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UXMON: SY1_log2_disk_001 – Only one path detected, no path redundancy

Also see:
UXMON: mpathb – Only one path detected, no path redundancy
UXMON: volumegroup – Only one path detected, no path redundancy

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Node : linux.setaoffice.com
Node Type : Intel/AMD x64(HTTPS)
Severity : major
OM Server Time: 2017-12-11 03:28:31
Message : UXMON: SY1_log2_disk_001 – Only one path detected, no path redundancy
Msg Group : OS
Application : mpmon
Object : mp
Event Type :
not_found

Instance Name :
not_found

Instruction : The multipathd -k”show map $device topology” command shows more details

Please check /var/opt/OV/log/OpC/mp_mon.log for more details
EventDataSource :

When running a LVM command it is showing that several PVs are duplicate.

root@linux:~ # pvs
Found duplicate PV s3zEE42awIhydJ05hfUzJulPsN8WS266: using /dev/mapper/SY1_disknew_001 not /dev/sdbm
Using duplicate PV /dev/mapper/SY1_disknew_001 from subsystem DM, replacing /dev/sdbm
Found duplicate PV zTZlnwYgW69xzUcTi0riu5euTPiWWnRs: using /dev/mapper/swap_disk_001p1 not /dev/sdbo1
Using duplicate PV /dev/mapper/swap_disk_001p1 from subsystem DM, ignoring /dev/sdbo1
Found duplicate PV hnuWyziFeXRhJ71YpLJX1cLAjOvgtl0q: using /dev/mapper/SCR_DATA_disk_001p1 not /dev/sdbn1
Using duplicate PV /dev/mapper/SCR_DATA_disk_001p1 from subsystem DM, replacing /dev/sdbn1
Found duplicate PV EeqL0LDdMohfnagni16NlRUig3eugbap: using /dev/mapper/SY1_log2_disk_001p1 not /dev/sdbp1
Using duplicate PV /dev/mapper/SY1_log2_disk_001p1 from subsystem DM, ignoring /dev/sdbp1
Found duplicate PV sMAYQABFedTStD589d5ZcDu1ZNtXfXyh: using /dev/mapper/SY1_log1_disk_001p1 not /dev/sdbq1
Using duplicate PV /dev/mapper/SY1_log1_disk_001p1 from subsystem DM, ignoring /dev/sdbq1
Found duplicate PV qFBDDPa7FtN7F97tpUDeKv0cBO94WBr3: using /dev/mapper/SCR_disk_002 not /dev/sdbr
Using duplicate PV /dev/mapper/SCR_disk_002 from subsystem DM, ignoring /dev/sdbr
Found duplicate PV RZvwCnQn48G2A9IifNOLZT9l9ZYdE7yu: using /dev/mapper/SY1_arch_disk_001p1 not /dev/sdbs1
Using duplicate PV /dev/mapper/SY1_arch_disk_001p1 from subsystem DM, ignoring /dev/sdbs1
Found duplicate PV qWPh0v3E1ADowxUuuC8kP8BFJ1bwBsmL: using /dev/mapper/SY1_disk_001p1 not /dev/sdbt1
Using duplicate PV /dev/mapper/SY1_disk_001p1 from subsystem DM, ignoring /dev/sdbt1
Found duplicate PV hi5F4g9FPojaD9J7KH5vHCzRKgd4jQfJ: using /dev/mapper/MR2_log2_disk_001p1 not /dev/sdbu1
Using duplicate PV /dev/mapper/MR2_log2_disk_001p1 from subsystem DM, ignoring /dev/sdbu1
Found duplicate PV KA1AkbCOgfHFGuKazmHAacwqBNPmEyV8: using /dev/mapper/MR2_log1_disk_001p1 not /dev/sdbv1
Using duplicate PV /dev/mapper/MR2_log1_disk_001p1 from subsystem DM, ignoring /dev/sdbv1
Found duplicate PV dy0YaJoSrlZdTM9isfY1QGS6kWBTzs6i: using /dev/mapper/MR2_data_disk_001p1 not /dev/sdbw1
Using duplicate PV /dev/mapper/MR2_data_disk_001p1 from subsystem DM, ignoring /dev/sdbw1
