Device attached over iSCSI not found at /dev/disk/by-path

Device attached over iscsi not found at /dev/disk/by-path.

The iscsiadm also shows that there are devices without attached disk:

sudo iscsiadm -m session -P 3
iSCSI Transport Class version 2.0-870
version 2.0-873
Target: iqn.2000-08.com.datacore:win2012-2 Current Portal: 172.17.4.48:3260,1 Persistent Portal: 172.17.4.48:3260,1 ********** Interface: ********** Iface Name: default Iface Transport: tcp Iface Initiatorname: iqn.1993-08.org.debian:01:873f6f119c4 Iface IPaddress: 172.17.6.89 Iface HWaddress: <empty> Iface Netdev: <empty> SID: 11 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: 0 MaxBurstLength: 1048576 ImmediateData: No InitialR2T: Yes MaxOutstandingR2T: 1 ************************ Attached SCSI devices: ************************ Host Number: 19 State: running scsi19 Channel 00 Id 0 Lun: 0 Attached scsi disk sdcs State: running scsi19 Channel 00 Id 0 Lun: 1 scsi19 Channel 00 Id 0 Lun: 10 Attached scsi disk sdaw State: running scsi19 Channel 00 Id 0 Lun: 11 Attached scsi disk sdax State: running scsi19 Channel 00 Id 0 Lun: 12 Attached scsi disk sday State: running scsi19 Channel 00 Id 0 Lun: 13 scsi19 Channel 00 Id 0 Lun: 14 Attached scsi disk sdba State: running

See Lun 1 or Lun 13 for example.

Know someone who can answer? Share a link to this question via email, Twitter, or Facebook.