IC Insights:25 大半導體公司營收年終盤點,AMD 增長率居首
阿新 • • 發佈:2021-11-17
centos 磁碟分割槽
Linux 磁碟管理
# 為什麼伺服器中有10塊硬碟,在 linux 系統中顯示少於10塊的情況
答:因為系統盤做了 raid 將幾塊資料盤做成了一塊,用與防止某一塊資料盤損壞導致資料丟失。
sda sdb sdc sde 指的就是
# 系統分割槽是在作什麼?
答:系統分割槽是指在一塊硬碟中化一個到四個分割槽,類似 windows 中的 C 盤、D盤、 E盤
# 分割槽完成之後 /dev 資料夾下就會多了一個 /sde1 /sde2 /sde3
# 給磁碟進行分割槽 $ fdisk /dev/sde Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): m #輸入 m 檢視幫助 Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition g create a new empty GPT partition table G create an IRIX (SGI) partition table l list known partition types m print this menu n add a new partition # 建立一個新的分割槽 o create a new empty DOS partition table p print the partition table # 列印分割槽表 q quit without saving changes # 退出 s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit # 儲存並退出 x extra functionality (experts only) Command (m for help): n # 建立主分割槽 Partition type: p primary (2 primary, 0 extended, 2 free) # 主分割槽最多有四個 e extended Select (default p): p # 選擇 p 模式 Partition number (3,4, default 3): First sector (734005248-2343174143, default 734005248): 734005248 # 從指定扇區開始 Last sector, +sectors or +size{K,M,G} (734005248-2343174143, default 2343174143): +300G # 主分割槽大小 Partition 3 of type Linux and of size 300 GiB is set Command (m for help): w # 儲存並退出 The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks.
$ lsblk # 檢視磁碟分割槽 [root@controller1 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 558.4G 0 disk ├─sda1 8:1 0 200M 0 part /boot/efi ├─sda2 8:2 0 1G 0 part /boot └─sda3 8:3 0 557.2G 0 part ├─centos00-root 253:0 0 553.2G 0 lvm / └─centos00-swap 253:1 0 4G 0 lvm [SWAP] sdb 8:64 0 1.1T 0 disk sdc 8:64 0 1.1T 0 disk sdd 8:64 0 1.1T 0 disk sde 8:64 0 1.1T 0 disk ├─sde1 8:65 0 50G 0 part └─sde2 8:66 0 300G 0 part ├─sde3 8:65 0 50G 0 part └─sde4 8:66 0 300G 0 part nvme0n1 259:0 0 745.2G 0 disk └─nvme0n1p1 259:1 0 745.2G 0 part