Found duplicate PV khSEnsJ9CC4epw0uOAsaFwlbIKS32Qyj: using /dev/mapper/MR2_arch_disk_001p1 not /dev/sdbx1
Using duplicate PV /dev/mapper/MR2_arch_disk_001p1 from subsystem DM, ignoring /dev/sdbx1
Found duplicate PV PmTTDGWvEvDM8AMUHvqcoRJeA9g4r78D: using /dev/mapper/MRC_log2_disk_001p1 not /dev/sdbi1
Using duplicate PV /dev/mapper/MRC_log2_disk_001p1 from subsystem DM, ignoring /dev/sdbi1
Found duplicate PV ffv1TgDxRIEIyhRoEh46fMGeFuJ1tVtv: using /dev/mapper/MR2_disk_001p1 not /dev/sdby1
Using duplicate PV /dev/mapper/MR2_disk_001p1 from subsystem DM, ignoring /dev/sdby1
Found duplicate PV tCeMdOB1dFuJomhgB061M7MeZNEwptk3: using /dev/mapper/MRC_log1_disk_001p1 not /dev/sdbj1
Using duplicate PV /dev/mapper/MRC_log1_disk_001p1 from subsystem DM, ignoring /dev/sdbj1
Found duplicate PV inuuS3f39VjSuh6q7r5pEZSjzRgRhi5e: using /dev/mapper/sap_disk_001p1 not /dev/sdbz1
Using duplicate PV /dev/mapper/sap_disk_001p1 from subsystem DM, ignoring /dev/sdbz1
Found duplicate PV Ea4CVYCMjYc3eE129uYlUlZKdzhmYNpQ: using /dev/mapper/MRC_data_disk_001p1 not /dev/sdbk1
Using duplicate PV /dev/mapper/MRC_data_disk_001p1 from subsystem DM, ignoring /dev/sdbk1
Found duplicate PV Lx5viH3geNo0zSO07sHcbNlJ9nVmcGPA: using /dev/mapper/MRC_arch_disk_001p1 not /dev/sdbl1
Using duplicate PV /dev/mapper/MRC_arch_disk_001p1 from subsystem DM, ignoring /dev/sdbl1
PV VG Fmt Attr PSize PFree
/dev/mapper/MR2_arch_disk_001p1 vgMR2oraarch lvm2 a–u 19.98g 0
/dev/mapper/MR2_data_disk_001p1 vgMR2data lvm2 a–u 299.98g 99.98g
/dev/mapper/MR2_disk_001p1 vgMR2 lvm2 a–u 99.98g 20.87g
/dev/mapper/MR2_log1_disk_001p1 vgMR2log1 lvm2 a–u 9.98g 7.98g
/dev/mapper/MR2_log2_disk_001p1 vgMR2log2 lvm2 a–u 9.98g 7.98g
/dev/mapper/MRC_arch_disk_001p1 vgMRCoraarch lvm2 a–u 19.98g 0
/dev/mapper/MRC_data_disk_001p1 vgMRCdata lvm2 a–u 299.98g 39.98g
/dev/mapper/MRC_disk_002 vgMRC lvm2 a–u 149.98g 31.88g
/dev/mapper/MRC_log1_disk_001p1 vgMRClog1 lvm2 a–u 9.98g 7.98g
/dev/mapper/MRC_log2_disk_001p1 vgMRClog2 lvm2 a–u 9.98g 7.98g
/dev/mapper/SCR_ARCH_disk_001p1 vgSCRarch lvm2 a–u 29.96g 4.57g
/dev/mapper/SCR_DATA_disk_001p1 vgSCRdata lvm2 a–u 109.96g 8.40g
/dev/mapper/SCR_LOG1_disk_001p1 vgSCRlog1 lvm2 a–u 4.96g 984.00m
/dev/mapper/SCR_LOG2_disk_001p1 vgSCRlog2 lvm2 a–u 4.96g 984.00m
/dev/mapper/SCR_disk_001p1 vgSCR lvm2 a–u 49.96g 3.96g
/dev/mapper/SCR_disk_002 vgSCR lvm2 a–u 49.98g 34.98g
/dev/mapper/SY1_arch_disk_001p1 vgSY1oraarch lvm2 a–u 149.98g 0
/dev/mapper/SY1_data_disk_002 vgSY1data lvm2 a–u 2.64t 0
/dev/mapper/SY1_disk_001p1 vgSY1 lvm2 a–u 49.98g 10.52g
/dev/mapper/SY1_disknew_001 vgSY1 lvm2 a–u 59.98g 44.98g
/dev/mapper/SY1_interf_disk_001 vgSY1interface lvm2 a–u 49.98g 1008.00m
/dev/mapper/SY1_log1_disk_001p1 vgSY1log1 lvm2 a–u 19.98g 9.98g
/dev/mapper/SY1_log2_disk_001p1 vgSY1log2 lvm2 a–u 19.98g 9.98g
/dev/mapper/sap_disk_001p1 vgSAPlocal lvm2 a–u 49.98g 4.79g
/dev/mapper/swap_disk_001p1 vgswap lvm2 a–u 223.98g 0
/dev/sda2 vgroot lvm2 a–u 278.86g 198.27g

