7 Replies Latest reply on Apr 30, 2017 5:49 PM by drolfe

    How to disconnected from SRP Target

    drolfe

      Hi,

       

      I'd like to know the correct way to disconnect from an SRP target

       

      Sure I unmount the drive but fdisk still shows the block device.

       

      How do I make it go away without having to reboot my centos client (initiator)  OS  ?

       

      Also for the target to not see the SRP session any more (Solaris 11 currently)

       

      Regards, Daniel

        • Re: How to disconnected from SRP Target
          sophie

          Hi Mark,

           

          Are you using Solaris 11 on the initiator and target?

          If so, you might want to redirect this question to Oracle as we do not provide Mellanox OFED Driver for Solaris OS.

           

          Regards,

          Sophie.

            • Re: How to disconnected from SRP Target
              drolfe

              Solaris 11 is the target

               

              Client's / initiators are both Centos 7.3

               

              One with MLNX_OFED_LINUX-3.2-2.0.0.0 the other with MLNX_OFED_LINUX-4.0-2.0.0.1

               

              Just looking for a clean way to disconnect the block device without rebooting the host ?

                • Re: How to disconnected from SRP Target
                  sophie

                  Hi Daniel,

                   

                  Did you hand edit the /etc/srp_daemon.conf file  and remove the id of the device follow by an "/etc/init.d/srptools restart"?

                   

                  Regards,

                  Sophie.

                    • Re: How to disconnected from SRP Target
                      sophie

                      IE:

                      Determine the IDs of presented devices

                      You can determine the IDs of SRP devices presented to your hosts by running the ibsrpdm -c command.

                      # ibsrpdm -c id_ext=50001ff10005052a,ioc_guid=50001ff10005052a,dgid=fe8000000000000050001ff10005052a,pkey=ffff,service_id=2a050500f11f0050
                      • Re: How to disconnected from SRP Target
                        drolfe

                        HI, I've given this a try

                         

                        I've removed the allow statement from srp config

                         

                        Restarted the service but I still see the disk

                         

                        Before the restart:

                        [   83.910375] sd 1:0:0:0: [sdb] 1258291200 512-byte logical blocks: (644 GB/600 GiB)
                        [   83.910410] scsi host1: ib_srp: new target: id_ext 0010e000XXXXXXXX ioc_guid 0010e0000XXXXXXXX pkey ffff
                        service_id 0010e0000XXXXXXXX sgid fe80:0000:0000:0000:0002:c903:0055:e715 dgid fe80:0000:0000:0000:0010:e000
                        :0133:8762
                        [   83.911922] sd 1:0:0:0: [sdb] Write Protect is off
                        [   83.911928] sd 1:0:0:0: [sdb] Mode Sense: 53 00 00 00
                        [   83.912454] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
                        [   83.922401]  sdb: unknown partition table
                        [   83.926762] sd 1:0:0:0: [sdb] Attached SCSI disk
                        

                         

                        After the restart the system still thinks it's connected:

                        [root@Client ~]# fdisk -l /dev/sdb
                        
                        
                        Disk /dev/sdb: 644.2 GB, 644245094400 bytes, 1258291200 sectors
                        Units = sectors of 1 * 512 = 512 bytes
                        Sector size (logical/physical): 512 bytes / 512 bytes
                        I/O size (minimum/optimal): 8192 bytes / 8192 bytes
                        

                         

                        Any other way to do the disconnection

                  • Re: How to disconnected from SRP Target
                    inbusiness

                    Hi!

                    Originally SRP protocol doesn't designed disconnection.

                     

                    Especially Solaris SRP target is don't know what host disconnect from it and reboot or shutdown.

                     

                    I used ESXi host with Solaris SRP target several years.

                     

                    When ESXi host reboot SRP initiator re-connection delay occurred because target don't know that ESXi was reboot.