At Mon, 2 Nov 2009 19:54:30 -0500 Robert Heller heller@deepsoft.com wrote:
At Mon, 02 Nov 2009 18:02:25 -0600 CentOS mailing list centos@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=512but, 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.)