+ETEXI
+
+ {
+ .name = "snapshot_blkdev_internal",
+ .args_type = "device:B,name:s",
+ .params = "device name",
+ .help = "take an internal snapshot of device.\n\t\t\t"
+ "The format of the image used by device must\n\t\t\t"
+ "support it, such as qcow2.\n\t\t\t",
+ .mhandler.cmd = hmp_snapshot_blkdev_internal,
+ },
+
+STEXI
+@item snapshot_blkdev_internal
+@findex snapshot_blkdev_internal
+Take an internal snapshot on device if it support
+ETEXI
+
+ {
+ .name = "snapshot_delete_blkdev_internal",
+ .args_type = "device:B,name:s,id:s?",
+ .params = "device name [id]",
+ .help = "delete an internal snapshot of device.\n\t\t\t"
+ "If id is specified, qemu will try delete\n\t\t\t"
+ "the snapshot matching both id and name.\n\t\t\t"
+ "The format of the image used by device must\n\t\t\t"
+ "support it, such as qcow2.\n\t\t\t",
+ .mhandler.cmd = hmp_snapshot_delete_blkdev_internal,
+ },
+
+STEXI
+@item snapshot_delete_blkdev_internal
+@findex snapshot_delete_blkdev_internal
+Delete an internal snapshot on device if it support
+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
+
+ {
+ .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.