Ticket #19717 (closed defect: fixed)
Storage IO Erros With virtio-scsi Controller When Host I/O Cache is Enabled => fixed in SVN/next 7.0.x and 6.1.x maintenance
| Reported by: | Miky.Ne | Owned by: | |
|---|---|---|---|
| Component: | virtual disk | Version: | VirtualBox 6.1.2 |
| Keywords: | I/O cache VERR_NOT_IMPLEMENTED | Cc: | |
| Guest type: | Linux | Host type: | Windows |
Description
On Ubuntu Server 20.04 guest in Virtualbox 6.1.2 on a Win10 (2004) host: I've selected the virtio-scsi controller and enabled the host I/O cache option to maximize performance. With this configuration, I see multiple I/O related errors in the guest's shell and dmesg log ("Buffer I/O error on device sda2, logical block xxxxxxx", "I/O error, dev sda, sector yyyyyy op 0x0:(READ) flags 0x80700 phys_seg 20 prio class 0", and many others). On the host's log I see multiple messages like "SCSI#0: Read at offset xxxxxxxxx (4096 bytes left) returned rc=VERR_NOT_IMPLEMENTED".
All above errors disappear when host I/O cache is disabled. This seems to have started with Virtualbox 6.1.2. When downgrading to Virtuabox 6.1.0 There are no problems when cache is enabled.
Attached are 2 logs for the same machine (created and running on Virtualbox 6.1.2), one with the cache enabled and the other disabled.
Any help will be much appreciated.
I have reported the problem in the Virtualbox forums: https://forums.virtualbox.org/viewtopic.php?f=3&t=98962, no responses.
Attachments
-
US3-HOST-IO-CACHE-ENABLED.log
(96.1 KB) -
added by Miky.Ne 3 years ago.
-
US3-HOST-IO-CACHE-DISABLED.log
(71.2 KB) -
added by Miky.Ne 3 years ago.
Change History
comment:1 Changed 22 months ago by wsherman
I have the same issue if using >1 CPU, virtio-scsi, and host I/O cache.
Host OS: MX Linux (Debian based)
Host Kernel: 5.12.0-8.1-liquorix-amd64 (preempt)
VirtualBox version: 6.1.22
Guest OS: Xubuntu 20.04 w/ latest updates installed
1 CPU for VM
AHCI (Host I/O Cache on or off) = OK
virtio-scsi (Host I/O Cache on or off) = OK
2 CPU for VM
AHCI (Host I/O Cache on or off) = OK
virtio-scsi (Host I/O Cache off) = OK
virtio-scsi (Host I/O Cache on) = BAD (I/O errors)
comment:2 Changed 7 months ago by kdsys
I have the same issue!!!!!!!!!!!
I have the same issue if using >1 CPU, virtio-scsi, and host I/O cache.
Host OS: Windows 10 10.0.19043.1889
Host Kernel: 5.15.0-46-generic
VirtualBox version: 6.1.36
Guest OS: Xubuntu 20.04.1 latest updates installed
comment:3 Changed 5 months ago by aeichner
- Summary changed from Storage IO Erros With virtio-scsi Controller When Host I/O Cache is Enabled to Storage IO Erros With virtio-scsi Controller When Host I/O Cache is Enabled => fixed in SVN/next 7.0.x and 6.1.x maintenance
Will be fixed in the next 7.0.x and6.1.x maintenance releases, thanks for the report!
comment:4 Changed 4 months ago by galitsyn
- Status changed from new to closed
- Resolution set to fixed
VirtualBox 7.0.4 was just released and available for download at https://www.virtualbox.org/wiki/Downloads. This issue should be fixed in this version.
