Questions tagged [ocfs2]

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Setting up OCFS2 on RockyLinux

anyone has experienced OCFS2 fs on RockyLinux 8.5? I'm searching a solution to sharing a single iscsi LUN between multiples server, but I didn't find any useful info. I read about GFS2, but appears to ...
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OCFS2 allows multiple partitions?

I have a perfectly working cluster of 13 nodes. I would like to add another (secondary) partition into this cluster. By running though the command "mkfs.ocfs2 "PartName" /dev/sxx" ...
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Add more nodes on a live OCFS2 cluster

I have a OCFS cluster with 4 nodes at the moment. I would like to add another 6. What I did: I edited the /etc/ocfs2/cluster.conf file and added all the desirable nodes. Then I copied to all the ...
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Single SAN with ocfs2 and gfs2

I have a single SAN with two virtual drives. (i.e., they are separate mounts, but they are mapped to the same IP address) For example, if I do ls /dev/disk/by-path/, I see this: ip-172.16.100.5:3260-...
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OCFS2 file system mounted as read-only

I have a problem with an Oracle Cluster Filesystem (ocfs2) attached to a cluster of Ubuntu 20.04 servers. The file system keeps getting mounted as read-only. Unfortunately, I know the cause since ...
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iSCSI separation from Ethernet via VLAN

I've set up a small cluster of a few servers along with a SAN. The servers are running Ubuntu 20.04 LTS. Using instructions provided by the vendor (I can't find where I read it before), they ...
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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 ...
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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 ...
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OCFS2 Adding nodes

i have vms that run nginx and php fpm on separate machines, for now i use a very stupid method of synchronizing directories by hand since cluster is not that big. However i have another server laying ...
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cheap, commodity hardware based, highly available distributed filesystem [closed]

I have two PCs running linux, a 2 TB disk each and one small gigabit switch. To build a highly available system on the cheap, I resorted to this stack: custom 5.6 kernel with ZFS and DRBD9 on both ...
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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 ...
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OCFS2 on Ubuntu 18.04 - Missing Kernal Modules

I am trying to setup OCFS2 on a few servers running Ubuntu 18.04. I started by installing ocfs2-tools and then setting up things from there. The issue I cannot solve appears to be the system is ...
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Can 2 servers share the same ocfs2 FS via NFS?

The problem is the following: I have 2 servers that have a FS mounted as ocfs2: root [server01]% mount | grep ocfs2 ocfs2_dlmfs on /dlm type ocfs2_dlmfs (rw) /dev/sddlmam1 on /share type ocfs2 (rw,...
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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 ...
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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 ...
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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 ...
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Get free capacity of an ocfs2 volume

I want to get free capacity of an ocfs2 volume (ocfs2-tools version 1.6), which is not mounted any where. Is there way to do that. Thanks
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Mounting multipath devices by UUID in fstab

I have several multipath iSCSI LUN's formatted as ocfs2 filesystems. They are part of an Ubuntu 14.04 cluster using local heartbeat. This all appears to be working fine if I mount them manually after ...
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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
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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 ...
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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 ...
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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 ...
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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 (...
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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 ...
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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), ...
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Dual Primary OCFS2 DRBD encountered split-brain. Is recovery always going to be manual in this case?

I've got two webservers which each have a disk attached. This disk is synced between them using drbd (2:8.3.13-1.1ubuntu1) in 'dual-primary' mode, and over the top of this I run ocfs2 (1.6.4-1ubuntu1) ...
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What is the best storage for active-active linux cluster? [closed]

We have a cluster with multiple ubuntu machines which are connected to a shared SAN storage. Initially we were using OCFS2 as file system but we were hit with so many issues and we couldn't find ...
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2 votes
1 answer
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puppet templates: possible to print the size of an exported resource array?

I'm writing a puppet module for ocfs2 and making use of exported resources to populate the definitions of all the cluster nodes in the config file on each cluster. This all works well. The cluster ...
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Issue with Apache flat files on OCFS2 on SAN

I have a pretty basic Apache two node cluster with flat files on SAN using OCFS2 file system mounted on both nodes.The website is working as expected, but I see a lot of the following messages in both ...
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mount.ocfs2: Transport endpoint is not connected while mounting...?

