Hi Juergen, Attached the qemu-dm-VM3.log . No errors are reported here. With 64GB drive in DomU, both "lsusb" and "lsblk" commands lists the USB drive but dmesg shows I/O error.
Thanks Sudheer On Thu, Aug 18, 2022 at 12:02 PM Juergen Gross <jgr...@suse.com> wrote: > [removing xen-users to avoid crossposting] > > On 18.08.22 08:18, A Sudheer wrote: > > Hi All > > > > On XEN-4.16 with Ubuntu 22.04 Dom0 and HVM-DomU, I tried to do a USB > mass > > storage device passthrough to DomU. > > I followed the PVUSB method mentioned in > > https://wiki.xenproject.org/wiki/Xen_USB_Passthrough > > <https://wiki.xenproject.org/wiki/Xen_USB_Passthrough>. > > > > With 8GB sandisk pen drive, i am able to do USB passthrough to DomU. > > But with 64GB sandisk pendrive, though able to mount/umount in Dom0, not > able to > > do passthrough to DomU. > > I see IO errors in dmesg when tried to access the usb disk folder in > DomU. > > Both 8GB and 64GB disks are 3.2Gen1. (Not tried with 16GB & 32GB drives). > > > > Does anyone know why 64GB usb disk passthrough fails with the below > error ? > > > > Dmesg Error: > > ----------------- > > [ 128.333409] usb 2-1: reset high-speed USB device number 2 using > ehci-pci > > [ 128.502872] sd 2:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_ERROR > > driverbyte=DRIVER_OK cmd_age=0s > > [ 128.502881] sd 2:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 00 7a b7 > 00 00 3f 00 > > [ 128.502883] blk_update_request: I/O error, dev sda, sector 31415 op > > 0x0:(READ) flags 0x80700 phys_seg 63 prio class 0 > > Do you have the related qemu log from dom0? Should be something like > /var/log/xen/qemu-dm-*.log > > > Juergen >
qemu-dm-VM3.log
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