Good afternoon.
I have Centos 8 Minimal installed on a hyper-v virtual machine. I get errors below. Help me please. What should I do?
12:29 Buffer I/O error on dev sr0, logical block 1, async page read kernel
12:29 Buffer I/O error on dev sr0, logical block 0, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 0 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 7, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 7 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 6, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 6 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 5, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 5 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 4, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 4 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 3, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 3 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 2, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 2 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 1, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 1 flags 0 kernel
12:29 Buffer I/O error on dev sr0, logical block 0, async page read kernel
12:29 print_req_error: I/O error, dev sr0, sector 0 flags 0 kernel
Buffer I/O error and print_req_error
Re: Buffer I/O error and print_req_error
It's telling you that it's unable to read whatever is in the "CD/DVD" drive on that VM. You should verify if the iso image or physical device that is attached to it is functioning correctly.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke
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- Posts: 8
- Joined: 2020/05/02 09:56:27
Re: Buffer I/O error and print_req_error
But I don’t have anything in the “CD / DVD”. I have now deleted the "CD / DVD" from the virtual machine. Errors have stopped yet
Re: Buffer I/O error and print_req_error
Well /dev/sr0 is your virtual optical drive inside the VM. It's trying to access it and getting errors so it presumably thinks there is media in it and that it's corrupt.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke