Open Stack

Hi all,



 I’ve run into some unpredictable behavior attaching volumes to instances,
I can mount volumes sometimes, whilst other times status remains
“attaching” and my compute node dies.   Anyone run into this issue?





Environment:


nova01 –  cloud controller  (compute disabled)

 - Ubuntu 12.04 (latest packages) 64bit

·      -  All-in-one OpenStack installation

·      - tgt ISCSI

·      - nova-volume – 3.6TB free

·      - nova.conf can be found: http://paste.openstack.org/show/16022/



nova03  - compute node

·      - Ubuntu 12.04 (latest packages) 64bit

·      - nova-api, nova-network, nova-compute

·      - tgt ISCSI

·      nova.conf can be found here http://paste.openstack.org/show/16021/


Steps:


nova volume-list

+----+--------+--------------+------+-------------+-------------+

| ID | Status | Display Name | Size | Volume Type | Attached to |

+----+--------+--------------+------+-------------+-------------+

+----+--------+--------------+------+-------------+-------------+



nova volume-create --display_name "ext_vol01" 1



nova volume-list

+----+-----------+--------------+------+-------------+-------------+

| ID |   Status  | Display Name | Size | Volume Type | Attached to |

+----+-----------+--------------+------+-------------+-------------+

| 37 | available | ext_vol01    | 1    | None        |             |

+----+-----------+--------------+------+-------------+-------------+



nova volume-attach 5d91ed13-f88f-4ff0-aca4-f1cd3910256f 37 /dev/vdf



nova volume-list

+----+-----------+--------------+------+-------------+-------------+

| ID |   Status  | Display Name | Size | Volume Type | Attached to |

+----+-----------+--------------+------+-------------+-------------+

| 37 | attaching | ext_vol01    | 1    | None        |             |

+----+-----------+--------------+------+-------------+-------------+





At this point the volume status remains “attaching” and the nova03 compute
node has crashed.



nova-compute     nova03                               nova
enabled    XXX   2012-05-07 19:53:30





nova01 nova-volume.log http://paste.openstack.org/show/16016/

nova03 nova-compute.log attached here http://paste.openstack.org/show/16023/





iscsi log:



May  7 16:53:32 nova03 kernel: [174620.293534] scsi14 : iSCSI Initiator
over TCP/IP

May  7 16:53:32 nova03 kernel: [174620.550104] scsi 14:0:0:0: RAID
IET      Controller       0001 PQ: 0 ANSI: 5

May  7 16:53:32 nova03 kernel: [174620.550404] scsi 14:0:0:0: Attached scsi
generic sg3 type 12

May  7 16:53:32 nova03 kernel: [174620.551557] scsi 14:0:0:1: Direct-Access
IET      VIRTUAL-DISK     0001 PQ: 0 ANSI: 5

May  7 16:53:32 nova03 kernel: [174620.551838] sd 14:0:0:1: Attached scsi
generic sg4 type 0

May  7 16:53:32 nova03 kernel: [174620.552938] sd 14:0:0:1: [sdc] 2097152
512-byte logical blocks: (1.07 GB/1.00 GiB)

May  7 16:53:32 nova03 kernel: [174620.553670] sd 14:0:0:1: [sdc] Write
Protect is off

May  7 16:53:32 nova03 kernel: [174620.553674] sd 14:0:0:1: [sdc] Mode
Sense: 49 00 00 08

May  7 16:53:32 nova03 kernel: [174620.554226] sd 14:0:0:1: [sdc] Write
cache: enabled, read cache: enabled, doesn't support DPO or FUA

May  7 16:53:32 nova03 kernel: [174620.573890]  sdc: unknown partition table

May  7 16:53:32 nova03 kernel: [174620.576741] sd 14:0:0:1: [sdc] Attached
SCSI disk

May  7 16:53:33 nova03 iscsid: connection6:0 is operational now



iscsiadm -m session -P 1

Target: iqn.2010-10.org.openstack:volume-00000025

            Current Portal: XXX.XXX.XXX.XXX:3260,1

            Persistent Portal: XXX.XXX.XXX.XX:3260,1

                        **********

                        Interface:

                        **********

                        Iface Name: default

                        Iface Transport: tcp

                        Iface Initiatorname:
iqn.1993-08.org.debian:01:60b3be5e19c

                        Iface IPaddress: 200.143.189.12

                        Iface HWaddress: (null)

                        Iface Netdev: (null)

                        SID: 6

                        iSCSI Connection State: LOGGED IN

                        iSCSI Session State: LOGGED_IN

                        Internal iscsid Session State: NO CHANGE






Cheers,

-- 
_rob
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