Questions tagged [gfs2]

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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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Libvirt shared storage pool

I have what I hope is a quick question. I'm running: CENTOS 9 KVM/QEMU Pacemaker, DLM, lvmlockd, fence_scsi I have a simple two node KVM cluster where I've set up a LVM logical volume on a attached ...
JDW52's user avatar
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2 votes
0 answers
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Getting DRBD to boot up in a synchronized state from cold boot

I am working in an environment with an embedded High-Availability NVMeoF cluster, and need this cluster to be available within minutes of a cold power-on of all nodes, and trying to set up a RAID-10 ...
Garrett's user avatar
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1 answer
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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-...
Ray's user avatar
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1 answer
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GFS2: How rename clustername / lockspace / fsid / locktable name in Ubuntu 18.04

Some time ago I created my first GFS2 to do tests: mkfs.gfs2 -t cluster-test:gfs-vol1 -p lock_dlm -j 3 /dev/vg2/gfs-vol1 From mkfs.gfs2(8) man: -t clustername:lockspace The "lock table" pair ...
ggrandes's user avatar
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1 answer
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GFS2 single writer multiple readers setup

I'd like your advice on a setup I'm implementing in order to allow multiple hosts to share occasionally varying data on shared iSCSI storage. I'm using GFS2 to share access to an LVM2 logical volume ...
Isac Casapu's user avatar
1 vote
0 answers
421 views

cluster activation failing due to cman service

I have a 50TB SAN device, which inturn has two partitions. One of the partition is a gfs2 configured to be shared between two nodes. However, I'm having trouble mounting this partition on one node, ...
user2960593's user avatar
21 votes
2 answers
4k views

Very strange file size (more than 600 PB) on a small filesystem

I had a file on an XFS filesystem which size was about 200 GB. It was a QCOW2 image containing a virtual disk of a KVM-driven virtual machine. Something went wrong (maybe it was some glitch of qemu-...
Volodymyr Melnyk's user avatar
2 votes
1 answer
667 views

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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Run Server from Clustered File Server DRBD & GFS2

We are trying to eliminate a single point of failure for our files without a SAN. We currently have a single server for file serving (locally), web server, and database (in VM). Looking at using DRBD ...
Damon's user avatar
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2 answers
1k views

Which file system best handle multiple, concurrent write sessions [closed]

Which file system best handle multiple, concurrent write sessions Which file system can handle more concurrent write sessions; let’s say 32 write sessions? The file system has to handle 32 ...
Jijo John's user avatar
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mkfs.gfs2 failing silently on centos7 cluster?

I'm building a test cluster using centos7 and pacemaker, with shared storage on GFS2 over clustered LVM. I've set up a 2-node cluster, dlm and clvmd, both nodes can see the clustered logical volumes. ...
André Fernandes's user avatar
2 votes
0 answers
198 views

High Availability/failsafe two different locations

I am wondering if someone could help with the setup that does not seem so difficult. I am just beginning with the multi-server setup. I apologize if my questions are dumb. I have two debian servers ...
Fyodor Dostoyevsky's user avatar
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447 views

CentOs 6.5 GFS2 DRBD SAMBA CTDB : g_lock_force_unlock: Could not store record: NT_STATUS_UNSUCCESSFUL

My SAMBA cluster is unreliable, I noticed that from Windows desktop (on some occasion works fine but it is not reliable), on Ubuntu I'm getting this error (same is keep repeating in the log): [root@...
soiiid1953's user avatar
1 vote
1 answer
123 views

shared file system with rhcs

We have 2 node cluster which is attached with storage to share single parition between both cluster node. So for that we configure rhcs with gfs2. We aaded resources with gfs and ip address. So when ...
Ben's user avatar
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3 votes
1 answer
2k views

GFS2 over DRBD automount

I have 2 nodes Proxmox cluster. For KVM images I use DRBD device with GFS2 on it. Everything works fine except GFS2 automounting after server restart. I put in fstab: /dev/drbd0 /cluster/drbd0 gfs2 ...
Anton's user avatar
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9 votes
2 answers
11k views

Linux Filesystem options for iSCSI shared storage

I am trying to determine my 'best choice' for a filesystem to use for a shared storage device that will be mounted via iSCSI across an indeterminate number of servers. Setup: 27TB Synology RS2212+ ...
user2012899's user avatar
5 votes
1 answer
3k views

RHCS: GFS2 in A/A cluster with common storage. Configuring GFS with rgmanager

I'm configuring a two node A/A cluster with a common storage attached via iSCSI, which uses GFS2 on top of clustered LVM. So far I have prepared a simple configuration, but am not sure which is the ...
Pavel A's user avatar
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4 votes
4 answers
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Slow NFS and GFS2 performance

Recently I've designed and configured a 4 node cluster for a webapp that does lots of file handling. The cluster have been broken down into 2 main roles, webserver and storage. Each role is replicated ...
Tiago's user avatar
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1 vote
1 answer
1k views

Diagnosing SAN connectivity issues (RHEL5)

We are currently utilizing GFS2 to share a SAN LUN between 3 servers. However due to a feature problem with vendor software we are using, we currently have the volume unmounted on two of the boxes, ...
Matthew's user avatar
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1 vote
1 answer
2k views

NFS on top of GFS2 - does it work?

We're currently using a NoSQL derivative called Splunk to receive our data. The software supports something called "search head pooling" in which the job-dispatching engine is housed on several ...
Matthew's user avatar
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2 votes
0 answers
433 views

How to make background flushing more aggressive

I've got a system that is doing a continuous steady stream of writes to GFS2 filesystems, and what happens is that the cache builds up to vm.dirty_ratio and then load skyrockets during a synchronous ...
Brian's user avatar
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0 votes
2 answers
3k views

Configuring RHEL6.1 GFS cluster

I need to configure 3-node cluster with shared GFS2 filesystem. GFS2 needed as common Documentroot for apache behind the balancer. Can you suggest some guide on how to configure corosync+pacemaker+...
Dmytro Leonenko's user avatar
1 vote
0 answers
782 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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1 vote
1 answer
995 views

Permission denied message when starting gfs2

Can anyone please explain why I get this permission denied error? I try starting the script and it fails with a permission denied message. So I create a copy of it and run that instead and that works. ...
sashang's user avatar
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1 vote
2 answers
689 views

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 ...
Patrick R's user avatar
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2 votes
1 answer
1k views

How Does The Linux Disk Cache Work With iSCSI and GFS2?

I'm planning to share a GFS2 filesystem via iSCSI to my web servers. Are the files read by my web servers cached locally using the linux disk cache stored in memory or are they only cached on the ...
Travis Mijat's user avatar
2 votes
2 answers
1k views

Can I use ext3 as a shared fs if I add a lock manager?

I need a cluster filesystem for an iSCSI device. The problem is that the servers to which it is connected generate datafiles which must be read by every other servers. Except for the writing and ...
edomaur's user avatar
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