Content-type: text/html
volstat - Logical Storage Manager (LSM) statistics management utility
/usr/sbin/volstat [-g diskgroup] [-i interval] [-c count] [-f fields] [-r] [-psvd] [object ...]
The following options are recognized:
Select records from the specified disk group. The
diskgroup
option argument can be either a disk group name or
disk group ID.
Print the change in volume statistics that occurs after every
interval
seconds. The first interval is assumed to encompass
the entire previous history of
objects.
Subsequent
displays will show statistics with a zero value if there has been no change
since the previous interval.
Stop after printing interval statistics
count
times.
Select the display of statistics collected. The following
options are available:
Statistics on read and write operations. Displays six fields:
the number of read operations, the number of write operations, the number
of blocks read, the number of blocks written, the average time spent on read
operations in the interval, and the average time spent on write operations
in the interval. These statistics are displayed as the default output format.
Statistics on atomic copies performed (has meaning only for
volumes). Displays the number of operations, number of blocks, and the average
time spent per operation.
Statistics on plex read and plex write ioctls (has meaning
only for volumes). Displays six fields: the number of plex read operations,
the number of plex write operations, the number of blocks read, the number
of blocks written, the average time spent on plex read operations in the interval,
and the average time spent on plex write operations in the interval.
Statistics on verified reads and writes (has meaning only
for volumes). Displays six fields: the number of verified read operations,
the number of verified write operations, the number of blocks read, the number
of blocks written, the average time spent on verified read operations in the
interval, and the average time spent on verified write operations in the interval.
Statistics on corrected (fixed) read operations (has meaning
only for volumes). Displays the number of fixed read and write operations.
Displays the number of failed read and write operations.
Reset statistics instead of printing them. This option will
follow the same selection rules as printing for any type selection arguments
or for any named objects. If an interval was specified on the command line,
then the first set of statistics will not be printed since they will have
been reset to zero. Subsequent activity will cause printing of statistics
as normal.
Display statistics for volumes on the
objects
specified on the command line. For an
object
that is a plex or a subdisk, displays information about the
volume with which the
object
is associated. If
an
object
supplied is a disk, then any volumes
that occupy any part of the disk will be selected.
Display statistics for plexes on the
object
specified on the command line. For subdisk
objects,
displays information about a plex with which it is associated.
Display statistics for subdisks on the
objects
specified on the command line.
Display statistics for disks on which the
object
specified on the command line is fully or partially located.
The volstat utility prints and resets statistics information on one or more volumes, plexes, subdisks, or disks.
The
volstat
utility reads statistics from the volume
device files in the directory
/dev/rvol/
and prints them
to standard output. These statistics represent volume, plex, subdisk, and
disk activity since boot time. If no
object
operands
are given, then statistics from all volumes in the configuration database
are reported.
object
can be the name of a volume,
plex, subdisk, or disk.
Summary statistics for each object are printed in one-line output records, preceded by two header lines. The output line consists of blank-separated fields for the object type, object name (standard), and the fields requested by the -f switch in the order they are specified on the command line.
If the
-i
interval
option
was supplied, then statistics will be prefaced with a time-stamp showing the
current local time on the system.
The
volstat
utility exits with a nonzero status if
the attempted operation fails. A nonzero exit code is not a complete indicator
of the problems encountered, but rather denotes the first condition that prevented
further execution of the utility. See
volintro(8)
for a list of
standard exit codes.
To display statistics for all subdisks associated with all volumes, use the command: /usr/sbin/volstat -s To display statistics for the plexes and subdisks of a volume named blop, use the following: /usr/sbin/volstat -ps blop To reset all statistics for a disk group named foodg, type the following command: /usr/sbin/volstat -g foodg -r To display 5 sets of disk statistics at 10 second intervals, use the following: /usr/sbin/volstat -i 10 -c 5 -d