[CentOS] multipath using defaults rather than multipath.conf contents for some devices (?) - why ?

[McCulloch, Alan]

thanks

whats being presented as reported by /proc/scsi/scsi 
seems to match the keys in /etc/multipath.conf :


[root at illuminati scsi]# cat scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: HP       Model: Ultrium 3-SCSI   Rev: M23Z
  Type:   Sequential-Access                ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: HP       Model: HSV200           Rev: 6220
  Type:   RAID                             ANSI SCSI revision: 05
Host: scsi0 Channel: 00 Id: 02 Lun: 00
  Vendor: HP       Model: HSV200           Rev: 6220
  Type:   RAID                             ANSI SCSI revision: 05
.
.
.
Host: scsi0 Channel: 00 Id: 03 Lun: 04
  Vendor: HP       Model: HSV400           Rev: 0952
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi0 Channel: 00 Id: 03 Lun: 05
  Vendor: HP       Model: HSV400           Rev: 0952
  Type:   Direct-Access                    ANSI SCSI revision: 05
.
.
.

Thanks for the suggestion about setting the defaults - I'll check 
with product vendor.

(Re the trailing whitespace after the product name - so some devices
present with a trailing whitespace in the name ?)

Still curious about why the defaults are being used.

cheers

Alan McCulloch



-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf Of nate
Sent: Thursday, 17 September 2009 1:08 p.m.
To: centos at centos.org
Subject: Re: [CentOS] multipath using defaults rather than multipath.conf contents for some devices (?) - why ?

McCulloch, Alan wrote:
> hi all
>
> We have a rh linux server connected to two HP SAN controllers, one an HSV200
> (on the way out),
> the other an HSV400 (on the way in). (Via a Qlogic HBA).
>
> /etc/multipath.conf contains this :
>
> device
> {
>         vendor          "(COMPAQ|HP)"
>         product         "HSV1[01]1|HSV2[01]0|HSV300|HSV4[05]0"

What does /proc/scsi/scsi say? Perhaps your config doesn't
match what the system is being presented.

For my MPIO my vendor suggested setting the defaults manually
in the config file so my config file is:

defaults {
       udev_dir        /dev
       polling_interval 10
       default_selector        "round-robin 0"
       default_path_grouping_policy    multibus
       default_getuid_callout  "/sbin/scsi_id -g -u -s /block/%n"
       default_prio_callout    /bin/true
       rr_wmin_io              100
       rr_weight		priorities
       failback                immediate
}

blacklist {
	wwid 26353900f02796769
	devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
	devnode "^hd[a-z][0-9]*"
	devnode "^cciss*"
}

devices {

	device {
		vendor "3PARdata"
		product "VV "
		path_grouping_policy multibus
		path_checker tur
		no_path_retry 60
	}
}

multipath -l
350002ac0006a0714dm-1 3PARdata,VV
[size=1.0T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
 \_ 1:0:0:3 sdc 8:32  [active][undef]
 \_ 1:0:1:3 sde 8:64  [active][undef]
 \_ 2:0:0:3 sdg 8:96  [active][undef]
 \_ 2:0:1:3 sdi 8:128 [active][undef]
350002ac000790714dm-0 3PARdata,VV
[size=2.0T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
 \_ 1:0:0:2 sdb 8:16  [active][undef]
 \_ 1:0:1:2 sdd 8:48  [active][undef]
 \_ 2:0:0:2 sdf 8:80  [active][undef]
 \_ 2:0:1:2 sdh 8:112 [active][undef]

/proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 32 Lun: 00
  Vendor: DP       Model: BACKPLANE        Rev: 1.05
  Type:   Enclosure                        ANSI SCSI revision: 05
Host: scsi0 Channel: 02 Id: 00 Lun: 00
  Vendor: DELL     Model: PERC 6/i         Rev: 1.11
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi1 Channel: 00 Id: 00 Lun: 02
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi1 Channel: 00 Id: 00 Lun: 03
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi1 Channel: 00 Id: 01 Lun: 02
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi1 Channel: 00 Id: 01 Lun: 03
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 02
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 03
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 01 Lun: 02
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi2 Channel: 00 Id: 01 Lun: 03
  Vendor: 3PARdata Model: VV               Rev: 0000
  Type:   Direct-Access                    ANSI SCSI revision: 05

nate


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