I've been playing with stgt in a cluster of VMs and have run across one
issue. Whenever the target is mounted on a client and I kill the VM
running tgtd, when the box comes back up the LUN is missing. The target
is still there, just the LUN is gone. If I re-add it everything works
fine, but I would like to know why I have to do this.
Additionally the target server has 2 targets, and both of them are in
active sessions on a client, but its only the target that is actually
mounted at the time that is missing after reboot.
Before simulated crash
---------------------------
Target 1: iqn.165.212.101.240:nas03.sdb1
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 2
Initiator: iqn.1994-05.com.redhat:fce94bd7cd86
Connection: 0
IP Address: 165.212.101.241
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: None
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 268 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: /dev/sdb1
Account information:
ACL information:
ALL
Target 2: iqn.165.212.101.240:nas03.sdb2
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 1
Initiator: iqn.1994-05.com.redhat:fce94bd7cd86
Connection: 0
IP Address: 165.212.101.241
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00020000
SCSI SN: beaf20
Size: 0 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: None
LUN: 1
Type: disk
SCSI ID: IET 00020001
SCSI SN: beaf21
Size: 268 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: /dev/sdb2
Account information:
ACL information:
ALL
After the box comes back up
----------------------------------
Target 1: iqn.165.212.101.240:nas03.sdb1
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 1
Initiator: iqn.1994-05.com.redhat:fce94bd7cd86
Connection: 0
IP Address: 165.212.101.241
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: None
Account information:
ACL information:
ALL
Target 2: iqn.165.212.101.240:nas03.sdb2
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 2
Initiator: iqn.1994-05.com.redhat:fce94bd7cd86
Connection: 0
IP Address: 165.212.101.241
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00020000
SCSI SN: beaf20
Size: 0 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: None
LUN: 1
Type: disk
SCSI ID: IET 00020001
SCSI SN: beaf21
Size: 268 MB
Online: Yes
Removable media: No
Backing store type: rdwr
Backing store path: /dev/sdb2
Account information:
ACL information:
ALL
-------------------
Notice that Target 1 - LUN 1 is gone
`tgtadm --mode logicalunit --op new --tid 1 --lun 1 -b /dev/sdb1` will
add it back and it works fine
My targets.conf
--------------------
default-driver iscsi
iSNSServerIP 165.212.101.243
<target iqn.165.212.101.240:nas03.sdb2>
backing-store /dev/sdb2
</target>
<target iqn.165.212.101.240:nas03.sdb1>
backing-store /dev/sdb1
</target>
--------------------
Running:
rhel6 2.6.32-71
scsi-target-utils 1.0.4-3
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