Hi,
we are using oracle 11.2.0.4.0 RAC on RHEL 6.6 .
We are using oracleasm lib for creating asm disks.
Now, we have asked storage & linux admin to add disks to server as we need more space in ASM diskgroups.
Storage team will be adding 4, 100 GB disks to server.
How to identify, which new 4 disks are added by linux admin.
As i see, cat /proc/partitions has huge list. there are around 373 lines, for 14 disks
so, how can we come to know which are newly added disks.
content of /proc/partition
cat /proc/partitions
major minor #blocks name
8 16 2637162264 sdb
8 17 2637161472 sdb1
8 0 879054616 sda
8 1 1048576 sda1
8 2 878004224 sda2
8 32 52428800 sdc
8 48 52428800 sdd
8 49 52428784 sdd1
8 64 52428800 sde
8 80 52428800 sdf
8 112 10485760 sdh
8 96 52428800 sdg
8 128 10485760 sdi
8 129 10485744 sdi1
8 176 10485760 sdl
8 160 10485760 sdk
8 161 10485744 sdk1
8 144 10485760 sdj
8 192 10485760 sdm
8 193 10485744 sdm1
8 208 10485760 sdn
8 224 10485760 sdo
8 225 10485744 sdo1
8 240 10485760 sdp
65 0 10485760 sdq
65 32 104857600 sds
65 33 104856223 sds1
65 16 10485760 sdr
65 48 104857600 sdt
65 49 104856223 sdt1
65 64 104857600 sdu
65 65 104856223 sdu1
65 80 104857600 sdv
65 81 104856223 sdv1
65 112 104857600 sdx
65 113 104856223 sdx1
65 128 104857600 sdy
65 129 104856223 sdy1
65 96 104857600 sdw
65 97 104856223 sdw1
65 160 104857600 sdaa
65 161 104856223 sdaa1
65 176 104857600 sdab
65 177 104856223 sdab1
65 144 104857600 sdz
65 145 104856223 sdz1
65 192 52428800 sdac
65 224 52428800 sdae
65 240 52428800 sdaf
66 0 52428800 sdag
66 16 10485760 sdah
66 80 10485760 sdal
66 48 10485760 sdaj
66 112 10485760 sdan
66 144 10485760 sdap
66 160 10485760 sdaq
66 176 10485760 sdar
66 192 104857600 sdas
66 193 104856223 sdas1
66 64 10485760 sdak
66 65 10485744 sdak1
66 240 104857600 sdav
66 241 104856223 sdav1
67 64 104857600 sdba
67 65 104856223 sdba1
67 80 104857600 sdbb
67 81 104856223 sdbb1
66 208 104857600 sdat
66 209 104856223 sdat1
66 128 10485760 sdao
66 129 10485744 sdao1
67 16 104857600 sdax
67 17 104856223 sdax1
67 48 104857600 sdaz
67 49 104856223 sdaz1
65 208 52428800 sdad
65 209 52428784 sdad1
68 112 52428800 sdbt
68 113 52428784 sdbt1
68 96 52428800 sdbs
68 128 52428800 sdbu
68 144 52428800 sdbv
67 96 5760 sdbc
68 160 52428800 sdbw
67 32 104857600 sday
67 33 104856223 sday1
67 112 5760 sdbd
68 176 10485760 sdbx
67 144 5760 sdbf
68 208 10485760 sdbz
67 160 5760 sdbg
68 240 10485760 sdcb
67 128 5760 sdbe
68 224 10485760 sdca
68 225 10485744 sdca1
67 176 5760 sdbh
69 16 10485760 sdcd
69 48 10485760 sdcf
69 64 10485760 sdcg
67 208 5760 sdbj
67 224 5760 sdbk
69 80 10485760 sdch
67 240 5760 sdbl
68 0 5760 sdbm
66 224 104857600 sdau
66 225 104856223 sdau1
68 48 5760 sdbp
69 96 104857600 sdci
69 97 104856223 sdci1
69 112 104857600 sdcj
