Hi Qemu mailing list
This is my first time here, I hope this is the right place for this!
qemu-img is reporting a sector error that is preventing the compression of an Windows7 image by qemu-img. This sector error cannot be found with either the "qemu-img check" or internal Windows 7 "chkdsk" commands. The host physical disk (SSD or spinning HD) has no reported sector errors using gparted.
Command is:
qemu-img convert -c -f qcow2 Windows_7.qcow2 -O qcow2 Windows_7-compressed.qcow2
Error is:
qemu-img: error while reading sector 57492736: Input/output error
checking image with qemu-img shows no errors:
# qemu-img check Windows_7.qcow2
No errors were found on the image.
916112/917504 = 99.85% allocated, 22.81% fragmented, 9.55% compressed clusters
Image end offset: 56792645632
This error occurs at the same sector with the versions of Qemu (with compile flags):
4.0.0-r50 (aio alsa bzip2 caps curl fdt filecaps gnutls gtk jpeg lzo ncurses nfs nls opengl pin-upstream-blobs png pulseaudio sasl sdl seccomp smartcard spice usb usbredir vhost-net virtfs vnc xattr xfs xkb)
4.1.0 (aio alsa bzip2 caps curl fdt filecaps gnutls gtk jpeg lzo ncurses nfs nls opengl oss pin-upstream-blobs png pulseaudio sasl sdl seccomp smartcard spice usb usbredir vhost-net virtfs vnc xattr xfs xkb)
Host OS: Gentoo / Calculate Linux
Host Kernel: 4.19.77-calculate #1 SMP PREEMPT x86_64
Host CPU: i7-3740QM Intel
thanks in advance with help on this!