[Hyperic-hq-discuss] Monitoring Solaris NFS Drives IO Statistics

[JeanDagenais2 <sig...@hy...>]

Hello,

I need to monitor the disk IO statistics of NFS drives on Solaris/SPARC.

Sigar is able to do it, but I need to provide the device name, e.g. nfs1 instead of the mount point.

The question is: [b]Is there an easy way to map the nfs mount points (e.g. server0123:/remote_data1) to a device name (e.g. nfs5)?[/b]


This is how the output of the SIGAR API calls looks like:

For a local disk: 

fslist[i].getDirName()              /local_data1
fslist[i].getDevName()              /dev/dsk/c3t2d0s5
fileSystemUsage.toString()          {DiskQueue=0.0, DiskReadBytes=183227405312, DiskWriteBytes=359966466048, Free=20722965, DiskWrites=5573518, UsePercent=0.87, DiskReads=28092646, Files=16889600, Used=119656085, Avail=19319175, FreeFiles=16889584, DiskServiceTime=0.0, Total=140379050}
fileSystemUsage.getFiles()          16889600
fileSystemUsage.getFreeFiles()      16889584
fileSystemUsage.getAvail()          19319175
fileSystemUsage.getFree()           20722965
fileSystemUsage.getTotal()          140379050
fileSystemUsage.getUsed()           119656085
fileSystemUsage.getUsePercent()     87
fileSystemUsage.getDiskReadBytes()  183227405312
fileSystemUsage.getDiskWriteBytes() 359966466048
fileSystemUsage.getReads()          28092646
fileSystemUsage.getWrites()         5573518
fileSystemUsage.getDiskQueue()      0.0
fileSystemUsage.getDiskServiceTime()  0.0

For a remote "NFS" disk:

fslist[i].getDirName()              /remote_data1
fslist[i].getDevName()              server0123:/remote_data1
fileSystemUsage.toString()          {Files=16889600, Used=119656085, Avail=19319175, DiskQueue=-1.0, FreeFiles=16889584, DiskServiceTime=-1.0, Free=20722965, Total=140379050, UsePercent=0.87}
fileSystemUsage.getFiles()          16889600
fileSystemUsage.getFreeFiles()      16889584
fileSystemUsage.getAvail()          19319175
fileSystemUsage.getFree()           20722965
fileSystemUsage.getTotal()          140379050
fileSystemUsage.getUsed()           119656085
fileSystemUsage.getUsePercent()     87

In order to get the Reads/Writes, etc, I need to use this call and specify the nfs device to Sigar.

diskUsage = sigar.getDiskUsage("nfs5");
diskUsage.toString()                {Writes=0, WriteBytes=0, ServiceTime=0.7298743809250833, ReadBytes=4555014496, Queue=1.503356652653156E-10, Reads=139553}
diskUsage.getReadBytes()            4555014496
diskUsage.getWriteBytes()           0
diskUsage.getReads()                139553
diskUsage.getWrites()               0
diskUsage.getServiceTime()          0.7298743809250833

Right now, I am prototyping using iostat -xpI and iostat -xpnI (running them as Runtime.getRuntime().exec to build the mapping, so I can send the right nfs.... name for the remote disk to Sigar.

I would appreciate an easier way to do it.

Thanks very much for your help!
Jean