At Mon, 2 Nov 2009 19:54:30 -0500 Robert Heller <heller at deepsoft.com> wrote: > > At Mon, 02 Nov 2009 18:02:25 -0600 CentOS mailing list <centos at centos.org> wrote: > > > > > John R Pierce wrote: > > > Les Mikesell wrote: > > >> If you can see activity lights, you can 'cat /dev/sd? >/dev/null' to > > >> make them busy, one at a time (where ? is a, b, c, etc). > > >> > > > > > > hahaha, I've done that, only my version is... > > > > > > # dd if=/dev/sdX of=/dev/null bs=512 > > > > > > but, same difference > > > > It's unfortunately about the best we've got when device names are > > assigned more or less randomly. NICs are even worse - we need a command > > to make the lights blink there too. > > AH for the days of HSZ70 boxes... There is a command to make a selected > disk in the array blink its light... Here is something that seems to work: Install sg3_utils and do something like: sudo /usr/bin/sg_turs -n=5000 /dev/sdX (sg_turs does a TEST UNIT READY command, in the above case, it does 5000 of them. This is enough to light up the access light for like a second or so.) > > > > -- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows heller at deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/