Removing disk paths that are duplicate

echo 1 > /sys/block/sdbm/device/delete
echo 1 > /sys/block/sdbo/device/delete
echo 1 > /sys/block/sdbn/device/delete
echo 1 > /sys/block/sdbp/device/delete
echo 1 > /sys/block/sdbq/device/delete
echo 1 > /sys/block/sdbr/device/delete
echo 1 > /sys/block/sdbs/device/delete
echo 1 > /sys/block/sdbt/device/delete
echo 1 > /sys/block/sdbu/device/delete
echo 1 > /sys/block/sdbv/device/delete
echo 1 > /sys/block/sdbw/device/delete
echo 1 > /sys/block/sdbx/device/delete
echo 1 > /sys/block/sdbi/device/delete
echo 1 > /sys/block/sdby/device/delete
echo 1 > /sys/block/sdbj/device/delete
echo 1 > /sys/block/sdbz/device/delete

Checking status

root@linux:~ # pvs
PV VG Fmt Attr PSize PFree
/dev/mapper/MR2_arch_disk_001p1 vgMR2oraarch lvm2 a–u 19.98g 0
/dev/mapper/MR2_data_disk_001p1 vgMR2data lvm2 a–u 299.98g 99.98g
/dev/mapper/MR2_disk_001p1 vgMR2 lvm2 a–u 99.98g 20.87g
/dev/mapper/MR2_log1_disk_001p1 vgMR2log1 lvm2 a–u 9.98g 7.98g
/dev/mapper/MR2_log2_disk_001p1 vgMR2log2 lvm2 a–u 9.98g 7.98g
/dev/mapper/MRC_arch_disk_001p1 vgMRCoraarch lvm2 a–u 19.98g 0
/dev/mapper/MRC_data_disk_001p1 vgMRCdata lvm2 a–u 299.98g 39.98g
/dev/mapper/MRC_disk_002 vgMRC lvm2 a–u 149.98g 31.88g
/dev/mapper/MRC_log1_disk_001p1 vgMRClog1 lvm2 a–u 9.98g 7.98g
/dev/mapper/MRC_log2_disk_001p1 vgMRClog2 lvm2 a–u 9.98g 7.98g
/dev/mapper/SCR_ARCH_disk_001p1 vgSCRarch lvm2 a–u 29.96g 4.57g
/dev/mapper/SCR_DATA_disk_001p1 vgSCRdata lvm2 a–u 109.96g 8.40g
/dev/mapper/SCR_LOG1_disk_001p1 vgSCRlog1 lvm2 a–u 4.96g 984.00m
/dev/mapper/SCR_LOG2_disk_001p1 vgSCRlog2 lvm2 a–u 4.96g 984.00m
/dev/mapper/SCR_disk_001p1 vgSCR lvm2 a–u 49.96g 3.96g
/dev/mapper/SCR_disk_002 vgSCR lvm2 a–u 49.98g 34.98g
/dev/mapper/SY1_arch_disk_001p1 vgSY1oraarch lvm2 a–u 149.98g 0
/dev/mapper/SY1_data_disk_002 vgSY1data lvm2 a–u 2.64t 0
/dev/mapper/SY1_disk_001p1 vgSY1 lvm2 a–u 49.98g 10.52g
/dev/mapper/SY1_disknew_001 vgSY1 lvm2 a–u 59.98g 44.98g
/dev/mapper/SY1_interf_disk_001 vgSY1interface lvm2 a–u 49.98g 1008.00m
/dev/mapper/SY1_log1_disk_001p1 vgSY1log1 lvm2 a–u 19.98g 9.98g
/dev/mapper/SY1_log2_disk_001p1 vgSY1log2 lvm2 a–u 19.98g 9.98g
/dev/mapper/sap_disk_001p1 vgSAPlocal lvm2 a–u 49.98g 4.79g
/dev/mapper/swap_disk_001p1 vgswap lvm2 a–u 223.98g 0
/dev/sda2 vgroot lvm2 a–u 278.86g 198.27g

