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Hi all, I'm experiencing problems trying to set up a multipathd
config with a EMC Clariion CX-4 Storage. It seems that the CX4 is actually active/passive regarding
SPs. My server has QLogic Fiber Cards. My multipath-tools version is 0.4.8. Here is my multipath.conf : ## ## This is a template multipath-tools configuration file ## Uncomment the lines relevent to your environment ## defaults { user_friendly_names yes } blacklist { #devnode "*" devnode
"^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*" devnode "^hd[a-z][[0-9]*]" devnode
"^cciss!c[0-9]d[0-9]*[p[0-9]*]" } devices { device { vendor "DGC
" product "*" path_grouping_policy group_by_prio getuid_callout
"/lib/udev/scsi_id -g -u -d /dev/%n" prio_callout "/sbin/mpath_prio_emc
/dev/%n" hardware_handler "1
emc" features "1
queue_if_no_path" # failback 15 # rr_weight priorities no_path_retry 300 path_checker emc_clarion failback immediate # rr_min_io 100 product_blacklist LUN_Z } } multipaths { multipath { wwid 360060160174026008cf8cef961cde011 alias NPCD } multipath { wwid
36006016017402600f2ed610b62cde011 alias NDO } multipath { wwid 360060160174026000c984cc67acde011 alias NAGIOS } } And here is the result of a multipath -ll : sdg: checker msg is "directio checker reports path is
down" sdm: checker msg is "directio checker reports path is
down" NDO (36006016017402600f2ed610b62cde011) dm-8 DGC ,RAID
5 [size=50G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=2][active] \_ 2:0:0:1 sdd 8:48 [active][ready] \_ 5:0:0:1 sdj 8:144 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 2:0:1:1 sdg 8:96 [active][faulty] \_ 5:0:1:1 sdm 8:192 [active][faulty] sde: checker msg is "directio checker reports path is
down" sdk: checker msg is "directio checker reports path is
down" NAGIOS (360060160174026000c984cc67acde011) dm-6 DGC
,RAID 5 [size=40G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=2][active] \_ 2:0:1:2 sdh 8:112 [active][ready] \_ 5:0:1:2 sdn 8:208 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 2:0:0:2 sde 8:64 [active][faulty] \_ 5:0:0:2 sdk 8:160 [active][faulty] sdc: checker msg is "directio checker reports path is
down" sdi: checker msg is "directio checker reports path is
down" NPCD (360060160174026008cf8cef961cde011) dm-7 DGC ,RAID
5 [size=100G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=2][active] \_ 2:0:1:0 sdf 8:80 [active][ready] \_ 5:0:1:0 sdl 8:176 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 2:0:0:0 sdc 8:32 [active][faulty] \_ 5:0:0:0 sdi 8:128 [active][faulty] So when trying to write on a virtual device
/dev/mapper/NAGIOS (for exemple) I see many I/O errors on 'faulty disks'. When
tresspassing LUNs on the clariion, I see ready disks becoming faulty and faulty
ones becoming ready ... I also have udevd (udev-work) burning my CPUs while
trying to rename '/dev/disk/by-id/wwn-0xetcetc...udev-tmp' What's wrong with my config ? Am I missing something ? Thx by advance for your help, Regards, Cordialement, -- Stéphane Neveu Ingénieur Opensource / RedHat
Technical Manager THALES - Critical Information
Systems DIVISION Security Solutions
& Services / Server Mgmt Tél 01 73 17 03 15 -- |
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