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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Stew,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> I don’t see much information about this failure in the logs.
Right now device handlers don’t provide much information on failures. We
are working on to add some more debug levels. I am attaching my draft code (scsi_dh_rdac.c)
here. Please use this only for your testing. It is not been approved/reviewed
yet. I still need to submit this one to community for approval. The code is
attached. Please replace this file with scsi_dh_rdac.c in the directory
/driver/scsi/device_handlers and rebuild the kernel. This should give more
information from the target point of view. Please send me the /var/log/messages
file after the failure. Let see if we can get more information.. </span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks</span></font><font color=navy><span
style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Babu Moger </span></font><o:p></o:p></p>
</div>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
dm-devel-bounces@redhat.com [mailto:dm-devel-bounces@redhat.com] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Stewart Smith<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, August 13, 2009
3:35 PM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">device-mapper
development</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [dm-devel] rdac path
failure - Sun 6140</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Same sequence of events, with multipathd -v3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.627 kernel: device-mapper: multipath: Failing
path 8:208.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: vol1: rr_weight = 2 (LUN setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: vol1: pgfailback = -2 (controller
setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: pg_timeout = NONE (internal
default)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: uevent 'change' from
'/devices/virtual/block/dm-1'<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: UDEV_LOG=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: ACTION=change<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd:
DEVPATH=/devices/virtual/block/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: SUBSYSTEM=block<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DM_TARGET=multipath<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DM_ACTION=PATH_FAILED<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DM_SEQNUM=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DM_PATH=8:208<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DM_NR_VALID_PATHS=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DM_NAME=vol1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd:
DM_UUID=mpath-3600a0b800048335200001e5d48b68a9b<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: MAJOR=253<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: MINOR=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DEVTYPE=disk<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: SEQNUM=1738<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: UDEVD_EVENT=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:48.000 multipathd: DEVNAME=/dev/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: vol1: remaining active paths: 4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: sdj: rdac prio = 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: sdn: rdac prio = 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: sdb: rdac prio = 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: sdd: rdac prio = 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.763 kernel: device-mapper: multipath: Failing
path 8:208.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: uevent 'change' from
'/devices/virtual/block/dm-1'<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: UDEV_LOG=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: ACTION=change<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd:
DEVPATH=/devices/virtual/block/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: SUBSYSTEM=block<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_TARGET=multipath<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_ACTION=PATH_REINSTATED<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_SEQNUM=2<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_PATH=8:208<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_NR_VALID_PATHS=4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_NAME=vol1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd:
DM_UUID=mpath-3600a0b800048335200001e5d48b68a9b<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: MAJOR=253<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: MINOR=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DEVTYPE=diskAug 13 16:28:50.000
multipathd: SEQNUM=1739Aug 13 16:28:50.000 multipathd:
UDEVD_EVENT=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: vol1: rr_weight = 2 (LUN setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: vol1: pgfailback = -2 (controller
setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: pg_timeout = NONE (internal
