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Re: Connection to Discovery Address failed [EMC AX150SCi on RHEL4]



> I'm getting this error in my event logs almost precisely every 30
> seconds. The iscsi connection fails to the discovery address, and then
> is immediately made again.
> 
> Dec 14 15:48:52 chlorine iscsid[19813]: Connection to Discovery Address
> 192.168.15.2 failed 
> Dec 14 15:48:52 chlorine iscsid[19815]: Connection to Discovery Address
> 192.168.15.3 failed 
> Dec 14 15:48:52 chlorine iscsid[19813]: Connected to Discovery Address
> 192.168.15.2 
> Dec 14 15:48:52 chlorine iscsid[19815]: Connected to Discovery Address
> 192.168.15.3
> 
> Does anyone have any ideas what I can do to remedy this? All RHEL4U4
> hosts that connect to this target exhibit this behavior, while the
> windows hosts do not.

Hello Matthew!

Just wondering if you have found a solution ?

I'm having the exact same problem on a debian sarge box (kernel
2.6.8-3-686-smp, SFNet iSCSI Driver Version ... 4:0.1.10, Dell/EMC
AX150SCi):

Jan  3 00:22:14 rocksteady iscsid[2408]: Connection to Discovery Address
10.10.1.10 failed
Jan  3 00:22:14 rocksteady iscsid[2408]: Connected to Discovery Address
10.10.1.10
Jan  3 00:22:45 rocksteady iscsid[2408]: Connection to Discovery Address
10.10.1.10 failed
Jan  3 00:22:45 rocksteady iscsid[2408]: Connected to Discovery Address
10.10.1.10


I have tried the Continuous=no/yes option and setting the global idle
timeout to something below 30 (20):

iscsi-ls -c:

*******************************************************************************
         SFNet iSCSI Driver Version ... 4:0.1.10 ( 8-Oct-2004)
*******************************************************************************
TARGET NAME             : iqn.1992-04.com.emc:ax.fcnpr062301759.a0
TARGET ALIAS            :
HOST NO                 : 3
TARGET ADDRESS          : 10.10.1.10:3260
SESSION STATUS          : CONNECTION ON 10.10.1.10:3260
                           ESTABLISHED AT Tue Jan  2 23:20:45 2007
NO. OF PORTALS          : 1
PORTAL ADDRESS 1        : 10.10.1.10:3260,1
SESSION ID              : ISID 00023d000001 TSIH a197

TARGET CONFIGURATION KEYS :
-------------------------
INITIAL R2T             : Yes
IMMEDIATE DATA          : No
HEADERDIGEST            : NONE
DATA DIGEST             : NONE
FIRSTBURSTLENGTH        : 0
MAXBURSTLENGTH          : 262144
MAXRECVDATASEGMENTLENGTH: initiator - 131072
                           target    - 65536
LOGIN TIMEOUT           : 15
AUTH TIMEOUT            : 45
ACTIVE TIMEOUT          : 5
IDLE TIMEOUT            : 60
PING TIMEOUT            : 5
*******************************************************************************
TARGET NAME             : iqn.1992-04.com.emc:ax.fcnpr062301759.a1
TARGET ALIAS            :
HOST NO                 : 4
TARGET ADDRESS          : 10.10.2.10:3260
SESSION STATUS          : CONNECTION ON 10.10.2.10:3260
                           ESTABLISHED AT Tue Jan  2 23:20:45 2007
NO. OF PORTALS          : 1
PORTAL ADDRESS 1        : 10.10.2.10:3260,2
SESSION ID              : ISID 00023d000001 TSIH a198

TARGET CONFIGURATION KEYS :
-------------------------
INITIAL R2T             : Yes
IMMEDIATE DATA          : No
HEADERDIGEST            : NONE
DATA DIGEST             : NONE
FIRSTBURSTLENGTH        : 0
MAXBURSTLENGTH          : 262144
MAXRECVDATASEGMENTLENGTH: initiator - 131072
                           target    - 65536
LOGIN TIMEOUT           : 15
AUTH TIMEOUT            : 45
ACTIVE TIMEOUT          : 5
IDLE TIMEOUT            : 20
PING TIMEOUT            : 5
*******************************************************************************


I think it's a bit strange that the first target
(iqn.1992-04.com.emc:ax.fcnpr062301759.a0) seems to ignore the idle
timeout setting.

Anyway, I can access data on the SAN without any problems, it's just
annoying with failed/connected messages filling up the log ;-)

Best regards

Søren


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