Linux 在线新增硬盘,系统不重启识别新增硬盘
2017-09-14 15:48
246 查看
不想关闭系统直接添加磁盘,发现linux系统不自动识别新增加的硬盘;
1.查看现有的磁盘,只有一块磁盘sda;
[root@localhost ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 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
Disk label type: dos
Disk identifier: 0x000c4c5a
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 41943039 19921920 8e Linux LVM
Disk /dev/mapper/cl-root: 19.3 GB, 19318964224 bytes, 37732352 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
Disk /dev/mapper/cl-swap: 1073 MB, 1073741824 bytes, 2097152 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
2. 增加一块磁盘30G
![](https://s3.51cto.com/wyfs02/M01/A5/41/wKioL1m6LtazoJCwAACm_yJ-Dhc056.png-wh_500x0-wm_3-wmp_4-s_3746613090.png)
3. 在linux系统中是无法直接挂载上的,使用fdisk -l 发现不了新增加的硬盘
4. 查看主机总线号
ls /sys/class/scsi_host/
![](https://s1.51cto.com/wyfs02/M02/06/91/wKiom1m6MYSTdmLbAAAQpCH8QRc428.png-wh_500x0-wm_3-wmp_4-s_748211126.png)
5. 重新扫描SCSI总线来添加设备
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan
‘- - -’代表channel,target和LUN编号
![](https://s3.51cto.com/wyfs02/M02/A5/42/wKioL1m6MlCx2VYKAAAZUK_kDxo755.png-wh_500x0-wm_3-wmp_4-s_568870063.png)
6. 再次执行fdisk -l 新增的sdb出现,下一步就可以按照需求进行分区了
![](https://s5.51cto.com/wyfs02/M02/A5/42/wKioL1m6MrCzjW-PAAC3RRgn1Xs996.png-wh_500x0-wm_3-wmp_4-s_2298563097.png)
铸剑团队签名:【总监】十二春秋之,3483099@qq.com;【Master】戈稻不苍,han169@126.com;【Java开发】雨鸶,343691194@qq.com;思齐骏惠,qiangzhang1227@163.com;小王子,545106057@qq.com;巡山小钻风,840260821@qq.com;【VS开发】豆点,2268800211@qq.com;【系统测试】土镜问道,847071279@qq.com;尘子与自由,695187655@qq.com;【大数据】沙漠绿洲,caozhipan@126.com;张三省,570417591@qq.com;【网络】夜孤星,11297761@qq.com;【系统运营】三石头,261453882@qq.com;平凡怪咖,591169003@qq.com;【容灾备份】秋天的雨,18568921@qq.com;【安全】保密,你懂的。原创作者:三石头著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。
1.查看现有的磁盘,只有一块磁盘sda;
[root@localhost ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 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
Disk label type: dos
Disk identifier: 0x000c4c5a
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 41943039 19921920 8e Linux LVM
Disk /dev/mapper/cl-root: 19.3 GB, 19318964224 bytes, 37732352 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
Disk /dev/mapper/cl-swap: 1073 MB, 1073741824 bytes, 2097152 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
2. 增加一块磁盘30G
![](https://s3.51cto.com/wyfs02/M01/A5/41/wKioL1m6LtazoJCwAACm_yJ-Dhc056.png-wh_500x0-wm_3-wmp_4-s_3746613090.png)
3. 在linux系统中是无法直接挂载上的,使用fdisk -l 发现不了新增加的硬盘
4. 查看主机总线号
ls /sys/class/scsi_host/
![](https://s1.51cto.com/wyfs02/M02/06/91/wKiom1m6MYSTdmLbAAAQpCH8QRc428.png-wh_500x0-wm_3-wmp_4-s_748211126.png)
5. 重新扫描SCSI总线来添加设备
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
echo "- - -" > /sys/class/scsi_host/host2/scan
‘- - -’代表channel,target和LUN编号
![](https://s3.51cto.com/wyfs02/M02/A5/42/wKioL1m6MlCx2VYKAAAZUK_kDxo755.png-wh_500x0-wm_3-wmp_4-s_568870063.png)
6. 再次执行fdisk -l 新增的sdb出现,下一步就可以按照需求进行分区了
![](https://s5.51cto.com/wyfs02/M02/A5/42/wKioL1m6MrCzjW-PAAC3RRgn1Xs996.png-wh_500x0-wm_3-wmp_4-s_2298563097.png)
铸剑团队签名:【总监】十二春秋之,3483099@qq.com;【Master】戈稻不苍,han169@126.com;【Java开发】雨鸶,343691194@qq.com;思齐骏惠,qiangzhang1227@163.com;小王子,545106057@qq.com;巡山小钻风,840260821@qq.com;【VS开发】豆点,2268800211@qq.com;【系统测试】土镜问道,847071279@qq.com;尘子与自由,695187655@qq.com;【大数据】沙漠绿洲,caozhipan@126.com;张三省,570417591@qq.com;【网络】夜孤星,11297761@qq.com;【系统运营】三石头,261453882@qq.com;平凡怪咖,591169003@qq.com;【容灾备份】秋天的雨,18568921@qq.com;【安全】保密,你懂的。原创作者:三石头著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。
相关文章推荐
- 虚拟机新增硬盘,如何让Linux系统识别到?
- 解决重装系统后不识别光驱和第二块硬盘并且频繁重启的问题
- linux新增硬盘,做ext4的文件系统
- 不重新启动Linux,手工识别在线新增磁盘方法
- Linux不重启添加识别硬盘
- 装windows和Linux系统时找不到硬盘,pe安装系统没有出现磁盘,不能识别磁盘
- 在linux系统下新增硬盘
- Linux 如何不重启而识别新增的 LUN
- 不重新启动Linux,手工识别在线新增磁盘方法
- 不重启Linux主机来识别新加的硬盘
- 解决linux 不能识别ntfs分区问题(linux系统挂载移动硬盘)
- 解决PXE批量安装Linux系统时kickstart自动识别硬盘名称的问题
- Linux系统中如何挂载第二块硬盘
- 解决找不到ifconfig命令,更改路径并重启系统后进入命令行界面以及各个命令无法执行Linux:-bash: ***: command not found
- 重装系统当识别不到硬盘的解决办法
- LINUX系统下添加映射存储LUN(无需重启)
- Nginx在Windows系统和Linux系统下的重启
- Linux系统重启python程序
- linux 系统之重启tomcat 服务器的小脚本
- Linux新增硬盘