default)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: vol1: remaining active paths: 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: vol1: rr_weight = 2 (LUN setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: vol1: pgfailback = -2 (controller
setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: uevent 'change' from
'/devices/virtual/block/dm-1'<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: UDEV_LOG=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: ACTION=change<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd:
DEVPATH=/devices/virtual/block/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: SUBSYSTEM=block<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_TARGET=multipath<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_ACTION=PATH_FAILED<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_SEQNUM=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_PATH=8:208<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_NR_VALID_PATHS=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DM_NAME=vol1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd:
DM_UUID=mpath-3600a0b800048335200001e5d48b68a9b<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: MAJOR=253<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: MINOR=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DEVTYPE=disk<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: SEQNUM=1740<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: UDEVD_EVENT=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:28:50.000 multipathd: DEVNAME=/dev/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: vol1: remaining active paths: 4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: sdj: rdac prio = 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: sdn: rdac prio = 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: sdb: rdac prio = 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: sdd: rdac prio = 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: vol1: rr_weight = 2 (LUN setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: vol1: pgfailback = -2 (controller
setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: uevent 'change' from
'/devices/virtual/block/dm-1'<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: UDEV_LOG=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: ACTION=change<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd:
DEVPATH=/devices/virtual/block/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: SUBSYSTEM=block<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DM_TARGET=multipath<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DM_ACTION=PATH_REINSTATED<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DM_SEQNUM=4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DM_PATH=8:208<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DM_NR_VALID_PATHS=4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DM_NAME=vol1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd:
DM_UUID=mpath-3600a0b800048335200001e5d48b68a9b<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: MAJOR=253<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: MINOR=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DEVTYPE=disk<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: SEQNUM=1741<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: UDEVD_EVENT=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:00.000 multipathd: DEVNAME=/dev/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.753 kernel: device-mapper: multipath: Failing
path 8:208.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: vol1: rr_weight = 2 (LUN setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: vol1: pgfailback = -2 (controller
setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: pg_timeout = NONE (internal
default)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: uevent 'change' from
'/devices/virtual/block/dm-1'<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: UDEV_LOG=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: ACTION=change<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd:
DEVPATH=/devices/virtual/block/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: SUBSYSTEM=block<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DM_TARGET=multipath<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DM_ACTION=PATH_FAILED<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DM_SEQNUM=5<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DM_PATH=8:208<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DM_NR_VALID_PATHS=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DM_NAME=vol1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd:
DM_UUID=mpath-3600a0b800048335200001e5d48b68a9b<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: MAJOR=253<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: MINOR=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DEVTYPE=disk<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: SEQNUM=1742<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: UDEVD_EVENT=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:02.000 multipathd: DEVNAME=/dev/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: vol1: remaining active paths: 4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: sdj: rdac prio = 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: sdn: rdac prio = 3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: sdb: rdac prio = 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: sdd: rdac prio = 0<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: vol1: rr_weight = 2 (LUN setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: vol1: pgfailback = -2 (controller