I have replaced a dead node that was running in dual-primary mode with OCFS2. All the steps work: /proc/drbd version: 8.3.13 (api:88/proto:86-96) GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 ...
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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 ...
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7 votes
3 answers
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DRBD configuration

I was going through the configuration of DRBD on two nodes. The DRBD has already configured, but I would like to enable the dual primary mode feature. On drbd site I have seen that it requires the ...
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Folder shares over NFSv4 private to user groups

I want to share a folder over NFSv4, available to some users, and I'm having permission issues. I set up the folder permissions with setGID so new files are created with the folder group owner. But ...
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11 votes
3 answers
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Can not switch drbd to secondary

I'm running drbd83 with ocfs2 in centos 5 and planning to use packemaker with them. Afer some time, I'm facing drbd split brain problem. version: 8.3.13 (api:88/proto:86-96) GIT-hash: ...
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NFS exportfs spamming logs. Is this a broken setup?

I have a NFS server running Ubuntu 10.04, serving an OCFS2 filesystem. The setup is somehow complicated because the server has Heartbeat and Pacemaker installed to make a cluster with another server. ...
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Ocfs2 volume sharing between hostOS and VM with KVM on Ubuntu

I'm trying to setup ocfs2 on Ubuntu Oneiric Server (3.0 kernel). I'm sharing a LV from a VG on the host. The HostOS is Ubuntu Lucid (also on a 3.0 kernel). I can share the ocfs2 partition on the ...
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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 ...
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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 ...
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OCFS Configuration

I'm setting up a Virtual Machine, and I'm trying to get OCFS to allow redundancy across two devices. It looks to be working in configuration, but it's not actually syncing the files across: /etc/...
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clustered file system choice for KVM/XEN in Fibre Channel Environment

Gents, what would you recommend for production use in a FC environment, where live migration is a must? Which clustered file system should we use? OCFS2? Would you still need drbd? Thanks!
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o2cb thinks ocfs2 cluster is still online, and refuses to shut down

I have a handful of OpenSuSE 11.2 servers that utilize OCFS2 volumes. I've noticed that o2cb can't figure out when the OCFS2 cluster is actually mounted. For example, when I try to shutdown o2cb, ...
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OCFS2: "Bad magic number in inode" every time mounting specific volume; fsck fixes it?

I have 5 OCFS2 volumes on an iSCSI SAN that a handful (5) of servers mount. There is one volume in particular that never mounts cleanly after reboot. The error you get when trying to mount is ...
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OCFS2 updating procedures

We plan to use OCFS2 in a project running Red Hat Enterprise Linux (RHEL) 5.6 because we found OCFS2 to be much simpler to set up than GFS. I am, however, worried about the upgrade process since I ...
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LinuxHA cluster, advice needed regarding shared storage

I'm setting up a two-node Heartbeat+Pacemaker cluster to run Xen domUs in a fail-over and live-migrate type environment. Storage is a LUN on an (EqualLogic) iSCSI SAN device. I initially wanted to ...
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XFS I/O Error accessing Logical Block 0 of an LVM snapshot: is the drive or snapshot bad?

I have OpenSuSE 11.3 running as a Xen host on a machine with 8x296GB Cheetah 15k.6 SAS disks, 4 of which are mirrored, the other 4 striped. I'm using LVM to manage the disks and they are formatted ...
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vmware vmdk disk problem

I have a VMware ESXi 4 server and 2 storage servers (mounted via nfs). Between the storage servers (Fedora 14) is a drbd cluster (dual primary) and ocfs2 filesystem; also every server has a local ...
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How long does it take to create an OCFS2 filesystem on a 1TB disk?

I'm creating an OCFS2 fs for use with DRBD and it's taking an awful long time to create the filesystem. I haven't done it before so I'm wondering if someone with more experience can relate how long ...
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ocfs2 v1.6 for CentOS 5.5

does someone know how/where to get newest ocfs2 version 1.6 for CentOS? from oracle site I was able to download only 1.4 . but this version hasn't a lot of features as you can see , there is only 1....
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OCFS2 + DRBD8 + MD mirror + PERC 6/iR + SATA 500GB = serious I/O problems?

I have reports that I/O on a certain filesystem, namely /srv/data1, is intermittently horrific. I've seen it myself and it's true. For example, I run 'ls' /srv/data1 and the output takes 30+ seconds ...
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ubuntu cluster - so close but so far

Here's the set up: Two Ubuntu 9.10 servers - LAMP environment (not really an option to switch OS) One MD3000i with iscsi connection Here's what I'd like to do: Have both server see the files that ...
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