Query: dskx
OS: ultrix
Section: 8
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
dskx(8) System Manager's Manual dskx(8) Name dskx - generic disk exerciser Syntax /usr/field/dskx [ options ] -rdev /usr/field/dskx [ options ] -pdevpart /usr/field/dskx [ options ] -cdev Description The exerciser tests the disk drives on your system. The exerciser has three main options which include read only, write/read/validate data on a partition, and write/read/validate data of a disk. The exerciser does random seeks and reads of random block sizes and random seeks, writes, reads, and validations of random data patterns of random block sizes. The exerciser will run until or kill -15 pid is sent to the process. A logfile is made in for you to examine and then remove. If there are errors in the logfile, make sure you check the file, because that is where the driver and kernel error messages are saved. CAUTION: Both the -c and -p options of the exerciser destroy data on the disk. Use extreme caution before using them on any non-scratch media. If you are unsure of what data is on the disk, contact your system manager before running with either of these options. Arguments One of the following function flags and arguments must be specified. -rdev Performs a random read-only test on all partitions except the c partition. The dev argument can be a raw or buffered device name and number. For example, rhp0, ra3, hk1. -pdevpart Writes, reads, and validates data from the device name and number specified by dev and the partition specified by part. The dev argument can be a raw or buffered device name and number. For example, rhp0, ra3, hk1. The part argument can be any valid par- tition from a - h. CAUTION: Be careful when exercising partitions that overlap other partitions, as you may inadvertently destroy data on a parti- tion that you do not want to test. You can use the -q option of the command to see what partitions overlap on the device on your system. -cdev Writes, reads, and validates data from all partitions except the c partition on the device specified by dev. The dev argument can be a raw or buffered device name and number. For example, rhp0, ra3, hk1. Options The options are: -h Prints help message for the command. -ofile Saves output diagnostics in file. -tn Specifies the run time in minutes (n). The default is to run until the process receives a or kill -15 pid. -dm Prints statistics every m minutes. Restrictions If there is a need to run a system exerciser over an NFS link or on a diskless system there are some restrictions. For exercisers that need to write into a file system, such as the target file system must be writable by root. Also the directory, in which any of the exer- cisers are executed, must be writable by root because temporary files are written into the current directory. These latter restrictions are sometimes difficult to overcome because often NFS file systems are mounted in a way that prevents root from writing into them. Some of the restrictions may be overcome by copying the exerciser to another directory and then executing it. Examples The following example exercises RA disk unit 1, for 60 minutes in the background: % /usr/field/dskx -t60 -cra1 & The following example exercises raw HP disk unit 0, partition d, until or kill -15 pid: % /usr/field/dskx -prhp0d See Also Guide to System Exercisers dskx(8)
Related Man Pages |
---|
netx(8) - ultrix |
shmx(8) - ultrix |
diskx(8) - osf1 |
fsx(8) - osf1 |
shmx(8) - osf1 |
Similar Topics in the Unix Linux Community |
---|
AIX 5.2 5.3 disk performance exerciser tool |
identify the unix process performing high disk i/o reads and writes |
exe |