This machine is a virtual virtualization tools vsphere out a large-scale virtual machine memory, 100 GB, two disk T. running above the many services
Originally Like this level should not be deployed on a virtual machine, but resources are limited, so in addition to some of the following columns wrong
phenomenon
Server completely stuck, unable to move anything, just report the following error message:
blk_update_request: I/O error, dev fd0, sector 0 From the Internet to find a lot of information, tried a lot of solutions, but unsatisfactory
Attempted solution
Think to change mistakes and floppy disks are related, so the floppy disk into the bios settings disabled. But invalid
Enter the bios use of U disk boot into rescue mode, and then the / dev / mapper / centos-home unloaded using the
xfs_repairtools to fix it. But after the repair is completed, does not solve the problem.Reference this article https://blog.51cto.com/dangzhiqiang/1657511
Centos enter single-user mode, and / dev / mapper / centos-root unloaded using the
xfs_repairtools to fix it. But after the repair is completed, does not solve the problem.Reinstall the system partition, but retain data , tested the following steps on a test machine, no problem, began operations on the real machine.
The main reference of this document
https://blog.csdn.net/weixin_40596016/article/details/83744581
This document there are a lot of pit
It should be noted in advance of that , my system is centos7.5, do not know what version from the start, the system is based on the default partition lvm be divided.