Hi everyone,
I've been running rbd-mirror between my old Ceph system (16.2.10) and my new
system (18.2.2). I'm using journaling mode on a pool that contains 7,500
images. Everything was running perfectly until it processed about 5,608 images.
Now, it keeps crashing with the following message:
Hi,
Following the introduction of an additional node to our Ceph cluster, we've
started to see unlink errors when taking a rbd mirror snapshot.
We've had RBD mirroring configured for over a year now and it's been working
flawlessly, however after we created OSD's on a new node we've receiving t
I've had rbd mirror deployed for over a year copying images from Site A to Site
B for DR.
After introducing an additional node into the cluster a few weeks back and
creating OSD's on this node (no mon/mgr) we've started to see snapshots
throwing an error 'librbd::mirror::snapshot::CreatePrimary
With RBD Mirroring configured from Site A to Site B, we typically see 2
snapshots on the source side (current and 1 previous) and 1 snapshot on the
destination side (most recent snapshot from source) - this has been the case
for over a year now.
When testing a DR scenario (i.e. demoting the pri
Hi,
Say, the source image is being updated and data is mirrored to destination
continuously.
Suddenly, networking of source is down and destination will be promoted and
used to
restore the VM. Is that going to cause any FS issue and, for example, fsck
needs to be
invoked to check and repair FS?
Hi,
We're testing with rbd-mirror (mode snapshot) and try to get status
updates about snapshots as fast a possible. We want to use rbd-mirror as
a migration tool between two clusters and keep downtime during migration
as short as possible. Therefore we have tuned the following parameters
and
Hi,
We are testing rbd-mirroring. There seems to be a permission error with
the rbd-mirror user. Using this user to query the mirror pool status gives:
failed to query services: (13) Permission denied
And results in the following output:
health: UNKNOWN
daemon health: UNKNOWN
image health: O
One of our customers is currently facing a challenge in testing our
disaster recovery (DR) procedures on a pair of Ceph clusters (Quincy
version 17.2.5).
Our issue revolves around the need to resynchronize data after
conducting a DR procedure test. In small-scale scenarios, this may not
be a signi
Hi,
The Ceph cluster is with Pacific v16.2.10.
"rbd mirror image enable journal" seems not working.
Any clues what I'm missing? There is no error messages from the CLI.
Any way to troubleshooting?
```
# rbd mirror pool info volume-ssd
Mode: image
Site Name: 35d050c0-77c0-11eb-9242-2cea7ff9d07c
Good morning,
I would be grateful if anybody could shed some light on this, I can't
reproduce it in my lab clusters so I was hoping for the community.
A customer has 2 clusters with rbd mirroring (snapshots) enabled, it
seems to work fine, they have regular checks and the images on the
remo
Hello Team,
Please help me i deploy two ceph cluster with 6 node configuration almost 800tb
of capacity. and configurae in the DC-DR configuration for the data high
availability. i eanbel the rwg and rbd block device mirroring for the
replocatio of the data. we have the 10 GBPS fiber replication
Hello All,
In the ceph quincy Not able to find
rbd_mirror_journal_max_fetch_bytes config
in rbd mirror
i configured the ceph cluster almost 400 tb and enable the
rbd-mirror in the
starting stage i'm able to achive the almost 9 GB speed , but after the rebalane
completed
Hello All,
In the ceph quincy Not able to find
rbd_mirror_journal_max_fetch_bytes config
in rbd mirror
i configured the ceph cluster almost 400 tb and enable the
rbd-mirror in the
starting stage i'm able to achive the almost 9 GB speed , but after the rebalane
completed
On Mon, Aug 1, 2022 at 2:33 PM Josef Johansson wrote:
>
>
>
>
> Forwarded Message
> Subject:rbd-mirror stops replaying journal on primary cluster
> Date: Thu, 2 Jun 2022 16:29:33 +0200 (CEST)
> From: Josef Johansson
> To: ceph-users@ceph.io
>
>
>
> Hi,
> I'm run
Hi,
I'm setting up RBD mirror between two Ceph clusters and have an issue to
set up rx-tx direction on primary site.