setting)<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: uevent 'change' from
'/devices/virtual/block/dm-1'<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: UDEV_LOG=3<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: ACTION=change<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd:
DEVPATH=/devices/virtual/block/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: SUBSYSTEM=block<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DM_TARGET=multipath<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DM_ACTION=PATH_REINSTATED<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DM_SEQNUM=6<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DM_PATH=8:208<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DM_NR_VALID_PATHS=4<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DM_NAME=vol1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd:
DM_UUID=mpath-3600a0b800048335200001e5d48b68a9b<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: MAJOR=253<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: MINOR=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DEVTYPE=disk<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: SEQNUM=1743<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: UDEVD_EVENT=1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:29:10.000 multipathd: DEVNAME=/dev/dm-1<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Thu, Aug 13, 2009 at 1:27 PM, Stewart Smith <<a
href="mailto:stew@cleepdar.com">stew@cleepdar.com</a>> wrote:<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>after a fresh, multipath -F and start of multipathd with -v 2 I see the
following messages.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>After starting multipathd I mounted /dev/mapper/vol1 and generated some
simple I/O to it using dd<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:14.888 localhost kernel: device-mapper: multipath: Failing
path 8:208.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:14.000 localhost multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:16.000 localhost multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:30.462 localhost kernel: device-mapper: multipath: Failing
path 8:208. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:30.000 localhost multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:39.000 localhost multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:46.430 localhost kernel: device-mapper: multipath: Failing
path 8:208. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:46.000 localhost multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:51.041 localhost kernel: device-mapper: multipath: Failing
path 8:208. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:51.000 localhost multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:23:59.000 localhost multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:24:06.465 localhost kernel: device-mapper: multipath: Failing
path 8:208.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:24:06.000 localhost multipathd: 8:208: mark as failed<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Aug 13 16:24:09.000 localhost multipathd: 8:208: reinstated<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Thanks,<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>--<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 color="#888888" face="Times New Roman"><span
style='font-size:12.0pt;color:#888888'>Stew<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Thu, Aug 13, 2009 at 12:42 PM, <st1:PersonName w:st="on">Moger, Babu</st1:PersonName>
<<a href="mailto:Babu.Moger@lsi.com" target="_blank">Babu.Moger@lsi.com</a>>
wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Do you have /var/log/messages file for this problem?<br>
<br>
Thanks<br>
Babu Moger<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
> -----Original Message-----<br>
> From: <a href="mailto:dm-devel-bounces@redhat.com" target="_blank">dm-devel-bounces@redhat.com</a>
[mailto:<a href="mailto:dm-devel-bounces@redhat.com" target="_blank">dm-devel-bounces@redhat.com</a>]
On<br>
> Behalf Of Stewart Smith<br>
> Sent: Thursday, August 13, 2009 1:51 PM<br>
> To: <a href="mailto:dm-devel@redhat.com" target="_blank">dm-devel@redhat.com</a><br>
> Subject: [dm-devel] rdac path failure - Sun 6140<br>
><br>
> Hello All,<br>
><br>
> I am seeing many of these messages when my Sun 6140 array is under heavy<br>
> I/O<br>
> device-mapper: multipath: Failing path 8:208.<br>
> device-mapper: multipath: Failing path 8:208.<br>
> device-mapper: multipath: Failing path 8:208.<br>
> device-mapper: multipath: Failing path 8:208.<br>
> device-mapper: multipath: Failing path 8:208.<br>
><br>
><br>
> I am running a Fedora 10 server, with two fiber connections to two<br>
> different switches. Both controllers on the 6140 have one
