On 10-02-2025 12:26, Iban Cabrillo wrote:
Good morning,
I wanted to inquire about the status of the Ceph iSCSI gateway service. We currently have several machines installed with this technology that are working correctly,
although I have seen that it appears to be discontinued since 2022. My question is whether to continue down this path, adding machines, or whether it will be discontinued in new Ceph distributions.
Best regards and thanks in advance.
We are using LIO (targetcli) with rbd-nbd (can also be used with krbd).
We have made it HA by modifying CTDB scripts (Samba HA solution) in a
three node setup. To prevent split-brain a recovery lock on a ceph
object is used (recovery lock =
!/usr/local/bin/ctdb_mutex_ceph_rados_helper ceph client.$client
poolname ctdb_sgw_rbd_recovery_lock 10).
This setup also supports SCSI persistent reservations, a requirement for
a version of MSSQL cluster that uses shared storage.
This does not do any fancy stuff like tcmu-runner can do with ALUA
(multi-path). So you are bound to a single node for performance. But for
us this is more than good enough. As soon as NVMeOF supports persistent
SCSI reservations we will make the shift to NVMeOF [1].
Gr. Stefan
[1]: https://github.com/ceph/ceph-nvmeof/issues/41
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