?
Solved

How do you take a local drive out of mulitpath in Linux?

Posted on 2012-04-13
2
Medium Priority
?
1,280 Views
Last Modified: 2012-04-15
I have a new system I just built that has somehow added a local drive /dev/sdb1 into multipath:

[root@server /]# multipath -ll
multipath.conf line 114, invalid keyword: polling_interval
multipath.conf line 126, invalid keyword: polling_interval
multipath.conf line 140, invalid keyword: polling_interval
multipath.conf line 141, invalid keyword: selector
multipath.conf line 145, invalid keyword: max_fds
mpath0 (36782bcb0624a720016aa6bcd12321c25) dm-5 DELL,PERC 6/i
[size=279G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
 \_ 0:2:1:0 sdb 8:16  [active][ready]

Open in new window


It does not need to be in there and should be treated as a normal local drive. How can I remove it from multipath?
0
Comment
Question by:Thaidog
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 8

Accepted Solution

by:
Pepe2323 earned 2000 total points
ID: 37844159
Hi

If you don't have storge like SAN that can have more than 1 path there is no sense you have multipath running

So you can disable it, this is a service running

Also you can black list specific devices into /etc/multipath.conf

blacklist {
      wwid SIBM-ESXSST336732LC____F3ET0EP0Q000072428BX1 -----> this is id of the disk
}

you can get it with this command


# multipath -v2
create: SIBM-ESXSST336732LC____F3ET0EP0Q000072428BX1 undef WINSYS,SF2372 ----->  id listed here
size=33 GB features="0" hwhandler="0" wp=undef
`-+- policy='round-robin 0' prio=1 status=undef
  |- 0:0:0:0 sda 8:0  [---------

you can get more details on this link http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/DM_Multipath/ignore_localdisk_procedure.html
0
 
LVL 1

Author Comment

by:Thaidog
ID: 37847883
Well I did a chkconfig multipathd off but the local disk was still getting listed with multipath -ll even with the daemon off... I'm guessing due to the driver being loaded. I blacklisted the sd[a/z] devices in multipath.conf and so far so good. Thanks for your help!
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Fine Tune your automatic Updates for Ubuntu / Debian
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial
Suggested Courses
Course of the Month12 days, 23 hours left to enroll

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question