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RE: [dm-devel] multipath errors on first set-up



Hi,
Thanks for the reply.

I have fixed the invaliud messages output by installed the 64 bit
version of multipath. 
I have re-tried the build stage but the mpathX device file is still not
being created.

Here is the output:

output from multipath -v4


cciss!c0d0 blacklisted
dm-0 blacklisted
dm-1 blacklisted
dm-2 blacklisted
dm-3 blacklisted
dm-4 blacklisted
dm-5 blacklisted
fd0 blacklisted
hda blacklisted
md0 blacklisted
ram0 blacklisted
ram10 blacklisted
ram11 blacklisted
ram12 blacklisted
ram13 blacklisted
ram14 blacklisted
ram15 blacklisted
ram1 blacklisted
ram2 blacklisted
ram3 blacklisted
ram4 blacklisted
ram5 blacklisted
ram6 blacklisted
ram7 blacklisted
ram8 blacklisted
ram9 blacklisted
path sda not found in pathvec

===== path sda =====
bus = 1
dev_t = 8:0
size = 3906810493
vendor = HP
product = MSA VOLUME
rev = 6.86
h:b:t:l = 0:0:0:1
tgt_node_name = 0x500508b300930230
serial = PB9840PX3TF0C0
path checker = readsector0 (internal default) state = 2 getprio = (null)
(internal default) prio = 1 getuid = /sbin/scsi_id -g -u -s /block/%n
(internal default) uid = 3600508b300930230a7495ae1b9500074 (callout)
path sdb not found in pathvec

===== path sdb =====
bus = 1
dev_t = 8:16
size = 3906810493
vendor = HP
product = MSA VOLUME
rev = 6.86
h:b:t:l = 1:0:0:1
tgt_node_name = 0x500508b300930230
serial = PB9840PX3TJ0FU
path checker = readsector0 (internal default) state = 2 getprio = (null)
(internal default) prio = 1 getuid = /sbin/scsi_id -g -u -s /block/%n
(internal default) uid = 3600508b300930230a7495ae1b9500074 (callout)
path sdc not found in pathvec

===== path sdc =====
bus = 1
dev_t = 8:32
size = 3906810493
vendor = HP
product = MSA VOLUME
rev = 6.86
h:b:t:l = 2:0:0:1
tgt_node_name = 0x500508b300930230
serial = PB9840PX3TF0C0
path checker = readsector0 (internal default) state = 2 getprio = (null)
(internal default) prio = 1 getuid = /sbin/scsi_id -g -u -s /block/%n
(internal default) uid = 3600508b300930230a7495ae1b9500074 (callout)
path sdd not found in pathvec

===== path sdd =====
bus = 1
dev_t = 8:48
size = 3906810493
vendor = HP
product = MSA VOLUME
rev = 6.86
h:b:t:l = 3:0:0:1
tgt_node_name = 0x500508b300930230
serial = PB9840PX3TJ0FU
path checker = readsector0 (internal default) state = 2 getprio = (null)
(internal default) prio = 1 getuid = /sbin/scsi_id -g -u -s /block/%n
(internal default) uid = 3600508b300930230a7495ae1b9500074 (callout) # #
all paths :
#
3600508b300930230a7495ae1b9500074 0:0:0:1 sda  8:0     [MSA VOLUME
]
3600508b300930230a7495ae1b9500074 1:0:0:1 sdb  8:16    [MSA VOLUME
]
3600508b300930230a7495ae1b9500074 2:0:0:1 sdc  8:32    [MSA VOLUME
]
3600508b300930230a7495ae1b9500074 3:0:0:1 sdd  8:48    [MSA VOLUME
]
pgpolicy = failover (internal default)
selector = round-robin 0 (internal default) features = 0 (internal
default) hwhandler = 0 (internal default) 0 3906810493 multipath 0 0 4 1
round-robin 0 1 1 8:0 1000 round-robin 0 1 1 8:16 1000 round-robin 0 1 1
8:32 1000 round-robin 0 1 1 8:48 1000 action preset to 0 action set to 4
create: 3600508b300930230a7495ae1b9500074
[size=1 TB][features="0"][hwhandler="0"] \_ round-robin 0
  \_ 0:0:0:1 sda  8:0
\_ round-robin 0
  \_ 1:0:0:1 sdb  8:16
\_ round-robin 0
  \_ 2:0:0:1 sdc  8:32
\_ round-robin 0
  \_ 3:0:0:1 sdd  8:48

message 3600508b300930230a7495ae1b9500074 0 switch_group 1

 
messages in /var/adm/messages:

