软件磁盘阵列的自动挂载及关闭删除

来源：互联网发布：java 判断字符串相等编辑：程序博客网时间：2024/05/21 14:41

[root@localhost ~]# mdadm -D /dev/md0 ##显示状态
[root@localhost ~]# mdadm -f /dev/md0 /dev/vdb1 ##建立一个分区至磁盘阵列中
[root@localhost ~]# mdadm -r /dev/md0 /dev/vdb1 ##从磁盘阵列中删除一个分区
[root@localhost ~]# mdadm -a /dev/md0 /dev/vdb1 ##从磁盘阵列中添加一个分区
[root@localhost ~]# mdadm -S /dev/md0 ##停止服务

自动挂载

[root@www ~]# mdadm --detail /dev/md0 | grep -i uuid        UUID : 7c60c049:57d60814:bd9a77f1:57e49c5b# 后面那一串数据，就是这个装置向系统注册的 UUID 识别码！# 开始配置 mdadm.conf[root@www ~]# vi /etc/mdadm.confARRAY /dev/md0 UUID=7c60c049:57d60814:bd9a77f1:57e49c5b#     RAID装置      识别码内容# 开始配置启动自动挂载并测试[root@www ~]# vi /etc/fstab/dev/md0    /mnt/raid    ext3    defaults     1 2[root@www ~]# umount /dev/md0; mount -a[root@www ~]# df /mnt/raidFilesystem           1K-blocks      Used Available Use% Mounted on/dev/md0               2916920    188464   2580280   7% /mnt/raid# 你得确定可以顺利挂载，并且没有发生任何错误！

关闭及删除

先卸载且删除配置档内与这个 /dev/md0 有关的配置：
[root@www ~]# umount /dev/md0
[root@www ~]# vi /etc/fstab
/dev/md0 /mnt/raid ext3 defaults 1 2
将这一行删除掉！或者是注解掉也可以！
直接关闭 /dev/md0 的方法！
[root@www ~]# mdadm –stop /dev/md0
mdadm: stopped /dev/md0 <==不罗唆！这样就关闭了！

[root@www ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
unused devices: <==看吧！确实不存在任何阵列装置！

[root@www ~]# vi /etc/mdadm.conf
ARRAY /dev/md0 UUID=7c60c049:57d60814:bd9a77f1:57e49c5b
一样啦！删除他或是注解他！

监控方
[root@localhost ~]# watch -n 1 ‘cat /proc/mdstat;echo ====;df -h’
这里写图片描述

操作方[root@localhost ~]# mdadm -D /dev/md0  ##显示状态/dev/md0:        Version : 1.2  Creation Time : Sat Apr 22 06:43:22 2017     Raid Level : raid1     Array Size : 102272 (99.89 MiB 104.73 MB)  Used Dev Size : 102272 (99.89 MiB 104.73 MB)   Raid Devices : 2  Total Devices : 3    Persistence : Superblock is persistent    Update Time : Sat Apr 22 06:43:47 2017          State : clean  Active Devices : 2Working Devices : 3 Failed Devices : 0  Spare Devices : 1           Name : localhost:0  (local to host localhost)           UUID : 2ff5d09a:a24cd459:c86113ee:f7b509bb         Events : 17    Number   Major   Minor   RaidDevice State       0     253       17        0      active sync   /dev/vdb1       1     253       18        1      active sync   /dev/vdb2       2     253       19        -      spare   /dev/vdb3[root@localhost ~]# mdadm -f /dev/md0 /dev/vdb1mdadm: set /dev/vdb1 faulty in /dev/md0[root@localhost ~]# mdadm -r /dev/md0 /dev/vdb1 ##删除mdadm: hot removed /dev/vdb1 from /dev/md0[root@localhost ~]# mdadm -a /dev/md0 /dev/vdb1  ##添加mdadm: added /dev/vdb1[root@localhost ~]# mdadm -D /dev/md0    ##查看状态/dev/md0:        Version : 1.2  Creation Time : Sat Apr 22 06:43:22 2017     Raid Level : raid1     Array Size : 102272 (99.89 MiB 104.73 MB)  Used Dev Size : 102272 (99.89 MiB 104.73 MB)   Raid Devices : 2  Total Devices : 3    Persistence : Superblock is persistent    Update Time : Sat Apr 22 06:55:47 2017          State : clean  Active Devices : 2Working Devices : 3 Failed Devices : 0  Spare Devices : 1           Name : localhost:0  (local to host localhost)           UUID : 2ff5d09a:a24cd459:c86113ee:f7b509bb         Events : 38    Number   Major   Minor   RaidDevice State       2     253       19        0      active sync   /dev/vdb3       1     253       18        1      active sync   /dev/vdb2       3     253       17        -      spare   /dev/vdb1删除[root@localhost ~]# dfFilesystem     1K-blocks    Used Available Use% Mounted on/dev/vda1       10473900 3151180   7322720  31% /devtmpfs          927072       0    927072   0% /devtmpfs             942660      80    942580   1% /dev/shmtmpfs             942660   17056    925604   2% /runtmpfs             942660       0    942660   0% /sys/fs/cgroup/dev/md0           98860    5272     93588   6% /mnt[root@localhost ~]# umount /mnt[root@localhost ~]# dfFilesystem     1K-blocks    Used Available Use% Mounted on/dev/vda1       10473900 3151180   7322720  31% /devtmpfs          927072       0    927072   0% /devtmpfs             942660      80    942580   1% /dev/shmtmpfs             942660   17056    925604   2% /runtmpfs             942660       0    942660   0% /sys/fs/cgroup[root@localhost ~]# mdadm -D /dev/md0  ##显示状态/dev/md0:        Version : 1.2  Creation Time : Sat Apr 22 06:43:22 2017     Raid Level : raid1     Array Size : 102272 (99.89 MiB 104.73 MB)  Used Dev Size : 102272 (99.89 MiB 104.73 MB)   Raid Devices : 2  Total Devices : 3    Persistence : Superblock is persistent    Update Time : Sat Apr 22 07:04:40 2017          State : clean  Active Devices : 2Working Devices : 3 Failed Devices : 0  Spare Devices : 1           Name : localhost:0  (local to host localhost)           UUID : 2ff5d09a:a24cd459:c86113ee:f7b509bb         Events : 38    Number   Major   Minor   RaidDevice State       2     253       19        0      active sync   /dev/vdb3       1     253       18        1      active sync   /dev/vdb2       3     253       17        -      spare   /dev/vdb1[root@localhost ~]# mdadm -S /dev/md0    ##停止服务mdadm: stopped /dev/md0[root@localhost ~]# fdisk /dev/vdbWelcome 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): dPartition number (1-3, default 3): 1Partition 1 is deletedCommand (m for help): dPartition number (2,3, default 3): 2Partition 2 is deletedCommand (m for help): dSelected partition 3Partition 3 is deletedCommand (m for help): dNo partition is defined yet!Command (m for help): pDisk /dev/vdb: 10.7 GB, 10737418240 bytes, 20971520 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk label type: dosDisk identifier: 0x9d727787   Device Boot      Start         End      Blocks   Id  SystemCommand (m for help): wqThe partition table has been altered!Calling ioctl() to re-read partition table.Syncing disks.[root@localhost ~]# partprobe [root@localhost ~]#

0 0