超2T容量的磁盘分区

文档课题：超2T容量的磁盘分区.
系统：rhel 7.6 64位
1、下载gdisk分区工具
[root@leo-cqupt ~]# ip a | grep -i 10.191.122.148
[root@leo-cqupt ~]# yum install gdisk

2、gdisk分区
[root@leo-cqupt ~]# gdisk /dev/sdc
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
MBR: not present
BSD: not present
APM: not present
GPT: not present

Creating new GPT entries.

Command (? for help): n
Partition number (1-128, default 1):
First sector (34-64424509406, default = 2048) or {+-}size{KMGTP}:
Last sector (2048-64424509406, default = 64424509406) or {+-}size{KMGTP}:
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): L
0700 Microsoft basic data 0c01 Microsoft reserved 2700 Windows RE
3000 ONIE boot 3001 ONIE config 4100 PowerPC PReP boot
4200 Windows LDM data 4201 Windows LDM metadata 7501 IBM GPFS
7f00 ChromeOS kernel 7f01 ChromeOS root 7f02 ChromeOS reserved
8200 Linux swap 8300 Linux filesystem 8301 Linux reserved
8302 Linux /home 8400 Intel Rapid Start 8e00 Linux LVM
a500 FreeBSD disklabel a501 FreeBSD boot a502 FreeBSD swap
a503 FreeBSD UFS a504 FreeBSD ZFS a505 FreeBSD Vinum/RAID
a580 Midnight BSD data a581 Midnight BSD boot a582 Midnight BSD swap
a583 Midnight BSD UFS a584 Midnight BSD ZFS a585 Midnight BSD Vinum
a800 Apple UFS a901 NetBSD swap a902 NetBSD FFS
a903 NetBSD LFS a904 NetBSD concatenated a905 NetBSD encrypted
a906 NetBSD RAID ab00 Apple boot af00 Apple HFS/HFS+
af01 Apple RAID af02 Apple RAID offline af03 Apple label
af04 AppleTV recovery af05 Apple Core Storage be00 Solaris boot
bf00 Solaris root bf01 Solaris /usr & Mac Z bf02 Solaris swap
bf03 Solaris backup bf04 Solaris /var bf05 Solaris /home
bf06 Solaris alternate se bf07 Solaris Reserved 1 bf08 Solaris Reserved 2
bf09 Solaris Reserved 3 bf0a Solaris Reserved 4 bf0b Solaris Reserved 5
c001 HP-UX data c002 HP-UX service ea00 Freedesktop $BOOT
eb00 Haiku BFS ed00 Sony system partitio ed01 Lenovo system partit
Press the <Enter> key to see more codes:
ef00 EFI System ef01 MBR partition scheme ef02 BIOS boot partition
fb00 VMWare VMFS fb01 VMWare reserved fc00 VMWare kcore crash p
fd00 Linux RAID
Hex code or GUID (L to show codes, Enter = 8300): 8300
Changed type of partition to 'Linux filesystem'

Command (? for help): p
Disk /dev/sdc: 64424509440 sectors, 30.0 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 8D89FA8B-DB37-4444-B0F4-A00ABD3825AF
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 64424509406
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)

Number Start (sector) End (sector) Size Code Name
1 2048 64424509406 30.0 TiB 8300 Linux filesystem

Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
The operation has completed successfully.
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[root@leo-cqupt ~]# lsblk -p
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
/dev/sda 8:0 0 446.1G 0 disk
├─/dev/sda1 8:1 0 1G 0 part /boot
├─/dev/sda2 8:2 0 2G 0 part /boot/efi
├─/dev/sda3 8:3 0 318G 0 part
│ ├─/dev/mapper/vg_system-root 253:0 0 50G 0 lvm /
│ ├─/dev/mapper/vg_system-swap 253:1 0 8G 0 lvm [SWAP]
│ ├─/dev/mapper/vg_system-usr 253:2 0 30G 0 lvm /usr
│ ├─/dev/mapper/vg_system-home 253:3 0 200G 0 lvm /home
│ ├─/dev/mapper/vg_system-var 253:4 0 50G 0 lvm /var
│ ├─/dev/mapper/vg_system-opt 253:6 0 20G 0 lvm /opt
│ └─/dev/mapper/vg_system-itm6 253:7 0 10G 0 lvm /itm6
└─/dev/sda4 8:4 0 50G 0 part
└─/dev/mapper/vg_system-home 253:3 0 200G 0 lvm /home
/dev/sdb 8:16 0 1.3T 0 disk
/dev/sdc 8:32 0 30T 0 disk
└─/dev/sdc1 8:33 0 30T 0 part
/dev/loop0 7:0 0 4.2G 0 loop /mnt/iso

