good morning, I have this configuration: diagram of configuration One "shared disk" with one partition formatted as OCFS2 Host A and host B with direct access to the "shared disk" Host C with direct ...
matlocat's user avatar
0 votes
1 answer
1k views

ocfs2 and packemaker without ocf:pacemaker:o2cb

In ubuntu 16.04 ocfs:pacemaker:o2cb not work anymore but i cant find any document that describe ocfs2 with packeamker without ocf:pacemaker:o2cb I have drbd device and work fine with pacemaker, but ...
Behrad Eslamifar's user avatar
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1 answer
356 views

View OCFS2 online nodes using command line?

I want to see which nodes is currently online in my OCFS2 cluster, how can I accomplish it using command line tools? OCFS2 Tools: 1.8.0-10.el6 UEK Kernel: 2.6.39-400.264.4.el6uek OS: CentOS 6.7
weeix's user avatar
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1 answer
476 views

Expanding/Growing OCFS2 forever

I have a kvm environment where a shared disk mounted by 2 VMs through rbd ceph. What I would like to know that in the future how is it possible to expand OCFS2 filesystem what I planning to use on top ...
pluto73's user avatar
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Why both nodes in OCFS2 cluster keep rebooting?

We created an OCSFS2 cluster by using SUSE Linux High Availability Extensions on SLES SP3. The cluster nodes are two Apache servers which share one disk. We have stonith enabled and SBD daemon. It ...
jonathan.vargas.cr's user avatar
0 votes
1 answer
671 views

OCFS2 "Heartbeat generation mismatch on device" error when mounting iscsi target

As said in the title, when I want to mount a iSCSI target on one machine I get the following error: (o2hb-3F92114867,7826,3):o2hb_check_own_slot:590 ERROR: Heartbeat generation mismatch on device (...
Danijel Krmar's user avatar