No Kernel panics for iSER Logout at this time (with this patch):
Linux dixie 3.13.11-ckt18-test01 #3 SMP Fri Apr 24 13:46:29 BRT 2015
x86_64 x86_64 x86_64 GNU/Linux
root@dixie:~# iscsiadm -m discovery --op=new --op=del --type sendtargets
--portal 172.16.0.1 -I iser
172.16.0.1:3260,1 iqn.2001-04.com.hertz-lunit1
root@dixie:~# iscsiadm -m node -l
Logging in to [iface: iser, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260] (multiple)
Login to [iface: iser, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260] successful.
root@dixie:~# dd if=/dev/zero of=/dev/sdc bs=1M count=1024 oflag=direct
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 0.996458 s, 1.1 GB/s
root@dixie:~# service open-iscsi stop
* Unmounting iscsi-backed filesystems [ OK ]
* Disconnecting iSCSI targets
Logging out of session [sid: 5, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260]
Logout of [sid: 5, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260] successful.
* Stopping iSCSI initiator service [ OK ]
And then again:
root@dixie:~# iscsiadm -m discovery --op=new --op=del --type sendtargets
--portal 172.16.0.1 -I iser
172.16.0.1:3260,1 iqn.2001-04.com.hertz-lunit1
root@dixie:~# iscsiadm -m node -l
Logging in to [iface: iser, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260] (multiple)
Login to [iface: iser, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260] successful.
root@dixie:~# dd if=/dev/zero of=/dev/sdc bs=1M count=1024 oflag=direct
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 0.844185 s, 1.3 GB/s
root@dixie:~# service open-iscsi stop
* Unmounting iscsi-backed filesystems [ OK ]
* Disconnecting iSCSI targets
Logging out of session [sid: 2, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260]
Logout of [sid: 2, target: iqn.2001-04.com.hertz-lunit1, portal:
172.16.0.1,3260] successful.
* Stopping iSCSI initiator service
No kernel panic again. Will do some stress testing for iSER to make sure
everything is good.
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https://bugs.launchpad.net/bugs/1443648
Title:
Kernel panics on iSER (iscsi over IB) logouts
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