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Questions tagged [gfs2]

27 questions
21
votes
2 answers

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-kvm, I'm not sure), the virtual machine had crashed…
Volodymyr Melnyk
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8
votes
2 answers

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+ array, iSCSI LUN/target that allows multiple…
user2012899
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5
votes
1 answer

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 right way to configure gfs resource. Here is the rm…
Pavel A
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4
votes
4 answers

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 to a second server using drbd in active/passive…
Tiago
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3
votes
1 answer

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 rw,noatime,nodiratime,_netdev 0 0 Manually it…
Anton
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2
votes
1 answer

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 write roughly the same as we read. We need data…
Securez
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2
votes
0 answers

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 in different locations. The aim is to create a…
Fyodor Dostoyevsky
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2
votes
0 answers

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 flush I've already set vm.dirty_background_ratio=1…
Brian
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2
votes
1 answer

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 GFS2 cluster?
Travis Mijat
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2
votes
2 answers

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 deleting of such files, I do not need a full locking…
edomaur
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2
votes
0 answers

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 on this cluster. The legacy infrastructure that I…
Garrett
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1
vote
1 answer

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 used to uniquely identify this filesystem in a …
ggrandes
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1
vote
0 answers

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, but not on the other one. When I try to mount it I…
user2960593
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1
vote
0 answers

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 with GFS2 to create a cluster file system and…
Damon
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1
vote
1 answer

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 first time I ask cluster services it represent on…
Ben
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1
2