e seeing time spent waiting on fdatsync in
> bstore_kv_sync if the drives you are using don't have power loss
> protection and can't perform flushes quickly. Some consumer grade
> drives are actually slower at this than HDDs.
>
>
> Mark
>
>
> On 2/22/24 11:04, Work Ceph w
Hello guys,
We are running Ceph Octopus on Ubuntu 18.04, and we are noticing spikes of
IO utilization for bstore_kv_sync thread during processes such as adding a
new pool and increasing/reducing the number of PGs in a pool.
It is funny though that the IO utilization (reported with IOTOP) is
list [1].
>
> Regards,
> Eugen
>
> [1]
>
> https://lists.ceph.io/hyperkitty/list/ceph-users@ceph.io/thread/ZEMGKBLMEREBZB7SWOLDA6QZX3S7FLL3/#YAHVTTES6YU5IXZJ2UNXKURXSHM5HDEX
>
> Zitat von Work Ceph :
>
> > Hello guys,
> > We are facing/seeing an unexpected mar
Hello guys,
We are facing/seeing an unexpected mark in one of our pools. Do you guys
know what does "removed_snaps_queue" it mean? We see some notation such as
"d5~3" after this tag. What does it mean? We tried to look into the docs,
but could not find anything meaningful.
We are running Ceph
, 2023 at 12:31 PM Work Ceph
wrote:
> Thanks for the help so far guys!
>
> Has anybody used (made it work) the default ceph-iscsi implementation with
> VMware and/or Windows CSV storage system with a single target/portal in
> iSCSI?
>
> On Wed, Jun 21, 2023 at 6:02 AM M
Thank you all guys that tried to help here. We discovered the issue, and it
had nothing to do with Ceph or iSCSI GW.
The issue was being caused by a Switch that was acting as the "router" for
the network of the iSCSI GW. All end clients (applications) were separated
into different VLANs, and
Thanks for the help so far guys!
Has anybody used (made it work) the default ceph-iscsi implementation with
VMware and/or Windows CSV storage system with a single target/portal in
iSCSI?
On Wed, Jun 21, 2023 at 6:02 AM Maged Mokhtar wrote:
>
> On 20/06/2023 01:16, Work Ceph wrote:
>
inct difference.
>
>
>
> On Jun 23, 2023, at 09:33, Work Ceph
> wrote:
>
> Great question!
>
> Yes, one of the slowness was detected in a Veeam setup. Have you
> experienced that before?
>
> On Fri, Jun 23, 2023 at 10:32 AM Anthony D'Atri
> wrote:
>
>&
Hello guys,
We have a Ceph cluster that runs just fine with Ceph Octopus; we use RBD
for some workloads, RadosGW (via S3) for others, and iSCSI for some Windows
clients.
We started noticing some unexpected performance issues with iSCSI. I mean,
an SSD pool is reaching 100MB of write speed for an
rmance
> implementation. We currently use Ceph 17.2.5
>
>
> On 19/06/2023 14:47, Work Ceph wrote:
> > Hello guys,
> >
> > We have a Ceph cluster that runs just fine with Ceph Octopus; we use RBD
> > for some workloads, RadosGW (via S3) for others, and iSCSI for some
Hello guys,
We have a Ceph cluster that runs just fine with Ceph Octopus; we use RBD
for some workloads, RadosGW (via S3) for others, and iSCSI for some Windows
clients.
Recently, we had the need to add some VMWare clusters as clients for the
iSCSI GW and also Windows systems with the use of
Hello guys,
What would happen if we set up an RBD mirroring configuration, and in the
target system (the system where the RBD image is mirrored) we create
snapshots of this image? Would that cause some problems?
Also, what happens if we delete the source RBD image? Would that trigger a
deletion
spec
> Unprotect a snapshot from deletion (undo snap protect). If
> cloned children remain, snap unprotect fails. (Note that clones may
> exist in different pools than the parent snapshot.)
>
> Regards
>
> Reto
>
>
> Am Mi., 10. Mai 2023 um 20:58 Uhr
Hello guys,
We have a doubt regarding snapshot management, when a protected snapshot is
created, should it be deleted when its RBD image is removed from the system?
If not, how can we list orphaned snapshots in a pool?
___
ceph-users mailing list --
Hello guys!
Is it possible to restrict user access to a single image in an RBD pool? I
know that I can use namespaces, so users can only see images with a given
namespaces. However, these users will still be able to create new RBD
images.
Is it possible to somehow block users from creating RBD
te, the clients can be restarted using the new
> > target image name. Attempting to restart the clients using the
> > source image name will result in failure.
>
> So I don't think you can live-migrate without interruption, at least
> not at the moment.
>
> Regards,
Hello guys,
We have been reading the docs, and trying to reproduce that process in our
Ceph cluster. However, we always receive the following message:
```
librbd::Migration: prepare: image has watchers - not migrating
rbd: preparing migration failed: (16) Device or resource busy
```
We
uld this be a trick?
>
> If not - please share "ceph osd df tree" output?
>
>
> On 4/4/2023 2:18 PM, Work Ceph wrote:
>
> Thank you guys for your replies. The "used space" there is exactly that.
> It is the accounting for Rocks.DB and WAL.
> ```
>
>
r OSD?
> >
> > If so then highly likely RAW usage is that high due to DB volumes
> > space is considered as in-use one already.
> >
> > Could you please share "ceph osd df tree" output to prove that?
> >
> >
> > Thanks,
> >
> > Igor
32 0 B0 0 B 0115 TiB
rbd 6 32 0 B0 0 B 0115 TiB
```
On Mon, Apr 3, 2023 at 10:25 PM Work Ceph
wrote:
> Hello guys!
>
>
> We noticed an unexpected situation. In a recently deployed Ceph cluster we
> are see
Hello guys!
We noticed an unexpected situation. In a recently deployed Ceph cluster we
are seeing a raw usage, that is a bit odd. We have the following setup:
We have a new cluster with 5 nodes with the following setup:
- 128 GB of RAM
- 2 cpus Intel(R) Intel Xeon Silver 4210R
- 1
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