multipathd dies at startup

multipathd dies at startup

[Geoff Galitz]

I am trying to get dm-multipath configured to support my iSCSI setup, but I
have a problem with multipathd dieing silently at startup.

kernel 2.6.18-53.1.21.el5
package: device-mapper-multipath-0.4.7-12.el5_1.4
distro: Centos 5.1

Multpath config:



-----------------------------------
# Blacklist all devices by default. Remove this to enable multipathing
# on the default devices.
blacklist {
devnode "*"
}

blacklist_exceptions {
device {
vendor "IET" 
product "VIRTUAL-DISK"
}
}

multipaths {
multipath {
wwid 14945540000000000000000000100000037800f000000d00f
alias yellow
path_grouping_policy multibus
path_checker readsector0
path_selector "round-robin 0"
failback immediate
rr_weight priorities
no_path_retry 5
}
}

device {
vendor "IET"
product "VIRTUAL-DISK"
path_grouping_policy failover
features "1 queue_if_no_path"
failback immediate
}
}




Geoff Galitz
Blankenheim NRW, Deutschland
http://www.galitz.org

Re: multipathd dies at startup

[Finnur Örn Guðmundsson]

Geoff Galitz wrote:
>
> I am trying to get dm-multipath configured to support my iSCSI setup, but I
> have a problem with multipathd dieing silently at startup.
>
> kernel 2.6.18-53.1.21.el5
> package: device-mapper-multipath-0.4.7-12.el5_1.4
> distro: Centos 5.1
>
> Multpath config:
>
>
>
> -----------------------------------
> # Blacklist all devices by default. Remove this to enable multipathing
> # on the default devices.
> blacklist {
> devnode "*"
> }
>
> blacklist_exceptions {
> device {
> vendor "IET" 
> product "VIRTUAL-DISK"
> }
> }
>
> multipaths {
> multipath {
> wwid 14945540000000000000000000100000037800f000000d00f
> alias yellow
> path_grouping_policy multibus
> path_checker readsector0
> path_selector "round-robin 0"
> failback immediate
> rr_weight priorities
> no_path_retry 5
> }
> }
>
> device {
> vendor "IET"
> product "VIRTUAL-DISK"
> path_grouping_policy failover
> features "1 queue_if_no_path"
> failback immediate
> }
> }
>
>
>
>
> Geoff Galitz
> Blankenheim NRW, Deutschland
> http://www.galitz.org
>
>
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
>   
Hi,
Having recently hit the same issue, it was a SELinux problem in my case.
Try: setenforce 0 ; service multipathd restart

See if it works for you. I also remember seeing a fix from RHEL/CentOS 
regarding this.

Thanks,
Finnur

RE: multipathd dies at startup

[Geoff Galitz]

Thanks for the reply.  Just for the record it is now fixed.  Here is what
happened:

Tested on Centos 5.1 i368: multipathd died reliably
Tested on Centos 5.1 x86_64:  works like a charm

And then it turns out that Centos 5.2 came down the line just last night for
me, so I updated and now multipathd works for me in both i386 and x86_64.

Again, thanks for the help.

-geoff


Geoff Galitz
Blankenheim NRW, Deutschland
http://www.galitz.org

-----Original Message-----
From: dm-devel-bounces@redhat.com [mailto:dm-devel-bounces@redhat.com] On
Behalf Of Finnur Örn Guðmundsson
Sent: Mittwoch, 25. Juni 2008 01:50
To: device-mapper development
Subject: Re: [dm-devel] multipathd dies at startup

Geoff Galitz wrote:
>
> I am trying to get dm-multipath configured to support my iSCSI setup, but
I
> have a problem with multipathd dieing silently at startup.
>
> kernel 2.6.18-53.1.21.el5
> package: device-mapper-multipath-0.4.7-12.el5_1.4
> distro: Centos 5.1
>
> Multpath config:
>
>
>
> -----------------------------------
> # Blacklist all devices by default. Remove this to enable multipathing
> # on the default devices.
> blacklist {
> devnode "*"
> }
>
> blacklist_exceptions {
> device {
> vendor "IET" 
> product "VIRTUAL-DISK"
> }
> }
>
> multipaths {
> multipath {
> wwid 14945540000000000000000000100000037800f000000d00f
> alias yellow
> path_grouping_policy multibus
> path_checker readsector0
> path_selector "round-robin 0"
> failback immediate
> rr_weight priorities
> no_path_retry 5
> }
> }
>
> device {
> vendor "IET"
> product "VIRTUAL-DISK"
> path_grouping_policy failover
> features "1 queue_if_no_path"
> failback immediate
> }
> }
>
>
>
>
> Geoff Galitz
> Blankenheim NRW, Deutschland
> http://www.galitz.org
>
>
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
>   
Hi,
Having recently hit the same issue, it was a SELinux problem in my case.
Try: setenforce 0 ; service multipathd restart

See if it works for you. I also remember seeing a fix from RHEL/CentOS 
regarding this.

Thanks,
Finnur

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