Hi,
Can anybody provide me Pointers to Practice tests or any Material to prepare for Brainbench certification in Unix Shell Scripting? Also how good is this Certification for UNIX programmers. Is it worth it? I'm planning to take this certification in 2 weeks. Kindly let me know all the pros... (0 Replies)
Dear Gurus,
I have encountered a C question, which I thought of sharing with you.
This question was asked by one of my technical training staff...Though my training was over I'm still thinking of a solution for this..
Write a C program to do a small task(lets say just simply printing a "Hello... (34 Replies)
Hi Gurus,
To the Brain Teaser, if I add another condition, say the executable should not be altered, how the program should be altered? (no perl please, purely C). I forgot to mention this condition my staff had mentioned. ( forgot then and got now :D )
The program executed the first time... (4 Replies)
Hello!
I am working on an application which reads environmental instruments which have serial ports. The application requires a serial port to be present to talk to the device (i.e. /dev/ttyS0 ). In some instances the environmental devices will be 100's of yards away from the computer, so a... (5 Replies)
A global group of scientists are spending the next ten years and a billion dollars to try and develop a computer simulation of the brain:
https://www.humanbrainproject.eu/
I always found it fascinating that the brain can understand itself. This almost sounds like in a few years the computer... (0 Replies)
Discussion started by: figaro
0 Replies
LEARN ABOUT HPUX
vxr5check
vxr5check(1M)vxr5check(1M)NAME
vxr5check - verify RAID-5 volume parity
SYNOPSIS
/etc/vx/bin/vxr5check [-i | -v] [-g diskgroup] volume
DESCRIPTION
The vxr5check utility compares the parity of each stripe of a RAID-5 volume specified by volume. vxr5check reads the data for each stripe,
generates the parity for this stripe, and compares this parity with the existing parity.
vxr5check can be run against the entire RAID-5 volume, or incrementally on RAID-5 stripe boundaries, by specifying the -i option.
OPTIONS -g diskgroup
Specifies the Veritas Volume Manager (VxVM) disk group name for the RAID-5 volume name for verification. If this option is not
specified, the default disk group is determined using the rules given in the vxdg(1M) manual page.
-i Verifies the RAID-5 volume incrementally per stripes. If a parity mismatch is found, that stripe location is displayed.
-v Verbose output for the incremental vxr5check verification. The verbose option outputs each stripe number that is being verified.
OUTPUT FORMAT
In verbose mode and incremental mode, summary reports for each stripe of the RAID-5 volume are printed in output records. If an error is
returned for a stripe, then an error message and stripe number are displayed. In non-verbose mode, if an error is returned, an error mes-
sage is displayed.
If a parity mismatch error is determined on a stripe, vxr5check exits on that stripe and does not continue for the remaining stripes in the
RAID-5 volume.
FILES
/usr/lib/vxvm/bin/vxr5vrfy The utility that vxr5check calls to perform RAID-5 parity verification operations for the specified RAID-5
volume.
EXIT CODES
The vxr5check utility exits with a non-zero status if the attempted operation fails. A non-zero 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 vxintro(1M) for a list of standard exit codes.
NOTES
Do not run vxr5check on a volume that is in degraded mode.
SEE ALSO vxevac(1M), vxintro(1M), vxmend(1M), vxvol(1M)VxVM 5.0.31.1 24 Mar 2008 vxr5check(1M)