[CentOS] multipath using defaults rather than multipath.conf contents for some devices (?) - why ?
nate
centos at linuxpowered.net
Thu Sep 17 01:07:30 UTC 2009
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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