Hi Emmanuel,
it's a merge of the default settings I've taken from the
/usr/share/doc/package/multipath-tools/multipath.conf.annotated and the
OPEN-* section of the HPDMmultipath-4.4.1 multipath.conf.HPTemplate.SLES11
file, here it is:
defaults {
udev_dir /dev
polling_interval 5
selector "round-robin 0"
prio const
user_friendly_names no
getuid_callout "/lib/udev/scsi_id --whitelisted
--device=/dev/%n"
failback manual
no_path_retry fail
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z][[0-9]*]"
}
blacklist_exceptions {
}
multipaths {
multipath {
alias "san"
wwid "360060e8006d2e1000000d2e1000000e6"
}
}
devices {
# For XP arrays
device {
vendor "HP"
product "OPEN-.*"
path_grouping_policy multibus
path_selector "round-robin 0"
rr_min_io 1000
rr_weight uniform
path_checker tur
# no_path_retry 18
# hardware_handler "0"
# failback immediate
# getuid_callout "/lib/udev/scsi_id -g -u /dev/%n"
}
}
I've commented out some of the HP template device lines due to the
recommended configuration for clustering, read in the SLES 11 Sp1 Storage
Administration Guide:
"We recommend failback setting of "manual" for multipath in cluster
environments in order to prevent multipath failover ping-pong."
and in the mailing list: " Fourth, don't run SBD on queue_if_no_path MPIO."
>From Mr. Lars at this link: http://en.it-usenet.org/thread/18723/12998/
And this my multipath -ll output:
server1:~ # multipath -ll
san (360060e8006d2e1000000d2e1000000e6) dm-0 HP,OPEN-V
size=50G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
|- 1:0:0:0 sdb 8:16 active ready running
`- 2:0:0:0 sdc 8:32 active ready running
andrea
----- Original Message -----
From: emmanuel segura
Newsgroups: gmane.linux.highavailability.pacemaker
To: The Pacemaker cluster resource manager
Sent: Thursday, May 02, 2013 4:25 PM
Subject: Re: Frequent SBD triggered server reboots
Hello Andrea
Can you show me your multipath.conf?
Thanks
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