Mike,
I found the issue and fixed. The culprit is Jumbo Frames. I removed
the MTU=9000 from ifcfg-eth1 file and restarted the target and client.
Now CLinet could connect to luns and showing all block devices in /dev/
sd* format.
Thanks for your help.

Chava


On Jan 29, 1:27 pm, Mike Christie <micha...@cs.wisc.edu> wrote:
> [ietd.conf2K ]# Example iscsi target configuration
> #
> # Everything until the first target definition belongs
> # to the global configuration.
> # Right now this is only the user configuration used
> # during discovery sessions. "IncomingUser" specifies credentials the
> # initiator has to provide - several of these are supported. If mutual
> # CHAP shall be employed, "OutgoingUser" specifies the user/pass
> # combination the target will provide - only one is supported.
> # Leave them alone (keep them commented out) if you don't want to use
> # authentication for discovery sessions.
>
> #iSNSServer 192.168.1.16
> #iSNSAccessControl No
>
> #IncomingUser joe secret
> #OutgoingUser jack 12charsecret
>
> # Targets definitions start with "Target" and the target name.
> # The target name must be a globally unique name, the iSCSI
> # standard defines the "iSCSI Qualified Name" as follows:
> #
> # iqn.yyyy-mm.<reversed domain name>[:identifier]
> #
> # "yyyy-mm" is the date at which the domain is valid and the identifier
> # is freely selectable. For further details please check the iSCSI spec.
>
> Target iqn.2001-04.com.example:storage.disk2.sys1.xyz
>         # Users, who can access this target. The same rules as for discovery
>         # users apply here.
>         # Leave them alone if you don't want to use authentication.
>         #IncomingUser joe secret
>         #OutgoingUser jim 12charpasswd
>         # Logical Unit definition
>         # You must define one logical unit at least.
>         # Block devices, regular files, LVM, and RAID can be offered
>         # to the initiators as a block device.
>         Lun 0 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 1 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 2 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 3 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 4 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 5 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 6 Type=fileio,Type=nullio,Sectors=10485760
>         Lun 7 Type=fileio,Type=nullio,Sectors=10485760
>
>         # Alias name for this target
>         # Alias Test
>         # various iSCSI parameters
>         # (not all are used right now, see also iSCSI spec for details)
>         #MaxConnections         1
>         #InitialR2T             Yes
>         #ImmediateData          No
>         #MaxRecvDataSegmentLength 8192
>         #MaxXmitDataSegmentLength 8192
>         #MaxBurstLength         262144
>         #FirstBurstLength       65536
>         #DefaultTime2Wait       2
>         #DefaultTime2Retain     20
>         #MaxOutstandingR2T      8
>         #DataPDUInOrder         Yes
>         #DataSequenceInOrder    Yes
>         #ErrorRecoveryLevel     0
>         #HeaderDigest           CRC32C,None
>         #DataDigest             CRC32C,None
>         # various target parameters
>         #Wthreads               8
>
> chava45 wrote:
> > Mike ,
> > What else could be the reason for it?
> > it became showstopper.
>
> What is the error you get now? Could you send the logs?
>
> If you see this:
>  >ping timeout of 5 secs expired
>
> then you do not have nops off.
>
> Could you also do a quick test with iet (it is the target used in open
> filer I think):http://iscsitarget.sourceforge.net/
>
> I attached a ietd.conf that will export some virtual luns. Just install
> iet from the tarball, then copy the ietd.conf to /etc.
>
> Then do "service iscsi-target start", and try to login again.
>
>
>
> > thanks
> > Chava
> > On Jan 28, 12:35 pm, Mike Christie <micha...@cs.wisc.edu> wrote:
> >> chava45 wrote:
> >>> Mike ,
> >>> Can you also let me know if there is any workaround on this issue?
> >> Yeah, if this is the bug I thought I fixed then you can just turn off
> >> nops. Are you using dm-multipath? They are mostly useful for fast
> >> failovers when using multipath.
>
> >> You can turn them off by setting
>
> >> node.conn[0].timeo.noop_out_interval = 0
> >> node.conn[0].timeo.noop_out_timeout = 0
>
> >> in /etc/iscsi/iscsid.conf, then redoing the discovery command (iscsiadm
> >> -m discovery -t st -p ip).
