On Tue, 2013-04-09 at 13:59 +0200, Gianluca Cecchi wrote:
> On Tue, Apr 9, 2013 at 1:56 PM, René Koch (ovido) wrote:
> > Hi Gianluca,
> >
> >
> > On Tue, 2013-04-09 at 12:50 +0200, Gianluca Cecchi wrote:
> >> Hello,
> >> I have the chance to work on Intel blades where I have option to
> >> confihure shared disks between them at enclosure level.
> >> Their controller is scsi.
> >> How could I configure as shared storage in ovirt?
> >> I presume neither Fc nor iscsi are possible. .. so what can i do in
> >> your opinion?
> >
> >
> > Is this an Intel modular server, btw?
> > If yes - create a Fibre channel datacenter and add the storage as FC
> > LUNs. I can also send you a working multipath.conf for Intel Modular if
> > required...
> >
> >
> > Regards,
> > René
> >
>
> Yes, it is an Intel modular server (I don't know well this platform
> but I think IMS is its acronym)
You can contact me if you have questions regarding these server - I
use(d) this system in the company I worked before and on customer side.
> The multipath working configuration would be more than appreciated ;-)
> But does this mean there are configuration with dual scsi or is
> multipath needed in every case (as I see oVirt config implies
> multipath configuration anyway.)
Attached is a working multipath.conf for RHEV-H 3.0.
You need a working multipath.conf file if you have redundant storage
controllers.
Find out the wwids of your devices and add them to your
blacklist_exceptions section.
# multipath -ll
mpathb (b00015521f5d4) dm-0 Intel,Multi-Flex
size=96G features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| `- 0:0:0:1 sdb 8:16 active ready running
mpatha (222140001553601d1) dm-1 Intel,Multi-Flex
size=20G features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| `- 0:0:0:0 sda 8:0 active ready running
Don't forget to persist /etc/multipath.conf if you're using ovirt-node!
With this config you don't need the Intel multipath drivers, btw.
Please let me know if you have further questions.
>
> Gianluca
# RHEV REVISION 0.7
# RHEV PRIVATE
defaults {
udev_dir/dev
polling_interval10
path_selector "round-robin 0"
path_grouping_policymultibus
getuid_callout "/lib/udev/scsi_id --whitelisted
--device=/dev/%n"
prioalua
path_checkerreadsector0
rr_min_io 100
max_fds 8192
rr_weight priorities
failbackimmediate
no_path_retry fail
user_friendly_names yes
}
blacklist {
wwid 26353900f02796769
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
}
blacklist_exceptions {
wwid "b00015521f5d4"
wwid "222140001553601d1"
}
devices {
device {
vendor "Intel"
product "Multi-Flex"
path_grouping_policygroup_by_prio
getuid_callout "/lib/udev/scsi_id --whitelisted
--device=/dev/%n"
prio"tpg_pref"
path_checkertur
path_selector "round-robin 0"
hardware_handler"1 alua"
failbackimmediate
rr_weight uniform
rr_min_io 100
no_path_retry queue
features"1 queue_if_no_path"
product_blacklist "VTrak V-LUN"
}
}
multipaths {
multipath {
uid 0
alias mpatha
gid 0
wwid "222140001553601d1"
mode 0600
}
multipath {
uid 0
alias mpathb
gid 0
wwid "b00015521f5d4"
mode 0600
}
}___
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