Mike,
I am sure this used to work, and quite sure you made some comments on the
subject
now, this isn't working and I can't find your comments, anyway:
using the suggested/similar setting for nop timesout as in the read me
multi-pathing section,
taking a port down causes the nop watch-dog to catch the situation
> 14:51:33 cto-1 kernel: sd 4:0:0:1: [sdd] Attached SCSI disk
> 14:51:33 cto-1 kernel: sd 5:0:0:1: [sde] Attached SCSI disk
> 14:51:34 cto-1 iscsid: connection2:0 is operational now
> 14:51:34 cto-1 iscsid: connection3:0 is operational now
> 14:52:19 cto-1 kernel: connection3:0: ping timeout of 10 secs expired, recv
> timeout 5 ...
> 14:52:19 cto-1 kernel: connection3:0: detected conn error (1011)
> 14:52:20 cto-1 iscsid: Kernel reported iSCSI connection 3:0 error (1011)
> state (3)
> 14:52:35 cto-1 kernel: session3: session recovery timed out after 15 secs
and change the session state such that $ iscsiadm -m session/host -P 3 yield
for the failed session/host
> iSCSI Connection State: TRANSPORT WAIT
> iSCSI Session State: FREE
> Internal iscsid Session State: REPOEN
where the session which is associated with the other port of the initiator
which is UP gives
> iSCSI Connection State: LOGGED IN
> iSCSI Session State: LOGGED_IN
> Internal iscsid Session State: NO CHANGE
BUT, for some reason the SCSI host state is still "running" and not "blocked"
even after 30 minutes. I remember this wasn't the case in the not far away
past... am I doing something wrong? don't tell me its RTFM...
I got this behaviour on both RHEL5.4 and 2.6.33 with iscsi/tcp and iser. I just
run this without multipathing around. When multipathing was used (RHEL 5.4) the
multipath driver was aware that the device is done as of the
path checker timeout. see more details on my config in the attach.
Or.
> # iscsiadm -m host
> tcp: [4] 10.10.5.158,[(null)],ib1 (null)
> tcp: [5] 10.10.5.157,[(null)],ib0 (null)
> # cat /sys/bus/scsi/devices/4:0:0:*/state
> running
> running
> # cat /sys/bus/scsi/devices/5:0:0:*/state
> running
> running
$ iscsiadm -m node -T tgt.1.abc
# BEGIN RECORD 2.0-871
node.name = tgt.1.abc
node.tpgt = 1
node.startup = automatic
iface.hwaddress = <empty>
iface.ipaddress = <empty>
iface.iscsi_ifacename = iface1
iface.net_ifacename = ib1
iface.transport_name = tcp
iface.initiatorname = <empty>
node.discovery_address = 10.10.1.91
node.discovery_port = 3260
node.discovery_type = send_targets
node.session.initial_cmdsn = 0
node.session.initial_login_retry_max = 8
node.session.xmit_thread_priority = -20
node.session.cmds_max = 128
node.session.queue_depth = 32
node.session.auth.authmethod = None
node.session.auth.username = <empty>
node.session.auth.password = <empty>
node.session.auth.username_in = <empty>
node.session.auth.password_in = <empty>
node.session.timeo.replacement_timeout = 15
node.session.err_timeo.abort_timeout = 15
node.session.err_timeo.lu_reset_timeout = 20
node.session.err_timeo.host_reset_timeout = 60
node.session.iscsi.FastAbort = Yes
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.session.iscsi.DefaultTime2Retain = 0
node.session.iscsi.DefaultTime2Wait = 2
node.session.iscsi.MaxConnections = 1
node.session.iscsi.MaxOutstandingR2T = 1
node.session.iscsi.ERL = 0
node.conn[0].address = 10.10.1.91
node.conn[0].port = 3260
node.conn[0].startup = manual
node.conn[0].tcp.window_size = 524288
node.conn[0].tcp.type_of_service = 0
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.auth_timeout = 45
node.conn[0].timeo.noop_out_interval = 5
node.conn[0].timeo.noop_out_timeout = 10
node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144
node.conn[0].iscsi.HeaderDigest = None
node.conn[0].iscsi.IFMarker = No
node.conn[0].iscsi.OFMarker = No
# END RECORD
# BEGIN RECORD 2.0-871
node.name = tgt.1.abc
node.tpgt = 1
node.startup = automatic
