partprobe will NOT work..how will i pass this RHCSA exam with this?

I am days before the RHCSA exam and i have noticed i still haven't been able to successfully run partprobe successfully after months on testing and testing and testing..not a single time

i have tried

partprobe

partprobe /dev/sdx where sdx is drive name

it never works i get warning the kernel failed to re-read the partititon table on /dev/sdx (device or resource busy) as a result it may not reflect all of your changes until after reboot

What do i do?

yes parted is installed

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Comments

thegreenlaantern

Partprobe never worked for me, reboot will find and set up your new drive. Sometimes a reboot will give you a few minutes to think about your next step.

jcadarsh

Why are you doing the partprobe for the RHCSA anyway ?

I have done the exam and train students for this exam as well. I seem to miss the point

thegreenlaantern

Under the RHCSA objectives at: Red Hat | Red Hat Certified System Administrator (RHCSA) Exam objectives (EX200)

Configure local storage

List, create, delete, and set partition type for primary, extended, and logical partitions.
Create and remove physical volumes, assign physical volumes to volume groups, and create and delete logical volumes.
Create and configure LUKS-encrypted partitions and logical volumes to prompt for password and mount a decrypted file system at boot.
Configure systems to mount file systems at boot by Universally Unique ID (UUID) or label.
Add new partitions and logical volumes, and swap to a system non-destructively.

uberwebguru

jcadarsh wrote: »

Why are you doing the partprobe for the RHCSA anyway ?

I have done the exam and train students for this exam as well. I seem to miss the point

so i don't have to reboot? partprobe helps to discover the newly created partition without having to reboot

uberwebguru

thegreenlaantern wrote: »

Partprobe never worked for me, reboot will find and set up your new drive. Sometimes a reboot will give you a few minutes to think about your next step.

thats the thing why can't i avoid reboot? reboot can eat out of my precious time for the exam and especially when i don't want something messed up or the the unforseen happening

i mean why is the partprobe command created then? if it doesn't freaking work or at least when its not consistent? I see videos where it works and i get so annoyed when it never worked for me

undomiel

It sounds like you still have a file system mounted somewhere on that disk as parted 2.1 will fail on any partitions still in use from a file system. Make sure you are running it on a disk that has all file systems on that disk dismounted.

uberwebguru

undomiel wrote: »

It sounds like you still have a file system mounted somewhere on that disk as parted 2.1 will fail on any partitions still in use from a file system. Make sure you are running it on a disk that has all file systems on that disk dismounted.

Not sure what you mean...but lets say i have one sda disk and have 7 partitions(primary and logical) and afetr creating the 7th partition i want to run partprobe...so what do i do? unmount all the other 6 partitions? before runningpartprobe?

Not sure what you mean...will appreciate it if you can give a little more details

thanks

undomiel

Read through this as it can explain things better than I would: https://access.redhat.com/site/solutions/57542