69 113 104856223 sdcj1
68 80 5760 sdbr
69 32 10485760 sdce
69 33 10485744 sdce1
67 192 5760 sdbi
69 128 104857600 sdck
69 129 104856223 sdck1
69 144 104857600 sdcl
69 145 104856223 sdcl1
68 64 5760 sdbq
68 16 5760 sdbn
69 176 104857600 sdcn
69 177 104856223 sdcn1
69 192 104857600 sdco
69 193 104856223 sdco1
69 240 104857600 sdcr
69 241 104856223 sdcr1
70 0 52428800 sdcs
68 32 5760 sdbo
69 224 104857600 sdcq
69 225 104856223 sdcq1
70 16 52428800 sdct
70 17 52428784 sdct1
69 208 104857600 sdcp
69 209 104856223 sdcp1
70 32 52428800 sdcu
70 112 10485760 sdcz
70 128 10485760 sdda
70 129 10485744 sdda1
70 80 10485760 sdcx
70 48 52428800 sdcv
70 192 10485760 sdde
70 193 10485744 sdde1
70 176 10485760 sddd
70 64 52428800 sdcw
70 208 10485760 sddf
70 144 10485760 sddb
70 224 10485760 sddg
70 240 10485760 sddh
71 16 104857600 sddj
71 17 104856223 sddj1
71 32 104857600 sddk
71 33 104856223 sddk1
71 112 104857600 sddp
71 113 104856223 sddp1
71 48 104857600 sddl
71 49 104856223 sddl1
71 0 104857600 sddi
71 1 104856223 sddi1
71 144 104857600 sddr
71 145 104856223 sddr1
71 80 104857600 sddn
71 81 104856223 sddn1
71 96 104857600 sddo
71 97 104856223 sddo1
71 128 104857600 sddq
71 129 104856223 sddq1
71 160 5760 sdds
71 176 5760 sddt
71 192 5760 sddu
71 208 5760 sddv
71 240 5760 sddx
128 16 5760 sddz
71 224 5760 sddw
128 32 5760 sdea
128 48 5760 sdeb
128 96 5760 sdee
128 80 5760 sded
128 0 5760 sddy
128 112 5760 sdef
128 160 5760 sdei
128 64 5760 sdec
128 128 5760 sdeg
128 144 5760 sdeh
69 0 10485760 sdcc
69 1 10485744 sdcc1
70 160 10485760 sddc
70 161 10485744 sddc1
66 96 10485760 sdam
66 97 10485744 sdam1
66 32 10485760 sdai
66 33 10485744 sdai1
70 96 10485760 sdcy
70 97 10485744 sdcy1
68 192 10485760 sdby
68 193 10485744 sdby1
67 0 104857600 sdaw
67 1 104856223 sdaw1
69 160 104857600 sdcm
69 161 104856223 sdcm1
71 64 104857600 sddm
71 65 104856223 sddm1
253 0 104857600 dm-0
253 1 419430400 dm-1
253 2 2637162264 dm-2
253 3 52428800 dm-3
253 4 2637161472 dm-4
253 5 52428800 dm-5
253 6 52428800 dm-6
253 7 52428784 dm-7
253 8 52428800 dm-8
253 9 10485760 dm-9
253 10 52428800 dm-10
253 11 10485760 dm-11
253 12 10485760 dm-12
253 13 10485744 dm-13
253 14 10485760 dm-14
253 15 10485760 dm-15
253 16 10485744 dm-16
253 17 10485760 dm-17
253 18 10485760 dm-18
253 19 10485744 dm-19
253 20 10485760 dm-20
253 21 10485760 dm-21
253 22 10485744 dm-22
253 23 10485760 dm-23
253 24 104857600 dm-24
253 25 10485760 dm-25
253 26 104856223 dm-26
253 27 104857600 dm-27
253 28 104857600 dm-28
253 29 104856223 dm-29
253 30 104857600 dm-30
253 31 104856223 dm-31
253 32 104857600 dm-32
253 33 104856223 dm-33
253 34 104857600 dm-34
253 35 104856223 dm-35
253 36 104857600 dm-36
253 37 104856223 dm-37
253 38 104857600 dm-38
253 39 104856223 dm-39
253 40 104857600 dm-40
