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March 19, 2012

Creating a Partition Size Larger Than 2TB, 3TB

Filed under: Linux — Tags: , , , , , , , , — admin @ 4:04 pm

Hello
Well recently I have to do a partition biger then 2TB, because I wanted to use all drive for backup.
Because fdisk won’t work, well I figure it out that I have to use parted
so here we go.
parted /dev/sdb
the output will be something like
GNU Parted 2.1
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted)

after tis we create a label
(parted) mklabel gpt
Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No? Yes

After this we specify the unit that we want to use
(parted) unit TB
We tell parted to use all space
(parted) mkpart primary 0 -0
And the result
(parted) print
Model: ATA ST3000DM001-9YN1 (scsi)
Disk /dev/sdb: 3.00TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number Start End Size File system Name Flags
1 0.00TB 3.00TB 3.00TB linux-swap(v1) primary

(parted) quit

Now we format the partition
mkfs.ext4 /dev/sdb1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=1 blocks, Stripe width=0 blocks
183148544 inodes, 732566272 blocks
36628313 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
22357 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544

Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 31 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.

The result
mkdir /backup
mount /dev/sdb1 /backup/
df -h
/dev/sdb1 2.7T 201M 2.6T 1% /backup

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