can't disconnec iSCSI targets, please help

[SoftDux-Rudi]

Hi,

I'm trying to disconnect some iSCSI targets, but can't seem to.

[root@localhost ~]# iscsiadm -m session
tcp: [1] 192.168.2.202:3260,1 iqn.2011.01.22.freenas.nvr:500gb
tcp: [3] 192.168.2.200:3260,1 iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba
tcp: [4] 192.168.2.202:3260,1 iqn.2011.01.22.freenas.nvr:extent0
tcp: [5] 192.168.2.200:3260,1
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb

I need to disconnect all 4 of these

[root@localhost ~]# iscsiadm -m node -T 192.168.2.200:3260,1
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb -p 196.34.136.200
--logout

The target is still there, even though I tell it to disconnect.

[root@localhost ~]# iscsiadm -m session
tcp: [1] 192.168.2.202:3260,1 iqn.2011.01.22.freenas.nvr:500gb
tcp: [3] 192.168.2.200:3260,1 iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba
tcp: [4] 192.168.2.202:3260,1 iqn.2011.01.22.freenas.nvr:extent0
tcp: [5] 192.168.2.200:3260,1
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb

I can't delete it either:

[root@localhost ~]# iscsiadm -m node --op delete --targetname
192.168.2.202:3260,1 iqn.2011.01.22.freenas.nvr:500gb
iscsiadm: no records found!

Restarting iscsi gives some odd errors:

[root@localhost ~]# /etc/init.d/iscsi restart
Logging out of session [sid: 1, target:
iqn.2011.01.22.freenas.nvr:500gb, portal: 192.168.2.202,3260]
Logging out of session [sid: 3, target:
iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal:
192.168.2.200,3260]
Logging out of session [sid: 4, target:
iqn.2011.01.22.freenas.nvr:extent0, portal: 192.168.2.202,3260]
Logging out of session [sid: 5, target:
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal:
192.168.2.200,3260]
Logout of [sid: 1, target: iqn.2011.01.22.freenas.nvr:500gb, portal:
192.168.2.202,3260]: successful
Logout of [sid: 3, target:
iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal:
192.168.2.200,3260]: successful
Logout of [sid: 4, target: iqn.2011.01.22.freenas.nvr:extent0, portal:
192.168.2.202,3260]: successful
Logout of [sid: 5, target:
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal:
192.168.2.200,3260]: successful
Stopping iSCSI daemon:
iscsid dead but pid file exists [ OK ]
Starting iSCSI daemon: [ OK ]
[ OK ]
Setting up iSCSI targets: Logging in to [iface: default, target:
iqn.2011.01.22.freenas.nvr:500gb, portal: 192.168.2.202,3260]
Logging in to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.thin1.vg0.2tb, portal:
192.168.2.200,3260]
Logging in to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal:
192.168.2.200,3260]
Logging in to [iface: default, target:
iqn.2011.01.22.freenas.nvr:extent0, portal: 192.168.2.202,3260]
Logging in to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal:
192.168.2.200,3260]
Logging in to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.thin2.vg0.1tb, portal:
192.168.2.200,3260]
Login to [iface: default, target: iqn.2011.01.22.freenas.nvr:500gb,
portal: 192.168.2.202,3260]: successful
iscsiadm: Could not login to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.thin1.vg0.2tb, portal:
192.168.2.200,3260]:
iscsiadm: initiator reported error (19 - encountered non-retryable
iSCSI login failure)
Login to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal:
192.168.2.200,3260]: successful
Login to [iface: default, target: iqn.2011.01.22.freenas.nvr:extent0,
portal: 192.168.2.202,3260]: successful
Login to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal:
192.168.2.200,3260]: successful
iscsiadm: Could not login to [iface: default, target:
iqn.2011-2.za.co.securehosting:RAID.thin2.vg0.1tb, portal:
192.168.2.200,3260]:
iscsiadm: initiator reported error (19 - encountered non-retryable
iSCSI login failure)
iscsiadm: Could not log into all portals. Err 19.

Interestingly, the targets which iscsi reports as not existing, does exist:

[root@localhost ~]# iscsiadm -m discovery -t sendtargets -p 192.168.2.200
192.168.2.200:3260,1 iqn.2011-2.za.co.securehosting:RAID.thin1.vg0.2tb
192.168.2.200:3260,1 iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba
192.168.2.200:3260,1 iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb
192.168.2.200:3260,1 iqn.2011-2.za.co.securehosting:RAID.thin2.vg0.1tb

Is there any other way to force these disconnects, and re-connect them?

The machine runs on CentOS 5.5 x64 + XEN:

[root@localhost ~]# cat /etc/redhat-release
CentOS release 5.5 (Final)
[root@localhost ~]# uname -a
Linux localhost.localdomain 2.6.18-194.el5xen #1 SMP Fri Apr 2
15:34:40 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]#

 

[SoftDux-Rudi]

This is driving me nuts! Does anyone know if this is a bug, or am I doing something wrong?

