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List: sun-managers
Subject: Couple of questions regarding powerpath
From: Dariusz Dolecki <dariusz.dolecki () gmail ! com>
Date: 2012-07-05 13:12:46
Message-ID: CAFJLB9t58S2JPV-MaCXQU577QkG7j2bJg+bW-3BzMcoLDJnK3g () mail ! gmail ! com
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I noticed something weird in the current setup we have (without additional
lun's being added), please look at this output:
root@cmdprod1 # powermt display dev=all
Pseudo name=emcpower3a
CLARiiON ID=APM00040305051 [CMDB]
Logical device ID=
600601606F1113001ADDE617EE28DD11 [LUN 48]
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats
---
### HW Path I/O Paths Interf. Mode State Q-IOs
Errors
==============================================================================
2304 pci@9/fibre-channel@1 c2t0d3s0 SP A0 active alive
0 0
2304 pci@9/fibre-channel@1 c2t1d3s0 SP A2 active alive
0 0
Pseudo name=emcpower1a
CLARiiON ID=APM00040305051 [CMDB]
Logical device ID=600601606F111300400FF3B94083D911 [LUN 27]
state=alive; policy=CLAROpt; priority=0; queued-IOs=3
Owner: default=SP A, current=SP A
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats
---
### HW Path I/O Paths Interf. Mode State Q-IOs
Errors
==============================================================================
2304 pci@9/fibre-channel@1 c2t0d1s0 SP A0 active alive
1 0
2304 pci@9/fibre-channel@1 c2t1d1s0 SP A2 active alive
2 0
Pseudo name=emcpower2a
CLARiiON ID=APM00040305051 [CMDB]
Logical device ID=600601606F111300B61D69274C83D911 [LUN 29]
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats
---
### HW Path I/O Paths Interf. Mode State Q-IOs
Errors
==============================================================================
2304 pci@9/fibre-channel@1 c2t0d2s0 SP A0 active alive
0 0
2304 pci@9/fibre-channel@1 c2t1d2s0 SP A2 active alive
0 0
Pseudo name=emcpower0a
CLARiiON ID=APM00040305051 [CMDB]
Logical device ID=600601606F111300D2F3CA082D7CD911 [LUN 26]
state=alive; policy=CLAROpt; priority=0; queued-IOs=19
Owner: default=SP A, current=SP A
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats
---
### HW Path I/O Paths Interf. Mode State Q-IOs
Errors
==============================================================================
2304 pci@9/fibre-channel@1 c2t0d0s0 SP A0 active alive
11 0
2304 pci@9/fibre-channel@1 c2t1d0s0 SP A2 active alive
8 0
2304 pci@9/fibre-channel@1 c2t2d0s0 SP B1 active alive
0 0
root@cmdprod1 # df -kh
Filesystem size used avail capacity Mounted on
/dev/dsk/c1t0d0s0 52G 18G 33G 35% /
/proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
fd 0K 0K 0K 0% /dev/fd
swap 13G 176K 13G 1% /var/run
swap 13G 28M 13G 1% /tmp
/dev/dsk/emcpower0a 394G 329G 62G 85% /data5
/dev/dsk/c1t2d0s0 67G 15G 51G 23% /data1
/dev/dsk/emcpower1a 394G 358G 32G 92% /data6
/dev/dsk/c1t5d0s0 67G 1.0G 66G 2% /data4
/dev/dsk/c2t1d3s6 1.3T 752G 576G 57% /data8
/dev/dsk/c1t3d0s0 67G 2.0G 65G 4% /data2
/dev/dsk/emcpower2a 131G 115G 15G 89% /data7
root@cmdprod1 # format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100000c50f98025,0
1. c1t1d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100000c50f97c5c,0
2. c1t2d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100000c50f97d72,0
3. c1t3d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100000c50f978cd,0
4. c1t4d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w500000e010286f01,0
5. c1t5d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
/pci@8,600000/SUNW,qlc@2/fp@0,0/ssd@w2100000c50f9791c,0
6. c2t0d0 <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pci@9,600000/fibre-channel@1/sd@0,0
7. c2t0d1 <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pci@9,600000/fibre-channel@1/sd@0,1
8. c2t0d2 <DGC-RAID1-0207 cyl 65533 alt 2 hd 32 sec 133>
/pci@9,600000/fibre-channel@1/sd@0,2
9. c2t0d3 <DGC RAID 5 0219 a7bb5880>
/pci@9,600000/fibre-channel@1/sd@0,3
10. c2t1d0 <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pci@9,600000/fibre-channel@1/sd@1,0
11. c2t1d1 <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pci@9,600000/fibre-channel@1/sd@1,1
12. c2t1d2 <DGC-RAID1-0207 cyl 65533 alt 2 hd 32 sec 133>
/pci@9,600000/fibre-channel@1/sd@1,2
13. c2t1d3 <DGC RAID 5 0219 a7bb5880>
/pci@9,600000/fibre-channel@1/sd@1,3
14. c2t2d0 <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pci@9,600000/fibre-channel@1/sd@2,0
15. emcpower0a <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pseudo/emcp@0
16. emcpower1a <DGC-RAID5-0207 cyl 65533 alt 2 hd 16 sec 801>
/pseudo/emcp@1
17. emcpower2a <DGC-RAID1-0207 cyl 65533 alt 2 hd 32 sec 133>
/pseudo/emcp@2
18. emcpower3a <DGC RAID 5 0219 a7bb5880>
/pseudo/emcp@3
Specify disk (enter its number): ^C^D
root@cmdprod1 # df -kh
Filesystem size used avail capacity Mounted on
/dev/dsk/c1t0d0s0 52G 18G 33G 35% /
/proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
fd 0K 0K 0K 0% /dev/fd
swap 13G 176K 13G 1% /var/run
swap 13G 28M 13G 1% /tmp
/dev/dsk/emcpower0a 394G 329G 62G 85% /data5
/dev/dsk/c1t2d0s0 67G 15G 51G 23% /data1
/dev/dsk/emcpower1a 394G 358G 32G 92% /data6
/dev/dsk/c1t5d0s0 67G 1.0G 66G 2% /data4
/dev/dsk/c2t1d3s6 1.3T 752G 576G 57% /data8
/dev/dsk/c1t3d0s0 67G 2.0G 65G 4% /data2
/dev/dsk/emcpower2a 131G 115G 15G 89% /data7
root@cmdprod1 #
Question#1) /data8 seems to be mounted on ONLY one path, should not /data8
be mounted on /dev/dsk/emcpower3a ?
Questions#2) When the SAN admin assigns LUN's and I do a cfgadm -al,
devfsadm -v, powermt config, *how do I partition the powerpath disk*, I am
assuming I will see something like: 19. emcpower4a, should I go ahead and
partition that using format
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