Bug 2001024

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.

Karl,  this is a public requirement. not dell specific.   thinking about RHCS support scsi_fence mechanism which depending on storage vender supporting scsi reservation standards. now nvme-F is more and more popular and dell storage already support nvme reservation standard too. so we ask if rhel has a plan support to support nvme_fence  agent.

The nvme replacement for sg3_utils with is the nvme-cli utility.  This utility is fully supported by RHEL.

 [root@rhel-storage-105 ~]# rpm -qi nvme-cli
 Name        : nvme-cli
 Version     : 2.4
 Release     : 1.el9
 Architecture: x86_64
 Install Date: Tue 18 Apr 2023 05:40:34 PM EDT
 Group       : Unspecified
 Size        : 4982802
 License     : GPLv2+
 Signature   : RSA/SHA256, Wed 12 Apr 2023 03:55:03 AM EDT, Key ID 199e2f91fd431d51
 Source RPM  : nvme-cli-2.4-1.el9.src.rpm
 Build Date  : Thu 06 Apr 2023 06:25:43 AM EDT
 Build Host  : x86-64-06.build.eng.rdu2.redhat.com
 Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
 Vendor      : Red Hat, Inc.
 URL         : https://github.com/linux-nvme/nvme-cli
 Summary     : NVMe management command line interface
 Description :
 nvme-cli provides NVM-Express user space tooling for Linux.

So, instead of using the `sg_persist` command you would use the `nvme` command to manage reservations on the nvme device.

  resv-acquire                 Submit a Reservation Acquire, return results
  resv-register                Submit a Reservation Register, return results
  resv-release                 Submit a Reservation Release, return results
  resv-report                  Submit a Reservation Report, return results

This means:

 sg_persist --out --register --param-rk=123456 /dev/sdb

becomes:

 nvme resv-register /dev/nvme1n1 --rrega=0 --nrkey=123456 --iekey

Example:

[root@rhel-storage-105 ~]# nvme resv-register /dev/nvme1n1 --rrega=0 --nrkey=123456 --iekey
NVME Reservation  success
[root@rhel-storage-105 ~]# nvme resv-report /dev/nvme1n1

NVME Reservation status:

gen       : 1
rtype     : 0
regctl    : 1
ptpls     : 1
regctl[0] :
  cntlid  : 1
  rcsts   : 0
  hostid  : 0
  rkey    : 1e240

yes, the nvme-cli utility is supported by RHEL.  RHCS supply scsi_fence agent for cluster fencing. it only serve for scsi3 reservation.  there don't have a agent used for nvme reservation. there need a similar agent for nvme reservation

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