Checking multipath devices. Some devices have only one path

root@linux:~ # multipath -ll
SCR_disk_001 (350002acb5a22374a) dm-26 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:21 sdy 65:128 active ready running
`- 1:0:0:21 sdcb 68:240 active ready running
SY1_log2_disk_001 (350002ac17cd5374a) dm-6 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:6 sdi 8:128 active ready running
MRC_arch_disk_001 (350002ac15504374a) dm-3 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:3 sdf 8:80 active ready running
MR2_data_disk_001 (350002ac17cd8374a) dm-14 3PARdata,VV
size=300G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:13 sdp 8:240 active ready running
MR2_disk_001 (350002ac17cd6374a) dm-18 3PARdata,VV
size=100G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:15 sds 65:32 active ready running
SY1_log1_disk_001 (350002ac17cd4374a) dm-7 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:7 sdj 8:144 active ready running
MR2_log2_disk_001 (350002ac17ce7374a) dm-11 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:11 sdn 8:208 active ready running
MRC_disk_002 (350002ac2904a374a) dm-32 3PARdata,VV
size=150G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:23 sdaa 65:160 active ready running
`- 1:0:0:23 sdcd 69:16 active ready running
SCR_ARCH_disk_001 (350002acb5a2c374a) dm-16 3PARdata,VV
size=30G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:17 sdu 65:64 active ready running
`- 1:0:0:17 sdca 68:224 active ready running
MR2_log1_disk_001 (350002ac17ce5374a) dm-12 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:12 sdo 8:224 active ready running
SY1_arch_disk_001 (350002ac17cca374a) dm-9 3PARdata,VV
size=150G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:9 sdl 8:176 active ready running
SY1_disknew_001 (350002ac4c566374a) dm-4 3PARdata,VV
size=60G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:4 sdg 8:96 active ready running
SCR_LOG2_disk_001 (350002acb5a39374a) dm-17 3PARdata,VV
size=5.0G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:18 sdv 65:80 active ready running
`- 1:0:0:18 sdq 65:0 active ready running
MR2_arch_disk_001 (350002ac17cd7374a) dm-15 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:14 sdr 65:16 active ready running
SCR_LOG1_disk_001 (350002acb5a38374a) dm-19 3PARdata,VV
size=5.0G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:19 sdw 65:96 active ready running
`- 1:0:0:19 sdav 66:240 active ready running
MRC_data_disk_001 (350002ac15505374a) dm-2 3PARdata,VV
size=300G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:2 sde 8:64 active ready running
sap_disk_001 (350002ac1fc92374a) dm-13 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:16 sdt 65:48 active ready running
SY1_disk_001 (350002ac17cbd374a) dm-10 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:10 sdm 8:192 active ready running
SY1_interf_disk_001 (350002ac0ce50374a) dm-33 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:24 sdab 65:176 active ready running
`- 1:0:0:24 sdce 69:32 active ready running
MRC_log2_disk_001 (350002ac1551a374a) dm-71 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:0 sdc 8:32 active ready running
SY1_data_disk_002 (350002ac23826374a) dm-31 3PARdata,VV
size=2.6T features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:22 sdz 65:144 active ready running
`- 1:0:0:22 sdcc 69:0 active ready running
MRC_log1_disk_001 (350002ac15519374a) dm-72 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:1 sdd 8:48 active ready running
SCR_DATA_disk_001 (350002acb5a37374a) dm-23 3PARdata,VV
size=110G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:20 sdx 65:112 active ready running
SCR_disk_002 (350002ac19e73374a) dm-8 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:8 sdk 8:160 active ready running
swap_disk_001 (350002ac155d0374a) dm-5 3PARdata,VV
size=224G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
`- 0:0:0:5 sdh 8:112 active ready running

Recognize new LUNs and run multipath -v3

root@linux:~ # systool -av -c fc_host | grep “Class Device =” | awk -F’=’ {‘print $2’} | awk -F'”‘ {‘print “echo \”- – -\” > /sys/class/scsi_host/”$2″/scan”‘} | sh
root@linux:~ # multipath -v3

