Slowly but surely I’m getting back into things…

I started playing with CentOS today, at the suggestion of a few of our network geeks in the office.

The great thing about it is that it’s binary compatible with RedHat Enterprise 5.  So things like EMC Solutions Enabler and Veritas Netbackup work perfectly with it.

It’s handy because as anyone who has every tried to write a script in the windows shell knows, what Microsoft knows about scripting can fit on the back of a postage stamp.

sed and awk are my friends.  Say it with me…. 

“We Love Sed”

“We Love Awk”

I truly am a geek.  My wife lets me know this on a daily basis.  She doesn’t understand how someone can spend 10 hours at work in front of a computer and come home and relax in front of a computer.

Nuff said. 🙂



    • Daniel on December 23, 2008 at 10:39 am
    • Reply

    Hi all,

    I was looking around the web for EMC related information and came across this site. I have a question for all of the EMC gurus out there.

    Has anyone successfully been able to take an EMC mirror/clone/snap taken from a Linux server and mount the mirror/clone/snap on the same server as the source volumes?

  1. There are two ways to do this.

    1> Using LVM you can activate the snap/clone, present the lun to the host, and re-import the VG which changes the PVID’s of the disks.

    2> Not using LVM you simply activate the snap, re-present the lun to the host, re-scan the bus, and mount the new lun to a different directory.

    That being said snapping a lun back to the same host seems counter-productive doesn’t it? The whole purpose would be to off-load the backup cycles to a different host, whereas this way you’d be competing with production for CPU/Memory resources.

    Be easier just to use the internal Snapshot capability of the LInux LVM.

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