I drove up to Dallas the other day to add a shelf of storage for a customer’s DR array. They were very interested in seeing the physical installation, but they are based in San Antonio and it was difficult for them to break away for a day just to watch the install. I decided to document… Read More »
Just playing around with this today, and it’s very cool. FreeBSD 9.2 now supports TRIM/UNMAP for ZFS. To see if your disk is reporting the capability, look for kern.cam.da.<device>.delete_method where <device> is the number of the da device, i.e. /dev/da5 is “5” in that place. For example: # sysctl -a | grep delete_method kern.cam.da.0.delete_method: NONE kern.cam.da.1.delete_method:… Read More »
Here’s how you can reboot any iSCSI Drobo (DroboElite or B800i, anyhow) on your network: Install FreeBSD 8, 9 or 10 on a system or VM Fire up the iSCSI initiator (old version with FreeBSD 9 or earlier, or new version with FreeBSD 10 beta) Connect to the Drobo With the earlier version of the… Read More »
My friend Earl did a quick writeup of how to disable AMBER alerts on your iPhone, for those of you who are so inclined. Here you go http://earlruby.org/2013/08/how-to-turn-off-amber-alerts-on-an-iphone/
If you are booting a Linux system via iSCSI (using Broadcomm or Intel iSCSI-bootable Ethernet), certain information specific to your system is embedded in the Linux configuration during the OS installation. If you then clone that LUN and try to boot it with another system, all hell breaks loose. The system starts to boot and… Read More »