Failed to connect to LUN : SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:LOGICAL_UNIT_NOT_SUPPORTED(0x2500)

[yangni2017]

hi，i have a storage with many lun, when i login host, but when i attach lun to vm,the libiscsi get error.

query the storage info when login host:

Target: iqn.2006-08.com.huawei:oceanstor:2100e48326e7ddd6::1022003:10.30.16.17 (non-flash)
        Current Portal: 10.30.16.17:3260,8206
        Persistent Portal: 10.30.16.17:3260,8206
                **********
                Interface:
                **********
                Iface Name: default
                Iface Transport: tcp
                Iface Initiatorname: iqn.2012-01.com.topos3:f0a6cfac63e7
                Iface IPaddress: 10.30.16.23
                Iface HWaddress: default
                Iface Netdev: default
                SID: 1
                iSCSI Connection State: LOGGED IN
                iSCSI Session State: LOGGED_IN
                Internal iscsid Session State: NO CHANGE
                *********
                Timeouts:
                *********
                Recovery Timeout: 120
                Target Reset Timeout: 30
                LUN Reset Timeout: 30
                Abort Timeout: 15
                *****
                CHAP:
                *****
                username: <empty>
                password: ********
                username_in: <empty>
                password_in: ********
                ************************
                Negotiated iSCSI params:
                ************************
                HeaderDigest: None
                DataDigest: None
                MaxRecvDataSegmentLength: 262144
                MaxXmitDataSegmentLength: 262144
                FirstBurstLength: 4096
                MaxBurstLength: 262144
                ImmediateData: Yes
                InitialR2T: Yes
                MaxOutstandingR2T: 1
                ************************
                Attached SCSI devices:
                ************************
                Host Number: 16 State: running
                scsi16 Channel 00 Id 0 Lun: 1
                        Attached scsi disk sde          State: running
                scsi16 Channel 00 Id 0 Lun: 10
                        Attached scsi disk sdn          State: running
                scsi16 Channel 00 Id 0 Lun: 11
                        Attached scsi disk sdo          State: running
                scsi16 Channel 00 Id 0 Lun: 12
                        Attached scsi disk sdp          State: running
                scsi16 Channel 00 Id 0 Lun: 13
                        Attached scsi disk sdq          State: running
                scsi16 Channel 00 Id 0 Lun: 14
                        Attached scsi disk sdr          State: running
                scsi16 Channel 00 Id 0 Lun: 15
                        Attached scsi disk sds          State: running
                scsi16 Channel 00 Id 0 Lun: 16
                        Attached scsi disk sdt          State: running
                scsi16 Channel 00 Id 0 Lun: 17
                        Attached scsi disk sdu          State: running
                scsi16 Channel 00 Id 0 Lun: 18
                        Attached scsi disk sdv          State: running
                scsi16 Channel 00 Id 0 Lun: 19
                        Attached scsi disk sdw          State: running
                scsi16 Channel 00 Id 0 Lun: 2
                        Attached scsi disk sdf          State: running
                scsi16 Channel 00 Id 0 Lun: 20
                        Attached scsi disk sdx          State: running
                scsi16 Channel 00 Id 0 Lun: 21
                        Attached scsi disk sdy          State: running
                scsi16 Channel 00 Id 0 Lun: 22
                        Attached scsi disk sdz          State: running
                scsi16 Channel 00 Id 0 Lun: 23
                        Attached scsi disk sdaa         State: running
                scsi16 Channel 00 Id 0 Lun: 24
                        Attached scsi disk sdab         State: running
                scsi16 Channel 00 Id 0 Lun: 25
                        Attached scsi disk sdac         State: running
                scsi16 Channel 00 Id 0 Lun: 26
                        Attached scsi disk sdad         State: running
                scsi16 Channel 00 Id 0 Lun: 27
                        Attached scsi disk sdae         State: running
                scsi16 Channel 00 Id 0 Lun: 28
                        Attached scsi disk sdaf         State: running
                scsi16 Channel 00 Id 0 Lun: 29
                        Attached scsi disk sdag         State: running
                scsi16 Channel 00 Id 0 Lun: 3
                        Attached scsi disk sdg          State: running
                scsi16 Channel 00 Id 0 Lun: 30
                        Attached scsi disk sdah         State: running
                scsi16 Channel 00 Id 0 Lun: 31
                        Attached scsi disk sdai         State: running
                scsi16 Channel 00 Id 0 Lun: 32
                        Attached scsi disk sdaj         State: running
                scsi16 Channel 00 Id 0 Lun: 33
                        Attached scsi disk sdak         State: running
                scsi16 Channel 00 Id 0 Lun: 34
                        Attached scsi disk sdal         State: running
                scsi16 Channel 00 Id 0 Lun: 35
                        Attached scsi disk sdam         State: running
                scsi16 Channel 00 Id 0 Lun: 36
                        Attached scsi disk sdan         State: running
                scsi16 Channel 00 Id 0 Lun: 37
                        Attached scsi disk sdao         State: running
                scsi16 Channel 00 Id 0 Lun: 38
                        Attached scsi disk sdap         State: running
                scsi16 Channel 00 Id 0 Lun: 39
                        Attached scsi disk sdaq         State: running
                scsi16 Channel 00 Id 0 Lun: 4
                        Attached scsi disk sdh          State: running
                scsi16 Channel 00 Id 0 Lun: 40
                        Attached scsi disk sdar         State: running
                scsi16 Channel 00 Id 0 Lun: 41

but when i attach to vm,the libiscsi get the error:

ERROR libiscsi SENSE KEY:ILLEGAL_REQUEST(5) ASCQ:LOGICAL_UNIT_NOT_SUPPORTED(0x2500) [iqn.2006-08.com.huawei:oceanstor:2100e48326e7ddd6::1022003:10.30.16.17:10.30.16.17:3260]

my xml info:

<disk type="network" device="disk">
  <driver io="threads" queues="0"></driver>
  <source protocol="iscsi" name="iqn.2006-08.com.huawei:oceanstor:2100e48326e7ddd6::1022003:10.30.16.17/40">
    <host name="10.30.16.17" port="3260"></host>
  </source>
  <target dev="sdb" bus="scsi"></target>
  <iotune></iotune>
  <boot order="4"></boot>
</disk>