Can anyone tell me why the SCSI layer says the device is not ready
when iscsiadm reports it is logged in?
Can I manually online the device? How should I recover from here?
Is this a known problem, and has it been fixed in newer open-iscsi
versions?
Mar 18 18:21:33 eq1-vz2 kernel: connection1:0: detected conn error
(1011)
Mar 18 18:21:36 eq1-vz2 kernel: session1: host reset succeeded
Mar 18 18:22:16 eq1-vz2 kernel: sd 6:0:0:0: scsi: Device offlined -
not ready after error recovery
Mar 18 18:22:16 eq1-vz2 kernel: sd 6:0:0:0: scsi: Device offlined -
not ready after error recovery
Mar 18 18:22:16 eq1-vz2 kernel: sd 6:0:0:0: SCSI error: return code =
0x00020000
Mar 18 18:22:16 eq1-vz2 kernel: end_request: I/O error, dev sdc,
sector 523643177
Mar 18 18:22:16 eq1-vz2 kernel: device-mapper: multipath: Failing path
8:32.
Mar 18 18:22:16 eq1-vz2 kernel: sd 6:0:0:0: SCSI error: return code =
0x00010000
Mar 18 18:22:16 eq1-vz2 kernel: end_request: I/O error, dev sdc,
sector 552260889
... snip - more I/O error messages ...
$ sudo iscsiadm -m session -P3
iSCSI Transport Class version 2.0-869
iscsiadm version 2.0-869
Target: iqn.1986-03.com.sun:02:271d5722-0206-6ad0-fe1f-d44007068ec4
Current Portal: 10.0.15.0:3260,1
Persistent Portal: 10.0.15.0:3260,1
**********
Interface:
**********
Iface Name: iface.bond0
Iface Transport: tcp
Iface Initiatorname: iqn.2005-03.com.equest:eq1-vz2
Iface IPaddress: 10.0.10.1
Iface HWaddress: default
Iface Netdev: bond0
SID: 1
iSCSI Connection State: LOGGED IN
iSCSI Session State: LOGGED_IN
Internal iscsid Session State: NO CHANGE
************************
Negotiated iSCSI params:
************************
HeaderDigest: None
DataDigest: None
MaxRecvDataSegmentLength: 131072
MaxXmitDataSegmentLength: 131072
FirstBurstLength: 262144
MaxBurstLength: 16776192
ImmediateData: Yes
InitialR2T: Yes
MaxOutstandingR2T: 1
************************
Attached SCSI devices:
************************
Host Number: 6 State: running
scsi6 Channel 00 Id 0 Lun: 0
Attached scsi disk sdc State: offline
2010000151723430d00002a0048d003dddm-3 SUN,SOLARIS
[size=300G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][enabled]
\_ 6:0:0:0 sdc 8:32 [failed][faulty]
$ cat /etc/multipath.conf
defaults {
default_features "1 queue_if_no_path"
}
devnode_blacklist {
devnode "^hd[a-z]$"
devnode "^sd[ab]$"
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^cciss!c[0-9]d[0-9]*[p[0-9]*]"
}
Kernel is custom compiled from 2.6.18 source on Debian 4.0
$ uname -a
Linux eq1-vz2 2.6.18-prep-92.1.1.el5.028stab057.2-ovz #1 SMP Mon Aug
25 16:43:00 MDT 2008 x86_64 GNU/Linux
The open-iscsi tools and module were compiled by hand as well.
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