docs/devel/blkverify: Convert to rST format

Convert blkverify.txt to rST format.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20240816132212.3602106-3-peter.maydell@linaro.org

MAINTAINERS

@@ -3890,6 +3890,7 @@ M: Stefan Hajnoczi <stefanha@redhat.com>
 L: qemu-block@nongnu.org
 S: Supported
 F: block/blkverify.c
+F: docs/devel/blkverify.rst
 
 bochs
 M: Stefan Hajnoczi <stefanha@redhat.com>

docs/devel/blkverify.txt → docs/devel/testing/blkverify.rst

@@ -1,8 +1,10 @@
-= Block driver correctness testing with blkverify =
+Block driver correctness testing with ``blkverify``
+===================================================
 
-== Introduction ==
+Introduction
+------------
 
-This document describes how to use the blkverify protocol to test that a block
+This document describes how to use the ``blkverify`` protocol to test that a block
 driver is operating correctly.
 
 It is difficult to test and debug block drivers against real guests.  Often
@@ -11,12 +13,13 @@ of the executable.  Other times obscure errors are raised by a program inside
 the guest.  These issues are extremely hard to trace back to bugs in the block
 driver.
 
-Blkverify solves this problem by catching data corruption inside QEMU the first
+``blkverify`` solves this problem by catching data corruption inside QEMU the first
 time bad data is read and reporting the disk sector that is corrupted.
 
-== How it works ==
+How it works
+------------
 
-The blkverify protocol has two child block devices, the "test" device and the
+The ``blkverify`` protocol has two child block devices, the "test" device and the
 "raw" device.  Read/write operations are mirrored to both devices so their
 state should always be in sync.
 
@@ -25,13 +28,14 @@ contents to the "test" image.  The idea is that the "raw" device will handle
 read/write operations correctly and not corrupt data.  It can be used as a
 reference for comparison against the "test" device.
 
-After a mirrored read operation completes, blkverify will compare the data and
+After a mirrored read operation completes, ``blkverify`` will compare the data and
 raise an error if it is not identical.  This makes it possible to catch the
 first instance where corrupt data is read.
 
-== Example ==
+Example
+-------
 
-Imagine raw.img has 0xcd repeated throughout its first sector:
+Imagine raw.img has 0xcd repeated throughout its first sector::
 
     $ ./qemu-io -c 'read -v 0 512' raw.img
     00000000:  cd cd cd cd cd cd cd cd cd cd cd cd cd cd cd cd  ................
@@ -42,7 +46,7 @@ Imagine raw.img has 0xcd repeated throughout its first sector:
     read 512/512 bytes at offset 0
     512.000000 bytes, 1 ops; 0.0000 sec (97.656 MiB/sec and 200000.0000 ops/sec)
 
-And test.img is corrupt, its first sector is zeroed when it shouldn't be:
+And test.img is corrupt, its first sector is zeroed when it shouldn't be::
 
     $ ./qemu-io -c 'read -v 0 512' test.img
     00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
@@ -53,17 +57,17 @@ And test.img is corrupt, its first sector is zeroed when it shouldn't be:
     read 512/512 bytes at offset 0
     512.000000 bytes, 1 ops; 0.0000 sec (81.380 MiB/sec and 166666.6667 ops/sec)
 
-This error is caught by blkverify:
+This error is caught by ``blkverify``::
 
     $ ./qemu-io -c 'read 0 512' blkverify:a.img:b.img
     blkverify: read sector_num=0 nb_sectors=4 contents mismatch in sector 0
 
-A more realistic scenario is verifying the installation of a guest OS:
+A more realistic scenario is verifying the installation of a guest OS::
 
     $ ./qemu-img create raw.img 16G
     $ ./qemu-img create -f qcow2 test.qcow2 16G
     $ ./qemu-system-x86_64 -cdrom debian.iso \
           -drive file=blkverify:raw.img:test.qcow2
 
-If the installation is aborted when blkverify detects corruption, use qemu-io
+If the installation is aborted when ``blkverify`` detects corruption, use ``qemu-io``
 to explore the contents of the disk image at the sector in question.

docs/devel/testing/index.rst

@@ -15,3 +15,4 @@ testing infrastructure.
    ci
    fuzzing
    blkdebug
+   blkverify