I searched the RHEL bug list, but can't find anything related to this. Some other people (via google search) seems to have simila problems, but I can't see any fixes on the web.

I can logout out of all sessions, but as soon as I restart iscsi, the sessions gets restored again:

[root@localhost ~]# fdisk -l

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes

255 heads, 63 sectors/track, 121601 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sda1 * 1 13 104391 83 Linux

/dev/sda2 14 121584 976519057+ 8e Linux LVM

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes

255 heads, 63 sectors/track, 121601 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sdb1 * 1 13 104391 83 Linux

/dev/sdb2 14 121584 976519057+ 8e Linux LVM

Disk /dev/sdc: 1084.4 GB, 1084480290816 bytes

255 heads, 63 sectors/track, 131847 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdc doesn't contain a valid partition table

Disk /dev/sdd: 539.7 GB, 539771273216 bytes

255 heads, 63 sectors/track, 65623 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sdd1 1 65623 527116716 fd Linux raid autodetect

Disk /dev/sde: 536.8 GB, 536870912000 bytes

255 heads, 63 sectors/track, 65270 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sde doesn't contain a valid partition table

Disk /dev/sdf: 536.8 GB, 536870912000 bytes

255 heads, 63 sectors/track, 65270 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sdf1 1 65270 524281243+ fd Linux raid autodetect

[root@localhost ~]# iscsiadm -m node -u

Logging out of session [sid: 1, target: iqn.2011.01.22.freenas.nvr:500gb, portal: 192.168.2.202,3260]

Logging out of session [sid: 3, target: iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal: 192.168.2.200,3260]

Logging out of session [sid: 4, target: iqn.2011.01.22.freenas.nvr:extent0, portal: 192.168.2.202,3260]

Logging out of session [sid: 5, target: iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal: 192.168.2.200,3260]

Logout of [sid: 1, target: iqn.2011.01.22.freenas.nvr:500gb, portal: 192.168.2.202,3260]: successful

Logout of [sid: 3, target: iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal: 192.168.2.200,3260]: successful

Logout of [sid: 4, target: iqn.2011.01.22.freenas.nvr:extent0, portal: 192.168.2.202,3260]: successful

Logout of [sid: 5, target: iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal: 192.168.2.200,3260]: successful

So, iscsi logs out of the targets, and fdisk -l confirms it:

[root@localhost ~]# fdisk -l

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes

255 heads, 63 sectors/track, 121601 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sda1 * 1 13 104391 83 Linux

/dev/sda2 14 121584 976519057+ 8e Linux LVM

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes

255 heads, 63 sectors/track, 121601 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sdb1 * 1 13 104391 83 Linux

/dev/sdb2 14 121584 976519057+ 8e Linux LVM

But as soon as I restart iscsi, it logs back-in:

[root@localhost ~]# /etc/init.d/iscsi restart

Stopping iSCSI daemon:

iscsid dead but pid file exists [ OK ]

Starting iSCSI daemon: [ OK ]

[ OK ]

Setting up iSCSI targets: Logging in to [iface: default, target: iqn.2011.01.22.freenas.nvr:500gb, portal: 192.168.2.202,3260]

Logging in to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.thin1.vg0.2tb, portal: 192.168.2.200,3260]

Logging in to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal: 192.168.2.200,3260]

Logging in to [iface: default, target: iqn.2011.01.22.freenas.nvr:extent0, portal: 192.168.2.202,3260]

Logging in to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal: 192.168.2.200,3260]

Logging in to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.thin2.vg0.1tb, portal: 192.168.2.200,3260]

Login to [iface: default, target: iqn.2011.01.22.freenas.nvr:500gb, portal: 192.168.2.202,3260]: successful

iscsiadm: Could not login to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.thin1.vg0.2tb, portal: 192.168.2.200,3260]:

iscsiadm: initiator reported error (19 - encountered non-retryable iSCSI login failure)

Login to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.thin3.vg0.1tba, portal: 192.168.2.200,3260]: successful

Login to [iface: default, target: iqn.2011.01.22.freenas.nvr:extent0, portal: 192.168.2.202,3260]: successful

Login to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.iscsi0.vg0.500gb, portal: 192.168.2.200,3260]: successful

iscsiadm: Could not login to [iface: default, target: iqn.2011-2.za.co.securehosting:RAID.thin2.vg0.1tb, portal: 192.168.2.200,3260]:

iscsiadm: initiator reported error (19 - encountered non-retryable iSCSI login failure)

iscsiadm: Could not log into all portals. Err 19.

Why?

Or, how do I completely get rid of them?