iface.hwaddress = <empty>
iface.ipaddress = <empty>
iface.iscsi_ifacename = iface0
iface.net_ifacename = ib0
iface.transport_name = tcp
iface.initiatorname = <empty>
node.discovery_address = 10.10.0.91
node.discovery_port = 3260
node.discovery_type = send_targets
node.session.initial_cmdsn = 0
node.session.initial_login_retry_max = 8
node.session.xmit_thread_priority = -20
node.session.cmds_max = 128
node.session.queue_depth = 32
node.session.auth.authmethod = None
node.session.auth.username = <empty>
node.session.auth.password = <empty>
node.session.auth.username_in = <empty>
node.session.auth.password_in = <empty>
node.session.timeo.replacement_timeout = 15
node.session.err_timeo.abort_timeout = 15
node.session.err_timeo.lu_reset_timeout = 20
node.session.err_timeo.host_reset_timeout = 60
node.session.iscsi.FastAbort = Yes
node.session.iscsi.InitialR2T = No
node.session.iscsi.ImmediateData = Yes
node.session.iscsi.FirstBurstLength = 262144
node.session.iscsi.MaxBurstLength = 16776192
node.session.iscsi.DefaultTime2Retain = 0
node.session.iscsi.DefaultTime2Wait = 2
node.session.iscsi.MaxConnections = 1
node.session.iscsi.MaxOutstandingR2T = 1
node.session.iscsi.ERL = 0
node.conn[0].address = 10.10.0.91
node.conn[0].port = 3260
node.conn[0].startup = manual
node.conn[0].tcp.window_size = 524288
node.conn[0].tcp.type_of_service = 0
node.conn[0].timeo.logout_timeout = 15
node.conn[0].timeo.login_timeout = 15
node.conn[0].timeo.auth_timeout = 45
node.conn[0].timeo.noop_out_interval = 5
node.conn[0].timeo.noop_out_timeout = 10
node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144
node.conn[0].iscsi.HeaderDigest = None
node.conn[0].iscsi.IFMarker = No
node.conn[0].iscsi.OFMarker = No
# END RECORD
$ iscsiadm -m session -P 3
iSCSI Transport Class version 2.0-870
version 2.0-871
Target: tgt.1.abc
Current Portal: 10.10.1.91:3260,1
Persistent Portal: 10.10.1.91:3260,1
**********
Interface:
**********
Iface Name: iface1
Iface Transport: tcp
Iface Initiatorname: iqn.1994-05.com.redhat:fe31368f8cc8
Iface IPaddress: 10.10.5.158
Iface HWaddress: (null)
Iface Netdev: ib1
SID: 2
iSCSI Connection State: LOGGED IN
iSCSI Session State: LOGGED_IN
Internal iscsid Session State: NO CHANGE
************************
Negotiated iSCSI params:
************************
HeaderDigest: None
DataDigest: None
MaxRecvDataSegmentLength: 262144
MaxXmitDataSegmentLength: 8192
FirstBurstLength: 65536
MaxBurstLength: 262144
ImmediateData: Yes
InitialR2T: Yes
MaxOutstandingR2T: 1
************************
Attached SCSI devices:
************************
Host Number: 4 State: running
scsi4 Channel 00 Id 0 Lun: 0
scsi4 Channel 00 Id 0 Lun: 1
Attached scsi disk sdd State: running
Current Portal: 10.10.0.91:3260,1
Persistent Portal: 10.10.0.91:3260,1
**********
Interface:
**********
Iface Name: iface0
Iface Transport: tcp
Iface Initiatorname: iqn.1994-05.com.redhat:fe31368f8cc8
Iface IPaddress: 10.10.5.157
Iface HWaddress: (null)
Iface Netdev: ib0
SID: 3
iSCSI Connection State: TRANSPORT WAIT
iSCSI Session State: FREE
Internal iscsid Session State: REPOEN
************************
Negotiated iSCSI params:
************************
HeaderDigest: None
DataDigest: None
MaxRecvDataSegmentLength: 262144
MaxXmitDataSegmentLength: 8192
FirstBurstLength: 65536
MaxBurstLength: 262144
ImmediateData: Yes
InitialR2T: Yes
MaxOutstandingR2T: 1
************************
Attached SCSI devices:
************************
Host Number: 5 State: running
scsi5 Channel 00 Id 0 Lun: 0
scsi5 Channel 00 Id 0 Lun: 1
Attached scsi disk sde State: running
$ iscsiadm -m iface
default tcp,<empty>,<empty>,<empty>,<empty>
iser iser,<empty>,<empty>,<empty>,<empty>
iface1 tcp,<empty>,<empty>,ib1,<empty>
iface0 tcp,<empty>,<empty>,ib0,<empty>
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