linux查看磁盘及磁盘类型

2023-07-30 14:52| 来源: 网络整理| 查看: 265

1.查看磁盘

使用df -h，查看当前硬盘信息，但不会显示未挂载的磁盘

[root@node1 ~]# df -h 文件系统容量已用可用已用% 挂载点 /dev/mapper/centos-root 1.1T 80G 971G 8% / devtmpfs 126G 0 126G 0% /dev tmpfs 126G 0 126G 0% /dev/shm tmpfs 126G 3.3M 126G 1% /run tmpfs 126G 0 126G 0% /sys/fs/cgroup /dev/sde3 1.8T 25G 1.7T 2% /data12 /dev/sdd4 1.8T 109G 1.6T 7% /data9 /dev/sdc1 1.8T 1.4T 338G 81% /data3 /dev/sdc2 1.8T 1.5T 306G 83% /data4 /dev/sdd3 1.8T 126G 1.6T 8% /data8 /dev/sdb1 1.8T 1.5T 243G 87% /data1 /dev/sdd2 1.8T 117G 1.6T 7% /data7 /dev/sdb2 1.8T 1.5T 249G 86% /data2 /dev/sdd1 1.8T 881G 861G 51% /data6 /dev/sde2 1.8T 16G 1.7T 1% /data11 /dev/sde1 1.8T 20G 1.7T 2% /data10 /dev/sde4 1.8T 95G 1.7T 6% /data5 /dev/mapper/centos-home 2.6T 1.1T 1.5T 43% /home /dev/sda2 1014M 214M 801M 22% /boot /dev/sda1 200M 11M 189M 6% /boot/efi tmpfs 26G 0 26G 0% /run/user/0 cm_processes 126G 8.0G 118G 7% /run/cloudera-scm-agent/process .....

使用fdisk -l，查看所有磁盘信息，显示未挂载的磁盘

[root@node1 ~]# fdisk -l WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. 磁盘 /dev/sde：8001.6 GB, 8001563222016 字节，15628053168 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理)：512 字节 / 4096 字节 I/O 大小(最小/最佳)：4096 字节 / 4096 字节磁盘标签类型：gpt Disk identifier: 7602EB92-8E94-4926-83AC-239615E1127A # Start End Size Type Name 1 34 3906250000 1.8T Microsoft basic primary Partition 1 does not start on physical sector boundary. 2 3906250752 7812499455 1.8T Microsoft basic primary 3 7812499456 11718750207 1.8T Microsoft basic primary 4 11718750208 15625000959 1.8T Microsoft basic primary WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. 磁盘 /dev/sdd：8001.6 GB, 8001563222016 字节，15628053168 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理)：512 字节 / 4096 字节 I/O 大小(最小/最佳)：4096 字节 / 4096 字节磁盘标签类型：gpt Disk identifier: D6DD4D62-3760-43B8-84E2-C2E1EA58F25B # Start End Size Type Name 1 34 3906250000 1.8T Microsoft basic primary Partition 1 does not start on physical sector boundary. 2 3906250752 7812499455 1.8T Microsoft basic primary 3 7812499456 11718750207 1.8T Microsoft basic primary 4 11718750208 15625000959 1.8T Microsoft basic primary WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. 磁盘 /dev/sda：4000.8 GB, 4000787030016 字节，7814037168 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理)：512 字节 / 512 字节 I/O 大小(最小/最佳)：512 字节 / 512 字节磁盘标签类型：gpt Disk identifier: BF2C7713-20A2-4993-9067-F44F0C957290 # Start End Size Type Name 1 2048 411647 200M EFI System EFI System Partition 2 411648 2508799 1G Microsoft basic 3 2508800 7814035455 3.7T Linux LVM WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. 磁盘 /dev/sdc：4000.8 GB, 4000787030016 字节，7814037168 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理)：512 字节 / 512 字节 I/O 大小(最小/最佳)：512 字节 / 512 字节磁盘标签类型：gpt Disk identifier: 47F028E4-71B5-45EA-8550-0DA97E0C2D60 # Start End Size Type Name 1 2048 3907018751 1.8T Microsoft basic primary 2 3907018752 7814035455 1.8T Microsoft basic primary WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. 磁盘 /dev/sdb：4000.8 GB, 4000787030016 字节，7814037168 个扇区 Units = 扇区 of 1 * 512 = 512 bytes 扇区大小(逻辑/物理)：512 字节 / 512 字节 I/O 大小(最小/最佳)：512 字节 / 512 字节磁盘标签类型：gpt Disk identifier: 7CC7B9DF-1EEC-4B3F-8296-B9F4D3E6EDFF # Start End Size Type Name 1 2048 3907018751 1.8T Microsoft basic primary 2 3907018752 7814035455 1.8T Microsoft basic primary ........ 2.查看磁盘类型

使用cat /sys/block/sda/queue/rotational，命令中的sda是磁盘名称。返回结果：返回0：SSD盘(固态硬盘) 返回1：SATA盘(使用SATA口的机械硬盘)

[root@node1 ~]# cat /sys/block/sda/queue/rotational 1 3.SSD盘和SATA盘优缺点

SATA机械硬盘：

优点：容量大，价格低，技术成熟，存储可靠。缺点：速度相对于固态较慢，介质越到边缘速度越慢，安全性不高（发生断电、碰撞容易坏），读取数据有轻微响声。

SSD固体硬盘：

优点：无噪音，体积小，速度快，更省电，重量轻，发热小。缺点：容量相对小，价格昂贵。

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