** Also affects: python-os-brick (Ubuntu)
Importance: Undecided
Status: New
** Also affects: python-os-brick (Ubuntu Xenial)
Importance: Undecided
Status: New
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1623700
Title:
[SRU] multipath iscsi does not logout of sessions on xenial
Status in os-brick:
Fix Released
Status in python-os-brick package in Ubuntu:
Invalid
Status in python-os-brick source package in Xenial:
New
Bug description:
[Impact]
* The reload (multipath -r) in _rescan_multipath can cause
/dev/mapper/<wwid> to be deleted and re-created (bug #1621340 is used
to track this problem), it would cause a lot more downstream openstack
issues. For example, and right in between that, os.stat(mdev) called
by _discover_mpath_device() will fail to find the file. For example,
when detaching a volume the iscsi sessions are not logged out. This
leaves behind a mpath device and the iscsi /dev/disk/by-path devices
as broken luns. So we should stop calling multipath -r when
attaching/detaching iSCSI volumes, multipath will load devices on its
own.
[Test Case]
* Enable iSCSI driver and cinder/nova multipath
* Detach a iSCSI volume
* Check that devices/symlinks do not get messed up mentioned below
[Regression Potential]
* None
stack@xenial-devstack-master-master-20160914-092014:~$ nova volume-attach
6e1017a7-6dea-418f-ad9b-879da085bd13 d1d68e04-a217-44ea-bb74-65e0de73e5f8
+----------+--------------------------------------+
| Property | Value |
+----------+--------------------------------------+
| device | /dev/vdb |
| id | d1d68e04-a217-44ea-bb74-65e0de73e5f8 |
| serverId | 6e1017a7-6dea-418f-ad9b-879da085bd13 |
| volumeId | d1d68e04-a217-44ea-bb74-65e0de73e5f8 |
+----------+--------------------------------------+
stack@xenial-devstack-master-master-20160914-092014:~$ cinder list
+--------------------------------------+--------+------+------+-------------+----------+--------------------------------------+
| ID | Status | Name | Size | Volume Type |
Bootable | Attached to |
+--------------------------------------+--------+------+------+-------------+----------+--------------------------------------+
| d1d68e04-a217-44ea-bb74-65e0de73e5f8 | in-use | - | 1 | pure-iscsi |
false | 6e1017a7-6dea-418f-ad9b-879da085bd13 |
+--------------------------------------+--------+------+------+-------------+----------+--------------------------------------+
stack@xenial-devstack-master-master-20160914-092014:~$ nova list
+--------------------------------------+------+--------+------------+-------------+---------------------------------+
| ID | Name | Status | Task State | Power
State | Networks |
+--------------------------------------+------+--------+------------+-------------+---------------------------------+
| 6e1017a7-6dea-418f-ad9b-879da085bd13 | test | ACTIVE | - | Running
| public=172.24.4.12, 2001:db8::b |
+--------------------------------------+------+--------+------------+-------------+---------------------------------+
stack@xenial-devstack-master-master-20160914-092014:~$ sudo iscsiadm -m
session
tcp: [5] 10.0.1.10:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [6] 10.0.5.10:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [7] 10.0.1.11:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [8] 10.0.5.11:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
stack@xenial-devstack-master-master-20160914-092014:~$ sudo iscsiadm -m node
10.0.1.11:3260,-1 iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873
10.0.5.11:3260,-1 iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873
10.0.5.10:3260,-1 iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873
10.0.1.10:3260,-1 iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873
stack@xenial-devstack-master-master-20160914-092014:~$ sudo tail -f
/var/log/syslog
Sep 14 22:33:14 xenial-qemu-tester multipath: dm-0: failed to get udev uid:
Invalid argument
Sep 14 22:33:14 xenial-qemu-tester multipath: dm-0: failed to get sysfs uid:
Invalid argument
Sep 14 22:33:14 xenial-qemu-tester multipath: dm-0: failed to get sgio uid:
No such file or directory
Sep 14 22:33:14 xenial-qemu-tester systemd[1347]:
dev-disk-by\x2did-scsi\x2d3624a93709a738ed78583fd12003fb774.device: Dev
dev-disk-by\x2did-scsi\x2d3624a93709a738ed78583fd12003fb774.device appeared
twice with different sysfs paths
/sys/devices/platform/host6/session5/target6:0:0/6:0:0:1/block/sda and
/sys/devices/virtual/block/dm-0
Sep 14 22:33:14 xenial-qemu-tester systemd[1347]:
dev-disk-by\x2did-wwn\x2d0x624a93709a738ed78583fd12003fb774.device: Dev
