[SOLVED] Buffer IO Error

[kems]

On a VM i get
[ 1374.599785] Buffer I/O error on device vdb1, logical block 13288195

[ 1374.599986] blk_update_request: I/O error, dev vdb, sector 106309568

But nothing on the host dmesg. SMART looks fine

Can I fix this?

 

[mira]

This issue has been reported a lot since the 7.1 release [0].
It seems to be an issue with Kernel 5.13, pve-qemu-kvm 6.1, io_uring and VirtIO Block (`virtio`)/SATA.

You could try switchting to VirtIO SCSI (`scsi`), or try booting the latest 5.11 kernel.


[0] https://bugzilla.proxmox.com/show_bug.cgi?id=3738

 

[kems]

sorry for dumb question: am I loosing data rn?

 

[mira]

Data that has been written already should not be corrupted (hopefully), but it seems new writes can't be done.
So it depends on the application in your VM if anything got lost.

I'd recommend switching sooner rather than later. And if in doubt, restore from backup.

 

[kems]

this is my config

 

[mira]

To change it, you have to detach it so that the disk becomes `unused`, and then edit it and select `SCSI` for `Bus/Device`.

 

[kems]

do i need to change something in fstab?

 

[kems]

the vm do not boot anymore....

 

[mira]

Is it a Windows VM? If so, you probably want to switch to IDE, as SCSI requires additional drivers to be installed [0].


[0] https://pve.proxmox.com/wiki/Windows_VirtIO_Drivers

 

[kems]

cloudlinux 7.9 - cpanel

 

[kems]

Thank you. I've managed to change it to SCSI. Fingers crossed.