Issuing the command
rbd mirror pool peer bootstrap import --direction rx-tx --site-name
primary rbd token
I'm expecting the bi-directional mirror for the pool rbd. But I'm
Hi,
I understand that, for rbd mirror to work, the rbd mirror service requires the
connectivity to all nodes from both cluster.
In my case, for security purpose, the "public" network is actually a private
network,
which is not routable to external. All internal RBD clients are on that private
n
Hello All,
Please I would like to know if it is possibile two clusters can mirror rbd
to a third cluster.
In other words I have 3 separated ceph cluster : A B C.
I would like cluster A and cluster B can mirror some pools on cluster C.
Is it possible ?
Thanks
Ignazio
___
I have noticed that RBD-Mirror snapshot mode can only manage to take 1 snapshot
per second. For example I have 21 images in a single pool. When the schedule is
triggered it takes the mirror snapshot of each image 1 at a time. It doesn't
feel or look like a performance issue as the OSD's are Micr
I have a rbd-mirror snapshot on 1 image that failed to replicate and now its
not getting cleaned up.
The cause of this was my fault based on my steps. Just trying to understand how
to clean up/handle the situation.
Here is how I got into this situation.
- Created manual rbd snapshot on the
I have been doing some testing with RBD-Mirror Snapshots to a remote Ceph
cluster.
Does anyone know if the images on the remote cluster can be utilized in anyway?
Would love the ability to clone them, or even readonly would be nice.
___
ceph-users ma
Hi *,
I encountered a rather strange (or at least unexpected) behaviour of
the rbd-mirror. Maybe I don't fully understand the feature so please
correct me if my assumptions are wrong.
My two (virtual one-node) clusters are still on ceph version
15.2.4-864-g0f510cb110 and the following hap
Hi list,
I've awaited octopus for a along time to be able to use mirror with
snapshotting, since my setup does not allow for journal based
mirroring. (K8s/Rook 1.3.x with ceph 15.2.2)
However, I seem to be stuck, i've come to the point where on the
cluster on which the (non-active) replicas shoul
Hi all,
I'm gonna deploy a rbd-mirror in order to sync image from clusterA to
clusterB.
The image will be used while syncing. I'm not sure if the rbd-mirror will
sync image
continuously or not. If not, I will inform clients not to write data in it.
Thanks. Regards
Hello List,
i use rbd-mirror and i asynchronously mirror to my backup cluster.
My backup cluster only has "spinnung rust" and wont be able to always
perform like the live cluster.
Thats is fine for me, as far as it´s not further behind than 12h.
vm-194-disk-1:
global_id: 7a95730f-451c-4973-8
Hello List,
when i initially enable journal/mirror on an image it gets
bootstrapped to my site-b pretty quickly with 250MB/sec which is about
the IO Write limit.
Once its up2date, the replay is very slow. About 15KB/sec and the
entries_behind_maste is just running away:
root@ceph01:~# rbd --clus
Hello,
i am running luminous and i would like to back up my cluster from
Site-A to Site-B (one way)
So i decided to mirror it to an off-site ceph cluster.
I read: https://docs.ceph.com/docs/luminous/rbd/rbd-mirroring/
But i liked I https://github.com/MiracleMa/Blog/issues/2 a little better.
Bu
Dear Cephalopodians,
running 13.2.6 on the source cluster and 14.2.5 on the rbd mirror nodes and the
target cluster,
I observe regular failures of rbd-mirror processes.
With failures, I mean that traffic stops, but the daemons are still listed as
active rbd-mirror daemons in
"ceph -s", and the
Hi,
I have a working RBD Mirror Setup using ceph version 14.2.4 on both sides.
I want to have a clone of a non primay image.
I do it this way:
1. create snapshot of primary image
2. wait for the snapshot to appear on the backup cluster
3. create a clone in backup cluster (using Simplified RBD Im
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