Hp StorageWorks Scalable File Share User Manual Page 46
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To see the multipath configuration, use the following command. Output will be similar to the
example shown below:
# multipath -ll
mpath7 (3600c0ff000d547b5b0c95f4801000000) dm-5 HP,MSA2212fc
[size=4.1T][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=20][active]
\_ 0:0:3:5 sdd 8:48 [active][ready]
\_ 1:0:3:5 sdh 8:112 [active][ready]
mpath6 (3600c0ff000d548aa1cca5f4801000000) dm-4 HP,MSA2212fc
[size=4.1T][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=20][active]
\_ 0:0:2:6 sdc 8:32 [active][ready]
\_ 1:0:2:6 sdg 8:96 [active][ready]
mpath5 (3600c0ff000d5455bc8c95f4801000000) dm-3 HP,MSA2212fc
[size=4.1T][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=50][active]
\_ 1:0:1:5 sdf 8:80 [active][ready]
\_ round-robin 0 [prio=10][enabled]
\_ 0:0:1:5 sdb 8:16 [active][ready]
mpath4 (3600c0ff000d5467634ca5f4801000000) dm-2 HP,MSA2212fc
[size=4.1T][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=50][active]
\_ 0:0:0:6 sda 8:0 [active][ready]
\_ round-robin 0 [prio=10][enabled]
\_ 1:0:0:6 sde 8:64 [active][ready]
In the following example, there are an MGS (node1), an MDS (node2), and only a single OSS
pair, (node3 and node4). Each OSS has four OSTs. The Lustre file system is called testfs. During
normal operation, mount the Lustre roles as follows:
node1 (Interconnect interface icnode1):
/dev/mapper/mpath1 /mnt/mgs
IMPORTANT: The MGS must use mount point "/mnt/mgs".
node2 (Interconnect interface icnode2):
/dev/mapper/mpath2 /mnt/mds
node3 (Interconnect interface icnode3):
/dev/mapper/mpath3 /mnt/ost1
/dev/mapper/mpath4 /mnt/ost2
/dev/mapper/mpath5 /mnt/ost3
/dev/mapper/mpath6 /mnt/ost4
node4 (Interconnect interface icnode4):
/dev/mapper/mpath7 /mnt/ost5
/dev/mapper/mpath8 /mnt/ost6
/dev/mapper/mpath9 /mnt/ost7
/dev/mapper/mpath10 /mnt/ost8
If either OSS fails, its OSTs are mounted on the other OSS. If the MGS fails, the MGS service is
started on node2. If the MDS fails, the MDS service is started on node1.
The lustre_config CSV input file for this configuration is shown below. Note that each node
has a failover NID specified. The user must type the following on one command line for each
node.
node1,options lnet networks=o2ib0,/dev/mapper/mpath1,/mnt/mgs,mgs,testfs,,,,,
"_netdev,noauto",icnode2@o2ib0
node2,options lnet networks=o2ib0,/dev/mapper/mpath2,/mnt/mds,mdt,testfs,icnode1@o2ib0:icnode2@o2ib0
,,"--param=mdt.group_upcall=NONE",,"_netdev,noauto",icnode1@o2ib0
node3,options lnet networks=o2ib0,/dev/mapper/mpath3,/mnt/ost1,ost,testfs,icnode1@o2ib0:icnode2@o2ib0
,,,,"_netdev,noauto",icnode4@o2ib0
node3,options lnet networks=o2ib0,/dev/mapper/mpath4,/mnt/ost2,ost,testfs,icnode1@o2ib0:icnode2@o2ib0
,,,,"_netdev,noauto",icnode4@o2ib0
node3,options lnet networks=o2ib0,/dev/mapper/mpath5,/mnt/ost3,ost,testfs,icnode1@o2ib0:icnode2@o2ib0
,,,,"_netdev,noauto",icnode4@o2ib0
46 Using HP SFS Software
- HP Part Number: SFSUGG32-E 1
- Published: May 2010 1
- Edition: 5 1
- Table of Contents 3
- 4 Table of Contents 4
- Table of Contents 5 5
- List of Figures 7
- List of Tables 9
- About This Document 11
- Related Information 12
- Structure of This Document 13
- Documentation Updates 13
- HP Encourages Your Comments 13
- 1 What's In This Version 15
- 1.3.1 Hardware Configuration 16
- Figure 1-1 Platform Overview 17
- 1.4 Server Security Policy 19
- 1.5 Release Notes 20
- 2.1 Installation 21
- 2.2 Accessing the MSA CLI 21
- 2.3.2 Creating New Volumes 22
- 2.4 MSA2000 Monitoring 24
- 2.4.1 email Notifications 25
- 2.4.2 SNMP Monitoring 26
- 3.1 Supported Firmware 28
- 3.2 Installation Requirements 29
- 3.3 Installation Phase 1 30
- 3.3 Installation Phase 1 31 31
- 3.4 Installation Phase 2 33
- 3.5.3 Configuring pdsh 35
- 3.5.4 Configuring ntp 35
- 3.6 Upgrade Installation 37
- # start lustre config 38
- # end lustre config 38
- 3.6.2 Client Upgrades 39
- 4.1 Installation Requirements 41
- 4.2 Installation Instructions 42
- 5 Using HP SFS Software 45
- 46 Using HP SFS Software 46
- 5.1.1.1 Multiple File Systems 47
- 5.2 Configuring Heartbeat 48
- 5.2.3 Configuration Files 49
- 50 Using HP SFS Software 50
- 5.2.4 Copying Files 51
- 5.2.5 Things to Double-Check 52
- 5.2.6 Things to Note 52
- 5.3 Starting the File System 53
- 5.4 Stopping the File System 53
- 5.5 Monitoring Failover Pairs 54
- 5.7.1.1 On the Server 55
- 56 Using HP SFS Software 56
- 5.7.1.3 On the Client 58
- 6 Licensing 61
- 62 Licensing 62
- 7.1 Server Reboot 63
- 7.2 Errors from install2 63
- 7.3 Application File Locking 63
- 7.4 MDS Is Unresponsive 63
- 7.8 SELinux Support 64
- Correct configuration output 65
- A HP SFS G3 Performance 67
- A.2 Single Client Performance 68
- A.3 Throughput Scaling 70
- A.3 Throughput Scaling 71 71
- A.4 One Shared File 72
- A.6 Random Reads 73
- A.7.1 Benchmark Platform 74
- A.8 10 GigE Performance 76
- A.8.1 Benchmark Platform 77
- 78 HP SFS G3 Performance 78
- A.8.3 Throughput Scaling 79
- 82 Index 82
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