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тАО06-19-2016 01:23 PM
тАО06-19-2016 01:23 PM
StoreVirtual 4000 and multipath-tools - Linux
Hi,
Is there an official multipath.conf template ?
Thank you.
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тАО06-29-2016 08:30 AM
тАО06-29-2016 08:30 AM
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
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тАО06-29-2016 08:44 AM - edited тАО06-29-2016 08:55 AM
тАО06-29-2016 08:44 AM - edited тАО06-29-2016 08:55 AM
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.
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тАО07-01-2016 12:47 PM
тАО07-01-2016 12:47 PM
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.
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тАО07-01-2016 01:07 PM
тАО07-01-2016 01:07 PM
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
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тАО07-01-2016 01:48 PM
тАО07-01-2016 01:48 PM
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.