partitioning dev/sdb

hatfani · 08-09-2021, 08:23 AM

Hello everyone,

I have a /dev/sdb disk with 2T.
It is already partitioned to sdb1 which is mount on the directory /home/raid
/home/raid directory has 2T and is currently using 15gb.
I want to have a new partition called sdb2 without harming the information on sdb1.
I want sdb2 to have 1.5T out of that 2T.

I saw that I can use parted command or fdisk for that, but I'm not sure how to do it without ruining the server or harming the 15gb on sdb1.
how do I create that sdb2 partition? what should I notice?

Any suggestions?

Thank you!!!

TB0ne · 08-09-2021, 08:55 AM

Quote:

Originally Posted by hatfani

Hello everyone,

I have a /dev/sdb disk with 2T. It is already partitioned to sdb1 which is mount on the directory /home/raid /home/raid directory has 2T and is currently using 15gb. I want to have a new partition called sdb2 without harming the information on sdb1. I want sdb2 to have 1.5T out of that 2T.

I saw that I can use parted command or fdisk for that, but I'm not sure how to do it without ruining the server or harming the 15gb on sdb1. how do I create that sdb2 partition? what should I notice?

Any suggestions?

Did you try putting "how to use parted to resize a partition" into a search-engine? That would be a good first suggestion.
https://www.tecmint.com/parted-comma...sk-partitions/

Beyond that, the question itself seems pointless, because before doing ANYTHING of that nature, you should first take backups of your data...meaning if you already HAVE a backup of your data, you can just format the drive and re-partition it as you want to. Then copy your data back to it.

michaelk · 08-09-2021, 08:59 AM

Does the directory name have any meaning? If /home/raid is actually a raid then we need more information as to type etc.

uteck · 08-09-2021, 09:01 AM

You don't mention how the disk is formatted. You have it mounted in /home/raid, so is this part of raid array?
If it is not part of a raid, then resizing is easy, take a look at gparted, the graphical fronted to parted. If is part of a raid, then you have more work to do.

hatfani · 08-09-2021, 09:02 AM

Quote:

Originally Posted by TB0ne

Did you try putting "how to use parted to resize a partition" into a search-engine? That would be a good first suggestion.
https://www.tecmint.com/parted-comma...sk-partitions/

Beyond that, the question itself seems pointless, because before doing ANYTHING of that nature, you should first take backups of your data...meaning if you already HAVE a backup of your data, you can just format the drive and re-partition it as you want to. Then copy your data back to it.

Thank you for that, I have backup of my files. I have delete them from /home/raid. I was actually thinking if I just change the mounting point in /etc/fstab from /home/raid to /mnt, will it change the mounting point?

hatfani · 08-09-2021, 09:04 AM

Quote:

Originally Posted by uteck

You don't mention how the disk is formatted. You have it mounted in /home/raid, so is this part of raid array?
If it is not part of a raid, then resizing is easy, take a look at gparted, the graphical fronted to parted. If is part of a raid, then you have more work to do.

it is the only partition on the disk and it's mounted on /home/raid. thank you

knet · 08-09-2021, 09:06 AM

@hatfani you can try Gparted

Quote:

GParted is a free partition editor for graphically managing your disk partitions.

With GParted you can resize, copy, and move partitions without data loss, enabling you to:

Grow or shrink your C: drive
Create space for new operating systems
Attempt data rescue from lost partitions

TB0ne · 08-09-2021, 10:03 AM

Quote:

Originally Posted by hatfani

Thank you for that, I have backup of my files. I have delete them from /home/raid. I was actually thinking if I just change the mounting point in /etc/fstab from /home/raid to /mnt, will it change the mounting point?

Yes...changing the mount point will indeed *CHANGE THE MOUNT POINT*; that would seem obvious. And why /mnt?? Does that exist on your system? And if so, other things may mount under it..is it a blank directory?

