Monthly Archives: May 2011

The Art of Parallelization with GNU xargs and pssh

As you can imagine, running a for() loop on 1000+ systems is fraught with potential issues and is very very slow. Running commands in parallel greatly speeds things up and keeps normal network time outs from bringing your work to … Continue reading

Posted in Parallelization, Performance, UNIX CLI | Tagged , , , , | 1 Comment

Adjusting disk time outs on errors

Here is very interesting post about adjusting disk time outs to minimize disk subsystem brown outs on your favorite OpenIndiana, Solaris, Nexenta based system. The techniques describe can be applied to SATA drives as well, as it boils down to … Continue reading

Posted in IllumOS, OpenIndiana, OpenSolaris, Nexenta, & Solaris, OpenIndiana, ZFS | Tagged , | Leave a comment

Simple COMSTAR iSCSI, FCoE, FC config view

Someone reached out to me indicated they were having problems masking their iSCSI LUNs. It occured to me that there is no simplified means to quickly view all the iSCSI related STMF configuration data. I don’t count dumping the STMF … Continue reading

Posted in COMSTAR, IllumOS, OpenIndiana, OpenSolaris, Nexenta, & Solaris, iSCSI, NAS, OpenIndiana, SAN, Uncategorized, ZFS | 1 Comment

How enable or install xVNC on OpenIndiana 148

VNC comes in at least two forms for Unix/OpenIndiana/Solaris/Linux/etc. It can run as a user process after you have logged into the xserver, or xVNC can run out of the super server (inetd/xinetd etc). The pros to the VNC option … Continue reading

Posted in Linux, OpenIndiana, VNC, X11, xVNC | Tagged , , | 4 Comments

How to backup and restore COMSTAR (stmf) configurations on OpenIndiana and Solaris.

STMF/COMSTAR configuration data is maintained in the service configuration repository, just like processes started by the service management facility. Like all system configuration data, it is important to maintain backups of your system configuration for all the obvious reasons. Coming … Continue reading

Posted in IllumOS, OpenIndiana, OpenSolaris, Nexenta, & Solaris, iSCSI, OpenIndiana, ZFS | Tagged , , , , , | 2 Comments

How to count files on a ZFS file system

I have a number of thumbnail servers at work based on OpenSolaris and OpenIndiana. Periodically we enter into a discussion about how many videos we have indexed on the internet or how many thumbnails we have, etc. On traditional file … Continue reading

Posted in IllumOS, OpenIndiana, OpenSolaris, Nexenta, & Solaris, ZFS | Tagged | 1 Comment

How to view data distribution across a zpool – the 10,000 foot view

  How you create your zpool and which resources you allocate to it is critical. Outlined below is a thumbnail (origin) server.  It holds about 600M images at time of writing. We can easily see the data distribution across the … Continue reading

Posted in IllumOS, OpenIndiana, OpenSolaris, Nexenta, & Solaris, ZFS | Tagged | 7 Comments

Using OpenIndiana/Nexenta/Solaris with ZFS, COMSTAR, Microsoft iSCSI initiator, and LUN Masking

When I was first getting started with COMSTAR I tried feverishly to find an example of how to mask LUNs from iSCSI clients. The ultimate goal in LUN masking of course, is to keep someone or even yourself from mounting … Continue reading

Posted in IllumOS, OpenIndiana, OpenSolaris, Nexenta, & Solaris, iSCSI, Windows XP, ZFS | Tagged , | 5 Comments