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IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
book

IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning

by Cathy Warrick, Craig Gordon, Benoit Granier, Keitaro Imai, Rosemary McCutchen, Brannen Proctor, Jim Sedgwick, Paulus Usong, Mary Ann Vandermark, John Wickes
December 2005
Intermediate to advanced content levelIntermediate to advanced
530 pages
18h 34m
English
IBM Redbooks
Content preview from IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
218 IBM TotalStorage DS6000 Series: Performance Monitoring and Tuning
Monitoring volume group I/O using lmstat
Once a volume group is enabled for lvmstat monitoring, like rootvg in this example, you
would only need to run lvmstat -v rootvg to monitor all activity to rootvg. An example of the
lvmstat output is shown in Example 7-19.
Example 7-19 lvmstat example
#lvmstat -v rootvg
Logical Volume iocnt Kb_read Kb_wrtn Kbps
lv05 682478 16 8579672 16.08
loglv00 0 0 0 0.00
datalv 0 0 0 0.00
lv07 0 0 0 0.00
lv06 0 0 0 0.00
lv04 0 0 0 0.00
lv03 0 0 0 0.00
Notice that lv05 is busy performing writes.
The lvmstat tool has powerful options such as reporting on a specific ...
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ISBN: 0738494119Purchase book