>
> >> Or you can set this for already setup nodes by doing
>
> >> iscsiadm -m node -o update -n node.conn[0].timeo.noop_out_interval -v 0
> >> iscsiadm -m node -o update -n node.conn[0].timeo.noop_out_timeout -v 0
>
> >> (note if you do this you still want to set it in iscsid.conf so new
> >> targets that are discovered will get the new setting).
>
> >>> On Jan 28, 10:42 am, chava45 <ssch...@gmail.com> wrote:
> >>>> Mike ,
> >>>> In response to the following update by you...
> >>>> ---------------------------------------------------------------------------
> >>>> Either you are hitting the bug I thought I fixed or these nops are
> >>>> really timing out. I am downloading open filer now to test it out
> >>>> here.
> >>>> ---------------------------------------------------------------------------­­­---------------
> >>>> Could you let me know once you test it? I am stuck up here and can not
> >>>> move forward with Oracle RAC installation on Oracle VM.
> >>>> Thanks
> >>>> Chava
> >>>> On Jan 28, 9:35 am, Mike Christie <micha...@cs.wisc.edu> wrote:
> >>>>> chava45wrote:
> >>>>>> Mike,
> >>>>>> Here is the log information from /var/log/messages.
> >>>>>> ---------------------------------------------------------------------------­­­­-----------------------------------------------------
> >>>>>> Jan 27 14:02:04 rac1 iscsid: iSCSI logger with pid=4380 started!
> >>>>>> Jan 27 14:02:05 rac1 iscsid: transport class version 2.0-724. iscsid
> >>>>>> version 2.0-868
> >>>>>> Jan 27 14:02:05 rac1 iscsid: iSCSI daemon with pid=4381 started!
> >>>>>> Jan 27 14:03:02 rac1 kernel: scsi1 : iSCSI Initiator over TCP/IP
> >>>>>> Jan 27 14:03:03 rac1 kernel:   Vendor: OPNFILER  Model: VIRTUAL-
> >>>>>> DISK      Rev: 0
> >>>>>> Jan 27 14:03:03 rac1 kernel:   Type:   Direct-
> >>>>>> Access                      ANSI SCSI revision: 04
> >>>>>> Jan 27 14:03:03 rac1 kernel: SCSI device sda: 1048576 512-byte hdwr
> >>>>>> sectors (537 MB)
> >>>>>> Jan 27 14:03:03 rac1 kernel: sda: Write Protect is off
> >>>>>> Jan 27 14:03:03 rac1 kernel: SCSI device sda: drive cache: write
> >>>>>> through
> >>>>>> Jan 27 14:03:03 rac1 kernel: SCSI device sda: 1048576 512-byte hdwr
> >>>>>> sectors (537 MB)
> >>>>>> Jan 27 14:03:03 rac1 kernel: sda: Write Protect is off
> >>>>>> Jan 27 14:03:03 rac1 kernel: SCSI device sda: drive cache: write
> >>>>>> through
> >>>>>> Jan 27 14:03:03 rac1 iscsid: received iferror -38
> >>>>>> Jan 27 14:03:03 rac1 last message repeated 2 times
> >>>>>> Jan 27 14:03:03 rac1 iscsid: connection2:0 is operational now
> >>>>>> Jan 27 14:03:06 rac1 udevd-event[4401]: wait_for_sysfs: waiting for '/
> >>>>>> sys/devices/platform/host1/session2/target1:0:0/1:0:0:0/ioerr_cnt'
> >>>>>> failed
> >>>>>> Jan 27 14:03:13 rac1 kernel:  sda:<3>ping timeout of 5 secs expired,
> >>>>>> last rx 47558, last ping 48808, now 50058
> >>>>> Either you are hitting the bug I thought I fixed or these nops are
> >>>>> really timing out. I am downloading open filer now to test it out 
> >>>>> here.- Hide quoted text -
> >>>>> - Show quoted text -- Hide quoted text -
> >>>> - Show quoted text -- Hide quoted text -
> >> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -
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