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Full Discussion: How to Cleanup Multipathing
Operating Systems Linux Red Hat How to Cleanup Multipathing Post 302532876 by Tirmazi on Wednesday 22nd of June 2011 09:34:43 AM
Old 06-22-2011
How to Cleanup Multipathing

I have a server running redhat 5.5 and it has one SAN device presented to it as LUN9. How can I clean up the remaining entries. I cannot afford to interupt the service. Please assist.

Code:
[root@whatever_server device]# multipath -l
mpath0 (36000097000019260298953666633436) dm-11 EMC,SYMMETRIX
[size=40G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
 \_ 2:0:0:9     sda 8:0   [active][undef]
 \_ 3:0:0:9     sdb 8:16  [active][undef]
 \_ 2:0:0:32777 sdc 8:32  [active][undef]
 \_ 2:0:0:32793 sdd 8:48  [active][undef]
 \_ 3:0:0:32777 sde 8:64  [active][undef]
 \_ 3:0:0:32793 sdf 8:80  [active][undef]
 \_ 2:0:0:36873 sdg 8:96  [active][undef]
 \_ 2:0:0:36889 sdh 8:112 [active][undef]
 \_ 3:0:0:36873 sdi 8:128 [active][undef]
 \_ 3:0:0:36889 sdj 8:144 [active][undef]
 \_ 2:0:0:40969 sdk 8:160 [active][undef]
 \_ 2:0:0:40985 sdl 8:176 [active][undef]
 \_ 3:0:0:40969 sdm 8:192 [active][undef]
 \_ 3:0:0:40985 sdn 8:208 [active][undef]
 \_ 2:0:0:45065 sdo 8:224 [active][undef]
 \_ 3:0:0:45065 sdp 8:240 [active][undef]
 \_ 2:0:0:45081 sdq 65:0  [active][undef]
 \_ 3:0:0:45081 sdr 65:16 [active][undef]


Last edited by pludi; 06-22-2011 at 10:41 AM..
 

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NAME
Perl::Critic::Policy::BuiltinFunctions::ProhibitSleepViaSelect - Use Time::HiRes instead of something like "select(undef, undef, undef, .05)". AFFILIATION
This Policy is part of the core Perl::Critic distribution. DESCRIPTION
Conway discourages the use of "select()" for performing non-integer sleeps. Although documented in perlfunc, it's something that generally requires the reader to read "perldoc -f select" to figure out what it should be doing. Instead, Conway recommends that you use the "Time::HiRes" module when you want to sleep. select undef, undef, undef, 0.25; # not ok use Time::HiRes; sleep( 0.25 ); # ok CONFIGURATION
This Policy is not configurable except for the standard options. SEE ALSO
Time::HiRes. AUTHOR
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