Re: Problem with Multipath (devices not ready)

João Daniel <jd-apinf@xxxxxxxxxx> · Mon, 13 Feb 2006 12:38:50 +0000

Title: Assinatura

Hi again,

    I've tried all your suggestions but i'm still having exactly the
same problems.

    I'm starting to think that my driver isn't good enough to handle
one QLA2340 and 4
paths to the LUN.

    I've tried: update OS, update drivers, update multipath,
re-configurate multipath... 

    What do you think I should try now ?

Best regards,
-- 

                        João Daniel

Apoio Informático 

Sistema de Informação do Instituto Politécnico de Setúbal  

                         Instituto Politécnico de Setúbal 

Esc. Sup. de Tec. de Setúbal 

Campus do IPS, Estefanilha

2910-761 Setúbal 

tel:   

+351 265 790 133

+351 265 790 119

Bernd Zeimetz wrote:

  Hi,

                 default_getuid_callout    "/sbin/scsi_id -g -u -s /block/%
n"

    remove too : the CX need a special flag passed to scsi_id if I
remember ...

  this was mentioned in a thread about the EMC CX a few weeks ago. But I
think there's also a working default setting for this in multipath (at
least it works very well with the default settings here). Also check
http://christophe.varoqui.free.fr/wiki/wakka.php?wiki=TestedEnvironments
- I've mentioned the neccessary settings on the CX there.

Bernd

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> 
> defaults {
> 
>             multipath_tool   "/sbin/multipath -v 0 -S"
> 
>             udev_dir            /dev
> 
>             polling_interval 10
> 
>             default_selector "round-robin 0"
> 
>     #default_path_grouping_policy           failover
> 
>             default_path_grouping_policy     multibus
> 

CX300 is not a multibus-capable hardware.
You should remove this directive and let the in-core defaults apply.

  >             default_getuid_callout    "/sbin/scsi_id -g -u -s /block/%
> n"
> 

remove too : the CX need a special flag passed to scsi_id if I
remember ...

  >             #default_prio_callout      "/bin/false"
> 
>     failback        immediate
> 
> }
> 

Regards,
cvaroqui

  > 

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Hi,

I have
upgraded from SLES9-SP2 to SLES9-SP3.
The purpose
was to fix some problems related to
OCFS2.

I have many
warnings (as you can see below) in my /var/log/messages
related to multipath (i think), indicating that the devices aren't
ready. 
Maybe the
multipath.conf needs some extra
configuration (please see my multipath.conf).
The sdc and
sdd devices are disks out on the EMC.

Can anyone
help me with this problem ?

ERROR
MESSAGES:

(...)
Jan 27
16:16:18 siipstestes kernel: Device sdc not
ready.
Jan 27
16:16:18 siipstestes kernel: Device sdd not
ready.
Jan 27
16:16:29 siipstestes kernel: Device sdc not
ready.
Jan 27
16:16:29 siipstestes kernel: Device sdd not
ready.
Jan 27
16:16:40 siipstestes kernel: Device sdc not
ready.
Jan 27
16:16:40 siipstestes kernel: Device sdd not
ready.
Jan 27
16:16:51 siipstestes kernel: Device sdc not
ready.
Jan 27
16:16:51 siipstestes kernel: Device sdd not
ready.
Jan 27
16:17:02 siipstestes kernel: Device sdc not
ready.
Jan 27
16:17:02 siipstestes kernel: Device sdd not
ready.
Jan 27
16:17:13 siipstestes kernel: Device sdc not
ready.
Jan 27
16:17:13 siipstestes kernel: Device sdd not
ready.
Jan 27
16:17:24 siipstestes kernel: Device sdc not
ready.
Jan 27
16:17:24 siipstestes kernel: Device sdd not
ready.
Jan 27
16:17:35 siipstestes kernel: Device sdc not
ready.
Jan 27
16:17:35 siipstestes kernel: Device sdd not
ready.
Jan 27
16:17:46 siipstestes kernel: Device sdc not
ready.
Jan 27
16:17:46 siipstestes kernel: Device sdd not
ready.
(...)

server:~ #
multipath -v2 -l
dm names  
N  
dm table
LUN_TESTES  N  
dm table
LUN_TESTES  N  
dm status
LUN_TESTES  N  
dm info LUN_TESTES  O  
LUN_TESTES
(360060160256014006adcbf64a644da11)
[size=458
GB][features="0"][hwhandler="0"]
\_
round-robin 0 [active]
 \_ 3:0:0:0
sdc 8:32 [failed][faulty]
 \_ 3:0:1:0
sdd 8:48 [failed][faulty]
 \_ 3:0:2:0
sde 8:64 [active][ready]
 \_ 3:0:3:0
sdf 8:80 [active][ready]

Here is my
MULTIPATH.CONF file:

defaults {

multipath_tool   "/sbin/multipath -v
0 -S"

udev_dir            /dev

polling_interval 10

default_selector "round-robin
0"

#default_path_grouping_policy           failover

#default_path_grouping_policy     multibus

#default_getuid_callout    "/sbin/scsi_id
-g -u -s /block/%n"

#default_prio_callout      "/bin/false"

failback        immediate
}

#
# name    :
devnode_blacklist
# scope   :
multipath & multipathd
# desc    :
list of device names to discard as not
multipath candidates
# default :
cciss, fd, hd, md, dm, sr, scd, st, ram,
raw, loop
#
devnode_blacklist
{

devnode cciss

devnode fd
            devnode hd
            devnode md
            devnode dm-
            devnode sr
            devnode scd
            devnode st
            devnode ram
            devnode raw
            devnode loop
            devnode sda

devnode sdb
}

#
# name    :
multipaths
# scope   :
multipath & multipathd
# desc    :
list of multipaths finest-grained
settings
#
multipaths {
            #

# name  : multipath

# scope : multipath & multipathd

# desc  : container for settings that
apply to one specific multipath
            #
            multipath {

wwid                            360060160256014006adcbf64a644da11

alias                             LUN_TESTES
            }
}

HARDWARE:

- DELL 2850
- 1x QLogic
2340 (BIOS 1.47) to acess my Storage (EMC
Clariion CX300)

SOFTWARE:

- SLES9 (32
bit) + SP3 (with Multipath and OCFS2
configured)
- Oracle
Clusterware Release 2 (10.2.0.1.0)
- Oracle
Database 10g Release 2 (10.2.0.1.0)
- Qlogic
driver: qlafc-linux-8.01.00-4-install.tgz.gz
- Naviagent
CLI: naviagentcli-6.16.0.4.63-1.i386.rpm
- SANsurfer:
emc_sansurfer2.0.30b52_linux_install.bin

- Multipath
0.4.5-0.11

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