Check if disk is in use before partitioning?

[Dylan Martin]

I all.  

I've used parted and lvm (lvg & lvol) to set up machines, but I recently broke a system when I repartitioned a disk that was already in use. (Wooops!)

Does anyone have a good idea how to determine if a block device is already in use?  By "in use" I mean, mounted in some way.

Thanks!

-Dylan 

[Jonathan Lozada De La Matta]

you can see what is mounted with ansible facts.

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Jonathan lozada de la matta

AUTOMATION CONSULTANT - AUTOMATION PRACTICE

Red Hat Consulting Services

jloz...@redhat.com   

 

[Shawn Singh]

Might be environment/company specific, but in my company we make a partition on each disk so I usually only operate on a disk where the number of partitions is {}.

I've heard discussions of folks using the entire disk, but that isn't something we do, so isn't an issue/concern.

[Sakthivel G]

You can use df - h Linux command to check mounted disks

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