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List:       ceph-users
Subject:    [ceph-users] Re: Mount CEPH-FS on multiple hosts with concurrent access to the same data objects?
From:       Wout van Heeswijk <wout () 42on ! com>
Date:       2020-09-21 19:12:09
Message-ID: AM4P190MB0131571D498D9AD664BB259AAB3A0 () AM4P190MB0131 ! EURP190 ! PROD ! OUTLOOK ! COM
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Hi Rene,

Yes, cephfs is a good filesystem for concurrent writing. When using CephFS =
with ganesha you can even scale out.

It will perform better but why don't you mount CephFS inside the VM?

Kind regards,

Wout
42on

________________________________________
From: Ren=E9 Bartsch <rene.bartsch@zinal-consulting.de>
Sent: Monday, September 21, 2020 6:44 PM
To: ceph-users@ceph.io
Subject: [ceph-users] Mount CEPH-FS on multiple hosts with concurrent acces=
s to the same data objects?

I'm new on the list,

so a "Hello" to all! :-)

We're planning a Proxmox-Cluster. The data-center operator advised to
use a virtual machine with NFS on top of a single CEPH-FS instance to
mount the shared CEPH-FS storage on multiple hosts/VMs.

As this NFS/CEPH-FS-VM could be a bottle-neck I was wondering if CEPH-
FS is capable to manage concurrent access and locking itself.

Is it possible to mount CEPH-FS instances on multiple hosts (e.g. /srv)
 all accessing the same data objects without data-loss or dead-locks by
concurrent access?

Will this perform better than a single NFS/CEPH-FS instance (VM)?

Thanx for any hint

Renne
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