Newly presented EMC DMX LUNs are not reported by "symcfg list" until a scan is issued by the O/S
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Article ID: 100001970
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Updated On:
Resolution
The following EMC SYMDEV lun (031a,031c and 0319) references are presented to the server.
The "symcfg list" lun count won't increase until a device scan is done against the HBA to force the O/S to discover newly presented LUNs.
The following example is based on a RedHat environment:
# uname-a
Linux fred 2.6.18-92.el5 #1 SMP Tue Apr 29 13:16:15 EDT 2008 x86_64x86_64 x86_64 GNU/Linux
# cat /etc/*release
RedHat Enterprise Linux Server release 5.2 (Tikanga)
# rpm -qa | grep -i VRTSvxvm
VRTSvxvm-platform-5.0.40.00-MP4_RHEL5
VRTSvxvm-common-5.0.40.00-MP4_RHEL5
# symcfg discover
This operation may take up to a few minutes. Please be patient...
# symcfg list
SY M M E T R IX
Mcode Cache Num Phys NumSymm
SymmID Attachment Model Version Size(MB) Devices Devices
000290300822Local DMX4-6 5773 8192 2 606
000290301414Remote DMX4-6 5773 8192 0 220
# echo "- - -" >/sys/class/scsi_host/host1/scan
# symcfg discover
This operation may take up to a few minutes. Please be patient...
# symcfg list
SY M M E T R IX
Mcode Cache Num Phys NumSymm
SymmID Attachment Model Version Size(MB) Devices Devices
000290300822Local DMX4-6 5773 8192 8 606
000290301414Remote DMX4-6 5773 8192 0 220
# vxdisk scandisks
# vxdisk -e list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
disk_0 auto:none - - online invalid sdb -
disk_1 auto:none - - online invalid sda -
emc_clariion0_192auto - - error sdn lunRAID_5
emc_clariion0_193 auto - - error sds lunRAID_5
emc_clariion0_194 auto - - error sdl lunRAID_5
emc_clariion0_195 auto - - error sde lunRAID_5
emc_clariion0_196 auto - - error sdd lunRAID_5
emc_clariion0_197 auto - - error sdo lunRAID_5
emc0_031a auto:cdsdisk - - online sdag std
emc0_031c auto:cdsdisk - - onlineclone_disk sdah bcv
emc0_0319 auto:cdsdisk - - online sdaf std
REVISED EMC SYMINQ OUTPUT
# syminq
Device Product Device
---------------- ------------------------------------------------
Name Type Vendor ID Rev SerNum Cap (KB)
---------------- ------------------------------------------------
/dev/sda SEAGATE ST373307LC 0007 3HZA3GAY 71687372
/dev/sdb SEAGATE ST373307LC 0007 3HZA3FQB 71687372
/dev/sdc DGC RAID5 0219C50000A7 2097152
/dev/sdd DGC RAID 5 0219C40000A7 2097152
/dev/sde DGC RAID 5 0219C30000A6 2097152
/dev/sdf DGC RAID 5 0219C20000A6 2097152
/dev/sdg DGC RAID 5 0219C10000A6 2097152
/dev/sdh DGC RAID 5 0219C00000A6 2097152
/dev/sdi DGC RAID 5 0219C50000A7 2097152
/dev/sdj DGC RAID 5 0219C40000A7 2097152
/dev/sdk DGC RAID 5 0219C30000A6 2097152
/dev/sdl DGC RAID 5 0219C20000A6 2097152
/dev/sdm DGC RAID 5 0219C10000A6 2097152
/dev/sdn DGC RAID 5 0219C00000A6 2097152
/dev/sdo DGC RAID 5 0219C50000A7 2097152
/dev/sdp DGC RAID 5 0219C40000A7 2097152
/dev/sdq DGC RAID 5 0219C30000A6 2097152
/dev/sdr DGC RAID 5 0219C20000A6 2097152
/dev/sds DGC RAID 5 0219C10000A6 2097152
/dev/sdt DGC RAID 5 0219C00000A6 2097152
/dev/sdu DGC RAID 5 0219C50000A7 2097152
/dev/sdv DGC RAID 5 0219C40000A7 2097152
/dev/sdw DGC RAID 5 0219C30000A6 2097152
/dev/sdx DGC RAID 5 0219C20000A6 2097152
/dev/sdy DGC RAID 5 0219C10000A6 2097152
/dev/sdz DGC RAID 5 0219C00000A6 2097152
/dev/sdaa GK EMC SYMMETRIX 57732200010000 2880
/dev/sdab GK EMC SYMMETRIX 57732200010000 2880
/dev/sdac EMC SYMMETRIX 57732200319000 5184000
/dev/sdad EMC SYMMETRIX 5773220031A000 5184000
/dev/sdaeBCV EMC SYMMETRIX 5773220031C000 5184000
/dev/sdaf EMC SYMMETRIX 57732200319000 5184000
/dev/sdag EMC SYMMETRIX 5773220031A000 5184000
/dev/sdahBCV EMC SYMMETRIX 5773220031C000 5184000
The newly presented EMC DMX device (6) paths are "sdac,sdad,dae,sdaf,sdag & sdah" shown in bold italics above by "syminq".
Issue/Introduction
Newly presented EMC DMX LUNs are not reported by "symcfg list" until a scan is issued by the O/S.
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