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September 25th, 2009 07:00
RedHat : PowerPath or not ?
Hi,
Soon I will have to connect a RedHat (probably a recent version) on a CX3-80 wtih 2 HBAs. Should I use PowerPath or is there a native tool for multi-pathing supported by EMC ?
Many thanks
Soon I will have to connect a RedHat (probably a recent version) on a CX3-80 wtih 2 HBAs. Should I use PowerPath or is there a native tool for multi-pathing supported by EMC ?
Many thanks
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dynamox
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September 25th, 2009 07:00
stinguer
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October 15th, 2009 07:00
Sorry I was missing for some days.
Today I try to connect a RHEL 5.3 to a CX3-80. I would like to test with DM-MPIO prior to test with PowerPath.
I am following "EMC® Host Connectivity Guide for Linux P/N 300-003-865 REV A13" and in particular the section "MPIO configuration RHEL 5"
I have modified /etc/multipath.conf :
[root@SVOUTEPMESS etc]# diff multipath.conf multipath.conf.orig
11,13c11,13
< #blacklist {
< # devnode "*"
< #}
---
devnode "*"
}
Then when performing a dry run with "multipath -v2 -d" there is no result.
However the server seems to see the 4 paths of the LUN :
[root@SVOUTEPMESS ql-dynamic-tgt-lun-disc-2.3]# /sbin/multipath -ll
mpath0 (360060160d6cb1b004ec70938d3b8de11) dm-0 DGC,RAID 5
[size=300G][features=1 queue_if_no_path][hwhandler=1 emc][rw]
\_ round-robin 0 [prio=2][active]
\_ 1:0:0:0 sda 8:0 [active][ready]
\_ 0:0:1:0 sdd 8:48 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 1:0:1:0 sdb 8:16 [active][ready]
\_ 0:0:0:0 sdc 8:32 [active][ready]
Any idea ?
SKT2
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October 15th, 2009 08:00
360060160f1731100e8ef486b8825dd11 3:0:0:0 sdb 8:16 [active] DGC /RAID 5
360060160f1731100e8ef486b8825dd11 3:0:1:0 sdc 8:32 1 [active] DGC /RAID 5
stinguer
10 Posts
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October 15th, 2009 08:00