Feb 18 16:32:18 brli036a multipathd: path checkers start up
Feb 18 16:32:18 brli036a multipathd: multipathd startup succeeded
Feb 18 16:32:38 brli036a multipathd: 3600508b300930230a7495ae1b9500074:
event checker started
Feb 18 16:32:38 brli036a multipathd: add
3600508b300930230a7495ae1b9500074 devmap
Feb 18 16:32:39 brli036a multipathd: 8:0: readsector0 checker reports
path is up
Feb 18 16:32:39 brli036a multipathd: 8:0: reinstated
Feb 18 16:32:39 brli036a multipathd: 8:16: readsector0 checker reports
path is up
Feb 18 16:32:39 brli036a multipathd: 8:16: reinstated
Feb 18 16:32:39 brli036a multipathd: 8:32: readsector0 checker reports
path is up
Feb 18 16:32:39 brli036a multipathd: 8:32: reinstated


I did comment out all of /etc/modules.conf as you suggested before I
restarted,

Is there a problem with RHEL 4 QU2?

with regards,
                  Julian
Name: Julian Rogan
Role: Unix Server Analyst
Department: Enterprise Hosting
Regional Group: Unilever Europe IT Services
Telephone : +44 (0) 1244 50 1356
Mobile: +44 (0) 7876 390715
Office Base: Unity House, St Davids Park, Ewloe, UK. CH5 3XT
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-----Original Message-----
From: dm-devel-bounces redhat com [mailto:dm-devel-bounces redhat com]
On Behalf Of Benjamin Marzinski
Sent: Friday, February 15, 2008 8:20 PM
To: device-mapper development
Subject: Re: [dm-devel] multipath errors on first set-up

On Fri, Feb 15, 2008 at 04:22:07PM -0000, Rogan, Julian wrote:
>    Hi,
>    I am using multipath for the first time with little joy.

<snip>
 
>    based on some other documents I made the following changes to
>    /etc/multipath.conf

You can probably leave the entire /etc/multipath.conf commented out.
Everything should just autodetect correctly.
 
>    I ran
>    multipath -v3 to recreate I get the following:

<snip>

>    device-mapper ioctl cmd 14 failed: Invalid argument
>    message 3600508b300930230a7495ae1b9500074 0 switch_group 1
>    failed
> 
>    Note sure if "path sdX not found in pathvec" relevant

No, that's supposed to be there.
 
>    anyway no mpaths have been created.
> 
>    I hope there is someone out there who can give me some help with
this.

No chance you can update to a more recent version of RHEL4?

The device-mapper message means the command you send to device-mapper
didn't work.  However, it looks completely sensible.  What version of
device-mapper are you using?

# rpm -q device-mapper

I'm guessing that you will see something like
device-mapper-1.01.04-1.0.RHEL4

device-mapper-multipath-0.4.5-6.0.RHEL4 needs
device-mapper-1.02.*

Look at things from my side, it definitely seems like RHEL 4.2 says it
uses device-mapper-1.01, which doesn't make any sense, since
device-mapper-multipath-0.4.5-6.0.RHEL4 was definitely compiled against
device-mapper-1.02, and I don't believe that the can both 1.01 and 1.02
can coexist on a system.

The easy solution is to upgrade to at least RHEL 4.3

If that's impossible, you can try to upgrade device-mapper to
device-mapper-1.02.02-1.0.RHEL4 or later.  This might cause all sorts of
dependancy issues. It may be easier to downgrade device-mapper-multipath
to device-mapper-multipath-0.4.5-5.2.RHEL4

I'm not sure why this incompatibility exists now, since it obviously
didn't when RHEL 4.2 was originally released. My best guess is that
device-mapper-multipath-0.4.5-6.0.RHEL4 didn't really get released until
RHEL 4.3, but that's just a guess.

Of course, if you already have device-mapper-1.02.* on your system, and
are still seeing these issues, then something else is going on.

-Ben

>    with regards,
>    Julian Rogan

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