similar to: ceph vs gluster as libvirt backend

Hi all, I am looking in to ceph and cephfs and in my head I am comparing with gluster. The way I have been running gluster over the years is either a replicated or replicated-distributed clusters. The small setup we have had has been a replicated cluster with one arbiter and two fileservers. These fileservers has been configured with RAID6 and that raid has been used as the brick. If disaster

Hi there, I met one problem that guest fail to boot up when Selinux is enabled with guest storage based on ceph. However, I can boot the guest with qemu directly. I also can boot it up with Selinux disabled. Not sure it is a libvirt bug or wrong use case. 1. Enable Selinux # getenforce && iptables -L Enforcing Chain INPUT (policy ACCEPT) target prot opt source destination

Il 14/12/2023 16:08, Joe Julian ha scritto: > With ceph, if the placement database is corrupted, all your data is lost > (happened to my employer, once, losing 5PB of customer data). From what I've been told (by experts) it's really hard to make it happen. More if proper redundancy of MON and MDS daemons is implemented on quality HW. > With Gluster, it's just files on

On December 17, 2023 5:40:52 AM PST, Diego Zuccato <diego.zuccato at unibo.it> wrote: >Il 14/12/2023 16:08, Joe Julian ha scritto: > >> With ceph, if the placement database is corrupted, all your data is lost (happened to my employer, once, losing 5PB of customer data). > >From what I've been told (by experts) it's really hard to make it happen. More if proper

Big raid isn't great as bricks. If the array does fail, the larger brick means much longer heal times. My main question I ask when evaluating storage solutions is, "what happens when it fails?" With ceph, if the placement database is corrupted, all your data is lost (happened to my employer, once, losing 5PB of customer data). With Gluster, it's just files on disks, easily

On Wed, Jan 15, 2014 at 05:47:35PM -0500, Joshua Dotson wrote: > Hi, > > I'm trying to build an active/active virtualization cluster using a Ceph > RBD as backing for each libvirt-managed LXC. I know live migration for LXC > isn't yet possible, but I'd like to build my infrastructure as if it were. > That is, I would like to be sure proper locking is in place for

On 06/07/2013 04:18 PM, John Nielsen wrote: > On Jun 7, 2013, at 5:01 PM, Josh Durgin <josh.durgin@inktank.com> wrote: > >> On 06/07/2013 02:41 PM, John Nielsen wrote: >>> I am running some qemu-kvm virtual machines via libvirt using Ceph RBD as the back-end storage. Today I was testing an update to libvirt-1.0.6 on one of my hosts and discovered that it includes this

Hello everybody, virt-install --version 1.4.0 How do I create a ceph network disk with virt-install without having to edit it? <disk type='network' device='disk'> <driver name='qemu' type='raw'/> <auth username='libvirt'> <secret type='ceph' uuid='ec9be0c4-a60f-490e-af83-f0f27aaf48c9'/>

Hi, some time back we had similar discussions when we, as an email provider, discussed to move away from traditional NAS/NFS storage to Ceph. The problem with POSIX file systems and dovecot is that e.g. with mdbox only around ~20% of the IO operations are READ/WRITE, the rest are metadata IOs. You will not change this with using CephFS since it will basically behave the same way as e.g. NFS. We

Hello Jack, yes, I imagine I'll have to do some work on tuning the block size on cephfs. Thanks for the advise. I knew that using mdbox, messages are not removed but I though that was true in sdbox too. Thanks again. We'll soon do benchmarks of sdbox vs mdbox over cephfs with bluestore backend. We'll have to do some some work on how to simulate user traffic, for writes and readings.

Hi everybody, my background: I'm doing Xen since 10++ years, many years with DRBD for high availability, since some time I'm using preferable GlusterFS with FUSE as replicated storage, where I place the image-files for the vms. In my current project we started (successfully) with Xen/GlusterFS too, but because the provider, where we placed the servers, uses widely CEPH, we decided to

On 06/07/2013 02:41 PM, John Nielsen wrote: > I am running some qemu-kvm virtual machines via libvirt using Ceph RBD as the back-end storage. Today I was testing an update to libvirt-1.0.6 on one of my hosts and discovered that it includes this change: > [libvirt] [PATCH] Forbid use of ':' in RBD pool names > ...People are known to be abusing the lack of escaping in current

On Jun 7, 2013, at 5:01 PM, Josh Durgin <josh.durgin@inktank.com> wrote: > On 06/07/2013 02:41 PM, John Nielsen wrote: >> I am running some qemu-kvm virtual machines via libvirt using Ceph RBD as the back-end storage. Today I was testing an update to libvirt-1.0.6 on one of my hosts and discovered that it includes this change: >> [libvirt] [PATCH] Forbid use of ':'

Hi, I'm trying to build an active/active virtualization cluster using a Ceph RBD as backing for each libvirt-managed LXC. I know live migration for LXC isn't yet possible, but I'd like to build my infrastructure as if it were. That is, I would like to be sure proper locking is in place for live migrations to someday take place. In other words, I'm building things as if I were

hi all： I use openstack icehouse and libvirt 0.10 version use the quem+ceph to save vm disk when I do serval operation for example migrate vm、snapshot vm the libvirtd will be hang I guess whether the ceph rbd will cause this error anyone can help me? Wang Liming

hi is ovirt useable with xen? is there any doc/howto how to use it? Am 2015-10-12 15:04, schrieb Sven Kieske: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > > > On 12/10/15 10:13, Nux! wrote: >> Hi Nir, >> >> I have not tried to use Ovirt with Ceph, my question was about >> libvirt and was directed to ask the question here, sorry for the

Thanks Jack. That's good to know. It is definitely something to consider. In a distributed storage scenario we might build a dedicated pool for that and tune the pool as more capacity or performance is needed. Regards, Webert Lima DevOps Engineer at MAV Tecnologia *Belo Horizonte - Brasil* *IRC NICK - WebertRLZ* On Wed, May 16, 2018 at 4:45 PM Jack <ceph at jack.fr.eu.org> wrote:

On Mon, Aug 06, 2018 at 09:19:59PM +0200, Jelle de Jong wrote: > Hello everybody, > > virt-install --version > 1.4.0 > > How do I create a ceph network disk with virt-install without having to > edit it? > > <disk type='network' device='disk'> > <driver name='qemu' type='raw'/> > <auth

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello everybody, I created a rbd pool and activated it, but I can't seem to create volumes in it with virsh or virt-install? # virsh pool-dumpxml myrbdpool <pool type='rbd'> <name>myrbdpool</name> <uuid>2d786f7a-2df3-4d79-ae60-1535bcf1c6b5</uuid> <capacity

Hey guys: I have a running vm with ceph backend: root@apc20-005:~# virsh list > Id Name State > ---------------------------------- > 56 one-240 running And *snapshot-create-as* works well: root@apc20-005:~# virsh snapshot-create-as one-240 > Domain snapshot 1380009353 created But when exec *snapshot-revert*, error occurs: root@apc20-005:~# virsh