connection<br>
> to each switch as well. The end result is that I see four paths to<br>
> each LUN.<br>
><br>
> When the volume is mounted and under significant load I see the<br>
> messages above every few seconds. They seem to appear every<br>
> "no_path_retry" seconds.<br>
><br>
> The 6140 controller firmware is up to date at version 07.50.08.10 and<br>
> I have installed the latest firmware for my Emulex LPe11002 cards. I<br>
> have reproduced the problem using both Cisco MDS and Brocade fiber<br>
> channel switches as well.<br>
><br>
> Using <st1:place w:st="on">CAM</st1:place>, I have set the initiator Host
Type to "Linux" at the<br>
> moment. I have tried other options as well without success.<br>
><br>
> I have NOT installed the RDAC drivers from either Sun or LSI -<br>
> primarily because they do not seem to build on my Fedora 10 kernel.<br>
><br>
> Any ideas would be greatly appreciated!!!<br>
><br>
> configs and debugging multipathd output is below.<br>
><br>
><br>
><br>
><br>
><br>
> Kernel: 2.6.27.24-170.2.68.fc10.x86_64<br>
><br>
> # multipath -lll<br>
> vol1 (3600a0b800048335200001e5d48b68a9b) dm-1 SUN,CSM200_R<br>
> [size=12T][features=1 queue_if_no_path][hwhandler=1 rdac][rw]<br>
> \_ round-robin 0 [prio=6][active]<br>
> \_ 5:0:1:2 sdj 8:144 [active][ready]<br>
> \_ 2:0:1:2 sdn 8:208 [active][ready]<br>
> \_ round-robin 0 [prio=0][enabled]<br>
> \_ 2:0:0:2 sdb 8:16 [active][ghost]<br>
> \_ 5:0:0:2 sdd 8:48 [active][ghost]<br>
><br>
><br>
> # cat /etc/multipath.conf<br>
><br>
> blacklist {<br>
> devnode "^sd[a-z][[0-9]*]"<br>
> devnode
"^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"<br>
> devnode "^hd[a-z][0-9]*"<br>
> devnode "^cciss!c[0-9]d[0-9](p[0-9]*)*"<br>
> }<br>
><br>
> defaults {<br>
> udev_dir
/dev<br>
> polling_interval 10<br>
> selector
"round-robin 0"<br>
> path_grouping_policy multibus<br>
> getuid_callout
"/sbin/scsi_id --whitelisted /dev/%n"<br>
> prio
alua<br>
> path_checker
readsector0<br>
> rr_min_io
100<br>
> max_fds
8192<br>
> rr_weight
priorities<br>
> failback
immediate<br>
> no_path_retry
fail<br>
> user_friendly_names yes<br>
> }<br>
> devices {<br>
> device {<br>
> vendor
"SUN"<br>
> product
"CSM200_R"<br>
> product_blacklist
"Universal Xport"<br>
> getuid_callout
"/sbin/scsi_id --whitelisted<br>
> /dev/%n"<br>
> features
"0"<br>
> hardware_handler
"1 rdac"<br>
> path_selector
"round-robin 0"<br>
>
path_grouping_policy group_by_prio<br>
> failback
immediate<br>
> rr_weight
uniform<br>
> no_path_retry
queue<br>
> rr_min_io
1000<br>
> path_checker
rdac<br>
> prio
rdac<br>
> }<br>
> }<br>
><br>
> multipaths {<br>
> multipath {<br>
> wwid
3600a0b800048335200001e5d48b68a9b<br>
> alias
vol1<br>
> rr_weight
priorities<br>
> no_path_retry
5<br>
> rr_min_io
100<br>
> }<br>
> }<br>
><br>
><br>
><br>
> # multipathd -d v3<br>
><br>
><br>
> Aug 13 14:48:53 | sdb: ownership set to vol1<br>
> Aug 13 14:48:53 | sdb: not found in pathvec<br>
> Aug 13 14:48:53 | sdb: mask = 0xc<br>
> Aug 13 14:48:53 | sdb: path checker = rdac (controller setting)<br>
> Aug 13 14:48:53 | sdb: state = 4<br>
> Aug 13 14:48:53 | sdb: rdac prio = 0<br>
> Aug 13 14:48:53 | sdd: ownership set to vol1<br>
> Aug 13 14:48:53 | sdd: not found in pathvec<br>
> Aug 13 14:48:53 | sdd: mask = 0xc<br>
> Aug 13 14:48:53 | sdd: path checker = rdac (controller setting)<br>
> Aug 13 14:48:53 | sdd: state = 4<br>
> Aug 13 14:48:53 | sdd: rdac prio = 0<br>
> Aug 13 14:48:53 | sdj: ownership set to vol1<br>
> Aug 13 14:48:53 | sdj: not found in pathvec<br>
> Aug 13 14:48:53 | sdj: mask = 0xc<br>
> Aug 13 14:48:53 | sdj: path checker = rdac (controller setting)<br>
> Aug 13 14:48:53 | sdj: state = 2<br>
> Aug 13 14:48:53 | sdj: rdac prio = 3<br>
> Aug 13 14:48:53 | sdn: ownership set to vol1<br>
> Aug 13 14:48:53 | sdn: not found in pathvec<br>
> Aug 13 14:48:53 | sdn: mask = 0xc<br>
> Aug 13 14:48:53 | sdn: path checker = rdac (controller setting)<br>
> Aug 13 14:48:53 | sdn: state = 2<br>
> Aug 13 14:48:53 | sdn: rdac prio = 3<br>
> Aug 13 14:48:53 | vol1: pgfailback = -2 (controller setting)<br>
> Aug 13 14:48:53 | vol1: pgpolicy = group_by_prio (controller setting)<br>
> Aug 13 14:48:53 | vol1: selector = round-robin 0 (controller setting)<br>
> Aug 13 14:48:53 | vol1: features = 0 (controller setting)<br>
> Aug 13 14:48:53 | vol1: hwhandler = 1 rdac (controller setting)<br>
> Aug 13 14:48:53 | vol1: rr_weight = 2 (LUN setting)<br>
> Aug 13 14:48:53 | vol1: minio = 100 (LUN setting)<br>
> Aug 13 14:48:53 | vol1: no_path_retry = 5 (multipath setting)<br>
> Aug 13 14:48:53 | pg_timeout = NONE (internal default)<br>
> Aug 13 14:48:53 | vol1: set ACT_CREATE (map does not exist)<br>
> create: vol1 (3600a0b800048335200001e5d48b68a9b) n/a SUN,CSM200_R<br>
> [size=12T][features=0][hwhandler=1 rdac][n/a]<br>
> \_ round-robin 0 [prio=6][undef]<br>
> \_ 5:0:1:2 sdj 8:144 [undef][ready]<br>
> \_ 2:0:1:2 sdn 8:208 [undef][ready]<br>
> \_ round-robin 0 [prio=0][undef]<br>
> \_ 2:0:0:2 sdb 8:16 [undef][ghost]<br>
> \_ 5:0:0:2 sdd 8:48 [undef][ghost]<br>
><o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>> --<br>
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<font color="#888888"><span style='color:#888888'><br>
--<br>
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