@findex drive_mirror
Start mirroring a block device's writes to a new destination,
using the specified target.
+ETEXI
+
+ {
+ .name = "drive_backup",
+ .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
+ .params = "[-n] [-f] device target [format]",
+ .help = "initiates a point-in-time\n\t\t\t"
+ "copy for a device. The device's contents are\n\t\t\t"
+ "copied to the new image file, excluding data that\n\t\t\t"
+ "is written after the command is started.\n\t\t\t"
+ "The -n flag requests QEMU to reuse the image found\n\t\t\t"
+ "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
+ "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
+ "so that the result does not need a backing file.\n\t\t\t",
+ .mhandler.cmd = hmp_drive_backup,
+ },
+STEXI
+@item drive_backup
+@findex drive_backup
+Start a point-in-time copy of a block device to a specificed target.
ETEXI
{