Data inconsistency on LVM logical volume mounted as partition on ubuntu guest, when the written file's size is equal or greater than 27G.
Description of problem:
On the guest, writing a 27Gib file or larger result in inconsistent file checksum upon subsequent read.
Steps to reproduce:
**On the host**

0. Create a LVM logical volume on a Linux RAID 1 (with 1 disk only)

```
 --- Logical volume ---
  LV Path                /dev/davidahw2-vg4/lv0
  LV Name                lv0
  VG Name                davidahw2-vg4
  LV UUID                5FbDcl-eSDe-7cXL-22tj-Lg6O-79AL-4Gq7gx
  LV Write Access        read/write
  LV Creation host, time davida-hw2, 2021-12-06 16:45:00 +0800
  LV Status              available
  # open                 1
  LV Size                <7.28 TiB
  Current LE             1907688
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:4

  --- Segments ---
  Logical extents 0 to 1907687:
    Type                linear
    Physical volume     /dev/md4
    Physical extents    0 to 1907687
```

1. Format the logical volume as ext4 

```
mkfs -t ext4 /dev/davidahw2-vg4/lv0
```

2. Create a libvirt x86 64bits Ubuntu 22.04 machine mounting a LVM logical volume

```
<controller type='scsi' index='1' model='virtio-scsi'><driver queues='8' iothread='2'/></controller>


<disk type='block' device='disk'>
      <driver name='qemu' type='raw'/>
      <source dev='/dev/davidahw2-vg4/lv0'/>
      <target dev='sdd' bus='scsi'/>
      <blockio logical_block_size='512' physical_block_size='4096'/>
      <address type='drive' controller='1' bus='0' target='1' unit='0'/>
</disk>
```


**On the guest**

3. Mount libvirt/qemu provided block device /dev/sdd as ext4 partition

```
mount /dev/sdd /mnt/test
```

4. Write **27G file** or larger **on the guest** causing the **2nd checksum to be different**

```
sync; head -c 27G </dev/urandom >myfile; sha256sum myfile; sha256sum myfile
8d3b4b263961d2c510390f99879be89b4b9134dc588139ede75573be1590115b  myfile
a8e886b3c39d9b4721e582c5e2ca25c76ff6561750ac6dc7aa7e70404661d1cf  myfile <== ERROR: Inconsistent checksum
```

5. Write **26G file** or larger **on the guest** and **both checksum are the same**

```
sync; head -c 26G </dev/urandom >myfile; sha256sum myfile; sha256sum myfile
598ac5da9b5bfa14d0ee664ae2590e09da772cba64cbc83ec049a656223c9401  myfile
598ac5da9b5bfa14d0ee664ae2590e09da772cba64cbc83ec049a656223c9401  myfile <== CORRECT: Consistent checksum
```

**Important**: 
- With the VM shutdown, the same commands on the same mounted ext4 partition **on the host** has consistent checksum every time for file sizes from 20G to 40G.
- The disk has no sign of failure (no badblocks reported to the filesystem, MD raid reports a healthy raid setup, smart reports on error)
Additional information: