@item snapshot_blkdev
@findex snapshot_blkdev
Snapshot device, using snapshot file as target if provided
+ETEXI
+
+ {
+ .name = "drive_mirror",
+ .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
+ .params = "[-n] [-f] device target [format]",
+ .help = "initiates live storage\n\t\t\t"
+ "migration for a device. The device's contents are\n\t\t\t"
+ "copied to the new image file, including 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_mirror,
+ },
+STEXI
+@item drive_mirror
+@findex drive_mirror
+Start mirroring a block device's writes to a new destination,
+using the specified target.
ETEXI
{