centos分卷后如何查看状态

在CentOS系统中，如果你指的是磁盘分卷后的状态查看，可以通过以下几种方法：

使用lsblk命令

lsblk命令可以列出所有可用的块设备及其挂载点、大小等信息。

lsblk

输出示例：

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0   100G  0 disk 
├─sda1   8:1    0   50G  0 part /
├─sda2   8:2    0   50G  0 part [SWAP]
sr0     11:0    1  1024M  0 rom  

使用fdisk命令

fdisk命令不仅可以用来创建分区，还可以查看磁盘的分区信息。

sudo fdisk -l

输出示例：

Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x000c29fb

Device     Boot Start      End  Sectors Size Id Type
/dev/sda1  *     2048 10485759 10483712   5G ef EFI (FAT-12/16/32)
/dev/sda2       10485760 20971519 10485760   5G 83 Linux
/dev/sda3       20971520 209715200 188743681  90 Linux LVM

使用df命令

df命令可以查看文件系统的磁盘空间使用情况。

df -h

输出示例：

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg00-lv_root  50G   10G   38G  22% /
tmpfs                 3.9G     0  3.9G   0% /dev/shm
/dev/sda1             487M   11M  458M   3% /boot
tmpfs                 1.9G  1.2M  1.9G   1% /run
tmpfs                 5.0M  4.0K  5.0M   1% /run/lock
tmpfs                 1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/sdb1             932G  100G  833G  11% /mnt/data

使用pvs, vgs, lvs命令

如果你使用了LVM（逻辑卷管理），可以使用以下命令查看物理卷、卷组和逻辑卷的状态。

查看物理卷

sudo pvs

查看卷组

sudo vgs

查看逻辑卷

sudo lvs

使用smartctl命令

smartctl是smartmontools包的一部分，可以用来查看硬盘的健康状态。

首先安装smartmontools：

sudo yum install smartmontools

然后使用smartctl查看硬盘状态：

sudo smartctl -a /dev/sda

输出示例：

smartctl 6.2 2013-07-29 r3784 [x86_64-linux-3.10.0-957.1.3.el7.x86_64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     Seagate Barracuda 7200.14 (SCSI)
Serial Number:    WDCWDN00000000
LU WWN Device Id: 5 000039 050000000
Firmware Version: CC4B
User Capacity:    1,000,204,886,016 bytes [1,000 GB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 6
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 1.5 Gb/s)
Local Time is:    Thu Apr 22 12:34:56 2021 CDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x80) Offline data collection activity
                    was never started.
Automated Offline Data Collection on: (none)
Manual Offline Data Collection on: (none)

SMART Capabilities:
Online Data Collection Frequency: (0x80) Offline data collection activity
                            was never started.
Self-test execution status:      (   0) The previous self-test routine completed
                                    without error or no self-test has ever 
                                    been run.
Self-test routine scheduled (ON): (   0) Do not schedule self-test routine
                                    automatically.
Error Logging support:       (0x1b) Error logging to host supported.
                            VPD pages supported.
Short self-test routine scheduled (ON): (   0) Do not schedule short self-test routine
                                    automatically.
Long self-test routine scheduled (ON): (   0) Do not schedule long self-test routine
                                    automatically.
Conveyance Self-test routine scheduled (ON): (   0) Do not schedule conveyance self-test routine
                                    automatically.
SMART Self-test history version: (0x00) 1
Self-test routines scheduled (0): (none)
SMART Selective self-test flags (0x00):
    Logical unit not supported (LUN)
    No self-test scheduled

SMART Self-test summary:
    No failed attributes found.

通过这些命令，你可以全面了解CentOS系统中磁盘分卷后的状态。

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