And why bother changing the mount point at all? That does absolutely NOTHING to change the partitions. Again, do some basic research...you were given a link that answers your question, so you can use the commands you didn't look up for yourself, or backup your data and format/partition the drive. Your choice.

zeebra · 08-13-2021, 11:16 AM

Quote:

Originally Posted by TB0ne

Yes...changing the mount point will indeed *CHANGE THE MOUNT POINT*; that would seem obvious. And why /mnt?? Does that exist on your system? And if so, other things may mount under it..is it a blank directory?

/mnt is normally for temporary manual mounts and is not a good choice.

Things these days normally get mounted under /var/run/media/user.. I don't find this a good solution, quite annoying to be frank. And many times I've heard users who can't access their /var/run/media/user/disk due to wrong permissions in that folder.
In that case I prefer /mnt/something which is much shorter, and have the same permission issue as /var/run/media/user.

Quote:

Originally Posted by hatfani

I was actually thinking if I just change the mounting point in /etc/fstab from /home/raid to /mnt, will it change the mounting point?

You COULD mount something permanently under /mnt/somedisk, but that is not the optimal place to mount something. It is normally used as manual mount location.

But probably if is is a USER disk, the better place would be to mount it somewhere in /home/user/*/. Or you could mount it with group access in /home/*

onebuck · 08-14-2021, 08:33 AM

Hi,

Quote:

Originally Posted by zeebra

/mnt is normally for temporary manual mounts and is not a good choice.

Things these days normally get mounted under /var/run/media/user.. I don't find this a good solution, quite annoying to be frank. And many times I've heard users who can't access their /var/run/media/user/disk due to wrong permissions in that folder.
In that case I prefer /mnt/something which is much shorter, and have the same permission issue as /var/run/media/user.

You COULD mount something permanently under /mnt/somedisk, but that is not the optimal place to mount something. It is normally used as manual mount location.

But probably if is is a USER disk, the better place would be to mount it somewhere in /home/user/*/. Or you could mount it with group access in /home/*

Care to share as to why one should not use '/mnt' as a mount point. I create a '/mnt/sdc2' to do a lot of work on that partition. As the user I cannot see an issue with creating a mount point under '/mnt'. Be it permanent or just for maintenance issues the mount point would be workable. As the user it is my awareness and root privilege to use my hardware and OS as I see fit to do. I have never seen any reason to use '/mnt' only for temporary use. I can use it as I see fit without issues.

I will follow norms when installing packages but that to can use '/mnt' when doing the install '/mnt' mount point can be used as the source.
I have multiple mount points under '/mnt' but if someone other that me tries to just mount at '/mnt' then issues will occur. But that too can be protected/prevented from happening by setting permissions. Not being argumentative but query as too why you state that mount points at '/mnt' should not be used normally by users.

Just a friendly request as to your 'why'?

zeebra · 08-14-2021, 09:27 AM

Quote:

Originally Posted by onebuck

Hi,

Care to share as to why one should not use '/mnt' as a mount point. I create a '/mnt/sdc2' to do a lot of work on that partition. As the user I cannot see an issue with creating a mount point under '/mnt'. Be it permanent or just for maintenance issues the mount point would be workable. As the user it is my awareness and root privilege to use my hardware and OS as I see fit to do. I have never seen any reason to use '/mnt' only for temporary use. I can use it as I see fit without issues.

I will follow norms when installing packages but that to can use '/mnt' when doing the install '/mnt' mount point can be used as the source.
I have multiple mount points under '/mnt' but if someone other that me tries to just mount at '/mnt' then issues will occur. But that too can be protected/prevented from happening by setting permissions. Not being argumentative but query as too why you state that mount points at '/mnt' should not be used normally by users.

Just a friendly request as to your 'why'?

I use /mnt/ as a mountpoint all the time with subfolders and all, it's generally my favourite place to mount things (manually).. So I don't know why exactly. But according to Linux Filesystem Hierarchy Standard you're not suppose to use /mnt in that way

I mean, they even created /media to make us stop doing that. Then that was moved into /var and some weird folders.. Automounting I mean. But then again, I don't generally use automounting.