I see, thanks for the feedback guys! It is interesting that Ceph Manager does not allow us to export iSCSI blocks without selecting 2 or more iSCSI portals. Therefore, we will always use at least two, and as a consequence that feature is not going to be supported. Can I export an RBD image via iSCSI gateway using only one portal via GwCli? @Maged Mokhtar, I am not sure I follow. Do you guys have an iSCSI implementation that we can use to somehow replace the default iSCSI server in the default Ceph iSCSI Gateway? I didn't quite understand what the petasan project is, and if it is an OpenSource solution that we can somehow just pick/select/use one of its modules (e.g. just the iSCSI implementation) that you guys have. On Mon, Jun 19, 2023 at 10:07 AM Maged Mokhtar <mmokhtar@petasan.org> wrote:
Windows Clustered Shared Volumes and Failover Clustering require the support of clustered persistence reservations by the block device to coordinate access by multiple hosts. The default iSCSI implementation in Ceph does not support this, you can use the iSCSI implementation in PetaSAN project:
www.petasan.org
which supports this feature and provides a high performance 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 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 Clustered Storage Volumes (CSV), and we are facing a weird situation. In windows for instance, the iSCSI block can be mounted, formatted and consumed by all nodes, but when we add in the CSV it fails with some generic exception. The same happens in VMWare, when we try to use it with VMFS it fails.
We do not seem to find the root cause for these errors. However, the errors seem to be linked to the situation of multiple nodes consuming the same block by shared file systems. Have you guys seen this before?
Are we missing some basic configuration in the iSCSI GW? _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io