Comments on: Redimensionner une partition ext3/ext4

By: DrTebi

DrTebi — Tue, 13 Feb 2018 07:11:13 +0000

Shrinking ext4 worked exactly as described, using resize2fs, cfdisk, resize2fs again.

Thanks a lot for posting, cheers!

By: Oludario

Oludario — Mon, 28 Nov 2016 20:06:57 +0000

I just added additional 100gb to /dev/sda on vSphere client. How would you suggest I add the new space to /dev/sda2 shown below?

# fdisk -l /dev/sda

Disk /dev/sda: 221.2 GB, 113816633344 bytes
255 heads, 63 sectors/track, 13837 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0009c915

Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 5690 45493248 83 Linux
/dev/sda3 5690 9229 28432384 83 Linux
/dev/sda4 9229 13838 37017600 5 Extended
/dev/sda5 9230 10645 11372544 83 Linux
/dev/sda6 10646 11495 6823936 83 Linux
/dev/sda7 11495 12203 5686272 83 Linux
/dev/sda8 12203 13272 8584192 82 Linux swap / Solaris
/dev/sda9 13272 13555 2274304 83 Linux
/dev/sda10 13555 13838 2270208 83 Linux

By: Unix:How to extend CentOS 5 partition on VMware? – Unix Questions

Unix:How to extend CentOS 5 partition on VMware? – Unix Questions — Tue, 20 Oct 2015 11:59:55 +0000

[…] Info found from a combination of answers on this page and on http://positon.org/resize-an-ext3-ext4-partition […]

By: Linux boot with broken partition | Question and Answer

Linux boot with broken partition | Question and Answer — Wed, 03 Sep 2014 18:36:13 +0000

[…] wanted to reduce (with this method) the home partition (which was only something like 10% filled) to create a new partition for […]

By: Marc

Marc — Thu, 13 Jun 2013 12:48:14 +0000

Hi Tim,
Yes, you're right : it's better to use fdisk to be sure that the partition keeps the same start.

By: Tim Miller Dyck

Tim Miller Dyck — Wed, 12 Jun 2013 14:49:38 +0000

Hi, a note to check the starting sector before recreating the partition and ensure the new partition starts at the same sector. When I used cfdisk, it created the partition starting at sector 34. I had used fdisk to create the original partition and it created the partition starting at sector 2048. Starting the partition at a different disk location than before, of course, resulted in a partition with no valid file system. I used fdisk again to create the new (larger) partition and all was fine.

By: Rick

Rick — Mon, 22 Apr 2013 09:00:53 +0000

to Antonello,

It should not loose your data. Of course, it's *always* a smart idea to have a current backup before you start! (-;

Rick

By: Antonello

Antonello — Tue, 09 Apr 2013 10:38:07 +0000

Will this LOOSE my data ? I need to resise an ext4 /home partition (/dev/sda9) to make space for something else but I don't want to loose the data I have inside it.
I can boot and go directly to console as root so I can unmount /home, but then how can I resize it without loosing data inside? For some reasons I can't go to the gui with no /home so I can't use gparted.

By: Kcswalter

Kcswalter — Sun, 30 Sep 2012 15:51:19 +0000

Dear David su, asking for a PM just means leaving others with your same problem in the dark. Since this is not a private matter (nothing confidential is passed on) wouldn't it be better to let everyone know?

What the system is saying is that you have to do the resize on an unmounted partition. Filesystem operations like resizing, checking and so on should always be done offline.

You just have to keep a live cd at hand.

By: david su

david su — Sun, 19 Aug 2012 05:48:10 +0000

dear sir,

in ubuntu server, to reduce the ext4 filesytem size from 1T, i run the "resize2fs /dev/mapper/ispconfig-root 500G" and got the below output to the console:

Filesystem at /dev/mapper/ispconfig-root is mounted on /; on-line resizing required
On-line shrinking from 267809792 to 131072000 not supported.

it is much appreciated if you can help to email the resolution to my email address qiubosu@gmail.com.

thanks.