Note that NVMe-oF is GA'd as a part of tentacle. Earlier releases are limited/might not work. Regards, Aviv -----Original Message----- From: Eugen Block via dev <dev@ceph.io> Sent: Monday, 13 April 2026 13:26 To: Ernesto Puerta <epuertat@redhat.com> Cc: dev@ceph.io; ceph-users@ceph.io Subject: [EXTERNAL] Re: [ceph-users] Status of iSCSI-Gateway Yeah that's my first suspicion as well (HugePages), I'm gonna look into it. Thanks a lot! Zitat von Ernesto Puerta <epuertat@redhat.com>:

Maybe you're hitting issues configuring HugePages inside a VM? In any case, there's an #nvmeof Slack channel and the team is always quick to respond over there.

Kind Regards, Ernesto

On Mon, Apr 13, 2026 at 11:36 AM Eugen Block <eblock@nde.ag> wrote:

...

Hi,

thanks for your quick response.

The reason I'm asking about iSCSI is because I have been able to deploy and use it in earlier releases (the last one was probably Pacific), but I'm struggling with deploying NVMe-oF in a virtual lab cluster. I haven't had the time to really dig into it yet, so there's definitely a knowledge gap I need to close. Until I made some progress with NVMe-oF I thought maybe iSCSI could still be used. The use case is to grant access to an air-gapped Ceph cluster.

Thanks! Eugen

Zitat von Ernesto Puerta <epuertat@redhat.com>:

...

Hey Eugen,

AFAIK the Ceph NVMe-oF Gateway superseded the iSCSI one: it's actively maintained, more performant, scalable, secure and better integrated with the Ceph management & observability framework.

I'm curious: what's the target platform/use case for iSCSI that NVMe/TCP cannot fulfill?

Kind Regards, Ernesto

On Mon, Apr 13, 2026 at 8:58 AM Eugen Block via ceph-users < ceph-users@ceph.io> wrote:

...

Hi,

could someone clarify if using iscsi via cephadm is still supported or not? According to [0] it's "in maintenance" since November 2022, so no active development. But it's still documented in all active releases and can be deployed in Squid or Tentacle (though I haven't checked if it actually works). Is it still supported to use iSCSI?

Thanks! Eugen

[0] https://urldefense.proofpoint.com/v2/url?u=https-3A__docs.ceph.com _en_latest_rbd_iscsi-2Doverview_-23ceph-2Discsi&d=DwIFaQ&c=BSDicqB QBDjDI9RkVyTcHQ&r=Im4omk4NdceLPvgb6sEXw3r6y71Z9JDuTGk4GMFulW0&m=VD MpTn9kP-I6POYWFAW6K418IPSCrPIGEyC5M22ibV2sgB49EZVv3TE0VYFRXwsN&s=S pUmSLpyOcc2_lfh9pDoVoVxJCEwgOwDDvLgQah7Sl4&e= _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io