HP VMA-series Memory Arrays Manuale Utente Pagina 158

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Chapter 9 - Violin Utilities
158
VMA-series Memory Array Installation and Service Guide
HP-AM456-9002A Rev 01
vpartial
The vpartial utility displays the number of read/write I/O requests processed
and the number of partial 4kB flash pages.
Syntax
vpartial [ <device_index> ]
Example
The
vpartial utility returns information similar to the following example when
run on a Linux host:
Returns
The
vpartial utility returns the following information.
# vpartial
Violin Memory, Inc.
Version: vtms-linux-utils-D4.5.4, 05/23/2011
Device: vtmsa
Index: 0
-- Target Unaligned / Partial Counts --
Completed read I/O's: 1995280246
Unaligned host buf reads: 0
Flash partial page reads: 10326
Completed write I/O's: 1903433508
Unaligned host buf writes: 0
Flash partial page writes: 4535553
Completed read I/O's
Displays the total I/O read requests from a
Memory Array. This is not the individual DMA
descriptors completed, but for each of the
user requested I/Os.
Unaligned host buf
reads
Displays the total I/O read requests from a
Memory Array, but only incremented when an
unaligned host address required special
buffer byte copying to service the DMA
request.
Flash partial page
reads
Incremented when a DMA descriptor for
read is less than a flash page (4kB) in size.
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