Bug 1411092

+++ This bug was initially created as a clone of Bug #1410964 +++

Description of problem: 
4K virtual drives broken on Windows with virtio-win-0.1-104 and greater. Versions previous to virtio-winl-0.1-104 work fine.

Version-Release number of selected component (if applicable):
4K virtual drives fail to format on Windows with virtio-winl-0.1-104 and greater. Versions previous to virtio-winl-0.1-104 work fine.


How reproducible:
Configure a 4K sector virtio virtual data disk and attempt to format it in any windows guest that supports 4K sector data disks i.e W2K12R2, Windows 10.

Steps to Reproduce:
1. Specify virtual disk as 4K logical and physical sector size in XML
2. Start windows guest
3. Attempt to use the 4K sector disk by first formatting it.

Actual results:
Format fails on 4K sector drives.

Expected results:
Format 4K drives.

Additional info:
The problem is viostor stores the wrong value in the driver extension for the last lba. The driver returns the correct value for last LBA in the read capacity request but inappropriately uses this same value in I/O request bounds checking. As a result, windows fails in formating 4K sector drives. 


qemu info:
2017-01-04 19:41:55.201+0000: starting up libvirt version: 2.0.0, package: 10.el7_3.2 (CentOS BuildSystem <http://bugs.centos.org>, 2016-12-06-19:53:38, c1bm.rdu2.centos.org), qemu version: 1.5.3 (qemu-kvm-1.5.3-126.el7), hostname: xxx
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name b2win -S -machine pc-i440fx-rhel7.0.0,accel=kvm,usb=off -cpu Broadwell,+rtm,+hle,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff -m 4096 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 78c1e479-d1a6-46a2-8828-d0fc8c570d3d -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-9-b2win/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -drive file=/mnt/vgsdb/b2_boot/b2w_boot.img,format=raw,if=none,id=drive-ide0-0-0 -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -drive if=none,id=drive-ide0-0-1,readonly=on -device ide-cd,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1 -drive file=/mnt/vgsdb/b2w_data/b2w_data.img,format=raw,if=none,id=drive-virtio-disk1 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk1,id=virtio-disk1,logical_block_size=4096,physical_block_size=4096 -netdev tap,fd=27,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:d6:f3:59,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0,bus=usb.0,port=1 -vnc 127.0.0.1:1 -vga std -global VGA.vgamem_mb=16 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 -msg timestamp=on
char device redirected to /dev/pts/2 (label charserial0)