Daily Archives: April 20, 2010

Use icapstatus to display Instant Capacity (iCAP) status and information: # icapstatusSoftware version:          B.08.00System ID:                 test06Serial number:             UFR99899X2Product number:           A6752AUnique ID:                 Z3e1999999999ffb4System contact e-mail:  me @ mydomain.caFrom e-mail:               Set to the default (‘adm’)Asset reporting:           onTemporary capacity warning period:  15 daysException status:          No … Continue reading →

If you get this error when trying to lvextend a lvol: lvextend: “LogicalExtentsNumber” is bigger than the maximum value allowed. It is becuse you have tried to use more than 65,535 logical extents — the limit for a logical volume. Your … Continue reading →

When I started in UNIX, I really fancy cheat sheets, as they give quick reference to the most useful commands. They are helpful to both new and experienced administrators. Even the most experienced UNIX system administrators forget their commands, sometimes … Continue reading →

System administrators will often reboot their boxes because of certain need like patch installation and kernel parameter change. Below is a guide to properly shutdown and reboot the system. THE PRE-WORK 1. Get important system information: Common Information needed# hostname# … Continue reading →

No outage required , if you have online jfs. If you do not have online jfs , do all the following in LVM maintenance mode.Note: this will only work if SWAP is NOT the next lvol after / a. Login … Continue reading →

You can to use the /usr/contrib/Q4/bin/q4 utility. cd /var/adm/crash/crash.0 # /usr/contrib/Q4/bin/q4 -p . (note the “dot” at the end of the command) At the q4> prompt, type:q4> run Analyze AU > ana.out q4> run WhatHappened -HANG > what.out NOTE:  ctrl-c … Continue reading →

A quick guide to extend an LVM with a VXFS Filesystem. 1. Verify OnLineJFS is installed# swlist -l product | grep -i vxfs# swlist -l product | grep -i onlineLook for OnlineJFS or AdvJournalFS 2. It is a good practice … Continue reading →