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StoreVirtual 4000 and multipath-tools - Linux

xosevp
Occasional Visitor

StoreVirtual 4000 and multipath-tools - Linux

Hi,

Is there an official multipath.conf template ?

Thank you.

5 REPLIES
Stephan_K
HPE Pro

Re: StoreVirtual 4000 and multipath-tools - Linux

Hi,

no there isn´t an official one from our side. We point you to to configuration details which come from your distribution.

e.g. from SuSE or RedHat

KR Stephan

I am an HPE employee.
Stor_Mort
HPE Pro

Re: StoreVirtual 4000 and multipath-tools - Linux

There are so many variations in the way you can set up your Linux servers that we can only provide general guidelines. See the attached DM Multipath application note from 2010. Please investigate the options and modify /etc/multipath.conf as necessary for your site. Remember to 'service multipathd reload' and 'multipath -v2' after modifying the config file.

Here is a starting point for you:

devices {

device {

    vendor                 "LEFTHAND"

product                "iSCSIDisk"

        path_selector          "round-robin 0"

    path_grouping_policy   multibus

    getuid_callout         "/lib/udev/scsi_id --whitelisted --device=/dev/%n"

    failback               immediate

    rr_weight              priorities

    no_path_retry          5

}

}

Here is a blacklist statement that removes local drives from multipath processing:

blacklist {

    devnode    "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"

    devnode    "^hd[a-z]"

}

 You may also want to add the _netdev option to your /etc/fstab statements for the iSCSI volumes so mounting is delayed until networking is up.

I am an HPE employee - HPE StoreVirtual Support
xosevp
Occasional Visitor

Re: StoreVirtual 4000 and multipath-tools - Linux

What I am looking for is a iSCSI and FC standard configuration to be included in upstream multipath-tool project [1]

As there is no documentation for Linux In the HPE www pages or PDFs.

I only got  some old templates from:

https://www.citrix.com/blogs/2013/10/02/hp-p4000-multipath-config-file/

https://marc.info/?l=dm-devel&m=125432891514890

 

Thank you.

 

[1] http://christophe.varoqui.free.fr/

Stephan_K
HPE Pro

Re: StoreVirtual 4000 and multipath-tools - Linux

Hi xosevp,

no there isn't an standard version, because of the many different distributions.

But I would use the old one you found and check if the parameters are valid for current os versions

have a nice day.

stephan

I am an HPE employee.
Stor_Mort
HPE Pro

Re: StoreVirtual 4000 and multipath-tools - Linux

The vendor and product information may vary over time due to software revisions. Check /proc/iscsi/iscsi for current information about the SAN volumes that are presented to your servers. The remaining parameters should be fairly stable.

I am an HPE employee - HPE StoreVirtual Support