Paths restored

root@linux:~ # multipath -ll
SCR_disk_001 (350002acb5a22374a) dm-26 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:21 sdy 65:128 active ready running
`- 1:0:0:21 sdcb 68:240 active ready running
SY1_log2_disk_001 (350002ac17cd5374a) dm-6 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:6 sdi 8:128 active ready running
`- 1:0:0:6 sdai 66:32 active ready running
MRC_arch_disk_001 (350002ac15504374a) dm-3 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:3 sdf 8:80 active ready running
`- 1:0:0:3 sdaf 65:240 active ready running
MR2_data_disk_001 (350002ac17cd8374a) dm-14 3PARdata,VV
size=300G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:13 sdp 8:240 active ready running
`- 1:0:0:13 sdap 66:144 active ready running
MR2_disk_001 (350002ac17cd6374a) dm-18 3PARdata,VV
size=100G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:15 sds 65:32 active ready running
`- 1:0:0:15 sdar 66:176 active ready running
SY1_log1_disk_001 (350002ac17cd4374a) dm-7 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:7 sdj 8:144 active ready running
`- 1:0:0:7 sdaj 66:48 active ready running
MR2_log2_disk_001 (350002ac17ce7374a) dm-11 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:11 sdn 8:208 active ready running
`- 1:0:0:11 sdan 66:112 active ready running
MRC_disk_002 (350002ac2904a374a) dm-32 3PARdata,VV
size=150G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:23 sdaa 65:160 active ready running
`- 1:0:0:23 sdcd 69:16 active ready running
SCR_ARCH_disk_001 (350002acb5a2c374a) dm-16 3PARdata,VV
size=30G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:17 sdu 65:64 active ready running
`- 1:0:0:17 sdca 68:224 active ready running
MR2_log1_disk_001 (350002ac17ce5374a) dm-12 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:12 sdo 8:224 active ready running
`- 1:0:0:12 sdao 66:128 active ready running
SY1_arch_disk_001 (350002ac17cca374a) dm-9 3PARdata,VV
size=150G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:9 sdl 8:176 active ready running
`- 1:0:0:9 sdal 66:80 active ready running
SY1_disknew_001 (350002ac4c566374a) dm-4 3PARdata,VV
size=60G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:4 sdg 8:96 active ready running
`- 1:0:0:4 sdag 66:0 active ready running
SCR_LOG2_disk_001 (350002acb5a39374a) dm-17 3PARdata,VV
size=5.0G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:18 sdv 65:80 active ready running
`- 1:0:0:18 sdq 65:0 active ready running
MR2_arch_disk_001 (350002ac17cd7374a) dm-15 3PARdata,VV
size=20G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:14 sdr 65:16 active ready running
`- 1:0:0:14 sdaq 66:160 active ready running
SCR_LOG1_disk_001 (350002acb5a38374a) dm-19 3PARdata,VV
size=5.0G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:19 sdw 65:96 active ready running
`- 1:0:0:19 sdav 66:240 active ready running
MRC_data_disk_001 (350002ac15505374a) dm-2 3PARdata,VV
size=300G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:2 sde 8:64 active ready running
`- 1:0:0:2 sdae 65:224 active ready running
sap_disk_001 (350002ac1fc92374a) dm-13 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:16 sdt 65:48 active ready running
`- 1:0:0:16 sdas 66:192 active ready running
SY1_disk_001 (350002ac17cbd374a) dm-10 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:10 sdm 8:192 active ready running
`- 1:0:0:10 sdam 66:96 active ready running
SY1_interf_disk_001 (350002ac0ce50374a) dm-33 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:24 sdab 65:176 active ready running
`- 1:0:0:24 sdce 69:32 active ready running
MRC_log2_disk_001 (350002ac1551a374a) dm-71 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:0 sdc 8:32 active ready running
`- 1:0:0:0 sdac 65:192 active ready running
SY1_data_disk_002 (350002ac23826374a) dm-31 3PARdata,VV
size=2.6T features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:22 sdz 65:144 active ready running
`- 1:0:0:22 sdcc 69:0 active ready running
MRC_log1_disk_001 (350002ac15519374a) dm-72 3PARdata,VV
size=10G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:1 sdd 8:48 active ready running
`- 1:0:0:1 sdad 65:208 active ready running
SCR_DATA_disk_001 (350002acb5a37374a) dm-23 3PARdata,VV
size=110G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:20 sdx 65:112 active ready running
`- 1:0:0:20 sdat 66:208 active ready running
SCR_disk_002 (350002ac19e73374a) dm-8 3PARdata,VV
size=50G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:8 sdk 8:160 active ready running
`- 1:0:0:8 sdak 66:64 active ready running
swap_disk_001 (350002ac155d0374a) dm-5 3PARdata,VV
size=224G features=’0′ hwhandler=’0′ wp=rw
`-+- policy=’round-robin 0′ prio=1 status=active
|- 0:0:0:5 sdh 8:112 active ready running
`- 1:0:0:5 sdah 66:16 active ready running

Problem solved

root@linux:~ # /var/opt/OV/bin/instrumentation/UXMONbroker -check mpmon
Fri Dec 15 11:39:25 2017 : INFO : UXMONmpmon is running now, pid=52191
mv: `/dev/null’ and `/dev/null’ are the same file
Fri Dec 15 11:39:26 2017 : INFO : UXMONmpmon end, pid=52191

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