253 41 104856223 dm-41
253 42 104857600 dm-42
253 43 104856223 dm-43
253 44 5760 dm-44
253 45 104856223 dm-45
253 46 5760 dm-46
253 47 5760 dm-47
253 48 5760 dm-48
253 49 5760 dm-49
253 50 5760 dm-50
253 51 5760 dm-51
253 52 5760 dm-52
253 53 5760 dm-53
253 54 5760 dm-54
253 55 5760 dm-55
253 56 5760 dm-56
253 57 5760 dm-57
253 58 5760 dm-58
253 59 5760 dm-59
253 60 5760 dm-60
253 61 5760 dm-61
253 62 1903157248 dm-62
253 63 524288000 dm-63
253 64 209715200 dm-64
128 176 52428800 sdej
128 192 52428800 sdek
128 208 52428800 sdel
128 224 52428800 sdem
128 240 52428800 sden
129 0 10485760 sdeo
129 16 10485760 sdep
129 32 10485760 sdeq
129 48 10485760 sder
129 64 10485760 sdes
129 80 10485760 sdet
129 96 10485760 sdeu
129 112 10485760 sdev
129 128 10485760 sdew
129 144 10485760 sdex
129 160 10485760 sdey
129 176 104857600 sdez
129 192 104857600 sdfa
129 208 104857600 sdfb
129 224 104857600 sdfc
129 240 104857600 sdfd
130 0 104857600 sdfe
130 16 104857600 sdff
130 32 104857600 sdfg
130 48 104857600 sdfh
130 64 104857600 sdfi
130 80 52428800 sdfj
130 112 52428800 sdfl
130 128 52428800 sdfm
130 144 52428800 sdfn
130 160 10485760 sdfo
130 192 10485760 sdfq
130 176 10485760 sdfp
130 224 10485760 sdfs
130 96 52428800 sdfk
130 208 10485760 sdfr
131 0 10485760 sdfu
131 16 10485760 sdfv
131 32 10485760 sdfw
130 240 10485760 sdft
131 48 10485760 sdfx
131 64 10485760 sdfy
131 96 104857600 sdga
131 128 104857600 sdgc
131 112 104857600 sdgb
131 80 104857600 sdfz
131 224 104857600 sdgi
131 144 104857600 sdgd
131 176 104857600 sdgf
131 192 104857600 sdgg
131 208 104857600 sdgh
131 160 104857600 sdge
131 240 52428800 sdgj
132 0 52428800 sdgk
132 16 52428800 sdgl
132 32 52428800 sdgm
132 48 52428800 sdgn
132 64 10485760 sdgo
132 80 10485760 sdgp
132 96 10485760 sdgq
132 128 10485760 sdgs
132 144 10485760 sdgt
132 160 10485760 sdgu
132 176 10485760 sdgv
132 192 10485760 sdgw
132 208 10485760 sdgx
132 224 10485760 sdgy
132 240 104857600 sdgz
133 0 104857600 sdha
133 32 104857600 sdhc
133 48 104857600 sdhd
133 16 104857600 sdhb
133 112 104857600 sdhh
133 128 104857600 sdhi
133 144 52428800 sdhj
132 112 10485760 sdgr
133 80 104857600 sdhf
133 96 104857600 sdhg
133 64 104857600 sdhe
133 160 52428800 sdhk
133 176 52428800 sdhl
133 192 52428800 sdhm
133 208 52428800 sdhn
133 224 10485760 sdho
133 240 10485760 sdhp
134 0 10485760 sdhq
134 32 10485760 sdhs
134 48 10485760 sdht
134 64 10485760 sdhu
134 80 10485760 sdhv
134 96 10485760 sdhw
134 112 10485760 sdhx
134 128 10485760 sdhy
134 144 104857600 sdhz
134 160 104857600 sdia
134 16 10485760 sdhr
134 192 104857600 sdic
134 208 104857600 sdid
135 16 104857600 sdih
135 32 104857600 sdii
134 224 104857600 sdie
135 0 104857600 sdig
134 176 104857600 sdib
134 240 104857600 sdif
Thanks in advance.