*** UNIX MANUAL PAGE BROWSER ***

volstat(8) System Manager's Manual volstat(8) NAME volstat - Logical Storage Manager (LSM) statistics management utility SYNOPSIS /usr/sbin/volstat [-g diskgroup] [-i interval] [-c count] [-f fields] [ -r ] [ -psvd] [ object ... ] DESCRIPTION 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. OPTIONS 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 oc- curs 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 follow- ing 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 av- erage 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 opera- tion. 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 opera- tions in the interval, and the average time spent on plex write opera- tions 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. Subse- quent 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. OUTPUT FORMAT 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 pref- aced with a time-stamp showing the current local time on the system. EXIT CODES The volstat utility exits with a nonzero status if the attempted opera- tion fails. A nonzero exit code is not a complete indicator of the problems encountered, but rather denotes the first condition that pre- vented further execution of the utility. See volintro(8) for a list of standard exit codes. EXAMPLES 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 follow- ing 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 RELATED INFORMATION volintro(8), voltrace(8) delim off volstat(8)