3、格式化磁盘
[root@leo-cqupt ~]# mkfs.ext4 /dev/sdc1
mke2fs 1.42.9 (28-Dec-2013)
Discarding device blocks: 完成
文件系统标签=
OS type: Linux
块大小=4096 (log=2)
分块大小=4096 (log=2)
Stride=0 blocks, Stripe width=256 blocks
503316480 inodes, 8053063419 blocks
402653170 blocks (5.00%) reserved for the super user
第一个数据块=0
245760 block groups
32768 blocks per group, 32768 fragments per group
2048 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, 1934917632,
2560000000, 3855122432, 5804752896

Allocating group tables: 完成
正在写入inode表: 完成
Creating journal (32768 blocks): 完成
Writing superblocks and filesystem accounting information: 完成

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4、挂载磁盘
[root@leo-cqupt ~]# mkdir /oradata
[root@leo-cqupt ~]# mount /dev/sdc1 /oradata

 写进/etc/fstab文件
[root@leo-cqupt ~]# vi /etc/fstab
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[root@leo-cqupt ~]# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Thu Aug 3 14:05:33 2023
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_system-root / ext4 defaults 1 1
UUID=787a5782-2b85-4962-ab1d-b11693ebbe2a /boot ext4 defaults 1 2
UUID=3ABC-C598 /boot/efi vfat umask=0077,shortname=winnt 0 0
/dev/mapper/vg_system-home /home ext4 defaults 1 2
/dev/mapper/vg_system-itm6 /itm6 ext4 defaults 1 2
/dev/mapper/vg_system-opt /opt ext4 defaults 1 2
/dev/mapper/vg_system-oracle /oracle ext4 defaults 1 2
/dev/mapper/vg_system-usr /usr ext4 defaults 1 2
/dev/mapper/vg_system-var /var ext4 defaults 1 2
/dev/mapper/vg_system-swap swap swap defaults 0 0
(添加如下内容)
/dev/sdc1 /oradata ext4 defaults 0 0

5、磁盘验证
[root@leo-cqupt ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/vg_system-root 50G 5.2G 42G 12% /
devtmpfs 189G 56M 189G 1% /dev
tmpfs 189G 637M 189G 1% /dev/shm
tmpfs 189G 4.1G 185G 3% /run
tmpfs 189G 0 189G 0% /sys/fs/cgroup
/dev/mapper/vg_system-usr 30G 3.4G 25G 12% /usr
/dev/sda1 976M 116M 793M 13% /boot
/dev/sda2 2.0G 12K 2.0G 1% /boot/efi
/dev/mapper/vg_system-home 197G 169G 19G 91% /home
/dev/mapper/vg_system-var 50G 3.4G 44G 8% /var
/dev/mapper/vg_system-opt 20G 2.9G 16G 16% /opt
/dev/mapper/vg_system-itm6 9.8G 394M 8.9G 5% /itm6
tmpfs 38G 0 38G 0% /run/user/0
/dev/loop0 4.2G 4.2G 0 100% /mnt/iso
tmpfs 512M 760K 512M 1% /OSM/data/omm/perf
tmpfs 38G 0 38G 0% /run/user/1004
tmpfs 38G 0 38G 0% /run/user/1005
tmpfs 38G 0 38G 0% /run/user/11012
tmpfs 38G 0 38G 0% /run/user/54321
/dev/sdc1 30T 20K 29T 1% /oradata

说明：如上所示/dev/sdc1磁盘成功挂载到/oradata目录.