Hi, It seem that drive-mirror block job, remove the detect-zeroes drive property on the target drive
qemu ....
-device virtio-scsi-pci,id=scsihw0,bus=pci.0,addr=0x5
-drive
file=/source.raw,if=none,id=drive-scsi2,cache=writeback,discard=on,aio=native,detect-zeroes=unmap
# info block
drive-scsi2: /source.raw (raw)
Detect zeroes: unmap
do a drive mirror to a new target.raw file
# info block
drive-scsi2: /target.raw (raw)
is it a bug ?