dev-disk-by\x2did-wwn\x2d0x624a93709a738ed78583fd12003fb774.device appeared
twice with different sysfs paths
/sys/devices/platform/host6/session5/target6:0:0/6:0:0:1/block/sda and
/sys/devices/virtual/block/dm-0
Sep 14 22:33:14 xenial-qemu-tester systemd[1]:
dev-disk-by\x2did-scsi\x2d3624a93709a738ed78583fd12003fb774.device: Dev
dev-disk-by\x2did-scsi\x2d3624a93709a738ed78583fd12003fb774.device appeared
twice with different sysfs paths
/sys/devices/platform/host6/session5/target6:0:0/6:0:0:1/block/sda and
/sys/devices/virtual/block/dm-0
Sep 14 22:33:14 xenial-qemu-tester systemd[1]:
dev-disk-by\x2did-wwn\x2d0x624a93709a738ed78583fd12003fb774.device: Dev
dev-disk-by\x2did-wwn\x2d0x624a93709a738ed78583fd12003fb774.device appeared
twice with different sysfs paths
/sys/devices/platform/host6/session5/target6:0:0/6:0:0:1/block/sda and
/sys/devices/virtual/block/dm-0
Sep 14 22:33:14 xenial-qemu-tester kernel: [22362.163521] audit: type=1400
audit(1473892394.556:21): apparmor="STATUS" operation="profile_replace"
profile="unconfined" name="libvirt-6e1017a7-6dea-418f-ad9b-879da085bd13"
pid=32665 comm="apparmor_parser"
Sep 14 22:33:14 xenial-qemu-tester kernel: [22362.173614] audit: type=1400
audit(1473892394.568:22): apparmor="STATUS" operation="profile_replace"
profile="unconfined"
name="libvirt-6e1017a7-6dea-418f-ad9b-879da085bd13//qemu_bridge_helper"
pid=32665 comm="apparmor_parser"
Sep 14 22:33:14 xenial-qemu-tester iscsid: Connection8:0 to [target:
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873, portal:
10.0.5.11,3260] through [iface: default] is operational now
stack@xenial-devstack-master-master-20160914-092014:~$ nova volume-detach
6e1017a7-6dea-418f-ad9b-879da085bd13 d1d68e04-a217-44ea-bb74-65e0de73e5f8
stack@xenial-devstack-master-master-20160914-092014:~$ sudo iscsiadm -m
session
tcp: [5] 10.0.1.10:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [6] 10.0.5.10:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [7] 10.0.1.11:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [8] 10.0.5.11:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
stack@xenial-devstack-master-master-20160914-092014:~$ cinder list
+--------------------------------------+-----------+------+------+-------------+----------+-------------+
| ID | Status | Name | Size | Volume
Type | Bootable | Attached to |
+--------------------------------------+-----------+------+------+-------------+----------+-------------+
| d1d68e04-a217-44ea-bb74-65e0de73e5f8 | available | - | 1 | pure-iscsi
| false | |
+--------------------------------------+-----------+------+------+-------------+----------+-------------+
stack@xenial-devstack-master-master-20160914-092014:~$ iscsiadm -m session
tcp: [5] 10.0.1.10:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [6] 10.0.5.10:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [7] 10.0.1.11:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
tcp: [8] 10.0.5.11:3260,1
iqn.2010-06.com.purestorage:flasharray.3adbe40b49bac873 (non-flash)
stack@xenial-devstack-master-master-20160914-092014:~$ sudo tail -f
/var/log/syslog
Sep 14 22:48:10 xenial-qemu-tester kernel: [23257.736455] connection6:0:
detected conn error (1020)
Sep 14 22:48:13 xenial-qemu-tester kernel: [23260.742036] connection5:0:
detected conn error (1020)
Sep 14 22:48:13 xenial-qemu-tester kernel: [23260.742066] connection7:0:
detected conn error (1020)
Sep 14 22:48:13 xenial-qemu-tester kernel: [23260.742139] connection8:0:
detected conn error (1020)
Sep 14 22:48:13 xenial-qemu-tester kernel: [23260.742156] connection6:0:
detected conn error (1020)
Sep 14 22:48:16 xenial-qemu-tester kernel: [23263.747638] connection5:0:
detected conn error (1020)
Sep 14 22:48:16 xenial-qemu-tester kernel: [23263.747666] connection7:0:
detected conn error (1020)
Sep 14 22:48:16 xenial-qemu-tester kernel: [23263.747710] connection8:0:
detected conn error (1020)
Sep 14 22:48:16 xenial-qemu-tester kernel: [23263.747737] connection6:0:
detected conn error (1020)
Sep 14 22:48:16 xenial-qemu-tester iscsid: message repeated 67 times: [ conn
0 login rejected: initiator failed authorization with target]
Sep 14 22:48:19 xenial-qemu-tester kernel: [23266.753999] connection6:0:
detected conn error (1020)
Sep 14 22:48:19 xenial-qemu-tester kernel: [23266.754019] connection8:0:
detected conn error (1020)
Sep 14 22:48:19 xenial-qemu-tester kernel: [23266.754105] connection5:0:
detected conn error (1020)
Sep 14 22:48:19 xenial-qemu-tester kernel: [23266.754146] connection7:0:
detected conn error (1020)
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